reer picts ue Pets Ray eg eee Ae es Digitized by the Internet Archive in 2011 with funding from University of Illinois Urbana-Champaign http://www.archive.org/details/insectweedplan196064univ This volume is bound without Ay which is/are unaval lable. Stub for 1 Pipe aia § bee Oy Sg . 17ob- 64 FOR IMMEDIATE RELEASE April 22, 1960 INSECT SURVEY BULLETIN NO. 1 This is the first in a series of weekly bulletins on the general insect situation in Illinois (fruit insects excepted), prepared by entomologists of the Illinois Natural History Survey, University of Illinois College of Agriculture, and cooperating agencies. It is designed to forewarn people of Illinois of impending changes in insect activity and suggests abbreviated control measures. These reports indicate only general trends. Each individual should check his own fields to deter- mine local conditions. General conditions: Insect activity this spring is a little later than usual. With a few more days of warm weather, however, insects will become more numerous and damage may appear. Clover leaf weevils: Small green worms with white to yellow stripes down their backs feed on the leaves of clover at night, hiding in debris on the ground during the day. The number varies from field to field, but in general the population is greater this year than last. Many of the worms are still quite small and their feeding is just now beginning to show. If growing conditions continue to be favor- able, the clover plants will grow away from the damage. However, with several cool days and poor growing conditions, damage would become apparent. Right now it is a rare field that will require an insecticide application. If control is required, use 1 1/2 pounds of methoxychlor or 1/4 pound of lindane per acre. Do not apply lindane within 30 days of pasture or harvest, or methoxychlor within one week. Pea aphids: This pest is now appearing on alfalfa in southern Tllinois. If insecticide is required, the need should be spparent within a week. Use 1 pound of malathion, 1/4 pound of parathion or phosdrin, or 1/8 pound of demeton per acre. Allow one week between treatment and harvest when using malathion, 1 day with phosdrin, 15 days with parathion, and 21 days with demeton. Only one application of demeton can be made per cutting. Demeton, parathion and phosdrin should be applied only by an applicator experienced in handling toxic organic phosphates. Spittle bugs: Hatch of overwintering eggs has started as far north as Chempaign. In northern Illinois, where the greatest population occurs, hatching will probably not start for about one week. Corn soil insects: Applications of aldrin or heptachlor at or prior to planting of corn are generally recommended. Broadcast applications at 1 1/2 pounds of insecticide per acre, disked in immediately, provide more consistent control than row treatments of one pound per acre at planting. However, with average insect in- festations, row treatments have been highly satisfactory. Cankerworms: These worms will be hatching soon and stripping elms as the first leaves appear. An application of spray containing either 4 pounds of lead arsenate or 1 pound of actual DDT per 100 gallons of water will control them. Clover mites: These tiny red mites are now making their appearance. Pyrethrin sprays indoors are the best control method. For outside applications, spray heavily with Aramite or chlorobenzilate at 1/4 pound in 3 gallons of water or 2 tablespoons of emulsifiable Kelthane in 3 gallons of water. Spray the foundation, the side of the house to window height, and the soil for 2 feet around the founda- tion. As a preventive control measure, spade an 18-inch border around the house, and plant flowers or shrubs. Very few clover mites will migrate farther than that unless grass or clover is present. THE LIBRARY Gk TRF > 1960 960 CAL SS LixaA BeAIE 2 £ .OW WTTALIVE yavavE vosam © | dseast Levensy alt oo entielLiud ylusow to eekies a mk dent orld eb Bide i) edd to atetgofLomotns yd ine foxy ,(betgeoxe atooaid tint) atont lil at soktand bas ,suudfvoitsA to esaflod etoatiil to ytresavinl ,yeviu® yrotell Lamtel alone. nathnegnt to akomt{{i te efqoeq miewsrst ot boopatesh at tI .xekorions gikte avicget seolf .eetpesan Lorjnoo boteiverdds etesanve joe thbvigas Fooenk of es ~tateb oy albfeii awo alul aAserio Sivode fenSiviiat dos® .ebmetd Isiescsy yuo stgolk sBnoLtLhaoe isooL set ssdt xevel oiftil s ek gntugqe elds yolvivos Jeesal senote Loos ro Letonen BONN Sart sro smoosd Iliw eiosant ,vevawon .teddsow tres to eyeb avon wet es dei edeues stseqqe una ogame bap tin) va awob aagqivte wolfley ot stidw ddiw enrtow aesay ilsme ralive yoow teat Besa ic)! ee Hewory sit no aivdeh mb anthin chine dg sevole to sevsol sci co host atoad tkedt ont ‘Lereqon at eh Betis 2b Sit mork asivey sedimm sAT cee aus gixivwb bag Ifsma etiup {Lica orn parrot i to viel teal osdd sasev ein tatsety ak ecgatnon amor +26 2D got teoxy 4%I 4 4.Wwoda o¢ ao sina tgod roe souk ei uakbest rit iw sas ete -eueceh ene ttox"t Yewe wor iliw atasigq tevels ait .sida x dried ' Sivow agemsh ,etoktiesos gatvoxg toog bre ayah, ek Lowtico ca MOET BOA cine ghrots neant he STiNPST ond tedd bLokt ster saboiil to eae ANE xo route syxodsem deo abauog S\l L. afr , OF gentthiw oagint salty rete aed fe em ee Dr gdivesaas wor es sqce ac Diyos pie) sf ebioktosent er By, ho Wprwod AL | ncirite Len to wedi deayiad Sos dusitgexd coswtod ecw eso wollA aves IS Bre .nolddevad doiw eyaS Of .tebeory z aay ere paldtuo waq obss of es notemeb To fibisd ok beorskyeqes torsotlags os yd vise hetlqas nkesoaanta fae ngs gniveadsiwiovoe to dodek wl Sac) i = ay .2trooo norteluoog tastssuy sdt even ,etomtiit “8 kegmed® H/ eXtsoy soa dyodgs tos Gadovg Liiw oe fx0} ” syoo Lo yabtoede | sla ty : . ngmmoost vilavonos ste Dao , RY i n on - ae 7) ni stotbowmnt oh pbexeth oe T9q ab foivosant Ba. |, {gq te otos seq Bouag a0 Zo se bien wot | Citigin saved ahivetitss vy wor ,anoltatsat orange fete t stew atone qs eevesl tavlt bao £ xe ar Sista TavoLly) t > das io aVOoRNk agence mindteryd TO tovsw To sootSes pi Bayog 41i cy otalianerovolds go odtasch ddiv viliveod yeure 4 ovsyga ea ; Mgmt tie izes ee stots 2g.igad S eid ‘to ebka odd ayiduevesc gil sold » avevalt éoalg Bas ‘no deswy aeats aot ian * ; IO RG Syst IO: a rst yi wpe Caution: Before applying insecticides, read the labels carefully and fol- low all precautions. This not only will insure personal safety, but also will elin- inate insecticide residue hazards. KHER K HK E This weekly report was prepared by H. B. Petty, Illinois Agricultural Extension Service and Illinois Natural History Survey, in cooperation with the USDA Agricultural Service, Plant Pest Control Branch, from information gathered by ento- mologists and cooperators who send in weekly reports from their own localities. HBP: bb 4/22/60 am ‘id Sh ae ~[ot ban yfistetso afadel eit beer ,sohfoloosani wolyloge oxoied nos yao utile Lfiw coals dud tena denoareg etwark Dihw ylae Ton atey ARAL ASO IRE Le sabipesd sublesy abloitooant &, isturbigoitaa efaak ol tial .2 .B yd beapqend mad fain gop viisow ekat MU atid dtiw sokteteqooo ot .yowwwe yrotehll Lome atooi LT Bae PORN sokeoodxe -~otste yd beverivsy aoltsayctei M fous ti foxdacd $205 foal ,asivss 2 Catena saettifigool corn ndyecor yvindeaw af Bose only ; esopasegoo9 ‘bem oe m7, FOR IMMEDIATE RELEASE ' April 29, 1960 INSECT SURVEY BULLETIN NO. 2 or ee B This is the second in a series of weekly bulletins on the general insect situation in Illinois (fruit insects excepted), prepared by entomologists of the Illinois Natural History Survey, University of Illinois College of Agriculture, and cooperating agencies. It is designed to forewarn people of Illinois of impending changes in insect activity and suggests abbreviated control measures. These reports indicate only general trends. Each individual should check his own fields to deter- mine local conditions. Spittlebugs: Tiny spittlebugs that overwintered as eggs are now appearing in legume fields in northern Illinois. With hatch of overwintering eggs just start- ing this week, no estimates can be made as to the final population. However, the heaviest infestation is expected to be in the area north of a line from Whiteside to DuPage counties. If insecticides are to be used for control, apply them this week and probably no later than May 10. An average minimum population of 1 spittlebug nymph per stem is required before insecticides are advised. Even with this number, only about 250 to 300 pounds of dry hay per acre will be saved. Higher numbers of bugs will have greater effect on hay production. One=fourth pound of lindane or one pound of methoxychlor controls spittle- bugs. Do not apply lindane within 30 days of harvest or pasture, or methoxychlor within 1 week of harvest or pasture. Clover leaf weevils: Populations of this insect vary considerably but even in fields of high populations, the clover seems to be growing away from their leaf feeding, and with favorable growing conditions, only a very occasional field will suffer any damage. Pea aphids: Populations are increasing in the southern one-third of Tlli- nois. Observe off-color and slow growing alfalfa. If aphids are packing on the new growth,apply 1 pound of malathion, 1/4 pound of parathion or phosdrin, or 1/8 pound of demeton per acre before the plants wilt and the leaves curl. Allow one week be~ tween treatment and harvest when using malathion, 1 day with phosdrin, 15 days with parathion, and 21 days with demeton. Only one application of demeton can be made per cutting, Demeton, parathion,and phosdrin should be applied only by an applica- tor experienced in handling toxic organic phosphates. Cutworms: With reports of occasional cutworms appearing in early corn in southern Illinois, and with the black cutworm experience in 1959, consideration should be given to use of soil insecticides. Broadcast 1 1/2 pounds of aldrin or heptachlor per acre and disk it in immediately. This application can be made any time before corn is planted. Row applications of insecticides at planting did not control black cutworms satisfactorily last year. Corn borers: Despite weather conditions, this pest survived the winter as successfully as in the past and seems to be more abundant in corn stalks than in previous years. Close observations will be made on the progress of this pest for the next several weeks. Sweet clover weevils: These snout beetles that often destroy spring seed-= ings of sweet clover are present in numbers. Apply 1/4 pound of actual dieldrin or 1/2 pound of actual heptachlor per acre in granular form at, or shortly after, seeding, This aids in preventing damage. G8OL eS Liver $ ,Ou MITE Yavaue ToseMT tosant fatenss ert ao onidefind ylleew to asixee 8 at baooes alt et atat eds to edeiaolomotae yo betsgeta ,(bedqooxs atosant ¢ivvt) atomilit wh. bas ,ovutivoixrgé to sgsfilod shonil li to yhraievinaU .ysviv8 yaote lh Lerndalt silfmegnt Io altomiLfi te slgeaq musworot of banglaeb ef JT .asiotiege adzoge: seed! ,eerveson Lowtaoc badpiverdds ataszyue bas yiividos toeank 2 =todeb od aifeit awo sid adoorlo bhinoda Leawbivibat dost .ebusit teaedey hg ay noizasqgs Woo ove agpe as botedatinteve —- ae yaoi? fagudoelst. yao Stiusdatwreve te coded iW .atcmtLitl oveition aft ablelt _ Bat .revedw zon SoltaLlod xy festt os of as ae ad ns» asvanites om lew ot abiaod cay moxvt enil s To con seve and af od of betosqus et solsstastar dea axeoy efdd medt yiages .fowno sot beau ed of ote zabtottosent 41 .aetiauos egn avdeidtioe £ to anidaLucag swmtnim susiysva aA .OL yAM madd sadel or yidedorg bas. cf — avin aevd .heaivis sva esitoivosent sxotsd beilyper al itsta teq eee 6Or codgi .bevee ef Liv eros tog vsd-yrb Io abavog OGE ot O88 tyode yLte ee rete ted ao tostte sates ovad Lite ooo eSynda gaur, ¢ oa = we Ss R : Bs eaelttioqer efoutica x oLsengcars am ‘to Bawog sto to smehakl to Sasec dixnqt~ond Se * toddoyaodsen to ee ugesg vo daevred to ave OF otddin owsbalt hagas goa od -apud sevidtasg so daevred io dosw £ abe ie fave dud vy uae vyisv doesnt sind to anoits{ugol seikveew self novel A sael arett mout jiwovy of ot amsge govelo add ,anotfatigog did to affert ak fiiw fiok: Lseaok viev @ ylno ,anoitinuce aatwory oidssovet dtiw bas poibest : -9RSKsh Yor weTive da disnugson add at aotersesvegk ors anoiteleqot rabide C5 at 2 ris gatwous wole Baa roLs se ‘Svready easton ast; “10 golddsreq to Boyog \l ,autdtsiam to Bovoq I ylege,déworg Oo WoA ,tuvo asveei ait Bas die sdngla aoa sicted som reg sovenab To. a i .tiiubsong iiw veb L pnoistetLom pateau oecty dasvrod bas Jaomirssit asowd S ano Yad nods aes iWin eyes iS Sia .sokdtetad | y¢ vine heifqgs od bineria miubaocter Bais a0 rope pes emetitvs req : soneizagxe rot | a mk AR a Ta OT BALNTS Th e553 ALG oh Fa Mors. SEL0 st ence Scr, WEY asrouda Cenofessoo Lo adyeqet GLW pain sowILD enue inagxs sarowrog Noeld ont deiw Bas ic onde orantuog foe eedorecs saebio his sek Lhoe To aan ad nevi od bivoda ‘2 ti Hath Sos svos veg soldestged _watnaly sc zoo sxoted omtd af tettes eomoydio dostd Lorhaos Ms ‘ wwoidibao: sedtesw stiqest yaterod arcd -, tel ; Bi topiltebenmnten iri muds aon ed ov amasn Dire nag ect of 3s YL ivteesoova ie NO 3 ed IfLinr nucidevreado szolD .atsey asvolverg i : swiear devevss dxen edt i soma sasd? reaw “ravelo Jawa 7 : ; era tea NMR Hn See ) earadmun wb due SES Levels yeo7Ta to eact iniunasya mi arose tag tolrinsdyed Teuros to Broog S\r ein) ae 4 sattueverg at ebta eis .aubbesa Se Oe ee —- ala Insecticides can also be applied after the damage begins, but timing is critical. Apply 1 1/2 pounds of DDT per acre when 50% of the leaf surface of the plants have been eaten. Do not feed the small grain straw to livestock. Sawfly leaf miner on hawthorne: The adult sawflies are now swarming about the host trees in great numbers laying their eggs. These eggs will hatch in a few days, and the young larvae will feed between the leaf tissues causing great numbers of the leaves to turn brown and die. Prevent damage to varieties of cockspur hawthorne and the English morello cherry by spraying with emulsifiable concentrates of dieldrin, lindane, or aldrin. Use one quart of the emulsifiable concentrate per 100 gallons of water or 6 table- spoons per 5 gallons of water. Caution: Before applying insecticides, read the labels carefully and fol- low all precautions. This not only will insure personal safety, but also will elimi- nate insecticide residue hazards. HEX KEKE KX This weekly report was prepared by H. B. Petty, Illinois Agricultural Ex- tension Service and Illinois Natural History Survey, in cooperation with the USDA Agricultural Service, Plant Pest Control Branch, from information gathered by entomologists and cooperators who send in weekly reports from their own localities. ate ft eae edg ceotiea dog dwods yabteve. woo eta asilives ¢fuba oct west ¢ ot dotod Ifkw agne seal? .agne xis aiedimma teary gileayeo sevagid tacl edd ms peerage Haifest odd Aas sorsortwadt tuqasisoo “e ae: tLe iO .sishetl ,atvilelh to aeteytueonos ele Le retest ® to vatew to enolfisg OOL t9q stewdmoonos olds -fel Bas yiQuterac aledal ects Saer , 005 ditoseat 3 ming iad a iutis ffiw coals tua ,ydottae Sscoursiy * eieuk SL Dy tt Jetbeawee mii Leauiluoivga aloniitl .woced of 6H yd horegsng asw 3 AUSG sit Stiy aobtersyoos af yyeru wrodell teeta ate yd heroivss sobtamtotar otk , toned Loadeat fast segitilsool owe reds mort adaoqex vides ab basa odw atosateggo9 Br ae In7 FOR IMMEDIATE RELEASE May 6, 1960 INSECT SURVEY BULLETIN NO. 3 This is the third in a series of weekly bulletins on the general insect situation in Illinois (fruit insects excepted), prepared by entomologists of the Illinois Natural History Survey, University of Illinois College of Agriculture, and cooperating agencies. It is designed to forewarn people in Illinois of impending changes in insect activity and suggests abbreviated control measures. These reports indicate only general trends. Each individual should check his own fields to deter- mine local conditions. Spittlebugs: Hatch of overwintering eggs has progressed during the week in northern Illinois, where this insect is expected to be the most numerous. The optimum period for control of this insect with insecticides will be the week of May 9. After this, results will be less satisfactory and residues more of a problem. To warrant the expense, there should be an average of at least one spittlebug nymph per stem. Even with this number, only about 250 to 300 pounds of dry hay per acre will be saved. Higher numbers of bugs will reduce yields more. One-fourth pound of lindane or one pounds of methoxychlor controls spittle- bugs. Do not apply lindane within 30 days of harvest or pasture, or methoxychtor within 1 week of harvest or pasture. Clover leaf weevils: Populations of this insect vary considerably, but even in fields of high populations in the south half of the state, the clover seems to be growing away from the damage. In the north half of the state, an occasional field is still being demaged, but with favorable growing conditions even the more heavily infested Pields should recuperate reasonably well. It is probably too late for these fields to profit from control measures. Pea aphids: These insects are quite abundant in some alfalfa fields in southern Illinois, but in most instances damage is not apparent. They are beginning to appear in small numbers in northern Illinois. Since alfalfa will be harvested in 10 days or so in the southern area, the expense of control is questionable. Lady beetles, lady beetle larvae, wasp parasites and fungus disease are beginning to kill aphids. Humid,warm weather would be favorable for these natural enemies of aphids. If insecticide applications should be required, apply 1 pound of malathion, 1/4 pound of parathion, 1/4 pound of phosdrin or 1/8 pound of demeton. Allow one week between treatment and harvest when using malathion, 1 day with phosdrin, 15 days with parathion and 21 days with demeton, which should be applied only once per cut- ting. Parathion, demeton and phosdrin should be applied only by an applicator experienced in handling toxic organic phosphates. Soil insecticides: After corn is planted, it is difficult to control wireworms, cutworms, grubs and other insects feeding on the corn plant below the soil surface. If aldrin or heptachlor is to be used, apply now. Broadcast 1 1/2 pounds of aldrin or heptachlor per acre, and disk it in immediately. This applica- tion can be made any time before corn is planted. Row applications of 1 pound of the insecticide per acre at planting did not control black cutworms or grape colaspis satisfactorily last year, but did provide good protection against the other insects in the soil. Face flies: This livestock pest appeared in Illinois for the first time in July 1959 and was collected from the faces of Gattle in central Illinois this week. Although numbers were low, it [iis [Wiketyfthat the fly will be a pest by mid-June, if MAY § 1960 GOEL 4 yeh 7 1-5 OF POPELIUE Yirvive Tome dosent [arenes odd so anitelivd yLfisow to ackwea a ai by art to etakgolomodis yd bereqer¢ ,{bedyaoxe adegeak dhe fog ,srudlyokspA to epeLiod stontill to utherevta pyevie® ¢ Fatt gulbeogmt to mronkiit ak roe: srgverot of bemtaoh ef atuogss suet? .comesam Loriioe Sateivordds staszave bos eituloee tog ~rod2h ot ebfeli avo utd doors Hivoda Seubivibel sosil .ebaent J Jaeu sit guittwubh Searsypone aed agao guivedatwrevo te dotsH sue ff “overeat Jeom sult od of Sstosaes ef tovant aidt grow iJ ow add ad fiw wabi sivoonnt stiw dooant sist to forduoe 10% stadt otom saubasy fas yuodestattee cael ef Lliw adtveet ,abdd 36 degre audefieios ene L ds To ogsieve ag od Divode oseit ,saceque ont estos “ee ysl yl to abasog OOP ot OER duods ylno reduuyet add MLW ot wion ubisiy onuhey fiw egue to avedava 2 ed an ober eolidias aleudtnos tolleyxonsem ‘to ehuvodr sno wo emebati to ey elas TMioyKGr tay vo ,oumkssg wo daevrerl "ko ayed: me alhddiw emeball ylags som an OSE ay mo te eeviut to doow fon eo a tee Yldatonionoo yeev Seal ekar to anolteluye's SEN fevolD “stole ent ,otsite edd to That doves edt ct anotdalsnpog s gid x0) ne sits iol ae " ‘fad sao add al .oneneh axle pe yews pot : mags sors Me sldascvet citiw asd .faneceb6 noted ffete @ tVidgnosses stutagveeas bieota ebtolt betasin£ » rhevitcnom Lovddes mont oktoxg or abLelt saor yen BUSD 2 isaunisgsooy ta atooant euert sabldeas set " doa et anyital anotetart deom maf dic a plot ELEY nv gents ntoniiil avedired ak avedmua ILaur at egeq : otiuos ‘to engegro eft ysota avedduae sit ot oa tc BY fiit of woekuniasd sae oaneskb esurma Doe sedkasieg qunw ,saviel eldsed yial aole ptugs to aetna ue, Seadds wt aldevove’l sd Bicow voddoow met binwh . abl | Divede sogettertlags eitobtoasak tT eabaotig Lo raion A\ Ef uwotdterey to bayog 4 aio dode aewrneci huts doombseed pemned & mob wtaw eysb JS bre solatetsg a9: ad Ofgole abieniy So5 sodoush eotdtenst he saheicqeodg oboagee olmedt goitinerd ot boonsiwsaKs ] Pee cere ee ictosuek Lege cnssess SALOWE LS ‘, SOREOWe vse “0 @ivita ID .one’oure . EAE cette foe iets to 2b » attortad sunt yoo soe od gags ener : 3g otes veq ebishtoeank srl your BLY ted ~sees geal yf cluwdsetattees - wlhoe edd ai saaid Doxey a Co baoaros Seupoggs taog ziocdcovil abil tagei tt sot To ees edt novi hedeetion asa bas eer Kase gk £5 oct tant yee mt fk wool stew scadmun dyy 5 «De not earlier. Control experiments in 1959 with baits used on the foreheads of dairy cattle appeared promising and may soon be recommended. Elm leaf beetles: These insects may soon appear in southern Illinois. Elm leaves will be skeletonized by small, dirty, yellow to black, ugly, spiny larvae. This pest is particularly severe on Chinese elms. To control them, use + to 6 pounds of lead arsenate, 2 pounds of 50 percent wettable DDT powder or 2 quarts of 25 percent DDT emulsifiable concentrate per 100 gallons of water as a spray. Eastern tent caterpillars: This insect is now building nests in the forks of wild cherry trees along roadsides. It also attacks some fruit trees. Lead arsenate sprays aid in reducing numbers when control is necessary. Caution: Before applying insecticides, read labels carefully and follow all precautions. This not only will insure personal safety, but also will eliminate insecticide residue hazards. He XXX This weekly report was prepared by H. B. Petty, Illinois Agriculturel Extension Service and Illinois Natural History Survey, in cooperation with the USDA Agricultural Service, Plant Pest Control Branch, from information gathered by ento- mologists and cooperators who send in weekly reports from their own localities. HBP :mfb 5/6/60 yiteb to abpederot oft wo Beay atted ddiw eet Ei bobaamooex od 008 sSowkLll evrocituod mk teeqge moos ysut atoougt ‘onontt -savial yotge wgu oatd of wolloy yostb Sten yd hestac oof + cate wrodt Jortnos of .amio sssaidd no ereven . to adusup S$ to vabwoq TUG oldadiew tocotsq | to ahavog “ystga 2 85 ta¢ew to asolisy OOL veq etexdneonoo af aduot sit at atesn yakbiked wor ek Sooesit eld? rere lLk beesl .asont ehh omoe evosdts oafe II jas wieorscen ef Loutyoo sedw egedmn ort out wilfot bus yllutetss aledal brow ,aehloitosant av yu ected ‘sao: 7 aisaintis Iftw coals dud .ytetes Istioarsd ouwart LL. so ote ube oR RO OH OH fevetivoirpA akosi iil wie: .f ee vd besegexnd asw Hoge atpsiied 4 ACE an td bw LOMB LEqGCOo ok .¥ 2 yxotakt_ Lsruvatl ahomtLer bag “oon “3 fox alas sokdaarotak mort nee Loninod tao% tng ld , seititesol owo rkedd mort ad roqen yiseew at Suen one exodis a ey) 7 FOR IMMEDIATE RELEASE ‘May 13, 1960 INSECT SURVEY BULLETIN NO. 4 This is the fourth in a series of weekly bulletins on the general insect situation in Illinois (fruit insects excepted), prepared by entomologists of the Illinois Natural History Survey, University of Illinois College of Agriculture, and cooperating agencies. It is designed to forewarn people in Illinois of impending changes in insect activity and suggests abbreviated control measures. These reports indicate only general trends. Each individual should check his own fields to deter- mine local conditions. General conditions: Most insects have been inactive or nearly so during the cold weather of the past week. The situation has not changed materially since last week. However, some species continue to feed and reproduce during cold weather. With these insects and with retarded plant growth, damage becomes more apparent. Clover leaf weevils and pea aphids: Feeding by green clover leaf weevil larvae is probably more prominent than it was a week ago. However, the value of controlling this insect alone is now questionable. With warmer weather and with moisture, a fungus disease of the weevil will aid in control, and clover and alfalfa will grow away from the damage. However, fields with mild to severe infestations of both pea aphids and weevils may present a problem. Parasites, predators like lady beetles, and a fungus disease of aphids do not increase during cold weather, but the aphids continue to feed and reproduce. The conditions in a few fields of alfalfa and clovers this spring may parallel the 1953 situation, when spring growth was also retarded by cold weather. Then clover leaf weevil seriously defoliated plants, and heavy in- festations of pea aphids developed, killing the already-weakened plants. Many fields were affected over a wide area of the state. However, if a similar situa- tion occurs this spring, it will involve only occasional fields. If control is necessary, apply 1/4 pound of lindane per acre, but not within 28 days of harvest or pasture. One pound of malathion may be used to within one week of harvest. Neither insecticide is completely effective at temperatures lower than 60 degrees. Seed _corn maggot and other soil insects: Cool, damp weather is favorable for this insect. It attacks a variety of seeds and, on occasion in the past, has seriously affected germination of soybeans, corn, and garden beans. These maggots will be likely to damage the germination of already planted corn, and stands will be decreased accordingly. It is now too late to do anything about this corn. An application of 11/2 pounds of aldrin or heptachlor broadcast and disked in prior to planting will be profitable on fields yet to be planted. This treatment will also control wireworms and other early-season underground feeders over longer periods when the weather and soil remain cool. Applying a soil insecticide will also help to prevent damage by the black cutworm that may occur in late May or early June. Caution: Before applying insecticides, read labels carefully and follow all precautions. This not only will insure personal safety, but also will eliminate insecticide residue hazards. NOT FOR PUBLICATION - Special note to farm advisers and assistant farm advisers: 4-H members will soon begin making their summer project plans. Members enrolled in the entomology project can obtain a free packet of 50 insect pins by OseL .££ yaM fovant Istensa edd so aniteLiud yDiesw to acivee 8 a end ‘to edstpoLomedne yd bexrage1q .(betqeoxs atosand. brs .studivolisA to sgelfod efor ttit ‘he ytraveviau .yevine golpusqml to atomkiil at ofqos¢ aravsrot of bengiesb ek dT sivoget sae? .ssivercm Lotdaco betesiveudds evoayaue Bae ivitos tse roteb of sbiskt awo ald dooio bivhda Lecbivibut dod atadlissips notch o@ yiusen so evitosot nosd syed arooend aver eonre ylisivetsm boyneds doa eat aoldsudie ont epecdisoy Bloo path ssuyborgsr fus besl od suntdod ¢ pa e0tos ove JSHSTSITE Otom sagoned onsawh wor gusty Deiustexr ddtw fas edooont fivsew tyel tevolo asetn yd anifesd cabiitcs asy bon elivesay Isol amduil 30 eripv att ,tevewoH ORS doow ¢ usw ot aed Snemimoryg ¢ “Crom qldsdor fittw bas todtsew yresttsw fgiW .sfdenoidseaup von al srnols toseat eldt Sifetic Bos ssvyoro Bas ,foutase mi bis fftw [iveaw od¢ to seseatd anya 3 ‘.Spamab edd wort yews | ots abkucs esq dtod Io snoldeteoint srevoe of bLlia diiw sololt wusvevoll agp o brig .aaisoes Yoel all acogabora asd tasted ations 8 trgeotg | os asugkdtaco ages oft sud .saddnow bios paiiuh sasoteak con ob abide” ‘to. etd? azar bag stfisife to abiskt wel ¢ mt enotétbaes otf .souborges Baw ved Doby ads" t ote euw dgworn, naiitgs sodw reiioininl eeeLl sris lofteseq yea “mi yvacd bog .aduolg Ssdeiloteh ylavorsaa Livesew tzef vevols oedi .tont beh salueig Laastsow-vbeetia ond nolilti. .bsaofeveh abidds saq-to anoids te welisdea w ch tevewolt .etade sit ‘lo sate ebkw g “evo hatdvette stew ab, mabdsit feuolaseo0 yao ovloval Iitw tk .yoluae afdd aves s Savoy WAL ylagqe .wiesesosa af pickle “3 r ne to Savor sn .ovwitad ay zo Jesvusd te aysh 88 stad Togoo ef abloitoaenk reitioll Sees to woow spsetpeh OF a eidsuovel ai soltssu yeah ,lcoo segosans [toe sedto bas Jognem aco esd Ps mor .tesy odd mi nofaesee so .bas af Yssiuay - b HHORG 3 TD .Sosank ekdt 7 ,ansad nab se fin \orop ,utesdyoa ‘ko sokdartureg bedostite yLlerol c fie .wion bodaalg yiserle to scttanterray odd ogsmeb at yfoltt ad I sushi re es oF ates oot wor ot FE A eacaerd 540908 boasstosb: i} Susobsotd yofdsstyed to eivbie ta abavog S\i I to soideok aes a¢ od dey ebfert so elderitore of Lise patie: S..¢ Yt Bbovovatobesr nosease~yftas sede Sug asrowertw Lorteos ivfscA loon oineay {ios Sng aaddesw odd nerlw abo! Sst arrowdus, ussld orit vd agemah taevretq oF ae. © pate me pees s ,achzortasent goivigge sxoted wodkdasd a Ssnoenusa suvent Ifiw ylao tom silt “Ed Rae 99% ahucyad euhiless obFordou sion Lskosge + MOLTACLIGUT HOF TON a sikvion giged sco Lilw orsdasar iar He 3G vkeddo uso toepoxa yyolomotae edt aE padionse ~ wes writing to Stevenson Moore, 280 Natural Resources Building, Urbana, Illinois. Be sure to obtain a supply of the new 4-H Entomology Record Book (BP-23), which also contains cut-out labels for collections. In addition, insect mounting boxes can be purchased by members. Refer to the recent mimeograph on this subject for address and price. The Gite ck ate Se ene ae, ae: This weekly report was prepared by H. B. Petty, Illinois Agricultural Ex- tension Service and Illinois Natural History Survey, in cooperation with the USDA Agricultural Service, Plant Pest Control Branch, from information gathered by ento- mologists and cooperators who send in weekly reports from their own localities. HBP: rb 5/13/60 7a 7 ; “ae Les 2G .etoatLit .siediU sothttnd ese ota doate pote x1008 mnt ge toms SRK ARR wHE Leustinoingé ehomP Lil Witet .& .H yd Seeger aaw 3 AGEU sft tin softevsqeoo nt .yvevinG yiodeih Leute | -otne ud bovedtes sottsoroter wort ~domet& Lortaod teoT eeitifecol mvo vieds mor’: atroqax yisloow ak bisa ont at, 126 FOR IMMEDIATE RELEASE May 20, 1960 INSECT SURVEY BULLETIN NO. 5 This is the fifth in a series of weekly bulletins on the general insect situation in Illinois (fruit insects excepted), prepared by entomologists of the Illinois Natural History Survey, University of Illinois College of Agriculture, and cooperating agencies. It is designed to forewarn people in Illinois of impending changes in insect activity and suggests abbreviated control measures. These reports indicate only general trends. Each individual should check his own fields to deter- mine local conditions. General conditions: White, seared-appearing leaves on alfalfa plants are the result of frost injury several days ago, and not insect attack. Actually, in- sect activity has been retarded this week by cool weather and rain. Spittle bugs: Populations this week varied from 20 to 200 per 100 stems of clover and alfalfa in northern Illinois. It is almost too late to get excellent control now, but practical control may still be obtained with 1 pound of methoxy- chlor per acre. Do not apply within one week of pasture or harvest. Clover leaf weevil: Leaf feeding by these insects is apparent now on Clover, but the larvae that did the damage are nearly mature. In addition, a fungus disease is beginning to kill many of the larvae. Pea aphids: These aphids are becoming common on red clover as well as alfalfa. However, there was no visible damage this week. Lady beetles and their larvae, both feeding on aphids, are becoming more plentiful and are helping to hold aphids in check. A fungus disease is also killing many of these aphids. Muggy weather favors this disease. Thus we are not anticipating any large-scale damage from these insects. Lesser clover leaf weevil: These tiny worms are now common throughout Illinois and are burrowing in stems and heads of clovers. No control measures are known. Corn borer: Pupation of overwintering borers has begun in central and north-central Illinois. First moth emergence will probably occur in about three weeks. Soil insecticides for corn: Many people are asking whether the use of soil insecticide, aldrin or heptachlor, is justified with the delayed planting of corn that is occurring. Soil temperatures are low and soil insect activity will not increase until soil temperatures rise. We recommend the use of soil insecticides even on later planted corn. Bagworms: These insects will soon be hatching in the southern third of the state. After hatch is complete, apply a spray made with 2 teaspoons of the 51% malathion concentrate, 3 teaspoons of 60% toxaphene, or 1 tablespoon of lead arsenate per gallon of water. a 3 JOH HRCA ITUe vavae rome £f; ’ dooant Lexeneg odd no apiteltud yideow do estvee 5 ib. - oft To adgigolemotre yd Sotrgery .(hedqesxe riooank iy vordiuoliA to ageffod sioarlil to ytteteviaU ,ysowind Hetonogmt to stonkl{l ak olqcaq mtavexot of hongtaed at $2 adiodey saoll .aotseson fortaao badnivexdds aveosyue bos Uhivisos | a9) of ebfott mwo ake asarls Suara fsubiviiel dost .absets Deve: OoeL , 7S ysl Tts9ISgGGS Wor s%s sdamyn Syrou to sno galvayoo dtoxvk ‘To soageM “loos of sdel cos at Si ablett geom al ,eiontifl to Baind-ano aredd fexgqe odd to siecle avroyat¢ onallot dusinunul sdt sonta pee Bore «tory od ILfe — ableli aaiwowewofs to wine at foxdrod .ts0g ad ELitw . -yacrosa te Sauog I sell ssieta seq erligerern SLO Yo she to systove ts ar Sy ,eTtesg to yeidive to adssw eao niddiw gen dud Ch x¥LS2 ht ‘Ga vr lowdioa pethint 08 Meat oat »ab elgg #osv alag ylhigqer boessrour etonod guleadatweeve te coktsqyT rarotod LITOY soets spew srsorec GOL a alogi lil te tisd orsitios oft mf gesorsg OC noet soye ost af 23 veM od volnce av aew dade croD tied avsddwoe edt nt sonsg rons as “af rstod To engta tet badotaw ad blyode yetedaal ot atuol re next onl s 0 senub to txweq tedtel earlx Yana — ta ased eas siaitt ddoM semrowivo atoatd ate saoltetberc: copnil etesa s ant tO Bears | :eHfoow sea ey os or “— a ed fi caalanes ebiott HEtHpacy, 3 add Bos Pioe sat ne YSU wae jostht 3 On iiss S19B Tay taidos - apoisoud stew toldosdged to sivbla to shaved O\L f detdw ac ahiott enon toq Saved £ atiw abfeck stud ,ogecnch yos Bi rar SEI oved Sivode se tiny eatriowsuo Janiaga Getosdoty ad too yam Soa tagiak arrow asoisoa on cud .fbevrosdo aeod sve adtintrt Ado > aumowymsh, te iy One ontaay te uluede dughauxul gotd? dode® toed rasd Joy oven Jooand £idt asovet nxatteow [ood .edoow west tx pbLlelt mroo vines wak A - et - . y fee ote ewok hfe pe teh « n or av . s¢6 NO Rhiwode aqrite odis vale sven aavesi mroo .. acesan ; . ; . esoariii To Orit orsniduoe ASUeSL SNF mos k ceerey, sMWOU Ame: sihdagiig ets Vornot 48 Salen sift oF ye FLO Leh ‘oat neloion ~bedsut]erh oa Savor stag ehiwoc “Ni i ulage aieate arent Ot a eheeneg 4 ‘itwse A sasifiwed r deub a ak aL etReY Bled I FaeSourdo ip) ; soW seelt momohds os an Foudioo Bos ,botono asad sei opamad Setetoming 4 q per Sy ass ost Re eV MI Sees Tot eis aeTes wo aqorstoh ,nsvesl yruadwarda gafseish ef «fivee to eciosaqe voddosk fadel voltod s2oneiney ome sot Totdwoo fpottos ag eal sbhivesy fiiw ralitiatan nu Yellow spots in oat fields: Bacterial infection is causing yellow spots to appear in oat fields. Although it resembles damage by greenbugs and yellcw dwarf, it is entirely different. No greenbugs have teen observed in Illinois thus far. Caution: Before applying insecticides, read labels carefully and follow all precautions. This not only will insure personal safety, but also will eliminate insecticide residue hazards. FERRER This weekly report was prepared by H. B. Petty, Illinois Agricultural Ex- tension Service and Illinois Natural History Survey, in cooperation with the USDA Agricultural Service, Plant Pest Control Branch, from information gathered by ento- mologists and cooperators who send in weekly reports from their own localities. 5/27/60 ay or ee agogo wolley yufdueo at aoltostot Lafrodosl itewh ban a agidaoarg e — Lergincge wolfot Bas yilsterse eLodal beet aicinvaseae on orobott ateckmits [Liw cals dud’ pytesa Isaoaroq owant Shiu ee each seapanenetete oxd Iatudluoizgs stocilflY .yttel .& .H vd boisqesg asw droge yf sow ACEY oct dtiw aeidsiagcoo ai .yevase yrotakh fevutsif atootird | DS 2 -olu9 vd heverdsy solvasioint movt ,donertd Lordaod gaol faslt | ,ooivyea »estdifgsol awo thes as atxoges yfasew at Broe odw axotstagoos ! Nien 7/ FOR IMMEDIATE RELEASE (J June 3, 1960 INSECT SURVEY BULLETIN NO. 7 This is the seventh in a series of weekly bulletins on the general insect situation in Illinois (fruit insects excepted), prepared by entomologists of the Illinois Natural History Survey, University of Illinois College of Agriculture and cooperating agencies. It is designed to forewarn people in Illinois of impending changes in insect activity and suggest abbreviated control measures. These reports indicate only general trends. Each individual should check his own fields to deter- mine local conditions. SawPlies: These drab yellow to grey worms with prolegs on each segment of the abdomen are common in small grain fields and are still being mistaken for armyworms, which often appear in grain and grass fields at this time of year. Army- worms have only four sets of prolegs on the abdomen and are brown or green with orange and white longitudinal stripes on the body. Control of sawflies is not necessary. Armyworms: Moth flights have been observed, but no serious worm infesta- tions have yet been found. Newly hatched worms were observed in fields this week. Watch thick, luxuriant stands of grains and grasses during the next few weeks. Cool weather favors this insect. Black cutworms: Watch low spots in corn fields during the next two to three weeks for damage by these worms. This has been an ideal year for them. If cutting starts, examine the soil around damaged plants for cutworms. Apply 1/2 pound of dieldrin, 3 pounds of toxaphene or 1/4 pound of endrin per acre if needed. Direct the spray onto the soil at the base of the plants. Chinch bugs: Thin stands of oats in central Illinois may develop moderate infestations of chinch bugs during the next two or three weeks. Examine dead and dying spots in the stands of small grains for evidence of these pests. If infesta- tions are heavy, be prepared to apply 1/2 pound of dieldrin on the edge of the grain field to prevent migrations to corn. The grain can be harvested one week after treatment, Sod webworms; Plants may be cut off, but leaf damage and stalk damage may also occur. The grey worm with black spots that is doing the damage is hidden in a nest of webbing and dirt; it is found only by carefully sifting the soil. One to 1 1/2 pounds of DDI per acre applied as a spray at the base of the plants will help control webworms. Corn borers: Pupation of overwintering borers is complete in central and southern Illinois. Moths have begun to emerge in these areas. Peak emergence should occur from June 6 to 20, with peak egg deposition from June 13 to 27. In northern Illinois pupation varies from 50 to 90 percent. Emergence is just beginning. Peak flight should occur between June 13 and 27, with peak egg- laying taking place between June 15 and July 1. Temperature and rainfall will affect emergence and egg-laying. Particularly advanced fields of field corn in the area north of a line from St. Louis to Kankakee should be observed carefully during peak egg-laying and hatching. These fields may profit from treatment. Bagworms: These pests should now be hatching in central Tllinols and will soon be hatching in northern Illinois. fter hatch is complete and while worms are OdEL .£ Sout . J .0U MITSIIUE YaVRUR. TOREME togent Larenoy silt no anttelfud yldeew to aotraa s ot ntuevs 2 edt ak ods ke atets po Lomostare ‘ ows sori (oat one atooent tie) atoutl gotbasqut to “atoneLET fit etgosg NTIWSI0s oe Reise al at “qazloamae 5 alsoget easd? .cowweson Loutaoo botetvesdds toenare Des yiivivos tose -1atoh o¢ abfett awo abd foodo Bivoda Saubivibak dopT Xs besortes cofteerrotat mov donaré Lowtnod tact dual? woiviee® Spruit ekeiissol awo xisily mov advoqey viloaw gi Drea oni antodatronooo a) 2 Ta FOR IMMEDIATE RELEASE June 10, 1960 INSECT SURVEY BULLETIN No. 8 This is the eighth in a series of weekly bulletins on the general insect situation in Illinois (fruit insects excepted), prepared by entomologists of the Illinois Natural History Survey, University of Illinois College of Agriculture and cooperating agencies. It is designed to forewarn people in Tllinois of impending changes in insect activity and to suggest abbreviated control measures. These re- ports indicate only general trends. Each individual should check his own fields to determine local conditions. Corn borer: Pupation of overwintering borers is complete throughout the state. Emergence is complete, or nearly so, in southern Illinois, and egg-laying is practically complete. Emergence in central Illinois between Highway 36 and Highway 6 varies from 75% in the west and south to 25% in the north and east. In this area peak moth flight will range from June 10 to 25, with peak egg-laying and hatch from June 15 to 30. Where needed on field corn, insecticides probably should be applied between June 20 in the southwestern part of this area and early July in the northeastern part. Emergence in the area north of Highway 6 varies from 0 to 25% Peak moth flight is expected June 15 to 30, with peak egg-laying between June 20 and early July. Where needed on field corn, insecticides probably should be applied in the last few days of June and early July. The above dates are approximations and may vary a few days, depending upon weather conditions. In general, most advanced fields in the area north of a line from St. Louis to Kankakee should be checked every few days during the period of egg-laying. Egg-leying this year could very well be concentrated in about 5% of the corn crop. DDT is still the generally recommended insecticide at 1 1/2 pounds per acre in the form of granules or sprays. It is usually not profitable to apply insecticides to corn for ensilage purposes; but if it is to be treated,endrin is recommended in place of DDT. Armyworms: These insects have appeared in rank growth of wheat in south- western and western Illinois. They have been controlled readily with 1/4 pound of dieldrin or 1 1/2 pounds of toxaphene; either one does a good job, but results are not complete until 4 days after treatment. Do not harvest grain until 7 days after treatment. Black cutworms: A few reports of these pests have been received. Low spots in corn fields are usually attacked first; then the worms migrate out of these spots, cutting corn as they go. Apply 1/2 pound of dieldrin, 1/4 pound of endrin, or 3 pounds of toxaphene per acre when damage first appears and before worms are full-grown. To insure the quickest and best kill, direct the spray at the base of the plants onto the soil, and use as much water per acre as possible. Immediate cultivation, throwing dirt around the plants, will also help in control. Other corn soil insects: Grape colaspis, tiny white worms that feed on the root hairs of corn and soybeans following clover or two years of soybeans, are appearing in central and south-central Illinois. Plants are stunted, Fy 7 Tee or yellow and may die. The worm is white, grub-shaped and about the aM 8 Pp ii large comma. Early-planted fields are usually damaged more than the later jplented OL GL sent — ARIE 8 .Cu WITRLIVR YAvaUS Tomeny Foaeg Lstenen, ait no antéealind yiseswv Io aeiyoa a mt igh eae at or sit to etainitoniotns yd bousgeta ,(batasoxs stosant dhytt) ebontifl al Deis curdigozipa to syesfoo alow II te yoke avevind eva sgnotad H Level 2 sami to efontliy ot Y Qtawetot of douksob et ot reokousas goke. -91 saouT .servesem Lordaon bedstverdds tashgue ised bas ywividos tooant at es od ebfsi% awe etd foedo biwoda fenbivibar Aoat .enneit Lstenag yino sdteokbab seaGaiT, tbhaon iaood. onde ty ett tyodapordt sisiquoo 2t arexed uaivedntuveve to soldsawd Metod: 2100 yakyeatease fog .ofomi lil srodteos at .on yinsan to ,stelgios ak sara stoLqutos ‘finoktag 2} Oo ysundaill Dos ¢ BOS atrtd Le cS Px OL Rare baa oF drive bee bees soit ae a8 oF OL ony po eyist Litw doghlt wis Bieit ao beboen sed OE oF to dice sisdszewidvoae edt ar 08 sgyt NIssasen s100 ayit ito ddsom sore add at Petal is "390 Adiw ,O€ of Of ont botosgxs al ¢ osenk mos Bleki so behest ered | eel yeas Brus onut, To aye wot 3 anotismixovogs ots andsh ovode off hex aVvO8 tao .lerscen al ae reiidaow mise § aio ad bi yone eoxestiat ck abgod 8 ork too od {Law yvav eines saey olde seen ae aro mio tog abanog S\i I ts ett > oisesank Ashbasmmooey. ylisvenes oft [Lida af TAT Of el Cantand aicl .ayetae yo esfumensy to axel odd ak at ai ¢i && Jud pasnoqusy eysitene uct axoo a nino: rare? ee MH to f To SIWOIR event stosank ons? -:aeeeowvarsA didgiw yiibsexr faved ved? .etonitit reiteow bee otedas Ww .dob Boos 2! rededqexot te aboog S\i f to atsbieth ‘ gthery dasvrad gon od .duemtssxt uetts eysb | Lidau edalqnos tom Joomsonh foose asd to avtoges wet A :eoowivo wos id dta vilssey-ote ebfolt aoa ak adoge Look yey ge iioo gatdcuo .atoge ah) fSty Stop tec shedgexod ta abmgag & Oo ssi oLuy ant diahies Oo? a vio: apie wre eves bas mics sian door ole rom Boe Leudies of atiivesqas ei “ gam Bus wolley io borage Lag net suas ante l 22% fields. These insects will mature within the next two weeks, and damage will cease. Ordinarily, the plants recuperate reasonably well from this damage. Wireworms are also being reported. They attack seeds and later drill holes into the base of plants, killing them. Little can be done to control these insects now. Soil treatments with aldrin or heptachlor prior to or at planting provide protection. Wind damage: Severe winds have whipped and frayed corn plants. Sand or Pine dirt has blasted the leaves until they are white, and tap roots have been broken, allowing the plant to tip over. With moisture the plants will recuperate. Insects are not involved. Hessian fly: A spring generation has developed from flies that wintered in early-planted wheat. This spring infestation is reported to be severe in some areas. Face flies: This new fly that clusters about the eyes and nostrils of cattle is becoming more numerous and apparently will be quite noticeable by early to mid-July. At present the only recommended control is to apply repellents and pyrethrins to the head of the animal as sprays or specially prepared smears. Bean leaf beetle: Green, red or yellow beetles with black spots on their backs are feeding on beans. The leaves of plants appear to have been peppered with a shotgun. In cases of damage to the point of plant kill, apply 1/4 pound of dieldrin, 1 1/2 pounds of toxaphene or 1 1/2 pounds of DDT per acre. Caution: Before applying insecticides, read labels carefully and follow all precautions. This not only will insure personal safety, but will also eliminate insecticide residue hazards. NOT FOR PUBLICATION--Special note to farm advisers and assistant farm advisers: 4-H members will soon begin making their summer project plans. Members enrolled in the entomology project can obtain a free packet of 50 insect pins by writing to Stevenson Moore, 280 Natural Resources Building, Urbana, Illinois. Be sure to obtain a supply of the new 4-H Entomology Record Book (BP-23), which also contains cut-out labels for collections. In addition, insect-mounting boxes can be purchased by members. Refer to the recent mimeograph on this subject for address and price. eae ren ee sen ate ores This weekly report was prepared by H. B. Petty, Illinois Agricultural Ex- tension Service and Illinois Natural History Survey, in cooperation with the USDA Agricultural Service, Plant Pest Control Branch, from information gathered by ento- mologists and cooperators who send in weekly reports from their own localities. HBP: mfb 6/10/60 .gegeo Liv apsineh bug evsow owd Juen ont akdtiw suuten cote pre $2e Sts gurcowoutlt eopanted akdd movt (low. Ylistoeser eteusayoot adnete ant to oad eat otur eolod [Lind totdel bug shoss Aostts yodt sbeduoge Atiw atdasattzeré Ero .won atoesank seat Io oven ot ohob od 189 9 toldostorg sbivorg gaitasfig ts to of tol. coldom 9 Bree .adog ler mion sy ieod sved aes cs a -sigtequess Ifiw atos fa yati bos Seqyinw sved eboiw stsvea 7: bas ,etidw ows ysdt Litas asveel add Bofeei¢ Bal edt suntatom dvi weve att ot dusle edd sutwolle ¢ -haviovat tom ane} 3 heisdniv jedt setlt movt Beqolevsh asd solts iene, yoivos A “ye sgteaod smzve mt suovea od oy bettagex ef aolsstastal potsqa eidT sede bstaslgq= - to alindeon bus eeys ont duods sisienfo tant yLt wen aidl :osilt 2 i elise yd oidrasiscn etiio ad ifivw vwilaersaqgs Sos avo toma atom ae a ‘at of ‘ ins adneifeyar yiqge ot ef Lowdnos bobaecmoosr ylao anit visiees 4 SA WN i atsame Darsgerq yilstosga to aysida asa LIanttus edt to beod ons ot a stoedd ao atcsys aosid itty asldsed wolley vo bes tesrd eitead Teel. ngod ' Atiw hoisyged aeed svsn sqas etnele. to aevast adit varias 2G 0 Bathes? 2%B BR to havog “\5 vlqas 4 diel to tatog sit of spss To asago nt seugdoda | .st983 Ted TCI te abeurog Q\i Lf to enerlyexod To abmuog S\i L Raaaiaes) woliot bus yfliulecss afadst besx ~aobioktogant salkytage aecokad 1aoOtd8o stsgaimits ents tie: dud .ydetse Iesmosieq srusat Litw yioo ton att -cnolduasong £ vahiansd eubiesr shkokdoous Mist od ston Lsio we ee oun Boca eft atten utged soon Iiivy axedasm i-i” :eteatvbe - set 5 fia tdo Mga deetord vaofomosae wn at beffo a: ysEHLi tua asowwoasH Lsxuieli O8S «Stoo! gwognaveds of. nerts, sine Ano Sroosh sane H- wan odd to viouue e atetdo ot 9% woi-tooagt ,gotdtbbs nl anucidsalfon tor elodel dyo-tus ankecae dua etdd oo dasygecntm dadasr oft od ratlefl .aredsism yd Joapdoy soita aay ce 43 i owef a ae ev tuoder wineow aint . . 2 yaolalh istudplt tLEl bap soivie® sokenedt ions th forsdeto5 oH i ,sotvied Isnt ive. adiogs: visloaw at beoe ow evoderscvoos bas ndetgoLom Hi fin: 1a - OS\OL\d | Ee FOR IMMEDIATE RELEASE June 17, 19€0 INSECT SURVEY BULLETIN NO. 9 This is the ninth in a series of weekly bulletins on the general insect situation in Illinois (fruit insects excepted), prepared by entomologists of the Illinois Natural History Survey, University of Illinois College of Agriculture and cooperating agencies. It is designed to forewarn people in Illinois of impending changes in insect activity and to suggest abbreviated control measures. These re- ports indicate only generel trends. Each individual should check his own fields to determine local conditions. Corn borer: The cool, wet weather this past week has retarded borer development somewhat. Dead pupae were observed this week. In some cases pupal mortality was as high as 20 percent. It is not known what is causing it or how widespread it is. The last 10-15 percent of the moths that emerge account for most of the damage. Reducing this segment of the first-generation borer population would drastically reduce their importance. Weather during the next 10 days will be very important to corn borer survival. At present it appears that the heaviest infestations will be in the area north and west of a line from St. Louis to Kankakee. At the present rate of borer development and plant growth, only early fields planted in late April or early May are expected to be affected. Between 1 and 5 percent of the corn fields fall in this category in the threatened area. Emergence is complete in the area south of Highway 36 and just north of St. Louis. Egg counts in the most advanced fields this week ranged from 15 to 200 per 100 plants. About 20 percent of the eggs had hatched. On the most advanced fields in this area, insecticides should not be applied until June 2h or later. Emergence is almost complete in central Illinois between Highways 36 and 6, and egg-laying is just starting. Where needed on field corn, insecticides should probably be applied the last week of June and early July. Emergence in the area north of Highway 6 varies from 10 to 60 percent. Peak moth flight will occur this week, and peak egg-laying will probably occur be- tween June 24 and early July. Treatment probably should not be made in this area until the last few days of June or the first week of July. To determine the need for treatment, examine 50 to 100 plants for signs of borer feeding on the whorl leaves. If 75 percent or more of the plants show recent whorl feeding, check the tassel ratio. Measure from the base to the tip of the plant with leaves extended. Split the plant lengthwise, and measure from the base of the plant to the tip of the developing tassel. Divide the tassel height by the plant height, and multiply by 100. Take an average of five representative plants per field. This is the tassel ratio. The corn will warrant treatment if the tassel ratio is 30 or above. Treatment after borers have drilled into the stalk proper will not be effective. DDT is still the insecticide most commonly used for corn borer. Apply 1 1/2 pounds per acre as a spray or 3/4 to 1 pound per acre as granules. When spraying, arrange two or three nozzles over the row to cover the upper 1/3 of the plants, particularly the whorl zone. Other insecticides approved for use against corn borer include endrin and toxaphene. Ensilage or stover of corn treated with DDT or toxaphene should ~~ ae a O30L TL snub ae Q OM urnaatun vraviive TORT dosent fetensy oid so enldéotiud ybloow to asinss 3 gk ee ang to sadaknofomodas yd howsastq .(bsoqeoxe eadoosst dises't) ¢ bse anudtuokopA to agett. 4 stoarill Io yttaraviaU yews grodak gittbueqmt to akoskLil mi sigosq azswatok of pongtash ak of , seo. a sivsasm lows) bodabusedse dogma oF bas ytivites J foedo bivatia igubivibot doa .absert Lerenop eine . ines th asia aod desw tasq aint usddeow taw .Loos dt go smon qi .deew ebdd Bevasado ovew segiret Last guisovss ak dadw awood ton el of. NOS O8 as pier as ' deem tok dsucoog eavans gad urdow oft Yo tneotsc SL-OL tagt edt yak OE bigot soltelugog vetad aoithereanigetesit sdf Bo Sioa agit yokoubsh ):) may at {ftw ays Of dxen sit gouknud tedites .oonsdiogmt ttedd somber yl eLlevivise sood aros = sete aay ot sd serrod To sos Yel Vaupe we ivyasd oft ¢arkt anasgas ok dasestg o x of eivoal .éf amst sail g to te nbs LE yixeao yino vidworyg daale baa 2 Bus £ Nesutod .fstoetie 2d of hed Gots Denstgotss oid nn ae £9 nara Ses% Sna 3€ yawdnkh lo ddvoe sete add of sielouice af SsOomegrsah Boas ai vosw sidt effort hesusvba taom odd ei adoyoo ygd «a. ea a Jhetevas han enge oy to tusoreq OS todA .edas emul Lida betiqgs ad soa Livosdn eobloitosant yeats alist ok fers — wt otefquios taomfs ak sonegrentil oy i ered pipes devt, al naan on, aa ‘ Lass Sita sant io sesw Jasi oft beilqgs ad yldsdoxg ae Bo cal: O Yavdnth ‘jo déwon sets od ai senoyrome — ig dned bums .#oow abst uyooo [Liw Tag i lt a if Sos Réuo ode else Ong slacaerics ect .yiut ylaes Bas YiNG to Asew Tashi eit to say to ayveh wel tasl edt Ob O8 eucmune .taemtaons tok Reoe ois satmoteb of d MGM Ao dissorer : stoveel Liotw anh no natbest *et0d ’ a aa nidatt foacad ua pean euakbost ringed eige tts at A weer <5 sdhans sevots m9 OF sh ckosy fozagt avisostia od tom {liw saqord Ae ifsosat edd Sikge . > Yeats a 23 ates rec ay GOT Hbevondda aehinidesant weird a 7 F instpaet ios To vevote co enetiand .eosdgexot foe. Ds not be fed to dairy cattle. Endrin may be used in this case, provided label ree strictions are followed. Black cutworms: These insects continue to be a problem on small corn. With the cool wet weather and large acreage of late-planted corn, conditions are favorable for increased damage. Most of the worms are near the soil surface, and some are feeding just above the ground because of wet conditions. For the next few weeks, observe corn in low spots in fields for signs of cutworm damage. If replant- ing is necessary, apply 1 pound of dieldrin, 3 pounds of toxaphene or 2 pounds of aldrin or heptachlor per acre before planting the field again. Make a broadcast application, and disk the material into the soil irmediately. If stands are still worth saving, apply 1/2 pound of ¢ieldrin, 1/4 pound of endrin or 3 pounds of toxaphene per acre as a band spray directed at the base of the plants. Use as much water per acre as possible, and cultivate immediately, throwing dirt around the base of the plants in order to cover the insecticide. Cultivation may not be needed for good results if the soil is exceptionally wet at the time of treatment. Fields in the west southwest section and in other areas that have water standing between the rows and are too wet to get through with ground equipment could probably be treated successfully by air if conditions are critical. The same insecticides should be used. Wireworms: Scattered reports of wireworm damage to corn were received this week. These insects drill holes in the stalk just below ground level. The center of the demaged plant wilts, and often the entire plant dies. If the field is to be replanted, apply 2 pounds of aldrin or heptachlor per acre broadcast, and disk it in immediately. In infested fields that will not be replanted, apvly a band spray, use as much water as possible of either insecticide and aim at the base of the plants. Cultivate immediately, throwing as much s0i1 as possible at the base of the plants where the insecticide is deposited. Armyworms: The weather of this past week has favored armyworm develop- ment and retarded the development of diseases and parasites that attack this pest. These insects are appearing in rank growth of wheat and in grass pastures. They are readily controlled in wheat with 1/4 pound of dieldrin or 1 1/2 pounds of toxaphene per acre. Usually it takes 1 to 3 days for results to become apparent. Do not harvest the grain for 7 days after treatment. If treatment becomes neces- sary in grass pastures to protect the pasture, or to prevent migrations to adjacent corn fields, use 2 pounds of methoxychlor per acre. Methoxychlor will prevent the worms from feeding, even though actual kill is poor. When using methoxychlor, allow 7 days to elapse between treatment and harvest or pasturing. Bean leaf beetle: Tan, red or green beetles with black spots on their backs are feeding on beans. The leaves show irregular holes. If damage is severe and plants show signs of dying, apply 1/4 pound of dieldrin, 1 1/2 pounds of toxaphene or 1 1/2 pounds of DDT per acre. Leafhoppers: These tiny wedge-shaped green insects are common in alfalfa fields in a bana Letween a line from Watseka to Quincy and Danville to St. Louis. The nymphs may feed extensively on second-growth aifalfa, stunting the plants and turning the leaves yellow. If adults were especially numerous at first cutting, it may be profitable to apply 1 pound of methoxyechlor per acre when the new growth is 4-6 inches tall. + vg eot.isdel Jobtvorg. eso atdt ct Seay ad yse aivbos” ald maidoug ¢ od oF auekd¢aco etooant saodt dauecweinis: toate an a eee eet Sanaa te 3 roo betnelqestal lo syserse syts ad bas tedisew. daw L590: £009 bao .coetiva Lion sit usa ons amyow env to ¢a0M .sgemab Haesotonh to geusosd bavortg sat avods. taut, netibes adits Lee ; ko omiawdue to > aaa sot ablokt ak agogs wol af ato a & to abawog Gro suodgexod ‘ko vonvoy £ oiwblekb to bayog L vlage (UtBe tasohbsokd 6 sated wlhans bfert sdt gotine ty « valcke estos Tog. woltoedaad + ime = iLitde ets stn UE .ylotekbemzt Ltos ode odakt Iniuedam edd wadtb bas wold + to -absiog € x ies. to Anwog HVE wiiuate.L » 10 Besog S\i yeas. i foun 54 gall ; is ggad ogy te bas Sate nae verter baad s 26 o1os edd Dosory Wlotakbemal odvavithigo ~ soldiacog RS otog Sshosa od tag ivd .ebioktosant odd xsvoo of tohio ak ednelg edt © euks ay te tow yllenoitesone st " Liga ane 3 et-Lvaee boos 1 rot xetew aved tacdt asexe tedde of Pre nobtooa daswiddvos raow edt of nblekt ; tremsiups fovyory déiv dygonid dsy od Jew cod evs Sos awor edt ss suited go stise @AL .igoitine ors aneisibace Ti the yd yiiwteasoove Detsent od yidedor eae) hoes od binada eehhoitopar of oge ene ) meovetiw Io attoge: honetssoa racriowstW + is ei, she ant ot asiod Sitaub assert se Sasa tyke Saks bore ods 112: va ba ww pikes “ablelt ‘bad note e agate suptienike: si be - tk es ieteaw floum 2s Gay i ba. uteda: thanmt sd¢avicstnd pres asi 40 bat baoyed ak oplotdosant sat exodw aa Sales to sof Anew tseq aldd Io sesitsow ofT :eormowyorrA Snenqgolaveb aut be shaton bees doom You0t misra sag ant edo sd my ay 1 Bas a ‘pee of paren nove nese MOTE " garxot ; ro dsevysd Bos tooutsoxt noaviod segqelo ox eysb mM Dh, shed} go edum Hoatd doiv aelteed mast net ,HeP ieivesd Inet sgok Syaves eh, syermes teh : onibost ais asload bv Bate «Ray to angie woda adaetq Bote’ 2519s. y9q WG Te abavog S\L £ +o anedasxor Stiotin wz pbow wold snerlt rereqgod'iaed AETOT 4: ott onll s meewied toed @ at ebLelt 9 OR 2 Oo wovieuwades bast yom ada off Runs Sorta gg avewome yilerosaas syvew atlibs 3 ihe eovsol odd saianud tec ‘io Buyod i vfows of ofisdiserg od yea ot let aaron Gad al eee House flies: This is the time to begin action on a house fly control program. Practice good sanitation, followed by residual sprays of Diazinon or ronnel, Supplement the spray applications with a bait treatment of DDVP, Diazinon, Dipterex, malathion or ronnel. Stored grain insects: With wheat harvest rapidly approaching, take steps now to protect the new wheat from attack. Clean out old grain and other debris from in and around the bin. Apply a bin spray of 1.5% premium grade malathion or 2.5% methoxychlor to the point of run-off. DDT should not be used for this purpose. Treat the wheat with a premium-grade malathion protective dust or spray at the rates recommended on the label. Anyone planning to store oats or shelled corn for longer than 6-8 weeks would also profit by using this treatment. Treated grain may be fed to livestock or marketed with complete safety. Caution: Before applying insecticides, read labels carefully and follow all precautions. This not only will insure personal safety, but will eliminate insecticide residue hazards. KEKKRKEREK This weekly report was prepared by Steve Moore III, Illinois Agricultural Extension Service and Illinois Natural History Survey, in cooperation with the USDA Agricultural Service, Plant Pest Control Branch, from information gathered by ento- mologists and cooperators who send in weekly reports from their own localities. SM:mfb 6/17/60 ; “> Loxtnos yit savod o wo soldes ained of omikt sid ek. “ca nomtsstd to ayerqe feyrblaor ‘W AswoLLot folders wtonissiG Iva to tasmtnerd died g nthiw a la agote odes yatdosorqya yh Lope daaviad saat So setoondn aitdeS roadde bas ttaty bfo duo nest) .dopdite movk yo colidsten efars suiswoxg de. to yatae atd a ye ; saogug efdt sot heavy sd dou bivede TAL .Vhe-auy to datog ols of ysiga To tauh evitostorg s yokdtalem ofa nemrbwerd 9 dtiw toedu edt ct oilssia ro adas ouote of gatonele snoyeA .fisdel edt ao Dbehosmooay ax? .tasmestt obit gutew yd dio ose Sivow avleow 8:3 sadt toga wietes atelyuoe hiw botedusm to foodaevil of bot woffot ige ¥Llytewss efedaL bast ,soblotvosant yalviqge strote& stastatto Ifia dud orfetes Lsnenzed souvent Litw yfoo ton akdT .¢ swbrexss subtest Rag Settee Lerrut f: Tasabete akoatilt ZIT sxoo svet8 vd boreqeia aaw dxodet ylaloow att ATAU silt Wriw aoltsteqooo mi ale yuosvels Istutsh abou tley bia soivs -oons wit fs eo nottesmrotok w giottard Sordnod gaed gna lt wolves fo y seattiigon! awo “isds move a toces vislaow ahs booa odw arodatexoos tat ate FOR IMMEDIATE RELEASE June 23, 1960 INSECT SURVEY BULLETIN NO. 10 This is the tenth in a series of weekly bulletins on the general insect situation in Illinois (fruit insects excepted), prepared by entomologists of the Illinois Natural History Survey, University of Illinois College of Agriculture and cooperating agencies. It is designed to forewarn people in Illinois of impending changes in insect activity and to suggest abbreviated control measures. These re- ports indicate only general trends. Each individual should check his own fields to determine local conditions. Corn borer: Cool, rainy weather during this past week has changed the corn borer situation. Some moths undoubtedly were killed by rain and wind. Some eggs were laid on weeds and small grains where no corn was suitable for egg-laying. In other situations moths remained inactive during the cool nights but were laying eggs in the corn fields during cloudy days. Egg-laying will be concentrated in the most advanced fields, and damage may become noticeable within the next few weeks. Observe these most advanced fields regularly during the next two weeks. In a triangular area from Quincy to Decatur (Highway 36) to St. Louis, 50 to 80 percent of the plants in less than 10 percent of the fields have fresh corn borer feeding on whorl leaves, with 25 to 100 egg masses per 100 plants yet to hatch. Corn in these most advanced fields has just now reached the stage of develop- ment where corn borer will begin to survive. This is the week in this area to de- cide whether or not to treat. To determine the need for treatment, examine 50 to 100 plants for signs of borer feeding on the whorl leaves. If 75 percent or more of the plants show recent whorl feeding, check the tassel ratio. Measure from the base to the tip of the plants with leaves extended. Split the plant lengthwise, and measure from the base of the plant to the tip of the developing tassel. Divide the tassel height by the plant height and multiply by 100. Take an average of five representative plants per field. This is the tassel ratio. The corm will warrant treatment if the tassel ratio is 30 or above. Treatment after borers have drilled into the stalk proper will not be effective. In the area from Highway 36 north to ebout Highway 17, egg-laying is well under Way but remains low. Examine the most advanced fields carefully this week. Treatment, where needed, should start about July l. North of Highway 17, egg-laying has started and will now progress rapidly; treatment, where needed, should probably start soon after July 1. This may be the area where a few advanced fields could be hit hard. DDI it still the insecticide most commonly used for corn borer. Apply 1 1/2 pounds per acre as a spray or 3/4 to 1 pound per acre as granules. When spray- ing, arrange two or three nozzles over the row to cover the uppper one-third of the plants, particularly the whorl zone. Other insecticides approved for use against corn borer include endrin and toxaphene. Ensilage or stover of corn treated with DDI or toxaphene should not be fed to dairy cattle. Endrin may be used in this case, provided label restrictions are followed. oman Or it Black cutworms: Damage to corn is now being reported from most areas of the state and will continue to increase for the next few days. bserve low spots carefully for damage. If stands are still worth saving, apply 1/2 pound of dieldrin, ’ doesai Cerone; elt so entre Liud Lagre to aoivea a at ‘Ecelt odd ek ata oid to stelgofouodis yd boxrsqeng .(featqooxe absoent Sturt) elon bil ot bts oxudivor¢gh to spoftod abontL6y yiketeviaU .yevane yioteil femde “ous ko eioniill at efqos¢ mnsworet ot bonmetaab af tI seotorr -ot cae? .scouressm Lovinon heteiverdds teengue ot bas ywivitos tos ot ph, fort mwo eid dAposio Bloods Levbivibat soei ciliata LOrlenay Yao ranotdtbao alt bapasfo asd Moow case abst sakenh rodlhesw vebex food . rrortod emod ,bulw bas siet vd Bellin avew wibetduebay adtom.snmol nA Setysl-nge rot oldadiua eaw oros on svedw anigiy Ifeon baa abgew 26 aatvel stew dud addgta foro ot gatinh evicossi domkemer atom anole, ads mi bodertdneoicoo af Ifkw saivelraygE .eyeb — aichueh ebfert 09 | is 9 weloow wok dxow och aici ofdeselton smosed ys enomed bre ,ahloth Benerda saisew out dusa edt gekon, settee Cesare, eres sia aovba wane, sche € yawigtH) toteoatl o¢ yomind mort sete calcd Bo ablakt old to vee Of nach eval af aduealg edt to due OL “eq gosesm oyo COOL of “ist yeavee! Lxodw rio gathost te ott Bedsnet wos oa aan Abie tt beottercha taom saat af at0d sow oft ak ald? .sviviwa of afaed [ftw tetod moo. * yitsotd of don to taut ceLvoad «th oF iasrt oved 2 ~ tri 2 ah nate ; «3k o8 Rowe & To angie toy ach ee patie SISOS! WOHG C ot O@ setlutexs ,duisutgertd tor beer odd onterreteb of TO evom yO dxopotsg fy TT .aeveel £ Egostir eit oo Bod est | r "4 f ait to git sit oF sasd odd aerk suvesol .oktst [seead orld aoodo gat at oa Bas ,eniveiondet tasia snd itclye Rhine ba ‘seveol chiw a ost eSovid .foeast anigoleveb eds to gid oft of saala § vonget evik to systeva op ogiet ae a wiles rapt Sas ot, ont YX: tgoxt reer foe srn00 al? ,okisy Ioeasd est af ain? | : LeCroy iste ord ont hellinh overt faite tJnentsoyT Serie xo OF at ol evidestte od tom . * a ef - ivods of Sdvon oF wala. LH sort sotg edt aT ude Soe ows FaAoas ott : is ; nae SEE OMT rie a eh VEE SuOGR S deosce a bigeds See aor cost Tent (ie. Bodeste esl gutyel~t25 .7f Yyowlgsl to siireoHh ad novte woos wade vids: be ‘hy me baie ovonw ( woxed Std ed ifvon anlolz beessvhe wel s oredv s A “loge .wearod avog cok Rony’ 19 feom sbiotivooant ete Dlids of Te a 10 YArys o 28 sTon ‘Tad sctiog Ul aolaxon.oocikt to owt ognsirs Bell” senos Jiodw odd yivelvoidreg , edie. Oii8 if tected ooo Soutens aaw ae ntdooaat tents _ ty oes? Wa chiw heseesh anoo Xe ‘Svote. “0 sgelian= .onorqsxot i. BE ae «98S BLoy GL heas sd vem echtbot .afihhes witeo id hak to #2o%8 aos soyt Sodieyor anita! won ak atoo ot exemmd (ELOUSSIO oe ES | * atuge vol ovrgadt fs were shoee ok. OBE aan mp ois Rc cc Etiw bas big g$thlot& ‘to besos © Siide svs abscte af sagan Wt =O 1/4 pound of endrin or 3 pounds of toxaphene per acre as a band spray, directed at the base of the plants. Use as much water per acre as possible, and cultivate in- mediately, throwing dirt around the base of the plants to cover the insecticide. Cultivation may not be needed if the soil is exceptionally wet at time of treatment. Fields that are too wet to get through with ground equipment could probably be treated successfully by air if conditions arecritical. The same insecticides should be used. Full-grown cutworms are difficult to kill with insecticides. Applying insecticides after the damage is done and when most of the worms are full grown is a waste of money. If replanting is necessary, apply 1 pound of dieldrin, 3 pounds of toxaphene or 2 pounds of aldrin or heptachlor per acre before planting the field again. Make a broadcast application, and disk the material into the soil immediately. Armyworms: Scattered reports of damage continue. Observe rank growths of grain and grasses for the next few days, particularly in the northern one-third to one-half of the state. Armyworms in the southern two-thirds to one-half are mostly mature, and damage will drop off rapidly. Several reports of rabbit and rodent damage have been received. These pests cut up the straws into even lengths and usually pile them up. Damaged areas a yard or so in diameter are now noticeable in many fields. Armyworms are readily controlled in grain fields with 1/4 pound of dieldrin ork 1/2 pounds of toxaphene per acre. Usually it takes 1 to 3 days for results to become apparent. Do not harvest the grain for 7 days after treatment. If treatment becomes necessary in grass pastures to protect the pasture or to prevent migrations to adjacent com fields, use 2 pounds of methoxychlor per acre. Methoxychlor will prevent the worms from feeding, even though actual kill is poor. When using methoxy- chlor, allow 7 days to elapse between treatment and harvest or pasturing. Grasshoppers: These insects are now hatching and are concentrated in fence rows, roadsides, ditch banks and similar areas. Hard beating rains will kill these small hoppers. The effect on the total population can not be determined yet, Bagworms: In many areas these pests are still small enough to control effectively. Apply a spray made with 2 teaspoons of the 57% malathion concentrate, 3 teaspoons of 60% toxaphene concentrate or 1 tablespoon of lead arsenate per gallon of water. Caution: Before applying insecticides, read labels carefully and follow all precautions. This not only will insure personal safety, but will eliminate in- secticide residue hazards. Special note to vegetable growers (not for publication): We have received a wire that Sevin is now registered for corn earworm control at 1.5 to 2.0 pounds of active ingredient as 85% sprayable powder per acre. No oil is required. Treated fodder and forage may be fed to dairy and beef cattle 7 days after the last applica- tion. There is no time restriction on the ears for market. TERI This weekly report was prepared by H. B. Petty, Illinois Agricultural Ex- tension Service and Illinois Natural History Survey, in cooperation with the USDA Agricultural Service, Plant Pest Control Branch, from information gathered by ento- mologists and cooperators who send in weekly reports from their own localities. HBP: cm Ldlah for « ds Betosvih .yatqe boed e@ as suon seq enerigexot te ebayod e-10 atzbos ai stevitinve fins ,aldiaaog as estos teq todew coum as saU .adnelg ost -MHfoitooent sit tavoo od atusig edt to oasd odd banote dib eet : dnomessid lo esuisf is dew ylis sratdqooxe ei Loa oft it Hebssn od ton yas X £0 od yidsdorg blico taemgispo See asiw dyyoidd tog ot teow oot § Hivode append Ones 2 anit! rhaote ite ots anoktibaoo It tks yd’ adiviqgA .ashisivoeant dtiw [ftt ot FLyol@tip ote: auttowstre two oA, j 9%s antow eit To Faom sey Bus sob sk syaash aus woste on bavog £ vlauae .yxaessoed af eee eidred tos teq toldoedqed to witbls to aber Comite isbrotem edd aeih bas oteoitqge 4 q to eisworg dast evissd) .suatinos. sgsash ‘to advogen Bsveddteoe od it idd-ono aaxiiron out of Yivrelvollisd gaye wet dxog out x0F ao yisgou sts tisi-eno of abridd-ow ovsstvoes std ok amxowgrtA «¢: it SC -yfbiges Tio goub [ily syemeb ba i, mish ters box Dae iiddss To atrogar feravee . fig ulisves bas adtadel neve ots avetéa ade ay. blekt yaou ab sidesoisvou won sve tedomerb 58 : yak Ht vice OLS pnenaprenies Shee ro abadtien s\ > Y wok ataxs odd Seevred ton ol atcovaqas ¢ wit dootorg o¢ eountesq esats aft yissessen i cf foyxoutem to aSauog S vay ,ehlett toc Joeost he ~aodteonr enh pate «100g af Pops isudos ripuodsé neve .gatbeek mov? emrow odd Jaret Bircvutasg vo Jeovisd bus taemtsard neswied saqafs ot aysh Y wolls 2 2 eoreh fF Bodeyd bee unotdoded vou ats edoosss spesT Sree , easier {fbi £f d Srsil ,asots talinka Bows ae rss ST EB pnaoLahsot ey Se Neo aolktdeligog Iscot ant ao tostts off .aregiod . ite sis eatesg nerd paets Yoieo af rauoweed ; ' to enoorauer 3 ¢ dhw shaun Youre 8 eaaa Vlavidar » Hnogeelidss [ to sts exdciencioe axodyexod GOS to enooges: o apo kese “abi oy leuz i a5 .1 fatosgd bal a ar Cd At Or we 2 LOTIMOD NSTC L399 ot fees or soo ek rhived tedt stiw # ‘ wtes bottupst ef Li 1 (ettss ted saben eldeyexme FeO es seetberyat evitoa © “RS nt. CGS ore Bo teed Sas ytins of Sok od yew ogevot base tebhot: YF ete sit (ate) nisiy oot om af eved? sok 2 et ea fen Baw ipsa vYitteow sist’ ROANT ag MoH ghonifl£i bus ssfvisd Roianed uy Mries Arr vaot-deelS ,soivio® Levedlucivga ea odw etoderegocs bas atetgofou ef FOR IMMEDIATE RELEASE July 1, 1960 INSECT SURVEY BULLETIN NO. 11 This is the eleventh in a series of weekly bulletins on the general insect situation in Illinois (fruit insects excepted), prepared by entomologists of the Illinois Natural History Survey, University of Illinois College of Agriculture and cooperating agencies. It is designed to forewarn people in Illinois of impending changes in insect activity and to suggest abbreviated control measures. These re- ports indicate only general trends. Each individual should check his own fields to determine local conditions. Corn borer: In general, corn borer populations are concentrated in the west half of the state. In a triangular area from Quincy to Decatur to St. Louis, there are a few particularly advanced fields which would profit from treatment. The numbers of fields is less than 1 percent, but these should be treated immediately if they are to be treated at all. In the area between highway 36 and highway 17, corn borer are still laying a few eggs, but in general, even the more advanced fields apparently will have low borer populations and in only a few of the most advanced fields will it pay to apply insecticides. In the area north of highway 17, and west of highway 23, 1 to 5 percent of the fields will warrant applications of insecticides. The number of fields that would profit from insecticide treatment varies considerably from one community to another. The fields which are much further along than any other fields in the com- munity have moths concentrating in them and laying eggs. This egg laying, however, should decrease rapidly now. Not only will it pay to control the borers in these fields but with borers concentrated in them, it is an opportunity to reduce the number that will emerge to form a second generation. Treatments in this area should be applied between July 4 and 10, for best control. To determine the need for treatment, examine 50 to 100 plants for signs of borer feeding on the whorl leaves. If 75 percent or more of the plants show recent whorl feeding, check the tassel ratio. Measure from the base to the tip of the plants with leaves extended. Split the plant lengthwise, and measure from the base of the plant to the tip of the developing tassel. Divide the tassel height by the plant height and multiply by 100. Take an average of five representative plants per field. This is the tassel ratio. The corn will warrant treatment if the tassel ratio is 30 or above. Treatment after borers have drilled into the stalk proper will not be effective. DDT is still the insecticide most commonly used for corn borer. Apply 1 1/2 pounds per acre as a spray or 3/4 to 1 pound per acre as granules. When spraying, arrange two or three nozzles over the row to cover the upper one-third of the plants, particularily the whorl zone. Other insecticides approved for use against corn borer include endrin and toxaphene. Ensilage or stover of corn treated with DDI or toxaphene should not be fed to dairy cattle. Endrin may be used in this case, provided label restrictions are followed. BRAN Ot! HH 080 Black cutworms: Demage reports continue to come in, but ft. heaviest concentrations of this pest seem to have been along the west side of~the state. \\\\> Moderate infestations have occurred in the southeast and extreme north. ..\\\ “er ys b* ff .OW WUEERIIUE YaVaUG TMOeeuL toeank Lsxenon ot na subteliod visesw Yo estvea s of adttovele orit Se Bae liye odd to atakyofouotns yd bousgera ,(bedqeoxe atosent tinyt) alomEILl at nokteud, il e studivorrsA to ego! fod abonktil to ytlovovict yovied yroteld feadel al with pike Bone ‘to afoaitit of sfgosg arswexot ot Bang taeb af dX .aekorane “goktete saetl .aatuasom Lortaoo fotatverdds daoggua at bas ytivivos tooaal of sega 2L% owo aid voado Siyova Iaubivisct dopll .abne ts Levensy yino aheotbms ; ranoidibnos tscol omtan == ‘S At ent ok Dede wsneab0n eve enoicsivgog usted mico ,fetenay at syo%rod oiod bea: wStiuod .ta ot wuwidgosT oF youinp mort seta tsivansixd 9 oI .odate edt to toad th iy deans at mort dbtory Dtwow dokdv abfott Bbsonevbs yivedvoldisq wet B Sie | yloteiheum: betsow! od Pivote seers duc gosoteg £-nadt eael at abLeit Yo sted , Lia te bodseat ed od ots yout Th 7 antyss fica ox vouod axon . JL ysudgid bee 6 JE Yavin noswted poe ont ot AY kenga abtebt RacHatEs eton eft neve ,isrsmeg ok gud ) ais nanit nools tscdiyur foum oxs sitdw ebfori sd? .voddoke nha of Bue gatyet Dua modkt ok gattsttasoces sntom oved yttouat a ysg vi i ico tou .wou yibkgss sasetoed BLyorda yi Pogo Me ei FE omocdih mk bs stasdnested exoroo itty dud aplok% raomtpart oitexonep byosea sg miok of squxsme [fiw Satis sadnn lorineo ead tok .0f bas ! yfot asawted betfgqas- od ninars ssp. gid cok Raut pre taniore¢sh of Uioiw sit so sakbest astod ett doeio gnkhoek Lvortw- beboodxe soveot mWiw atnelg - ‘ka gir acd of tesla ont to gigthive Sas erect taal forte ab ed? .Gieakt reg tees’! .ovods ro O€ ai oltsx sovitootts of tom LLiw ss SoTEd mw.09 tok Eotdooans add ithe eb ‘Nid fer aeluseyte a3 tO Yauga 6 es ofos tod absisrocy S\t - Sens * fsson sotdd xo owt onnetus .sotyatrge cu Drow ont ylieivoltiagq ,adnetg odd To hbavorqqe eadioidosant samto ie aevose vo agatltent sssdaprod ¥en obrbot .olttso yrieb of Bet ; WaWOLKot 3a ee PEt OGet ; ramxowio Aosta fusg atdd To enoiverdaesnoa eved ancitedustng atexehol! =e Under normal conditions there would not be another generation of these pests in corn this year. But most people would not consider this a normal year. In about two weeks cutworm moth flight is expected, and these moths may deposit eggs in some of the water spots in corn fields. No one actually knows whether this will occur, but with continued rains and cool weather it is a distinct possibility that we may have a severe cutworm problem in July. Therefore, watch low spots, particularly in late planted cornfields for possible cutworm damage, if weather continues unseasonably cool and wet. orms: During the next few weeks watch for this pest in luxuriant and lodged areas in oats, timothy, and other grassy fields in the northern one-third of Illinois. Some small worms are now present, and moths are flying in large num- bers. Armyworms are readily controlled in grain fields with 1/4 pound of dieldrin or 1 1/2 pounds of toxaphene per acre. Usually it takes 1 to 3 days for results to become apparent. Do not harvest the grain for 7 days after treatment. If treatment becomes necessary in grass pastures to protect the pasture or to prevent migrations to adjacent corn fields, use 2 pounds of methoxychlor per acre. Methoxychlor will prevent the worms from feeding, even though actual kill is poor. When using methoxy- chlor, allow 7 days to elapse between treatment and harvest or pasturing. Grape colaspis: Spots of stunted purple corn are showing in cornfields on clover sods particularly in the northern one-third of Illinois. In many of these instances grape colaspis larvae have been feeding on the roots. The larvae are mature and are pupating, thus the corn should soon begin to recuperate from their root pruning. Hessian fly: This pest is more numerous in western and southwestern Illi- nois than for several years in the past. They are now in the flaxseed or pupal stage and will emerge this fall to deposit eggs on early seeded wheat. High fall populations can be expected. Caution: Before applying insecticides, read labels carefully and follow all precautions. This not only will insure personal safety, but will eliminate in- secticide residue hazards. KKH XK € This weekly report was prepared by H. B. Petty, Illinois Agricultural Ex- tension Service and Illinois Natural History Survey, in cooperation with the USDA Agricultural Service, Plant Pest Control Branch, from information gathered by ento- mologists and cooperators who send in weekly reports from their own localities. HBP smfb 7/1/60 =f. i if ve ses ‘to coltsisaos “vottons od dou bivow ovedt anotdtiaoo Semcon stohau eYeoy Learson £ aide eg al o fon Sloat olgoeq deom tv&@ .taey eidd oroo af eine ¥ shaodsh yer anh: ao ,bedoaqxo ei dightt dion amowhyo asloow owt ekdd vtesitori awoc2d vit Leuch op 200 Of .ablert nroo si ategqa tedteaw odd to smog ‘at Wilidtasoy gealtel Gg al df asriggew [eos bee edie Dounbtaos atiw dud ytwooe J .atoca wol dotsw .sioteysd? ~ wt at sefdoxg mows sieves as Rina Yeu ows wedisow IL .syameb srtowlso sldkeeoq xo ablLoltrroo hedasla etst ak yiteluoidiag ow Bie [ooo vl denoasoats epeiaginite nk Fasc, a sok dodew sasow wot dxon sad goekiwd = sarrrowyorl Dtidt-eno ertesduon od at ebLet? yeestty vodto bas ron yadeo af agons te baybot bos Siar! sane] ai gaiyti os adtom Sne .gnesotg wou ste aurow Ifewa emof stom kLfl’ Ro , nksbioth to Sovog Wi détw abfeit ithowy ot halfLoutaos bi eer eis auzowwock sated o¢ atfivesx tot aysh € of £ seded ti vifepal’ .suos seq srrsdgax ot ‘to abavog S\L Lf to taentsert SL .dromtssid wets aysbh T vot stews ert teevied ton od = .trotaqae smooed anokd nov bebe od to suutasg odd vos: org OF aesusesd eae ig ak yxsasoosa semoged “Lib 2 yon cet, tolisyxodiem to abayog $ san .abisit axoo dnsosthe of - oog Bb Tits Ieueos Aayold seve .yokbest sort emxow ott dnsvorrg nes geq to Saswied Boe ooomasct asowded sacels of ayeb Y wolls ,%o, . ; f $3 t joe o%p mios siging Devmeite to atoge satgesLoo sgesd Optitt Te DSxlatescio prance att at yitalvotFisa aboe tevoLo fo | : satoor oft no gothest sved eved sevrsl eigesioo sqssy ssotatenk - xfedy sort aisioquaet ot giged anes bivoda mios edd audi .noiteave ove Sos stuptem | sankey Foor WIZE svotaswdtver fing niedeaw mk exovouen ot isqugq =O besarelr edt at wor svg ved? + taeg akdP v0 sebesol oft of avesy Loxavad: oo Palyi Ny whois [e} eniw Dehacsa AG sARS ot Iist eldd snvows LLtw das sssita batvesxs ed sso anoktsingog | wolfot ons yLinvisrao ale Seer ,ashiottosent yatylags Pah 5 aie eng atsaimtis [flv dud snortepoerg Lie | JBHOMISY orvacl “Gite ylgo j ~ebresad wihikeos sbioltioss x > oe a ae a | ry | i an r 7 pts - ra ry a . As eVots ef .H oH yd horavery sew deowsa vittoow etait E .yevine viodalh Leurteli etouiiit bas oolvyse ackanet = | pee ) deel trsl® .soivred fsuvdivoligs | a ee ee oh Fi Ay rs Cokh | re gn ep ni ealdifssol wo viedt gowk atvoder yisleew at Ige3 erly ara ractach soo bos atetyoLom exes: TE Oo*F-“\y oA / OR IMMEDIATE RELEASE July 8, 1960 INSECT SURVEY BULLETIN NO. 12 This is the twelfth in a series of weekly bulletins on the general insect ituation in Illinois (fruit insects excepted), prepared by entomologists of the illinois Natural History Survey, University of Illinois College of Agriculture and cooperating agencies. It is designed to forewarn people in Illinois of impending hanges in insect activity and to suggest abbreviated control measures. These re- orts indicate only general trends. Each individual should check his own fields to etermine local conditions. Corn borer: It is too late for the best results with insecticides in llinois except in the northern two to three tiers of counties. Where needed, treat- ents can still be applied in this area for the next few days. To determine need for treatment, examine 50 to 100 plants for signs of orer feeding on the whorl leaves. If 75 percent or more of the plants show recent horl feeding, check the tassel ratio. Measure from the base to the tip of the lants with leaves extended. Split the plant lengthwise and measure from the base £ the plant to the tip of the developing tassel. Divide tassel height by plant eight and multiply by 100. Take an average of five representative plants per field. his is the tassel ratio. The corn will warrant treatment if the tassel ratio is © or above. Treatment after borers have drilled into the stalk proper will not be PPective. DDT is still the insecticide most commonly used for corn borer. Apply _1/2 pounds per acre as a spray or 3/4 to 1 pound per acre as granules. When praying, arrange two or three nozzles over the row to cover the upper one-third of he plants, particularly the whorl zone. Do not apply DDT to ensilage or stover to e fed to cattle. Chinch bugs: There are a few isolated cases of chinch bug migrations ‘rom small grain to corn. If control is necessary, apply 1/2 pound of dieldrin per ere. If chinch bugs are still present in the small grain field, apply dieldrin 0 a 2erod strip into the grain field. Do not harvest the grain until 7 days after ‘reatment, and do not use the straw for feed until 30 days after treatment. Grasshoppers: Small ‘hoppers are concentrated in fence rows, ditch banks, oadsides and similar areas. Although luxuriant foliage in these areas may hold she grasshoppers, they can be easily controlled now with 1/4 pound of dieldrin or 1 1/2 younds of toxaphene per acre. Do not graze dairy cattle on the sprayed areas. Stable flies: These blood-sucking flies decrease milk production more shan any of the other flies. Since they breed in rotting straw and similar wet, lecaying vegetation, we may expect a heavier than normel infestation this year. Sprays of pyrethrins with either tabatrex or R-326 as repellents will prevent most 9f the losses caused by these pests. Face flies: This new pest of cattle has increased slight gail the yast two weeks and is expected to increase for the rest of the « At present, the spray used for stable flies can be used for control. It should be us: articu- Larly around the head, or as a smear on the head. A bait developd\by the Natural jistory Survey may soon have label clearance. ayy BY Nios House flies: This insect will multiply rapidly and become a nuisance if the weather becomes warm. Practice good sanitation and follow with residual wail el 8 vist . TRATIA Si .0u WYRMIUE yevse Lorent . 3 ole Ho ankdol ind yidlesw to eeiiee s ak ddtfows oft ef ait faotowotens yd bs Staged badgeoxe Negus — abo a ft No fash Jo sysLiod ehomkilt tc ywhexevintl , io — tbeonst TD '€ sh LET nt alqoeg otswetot of beratest a asta so ioutaen bedetvyetdds sasagua of a as ee ‘desen? b eis Divodes Ienhivibat cost .abasyd Levensn vino odes ‘a rn Hokts WHYIOSA GOST Seeiee sissod nso5 eSposys. Bria ema oes Ha Saipan Lae NE sf ‘Zo eit atest iets test TsSy Sine oisvse 3 DS etowkilt cede of es oi daxgua dvods aborted Haste rae Dae < BRB vals ak ekat SaST8 rog 4 £ SUoves E Oks GAte gf foutuos Siies to dostis esi enn es bio ,etsoe Llamas 20 ud E is aivbeode go sosdtexs¢ wet yy tare Ne > ie La) Wk LOn iO ah, assy ait to dtdsoreg vinyee at anoktateatat scans far Rcrgies: Liaw oray ssc stoat fs: t ohtseh nwond tom ab: amazid eaialate Sas. pm iiviv aieh Y seer Pe ‘be Sfoge initesk lags ory 2g inens 8 Pioeviee pres ee giusow exarhy ae to aval Oat oivoivnteas wot ae there is an average of one or more masses per plant, apply DDT at 1 1/2 pounds per acre as a spray or 1 pound per acre as granules. Do not apply to corn to be used for ensilage or stover. Endrin can be applied to ensilage corn within 45 days of harvest. Bagworms: These worms will soon reach the peak of their destructiveness. They are now about 1/2 to 3/4 grown, but control is still possible. Use 2 teaspoons of 50 to 57 percent malathion concentrate, 3 teaspoons of 60 percent toxaphene con- centrate or 1 tablespoon of lead arsenate per gallon of water as a spray, and apply thoroughly. Do not use malathion on cannart juniper. Picnic beetles: This shiny beetle about 1/4 inch long with four yellow spots on its back is the one about which many people are now complaining. These beetles are appearing in large numbers around the farm, home and garden. They are scavengers, feeding on overripe or injured fruits and vegetables and other decaying materials. Home gardeners should use malathion for control in vegetable and fruit crops. Follow the manufacturer's directions on the container. Caution: Before applying insecticides, read labels carefully and follow all precautions. This not only will insure personal safety, but will eliminate in- secticide residue hazards. HEKKKXKHKHEKREE This weekly report was prepared by H. B. Petty, Illinois Agricultural Ex- tension Service and Illinois Natural History Survey, in cooperation with the USDA Agricultural Service, Plant Pest Control Branch, from information gathered by ento- mologists and cooperators who send in weekly reports from their own localities. HBP :mfb 7/29/60 "Danas % j qs i oe Nee the yee ye “ Pp esse om estas {gOS 2 ate $h “tevolz to opel SOLOF mad pi aes anes ee lroad SSRs OS ,3igsecodant it .eqoxs sostg Ife ae ER? oidoos a ee . te 5 ono cs a > & : . CB / FOR IMMEDIATE RELEASE August 4, 1960 INSECT SURVEY BULLETIN NO. 16 This is the sixteenth in a series of weekly bulletins on the general in- sect situation in Illinois (fruit insects excepted), prepared by entomologists of the Illinois Natural History Survey, University of Illinois College of Agriculture, and cooperating agencies. It is designed to forewarn people in Illinois of impend- ing changes in insect activity and to suggest abbreviated control measures. These reports indicate only general trends. Each individual should check his own fields to determine local conditions. Face flies: This pest is increasing rapidly and it has become quite noticeable thet animals are fighting these flies. Face flies resemble house flies but are slightly larger and they cluster about the eyes and nostrils of the animals. The eyes water excéssively, and the animals bunch up, shake their ears, and rub their heads instead of grazing. DDVP, 0.2% in a mixture of 75% corn sirup and 25% water has been approved as a bait. Make daily epplications with a single six-inch stroke of a small paint brush to the forsnceds of cattle. Morming applications of the bait are recommended daily for a iwo-week perio, followed by other applications as needed. When the face flies feed on the bait, the population is soon reduced to non-economic levels. Products conforming to this label are or soon will be on the market. For best results, use only those DDVP baits specifically labeled for face fly control. Similar products containing DDVP are on the market to be used as house fly baits. Some of these commercially prepared house fly baits contain an added material to extend the shelf-life of the bait. This added material, although not repellent to house flies, repels face flies. Until DDVP face fly baits become available, apply repellent sprays con~ teining tabatrex or R326 in combination with pyrethrins to the heads of dairy cattle. Special face-fly-repellent sprays containing these materials are available and may be expected to reduce the fly population 60 to 70 percent. For beef cattle, use a backrubber containing either 5 percent DDT or toxa- phene in oil. Success with backrubbers will depend on whether the animals can smear a liberal supply of the chemical on their heads. Backrubbers constructed with an outer layer of canvas, burlap, or cloth, as opposed to metal, would be best for this purpose. Allow 30 days to elapse between this treatment and slaughter of the animals. When DDVP face fly baits become available, they can be used on both dairy and non- dairy animals that can be handled. European corn borer: On the basis of population surveys for first- generation corn borer, it appears that second-generation borer numbers will be about the same as last year in northwestern Illinois, lower in northeastern and central Illinois, and higher in eastern, western, and west-southwestern Illinois. Highest populations will probably be in the west-southwestern, western, and northwestern areas. Because of the wide range in planting dates this year, second-géneration borers may tend to concentrate in late-planted fields. Field corm that averages over one egg mass per plant may profit from one application of 1 1/2 pounds of actual DDT per acre as a spray, or 1 pound in the form of granules. Do not apply to ensilage corn or corn stover to be used for dairy cattle. Sweet corn canners should,be ready to protect corm to be harvested after the 20th of August. ee NSS HEGIGA PDALGEMNT HO - Fe a ay “Ol i SFONsy ay ek ser Few £O Ax BLKC fom gods rEss5 Eta 4 Te qetera oft ek eidT oeent thuxk}) akfontligt at rotteudtie fosa oU .vovus yrodath fected akon bier OD) Weogs te atorirny doesce tk asydedo got s dasaave os brs £ yiao sdeoibal edtogqer “yr i. dos® .abmrern: *, + iyey Botesotont ia »B9f0t gaeds srlits : aie tole matauty vorit B races) Honud alssites at Gus aac? whe os 4 oi) a in0 m4 Le =) hfe ate ays dud ‘gapoxe “ssday geye eat wpullsets to bestent ahser . » es A SiO Sf s t ane PBS ero: add ot sleutd “owe g tor yiieb no Soest asklt sont sieotaos aetouSord ~ s a od ee} £ bd rf acoitsoiliccas bavelilot CNOS Ge Ost oy Beovhey hooe Tove aenine ALY ROOD TC Seaeiige aoc oF fmfa .fotiuos ylt os Smet Rig pen ax Saadxe of Ip inreten tr £ a eaued oy ar wef foaget “3 Smooed beaces I pie Sigil se ay :. RaW She od Vue ate Ss! mane sice UR need fos - ol fe ann sS d wm Ohta ey = ba wh et . Men ls. Ste re SGCHIRISG & sind 2 ive i Of rodue Be HIS He 0) 9 woLth aagaenig “fk gost Tad aad Sess alemioes yrisd at ~ OO (0 fiends HSS ented ul oe oe FE yEsHod 20 no Hoktersney yy teaol es amse sdt i doid Bas .elenrLil fedora [fiw saortetugog apart oe Silo 8 85 sion Tae sioy “to stes tootourg oF rt ot Reryteab ak ot see nnitsrteqoon bre moo Lescol ortwretebh of tied § as ° =O Corn leaf aphids: At what stage of plant development this aphid actually damages the corn is not known, but the greatest damage probably occurs during the pretassel to early tassel stage. This is also true of sorghum. In severe infes- tations to corn, apply 1 pound of malathion per acre. Since the effect of aphid control on yield is not known, this treatment should be tried only on a small scale and accurate yield records should be taken. One-fourth pound of parathion or phos- drin may be applied, but only by operators experienced in handling and applying them. One day should elapse between applications of phosdrin and harvest, 7 days with malathion, and 15 deys with parathion, These materials should be applied to sorghuns in the early boot stage. Allow three days to elapse between application of phosdrin and harvest, 7 days with malathion, and 21 days with parathion. orms: Infestations of this worm have been reported from grassy fields of corn in northern Illinois. If leaf feeding becomes severe, apply 1/4 pound of dieldrin or 1 1/2 pounds of toxaphene per acre. Follow label precautions. Caution: Before applying insecticides, read labels carefully and follow all precautions. This not only will insure personal safety, but will eliminate in- secticide residue hazards. TORE This weekly report was prepared by H. B. Petty, Illinois Agricultural Extension Service and Illinois Natural History Survey, in cooperation vith the USDA Agricultural Service, Plant Pest Control Branch, from information gathered by en- tomologists and cooperators who send in weekly reports from their own localities. Ne nee 8 qi as i sce Bas) notdtered to pond douvoleant .ogh -weds aniyfgqge Ona goitbasd ok beomsiiogqee 2 tiv ayso Y qtusvred bas aitheodg To aso amitgioa o¢ boiigqgs of Biveda aleltedem seed? ,aotdtarec abthaor¢ to soissetlocs asewted sages of ayeb sett wollA wconddeteg Adiw eyed 19 bas .wokdtelan atiw ors y nbfolt yeasig swoxe batvevsy neacd eved orcow ald to enot to Buvog u\f ylcgs .2teves esmoded pathos tasl tI sntonetet ? onciiaaossd isdal wolfol .oxoe teg¢ arterignxot ‘bs abacvog ¢ wolfo? bas yflviemo eafedel Beas ,evbloltpeent uber cee sivtod it wok sdgctnife [fiw died wutetan Leeoarer cement (Liv ylno se Pai Letedicodegaé aboutsfS . ted .& .H yd Asusgetq esw trogex AQOU odt Hiv notsevoacos mt worm yrotail Iewudell efoohf[l ons eoive “ao yt Rerodieg aod. i Stok ok moat yclotant foxrdaod tee toald .soivred astthlsoe! awo ther. sowk aevoqeat yisesw mt base ow exodarsqooo bas FOR IMMEDIATE RELEASE August 12, 1960 INSECT SURVEY BULLETIN NO. 17 This is the seventeenth in a series of weekly bulletins on the general ine sect situation in Illinois (fruit insects excepted), prepared by entomologists of the Illinois Natural History Survey, University of Illinois College of Agriculture and cooperating agencies. It is designed to forewarn people in Illinois of im- pending changes in insect activity and to suggest abbreviated control measures. These reports indicate only general trends. Each individual should check his own fields to determine local conditions. Face flies: Populations continue to increase. Some farmers are reporte ing as many as 80 flies per head, and it is very likely that populations will be- come greater during the next month. DDVP, 0.2%, in a mixture of 75% corn sirup and 25% water has been ap- proved as a bait. Apply daily to the foreheads of cattle with a single six-inch stroke of a small paint brush. Morning applications are recommended daily for a two-week period, followed by other applications as needed. When face flies feed on the bait, the population is soon reduced to non-economic levels. It is hoped that products conforming to this label will soon be on the market. In the mean- time, standard livestock repellent sprays for dairy cattle will give a few hours' relief from the flies. Backrubbers that enable the animals to rub their heads on them can be used with 5% DDT or toxaphene for beef cattle. Allow 30 days to elapse between this treatment and slaughter. European corn borer: With the cool weather of the past few days, it is entirely possible that pupation of the first generation has stopped in northern Illinois and will not continue. This means that the second-generation population in the northern area may not be so large as anticipated. Although egg masses can be found, no concentrated heavy egg-laying has been observed as yet. Sweet corn canners should, however, continue to carefully check fields that are 10 or more days from harvest and apply control measures as necessary. Along with corn borer, corn earworm may well become a serious problem on later planted sweet corn. Fall armyworm: Some late fields of corn have spotted infestations of this pest. The leaf feeding of the small worms is now noticeable as they eat small areas in the leaves and only the white leaf tissue remains. The worms are found deep in the whorl. They usually attack late-planted fields, DDI or toxaphene can be applied,provided the cornis not to be used for ensilage or stover,. Corn leaf aphids: There is little information on the actual effect this insect has on yield. As a consequence, positive statements regarding benefits of control can not be made. It is known that heavy infestations of the insect are related to barrenness and decrease in ear size, but no actual figures on percent of plants infested and effect on yield are available to make specific recommendations on when or when not to treat. We have had reports that 10 to 20 percent of the plants in a few fields are covered with aphids. If aphid control is to be attempted in infestations of this size, leave an untreated section in the field for yield comparison. Cel , Bf dangers | QeAMITA | TS .Ou WEMLIUG Yavea Tomenr wit Lavenes odd ao anieei.sd yinlesw to seirten a mi Aineataoves od ef aid? to etetgolamodis yo Howsjorg ,(Dbotgesxe adogach dina) eee SE a smiiivoitga to syeffet + sahil to yWicroviall .yevaed yroteald Laawhoil att To eho tk Lit ak _oigoss Aeevetos of hamgie as si 3D eters ud. sBomesom couteos Sera nie daszau. ob ban ydivides gooenl ot asatarlo awe eke! siovis Ofucde Levbivibnt dont .obseat teuereg ylso odsotbst atzogen., aaucidibaos Lasct eitadaae a eCUOIST SUA Sramssl anol ,aesevont of sunihwos sroksaivgag aera 7 wot Lf cnodtalugoy oatd wielil vaev a? df Snes ,faed veg aeflt Seren dxer oot eae aaoy Pe. TS neo! usd tetew 229 Bas guys wise ST to osudvin @ ait .OS.0 ,SVGE Lotiexte alanis 8 ete oidhao to ahestouo: om of yilieb yigga wis? 6 aa ivi & tok ylish Aiabes amioexy aye acubbonkiows aa —— we Cement TEEOE (lame 8 to ator BOF pa last aé Bsoltea gga “onvo yd hau, titet ,bokver tsar. : ( att oogesioe of fanuberx Hook a) Boléaiugod ent rs eck amo | ARG sh us ad aoor iLiw fedal abd? oF sotwostnoo adoyborg tedt paso! ane at elias ee gh wok ayo: taalfoqes doodaavil Grekvedta + Skt oo apsed “iol dey cat aleatios edd sfdens deadd evade eigen eeghlh och? mot pred ( ovisin oF eysi OF voli. .edihiiso teed sot saargexat ao Mid we ete beeu ad ass wEDd: nse sfc brn saeméseud ahaa heW Re RIGS AK ea Seo utd ‘ ees a “SRSES sca ylatiing cooe ackh &: niesen Site seer ied soa iitw Bee abomk cet . " phiicaenestiderh as aaiel oa ene Soa Yam SoCs se Fuels cere os ME ; > wwaed betediaeoron on ,bevok ad eeonde gsscd eae nays, Ge Gendeew Dooge ecg g Re — fobisiecssy waved ok - Oa guMkietor earthy SUA 2SMRsS Ayo oa ‘ wort -eyob ‘Bonn co OE suas chen “MGB BIOS ywtovod os Sony DOOLA, | eee Fosve adnan dy ? TRS OS $ @. some sets ee ede hye + afi al ayiiny SS nue whESet Ttol mi yd ear a hay erat FD Bao ; “0 pay fists ants? fas SE ee wee aisle Sasa Repecickai one fie cabins Tool. I. ; “HSE “De: “Ey pac ead dooank »eheet ox! doom oes ferrin 4 geohnowred? oF Setaret aye Slein, no dost ts Sia betectil adnaly ayer eW deed of con medv vo asa ao ; #92 ar hevteves ovo ahtelt welk 4 of miges 4 tke Ges cal wD a In severe infestations to corn, apply 1 pound of malathion per acre. Oneefourth pound of parathion or phosdrin may be applied, but only by operators experienced in handling and applying these materials. One day should elapse be- tween applications of phosdrin and harvest, 7 days with malthion and 15 days with parathion. These materials can be applied to sorghums in the early boot stage to control aphids. Allow three days to elapse between application of phosdrin and harvest, 7 days with malathion and 21 days with parathion. Northern corn rootworm: The adult, a pale green to yellow beetle, feeds on corn silks. Some areas, particularly in southern Illinois, have infestations severe enough to interfere with pollination. This is particularly true if the hybrid has a tendency to be incompletely pollinated. One and one-half pounds of DDT per acre readily controls these beetles. Do not apply to corn for ensilage or stovere Caution: Before applying insecticides, read labels carefully and follow all precautions. This not only will insure personal safety, but will eliminate insecticide residue hazards. TOI This weekly report was prepared by H. B. Petty, Illinois Agricultural Extension Service and Illinois Natural History Survey, in cooperation with the USDA Agricultural Service, Plant Pest Control Branch, from information gathered by entomologists and cooperators who send in weekly reports from their own localities. ; oq sdinvotesnd 3 fete 3 offigad Bk hennabsogxe Bgoottsokflogs ssewd y okddaus Mt s fLowrrtoo ot » Y teovrsd nae A ee ry cuts TGQ erence Rove «asd Spudye 2698 seg Ta stovata yete “ at reey har ines Ltt (OAT 0 2 at f PIOUS: Ad ani oy be Es Peale) 9 2 ool eres no onasng eid dixgl Bares | ae oLomodas . ; ; . LEA FOR IMMEDIATE RELEASE August 19, 1960 INSECT SURVEY BULLETIN NO. 18 This is the eighteenth and last in a series of weekly bulletins on the insect situation in Illinois (fruit insects excepted), prepared by entomologists of the Illinois Natural History Survey, University of Tllinois College of Agricul~ ture, and cooperating agencies. These reports are generalized, and each individual should check his own field to determine local conditions. Face flies, This insect continues to be serious on cattle and horses in the northern half of Illinois (north of Highway 36). Herds this past week averaged hO face flies per animal in this area, and one herd averaged as many as 130 per head. In this same herd a single animal carried over 300 flies. Runny eyes and eye diseases are common among cattle bothered by these flies. In addition, infested animals stop grazing, bunch up, twitch their ears and shake and rub their heads. The energy cattle spend in fighting face flies, coupled with shortening of the grazing period, lowers milk and-beef production. The situation is not expected to improve until after the first frost, when flies will begin to hibernate. To estimate the severity of face flies on a herd, make counts between 10 a.m. and 4 p.m. on a sunny day. DDVP, 0.2%, in a mixture of 75% corn syrup and 25% water has been approved by the USDA and FDA as a bait for face flies. Apply daily with a single six»inch stroke of a small paint brush to the foreheads of cattle. Morning applications of the bait are recommended daily for a two-week period, followed by other applica» tions as needed, It is hoped that products conforming to this label will soon be on the market. Repellent sprays used against biting flies on dairy cattle will give a few hours! relief from face flies. Lasting sprays of Diazinon or ronnel used inside the barn on ceilings and walls against house flies may also help to reduce face flies that enter buildings and sheds on cool, cloudy days. Backrubbers that enable the animals to rub their heads on it and smear on a liberal amount of insecticide can be used with 5% DDT or toxaphene for beef cattle. Allow 30 days to elapse between this treatment and slaughter. European corn borer. Development of this insect is slow because of the recent cool weather. in the northern area (north of Highway 6), less than 50% of the first-generation worms have pupated to form second-generation moths; 85-90% of the worms that pupated have emerged as moths. Egg-laying in the late-maturing fields (pretassel to fresh silk) remains low. Counts averaged 20 egg masses per 100 plants in these fields in the northern section. Between 30 and 40% of the eggs were hatched, but egg-laying should continue for the next two to three weeks in this area, The large number of late-maturing fields available to the moths for egg-laying will help to reduce numbers in any one field. However, late-maturing fields will still profit from treatment for the next two weeks in this area, pro-= vided there is an average of 100 or more egg masses per 100 plants. Optimum time for treatment is past in most of the area south of Highway 6. Corn leaf aphids. There is little information on the actual effect this insect has on yield, and as a consequence positive statements regarding benefits of control can not be made, It is known that heavy infestations of the insect.are related to barrenness and decrease in ear size, but no actual figures on percent of plants infested and effect on yield are available to make specific recommenda-\ tions as to when and when not to treat. Timing of treatments may also be as f Sse sis eee DLA ylileey SE fash Dos vd pewsqer arosans tivvi} efons anofisutis toaaat Si2 ydrarey ial) bak Bloctifl sd# % SSUDiVESLE Bore feos ers adrores eforous ihorsgeco bus ,siuet oan mo eic foedo Biuorta eae ta oa “‘Sveddiron orf nt Lemias tec ask opst a & Brat onee * abet rh a Heerl Sosy Tra st ,asklt avlede brs ae “Igy AMissxy Adiw cri Svorterts ot tO BF Ao.td Bude oct. oy peered frye set gsire eee D Sensi -oT6h & Gn eq 4 Sas pit. CL ond yd ‘ aS es others ova ¥ Xe LeEyIees ne AAO Bee eee Shr gr a feran Praca AS Re soy igvols tesuc oie ee pete 42 Sie DE Pw abe iyoow to Lode ratzions: Ses ary eae ano rd ee rane Pk) Caen ones st frras Tai abe a tel nee Cane) TUMOUR DTT ¥ -” F Cet os a eyed py pio cir, — eves . wed f EE me Se HAs . wees rs : @ eepcalin’ Be = - , ei: PSM WIE Wades Cle ane ay Sows] P27. FOR IMMEDIATE RELEASE April 28, 1961 INSECT SURVEY BULLETIN NO. 2 This is the second in a series of weekly bulletins on the general insect situation in Illinois (fruit insects excepted), prepared by entomologists of the Illinois Natural History Survey, University of Illinois College of Agriculture, and cooperating agencies. It is designed to forewarn people of Illinois of impending changes in insect activity and suggests abbreviated control measures. These reports indicate only general trends. Each individual should check his own fields to deter- mine local conditions. Face flies: These pests of livestock have been migrating from their hi- bernating areas to cattle during the past two weeks in the area north of a line from Paris to Carrollton. Occasional herds, particularly adjacent to wooded areas, have averaged as many as 20 per animal. Animals with these high counts are beginning to fight flies, and their eyes are noticeably watering. Populations will probably not increase noticeably during this cool weather, but now is the time to start a control program. It will have a marked effect in reducing later populations. Livestock farmers should observe their cattle on warm, sunny days when they are in the field. Flies that are in and around the eyes and nostrils are usually face flies. If there is one or more per animal, start a control program now. For dairy cattle, apply DDVP commercially prepared face fly bait daily to the animal's forehead for the next 2 to 3 weeks and then every 3 to 5 days as needed. For beef cattle, use 5 percent toxaphene in a backrubber. Homemade backrubbers work as well as the commercial ones. Run a taut line of 4 to 6 strands of barbed wire Prom a post about 5 feet above ground to a stake in the ground about 9 feet away, and wrap with gunny sacks. Saturate with the toxaphene solution. Place the back- rubber where it is readily accessible and will be used. Do not treat cattle with toxaphene within 28 days of slaughter. Hessian flies: Questions have been asked about the spring brood of flies. No control measures are known for this brood. However, emergence of flies ranged from 50 to 75 percent this week, and eggs are being deposited on the upper surface of wheat leaves as far north as Springfield. Spittle bugs: These insects are now hatching from the overwintering eggs. Controls, where desired, can be applied this week. One or more spittle bugs per stem should be present before control is considered. At present the insects are tiny and difficult to find, and careful examination is required. Populations will be highest in northern Illinois. To control spittle bugs, use 1/4 pound of lindane per acre or 1 pound of methoxychlor per acre. Lindane does best when air temperatures are over 60 degrees. It will also control clover leaf weevil and aid in control of pea aphids. Do not apply lindane within one month of harvest or pasture, or methoxychlor within one week. Clover leaf weevil: Clover is now beginning to grow away from damage, but an occasional field in central and western Illinois has a high population. If damage is severe and aphids are also present, use lindane; 1 1/2 pound of methoxychlor may be used, particularly if pasture is involved. Pea aphids: This insect is increasing rapidly, particularly in alfalfa fields in central, south-central,and southern Illinois. Warm weather will enable PORE {3a le = RAALIGH ARATE AO eran Wate es way eg ane rnc (SOKS aF5S2 f ats Pe ee =e pa ae Ce Hts, te, te Sh SOP dake te BS 4 . "is gttenred xe od gira shee ate es Ceesser? ite ,elivs: teed tot iy es Lfow as oF B MOTE Biv bas TeSys OSes Or a Reese > t ¢@ dyors . PN gee Te pie Pearse ti ur SSN pimofrar: Sie cane sd RRND ee tee atte mw gomases Lorwdyoo of ith ti ye SHE RBOD far Bi paseo Yui Serna ‘ xed? sor Par oe Bea wa E, ° w. ae - ee o | .Reoao ms thud dt Fasmvhsarivlrete, Lik «De a fungus disease of aphids to develop rapidly, particularly if it is muggy. Wasp parasites of aphids are just appearing in fields. No damage is visible yet, but upon the first indication of wilting, apply 1 pound of malathion, 1/4 pound of parathion or phosdrin, or 1/8 pound of demeton per acre. Allow one week between treatment and harvest when using malathion, 1 day with phosdrin, 15 days with parathion, and 21 days with demeton. Only one application of demeton can be made per cutting. Demeton, parathion,and phosdrin should be applied only by an applicator experienced in handling toxic organic phosphate. Greenbug: This pest is abundant in some of the states to the west and south of Illinois. Some winged greenbugs have been observed there. None have been found yet in Illinois, and whether there will be any is questionable. There are numbers of English grain aphids in grain fields at present, but they should not be confused with the true greenbug. Caution: Before applying insecticides, read labels carefully and follow all precautions. This not only will insure personal safety, but will also eliminate insecticide residue hazards. NOT FOR PUBLICATION - Special note to farm advisers and assistant farm advisers: 4-H members will soon begin making their summer project plans. Members enrolled in the entomology project can obtain a free packet of 50 insect pins by writing to Steve Moore, 280 Natural Resources Building, Urbana, Illinois. Be sure to obtain a supply of the new 4“H Entomology Record Book (BP-23), which also con- tains cut-out labels for collections. Copies of the Handbook of the Insect World, which will assist members with identification, are also available. We will welcome reports of insect abundance from county agricultural ex- tension personnel. Those wishing to have insect report blanks, please write to us and we will send them by return mail. KX KKK XK KK This weekly report was prepared by H. B. Petty, Illinois Agricultural Ex- tension Service and Illinois Natural History Survey, in cooperation with the USDA Agricultural Service, Plant Pest Control Branch, from information gathered by ento- mologists and cooperators who send in weekly reports from their own localities. HBP :bb 4/28/61 r Cie tot week c chs ta A Sfgos ; eh Bow Otaw ote, Pensa .ncrgvap ase , ae | aries MISE REE. pds TOP SOILLIGE 6 Peres bb Be eh Se to axed bsavtaos, aes p 7 TOES traoony Lis ; e Arye; > 2 tees Teh ee ra kas ee % Fs Te yon Het - rayeepybe — Pow ech ne SeaLiqeme < of auter | Hoine ar . ek et Balm Ce ww vi Gist FOI Some sey OT a FZ ODES ay ere s ene Te, Se ea ae A eee 8 Ae ig RE To ts5.5_ & S6ery a ee oe; RD Seseitiieest ce sty 8c Moe Aiea ants te ay 5 by ay OP ee EE Se ae Gone eS oo gt Wem? FL Earp tes mired eee ni het wad at Gy 2 ; i itt LESS Lee * SHANI I AtioHaAN rw FOR IMMEDIATE RELEASE May 5, 1961 INSECT SURVEY BULLETIN NO. 3 This is the third in a series of weekly bulletins on the general insect situation in Illinois (fruit insects excepted), prepared by entomologists of the Illinois Natural History Survey, University of Illinois College of Agriculture, and cooperating agencies. It is designed to forewarn people in Illinois of impending changes in insect activity and suggests abbreviated control measures. These ree ports indicate only general trends. Each individual should check his own fields to determine local conditions. Face flies: These pests are about as numerous this week as they were last week and will lay eggs for another generation of flies expected in late May or early June. Controlling them now will materially reduce numbers this summer. For dairy cattle, apply DDVP commercially prepared face fly bait daily to the animal's forehead for the next 2 to 3 weeks and then every 3 to 5 days as needed. For beef cattle, use 5 percent toxaphene in a backrubber. Homemade backrubbers work as well as the commercial ones. Run a taut line of 4 to 6 strands of barbed wire from a post about 5 feet above ground to a stake in the ground about 9 feet away, and wrap with gunny sacks. Saturate with the toxaphene solution. Place the backrubber where it is readily accessible and will be used. Do not treat cattle with toxaphene within 28 days of slaughter. Spittle bugs: The cool weather has retarded egg hatch. On fields war- ranting treatment, insecticides should be applied in the area south of Highway 6 the week of May 8 and north of Highway 6 late the same week and the following week. At least one or more spittle bug nymphs per stem should be present to warrant treatment. The nymphs are small and it takes careful examination of the stems and leaf sheaths to find then. To control spittle bugs, use 1/4 pound of lindane or 1 pound of methoxy- chlor per acre. Lindane does best when air temperatures are over 60 degrees. It will also control clover leaf weevil and aid in controlling pea aphids. Do not apply lindane within one month of harvest or pasture, or methoxychlor within one week. Pea aphids: These pests are numerous in alfalfa fields in the southern two-thirds of the state. No severe wilting from their feeding has been observed. Insect predators of aphids are not abundant, but wasp parasites are becoming more noticeable. With warmer temperatures a fungus disease of aphids will aid in con- trol. To control pea aphids, apply one pound of malathion, 1/4 pound of para- thion or phosdrin, or 1/8 pound of demeton. Allow one week between treatment and harvest when applying malathion, 1 day with phosdrin, 15 days with parathion, and 21 days with demeton. Only one application of demeton can be made per cutting. Demeton, parathion, and phosdrin should be applied only by operators experienced in handling organic phosphates. Elm leaf beetles: These insects may soon appear in southern [llinois. The small, dirty, yellow to black, spiny larvae will skeletonize elm leaves. They are particularly severe on Chinese elms. To control them, use 4 to 6 pounds of lead arsenate, 2 pounds of 50 percent wettable DDT powder or 2 quarts of 25 percent DDT emulsifiable concentrate per 100 gallons of water as a spray. TOL 2 SEAM STALOGMME § 7 = = = uy aon . ew) - Mg eee 7 > «CH SETS Paeage Lk wt H fecugsif Punegs Leos Tooamt wk @ reat sigoibak Seer > favs vin’ ie re : ore. Ahi EiOTSE fa Se, ¥oe PUSH, eareeapyeny © SOLER Raf Dube Too ef Pamaere © 5 FP ete A aig open pop” ey Pomel Sine iF Oo SATS Ge eyes Dit SG anc anh, ee any este? © oe Ft ag Ae PIS. SSeS ey cae Soot. oh tied ae iF) Pee SOLS OR Dé o LOEst poset oc EVs ‘aky 20 gotds Jeerred ayn epee ly ayad «S Give edie = him ewes te feed ac; ions F ae a : be, Hi a Y rey PLE gett ee na “ +3 = titel SiSe Bis aoe Corn borer: Borer development is slow this year. Pupation of overwinter- ing borers and moth emergence could be later than usual. Thus borer survival in early-planted fields could be quite high. However, with an anticipated large acre- age of early-planted corn, first-generation populations may be diluted,and only a few fields may have high concentrations. But with good survival and favorable weather,second generation could be a problem. Caution: Before applying insecticides, read labels carefully and follow all precautions. This not only will insure personal safety, but also will elimi- nate insecticide residue hazards, Special note to Farm Advisers: Please send us, as in previous years, your estimates of the percent of the corn crop that was planted on May 2, 9, 16; 23, and 30. This information will help us anticipate abundance of various corn in- sect pests. HK HKRK KKK EK This weekly report was prepared by H. B. Petty, Illinois Agricultural Ex- tension Service and Illinois Natural History Survey, in cooperation with the USDA Agricultural Service, Plant Pest Control Branch, from information gathered by ento- mologists and cooperators who send in weekly reports from their own localities. HBP:bb 5/5/61 eustolweave to gobtaat 4 aise wole et ak Isviveie seved andi «fsweu mike tod agtos utiel Botentotie; me ddtyw gsverot & Yau Boe betulss of qos snobteicvog ao ofdenovel Sas Leviveve Boog Aciw dt woilo? Bas yitstiaces afedsl O2.2 , 2386 «inthis Iiiw «is duu .wWeotsa Iegoars: Came e w aS pe ae “3 baeee At LVéBSt SOLVENT oF as . Bu aasa oes ¥ 7 ‘ > & .artotte AL to wich eoug 10 doh tafe notvloga: ucdw tee ite cine cbhine no is nokdvasay .noveaead fe iaesro yi tfhoug re é fate yuo SL 2 ata t bes Cetera wade ton eho Sto te Cisse] = irorodten te Bayog L ore i. -enemge 00 tevo™ i a8 dHsuge. Lave LS200 m200 oo : St ae a a aft BYSO ese Leisowoa aivexg 2 “inh Soe anut otet PL OS eos & Save Pie Ieee » RENTON ROR. se iss eee ¢ lune on? Y8t of - vetoa hes : a Cn ined teed Mp! addwougs atrial, -De type of growth that armyworm moths lay eggs. Examine all lodged spots carefully. If an infestation develops, control will probably not be needed for two weeks or more. Toxaphene, 1 1/2 pounds, or dieldrin, 1/4 pound per acre, is recommended for small grains. Allow 7 days between treatment with dieldrin and harvest of grains and 7 days fortoxaphene, except for barley, which requires a 14-day waiting period. For beef pastures, use toxaphene; allow a 42-day period between last grazing on treated pastures and slaughter. For dairy pastures, use 2 pounds of methoxychlor per acre, but do not graze for one week after treatment. Greenbug: Be on the watch for small yellow or dead spots in small grain fields in which the dying grain is covered with aphids, as greenbugs may appear this year. Spring cankerworm: These measuring or inch worms begin to feed on elm leaves just before or as they are emerging from the bud in the early spring. Con- trol when the worms are small will be beneficial. Apply a spray of 4 pounds of lead arsenate, 2 pounds of 50 percent wettable DDT, or 1 quart of 25 percent emul- sifiable DDT per 100 gallons of water as the leaf buds are opening or shortly there- after. Caution: Before applying insecticides, read labels carefully and follow all precautions. This not only will insure personal safety, but also will elimi- nate insecticide residue hazards. Special Note to Farm Advisers: It is difficult to distinguish the English grain aphid from the greenbug. A hand lens is needed to observe this difference. Cornicles are tubes or protuberances on the back of an aphid. The cornicles and legs on the English grain aphid are slender and long; and on a greenbug, short and stubby. If you are not already doing so, please sendus your estimate of the percent of the corn crop that was planted on May 2, 9, 16, 23, and 30. This in- formation will help us anticipate abundance of various corn insect pests. HX KKKK KK KK This weekly report was prepared by H. B. Petty, Illinois Agricultural Ex- tension Service and Illinois Natural History Survey, in cooperation with the USDA Agricultural Service, Plant Pest Control Branch, from information gathered by ento- mologists and cooperators who send in weekly reports from their own localities. 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Louth ivobuga: Ss evebnofor — ay 7 FOR IMMEDIATE RELEASE May 19, 1961 INSECT SURVEY BULLETIN NO. 5 This weekly bulletin on the general insect sitvation in Illinois (fruit insects excepted) is prepared by entomologists of the Illinois Natural History Sur- vey, University of Illinois College of Agriculture, and cooperating agencies. It is designed to forewarn people in Illinois of impending changes in insect activity and suggest abbreviated control measures, These reports indicate only general trends. Each individual should check his own fields to determine local conditions. Armyworms were found in barley fields in the south third of Illinois this week, It was still too early to diagnose the situation, as the worms were so small, some just newly hatched, that accurate counts could not be made. Also, moth flight was greater this week than at similar times during the past 3 years. This may mean that eggs are still being deposited. Furthermore, armyworms thrive best in cool, damp weather. On the basis of previous experience, timothy and other grassy fields will probably be the first areas where armyworms will be noticed. Next will be barley and rye fields, and then wheat. During the next few weeks, observe fields of luxuriant grass and small grain crops. Down spots in grains are the first place to examine. If worms are numerous, examine other areas in the field. If there are six or more per linear feet of drill row, treatment will be profitable. However, it will not be needed until the worms are about 1/2 inch long, as they do little damage until about half grown. Toxaphene, 1 1/2 pounds, or dieldrin, 1/4 pound per acre, is recommended for small grains. Allow 7 days between treatment with dieldrin and harvest, and 7 days for toxaphene; barley, however, requires 14 days. For beef pastures, use toxaphene; allow 42 days between last grazing on treated pastures and slaughter. For dairy pastures, use 2 pounds of methoxychlor, or 1 pound of malathion per acre, but do not graze for one week after treatment. Black cutworms: Although we have no information on moth abundance, con- ditions are ideal. The moths lay the eggs in wet spots in fields and in bottom land or overflow areas. They have plenty of areas to choose from this year. Aldrin or heptachlor, 1 1/2 pounds per acre, broadcast and disked in before planting, will protect against cutworm attack. Row treatments have given erratic results. When no preventive measures have been used and worms are cutting corn below the heart of the plant, apply 1/2 pound of dieldrin, 3 pounds of toxa- phene or 1/4 pound of endrin per acre, and direct the spray at the base of the plant. Sawfly larvae feed on wheat leaves. Ordinarily they are of no economic importance, and contiol measures are rarely recommended. They are easily confused with true armyworms, however. A sawfly has at least six pairs of abdominal prolegs compared with four pairs for the armyworn. Corn borer: Half of the overwintering corn borers have pupated in southern Illinois, but pupation has just started in central Illinois. This is about one week later than normal. The area north of a line from St.*Louis‘to 497C4 iD | Ui ERSHEY Gh Lily @ .O% TETEWva yavaue TosouT w aidt sg.2 tosent Ietemes sid ac eiteliud yliloesy . bee ista a sane sit to atarcsolomotae yd oegesg ye } “pA to sgsifod atentlit 2% peor % sifil oi slaoog atswsxct of demas SILOTSt owen -xeruvesen Loutnos bad. siysidds te i xoeto bfuoda Leubivibat coal i Stev seroma a Sade ot a vibe aw vt toon 95 { “ ry 6 ‘3 BD = B p oO ei |] ra + 5 é o fm te bor Cc 1 oe ae rhrio: ay a : wt c puotiauste ae van Bbfuoo Bg scl aniaus ¢ tefinta ga oedd 2 Jeow etch 93895, OWUYMSS . “Hskpeodes sateen Cfite ae 4g 99R5 249 ; f /yavowmms exsdw sesys gevit add od yldede atest aedt Bip .edbfalt ove be ibid So hie Beata J celsunt 3 J 4 BGOoro stony ‘ SL ro gerlinexe ¢ AROS SORR 2 ol ,Wor LLixh to deat - . Sie @amow oly Liga weds as , susdigexol . 2uist3 Lise 10% remodgexcd tot eyed Go wolls a. ,SuSh Leg moicrsist ) Bragias SO ,toinoymonten te: abmuocn 2 ose | he ; ear treet — “Sew sao TOL ersig 3 'said change, girs FOND TONS ee isebr ots ano bhp esets Wolixsvo YO Boel ” - et a - i, 1 Ir ae SE 8D ea ) es aut =O ahenta i 23 Ls aS 1 Sr os a i BC flap Sey Po re : #3 ‘ is fiw tc ee sxotsd 7 STR = : oie) sy bibs : aW ,sthinesit ottstte raat & od wofed nos ef xo sredg errs ¢ 3 * ' eee oll » Bere ore iw fo. STL ene" ni mate HSTACUuAS ere oa sty = ine ay of 9 Pee es re », oe “> Pek aan A ‘“ rf a, Ais OVER 2°55) Paty MiLE LENG LaVvG nae a tiegh garpend srroG ry ra eae a ee btawue dud atoaiill mrenauos rstnl doaw ana sods faedl feria os & enrels nae daa! «Qs Watseka had the highest overwintering population. South of this line populations were low. Pea aphids are heavily infesting occasional clover and alfalfa fields, particularly in northern Illinois, and damage is occurring in some fields. With present moisture and an increase in temperature, parasites, predators and aphid diseases may help to reduce the population. If control is needed, apply one pound of malathion, 1/4 pound of para- thion or phosdrin or 1/8 pound of demeton. Allow one week between treatment and harvest when applying malathion, 1 day with phosdrin, 15 days with parathion and 21 days with demeton. Only one application of demeton can be made per cutting. Demeton, parathion and phosdrin should be applied only by operators experienced in handling organic phosphates. Be sure to clean the weed spray out of the sprayer before using on alfalfa and clover. Spittle bug control is still in order if fields average one or more nymphs per stem and the plants are not over 10 inches tall. To control, use 1/4 pound of lindane or 1 pound of methoxychlor per acre. Lindane does best when air temperatures are over 60 degrees. It will also control clover leaf weevil and aid in controlling pea aphids. Do not apply lindane within one month of harvest or pasture, or methoxychlor within one week. Face flies are still more numerous than they were last year. Eggs are being laid, and the new generation will begin to appear within the next few weeks. The population will continue to increase throughout the summer. Start control meas- ures now. For dairy cattle, apply DDVP commercially prepared face fly bait daily to the animal's forehead for the next 2 or 3 weeks and then every 3 to 5 days as needed. For beef cattle, use 5 percent toxaphene in a backrubber. Homemade back- rubbers work as well as the commercial ones. Run a taut line of } to 6 strands of barbed wire from a post about 5 feet above ground to a stake in the ground about 9 feet away, and wrap with gunny sacks. Saturate with the toxaphene solution. Place the backrubber where it is readily accessible and will be used. Do not treat cattle with toxaphene within 28 days of slaughter. Caution: Before applying insecticides, read labels carefully and follow all precautions. This not only will insure personal safety, but will also eliminate insecticide residue hazards. THERESE This weekly report was prepared by H. B. Petty, Illinois Agricultural Extension Service and Illinois Natural History Survey, in cooperation with the USDA Agricultural Service, Plant Pest Control Branch, from information gathered by en- tomologists and cooperators who send in weekly reports from their own localities. HBP: bm 5/19/61 ty anoivelugor antl te sduoS .soldals garry ecutteyo Prodgad okey fueseh i Die covets clea e790 goidagta: viivess MOOR O) Eu breese wf sgemeh igs ee HI idk BIOTEROCEY 4 Bot cogreser _wiintestogmes 615 enegront | okdotsnpse, |dt a SOS cee ee Qype ee oe \ “SUBZ OC OMOG 4 : Sewer gao wit ae _veabosu ot Ae: Goo ar JA .wotemab te bavog Bt rong dite yah f tO — en be Aeaetod 2 IQS SG i atiw ayes “ isnanese me Q “ ake ~ ro Ot Od steve Sef a ce avolio Baa AG 200 S3Aa1> “tabyo oi Jive al a YSVO Gos oes sorely sq soltoyxodten 2o Goan oar F ala t fw $2 Sobl whos PSS wW mg So ee af eeorrnioo of iw tolis ae POM £0 - = aoet ae tel tate een Rivet wbtal aC. aoktsLuged Wot ft oa cows eistso ft Der tof ae £few ee Ruaw ete aos pts axiw Beat rte 4% — ne = a SHEL NG ELIA ALGe ee Nau: Sh ne BOE BASSE i Leer! io laced he ot fou: et). froth she igi rat s am Sa a OO BIOS TOqOOS Cis FOR IMMEDIATE RELEASE May 26, 1961 INSECT SURVEY BULLETIN NO. 6 This weekly bulletin on the general insect situation in Illinois (fruit insects excepted) is prepared by entomologists of the Illinois Natural History Survey, University of Illinois College of Agriculture, and cooperating agencies. It is designed to forewarn people in Illinois of impending changes in insect ace tivity and suggest abbreviated control measures. These reports indicate only gen- eral trends. Each individual should check his own fields to determine local con- ditions. Pea aphid populations mushroomed during the past two weeks. In some fields of alfalfa and clover in central and north-central Illinois, damage has been severe. In some areas the population is decreasing rapidly because of a fungus disease of aphids. Aphids killed by this disease are brown and have a flattened appearance. Aphid predators, such as lady beetles (both adult and larvae) and dam- sel bugs, are becoming prevalent and are now further helping to reduce aphid num- bers. To spread rapidly, the fungus disease must have some moisture and warm ten~= peratures. Spraying is questionable when brown aphids are numerous and lady beetles are becoming plentiful. In areas where it has been dry and cool, the fungus is not common and a severe aphid problem still exists, Examine this year's seedings in small grains, as aphids are migrating to these small plants. It may be necessary to spray these new seedings with malathion. Again the fungus disease and predators may help. With hay harvest approaching, apply one pound of malathion or 1/4 pound of phosdrin. Allow one week between treatment and harvest when applying malathion, and one day with phosdrin. Be sure to clean the weed spray out of the sprayer be- fore using on alfalfa and clover, Phosdrin should ve applied only by operators experienced in handling organic phosphates. In heavy growths of alfalfa, spray penetration is poor and control is not perfect. If the alfalfa is close to harvest, cut and then spray second growth if the aphids transfer to it. Corn borer pupation is approximately 25 percent in the central and north- central sections and lO to 15 percent in the northern section. Development of corn borer compared with corn growth is similar to 1956, but the overwintering population is not so great this year as in 1956. The armyworm situation is not yet serious, but in the southern third of Illinois armyworms have been found in grass and grain fields. No large concentra- tions have been located, but they may be present and overlooked. Examine rank growths of grasses and grains. Toxaphene, 1 1/2 pound, or dieldrin, 1/4 pound per acre, is recommended for small grains. Allow 7 days between treatment with dieldrin and harvest, and 7 days for toxaphene on wheat but 14 days on barley. For beef pastures, use toxa- phene; allow 42 days between last grazing on treated pastures and slaughter. For dairy pastures, use 2 pounds of methoxychlor or 1 pound of malathion per acre, but do not graze for one week after treatment. AQATIGA GTATAEMNT 20% a ry OV pia 4 ait ET TTT xX ways TUE ‘A UAT i svenmsg sod aq ad eae wlasoy Poe Al prerere meetin yd Soumiova sk (Ledqeoxa a efoniifl ko dioeer bay gin ow EYstagoo. D258 asgerada saiboogel te afoniily aL efqoag eiawatot alk ay Lowdryoo Dadetvendds & sano Biuode Levbevitet do sf 4 a Seay sos} tugog Alden getl Lee negate Sue ht or o STS rang an imoged < et Lega P seed } seats StLEMOS ood adel eaves © Bra Xomon easueig ffane o saeiy gimetre olf riba fe Fe HOS area] Fei Smee oft i tO athw yb 3 Poo Nein aA Se sanio ak elfetts edt To .tostreg | wf of veteneud shtdges end” s , & Mor ms ¥ rat “~ ee oe a » sivuos anit of fud .suninaa 4s ned a Sak ol 4 fend ites svee B20 .td oe Ree hus geee2erR ‘to anttivoxrys ~ wee el iD a us § =e eee ta ot ree YEW sok Le) a syab at been ma HOV Loses 4 olde Sawfly larvae feed on wheat leaves. Ordinarily they are of no economic importance, and control measures are rarely recommended. A sawfly has at least six pairs of abdominal prolegs compared with four pairs for the armyworm, Sawflies are easily confused with true armyworms. In making armyworm counts, do not include sawfly larvae. Face flies are still numerous on cattle in the northern one half of the state, In addition, populations warranting treatment were observed this week as far south as St. Louis. For dairy cattle, apply DDVP commercially prepared face fly pait daily to the animal's forehead for the next 2 to 3 weeks and then every 3 to 5 days as needed. For beef cattle, use 5 percent toxaphene in a backrubber. Homemade backrubbers work as well as commercial ones. Run a taut line of 4 to 6 strands of barbed wire from @ post about 5 feet above ground to a stake in the ground about 9 feet away, and wrap with gunny sacks. Saturate with the toxaphene solution, Place the backrubber where it is readily accessible and will be used. Do not treat cattle with toxaphene within 25 days of slaughter. Caution; Before applying insecticides, read labels carefully and follow all precautions. This not only will insure personal safety, but will also elimi- nate insecticide residue hazards. FOIE This weekly report was prepared by H. B. Petty, Illinois Agricultural Ex- tension Service and Illinois Natural History Survey, in cooperation with the USDA Agricultural Service, Plant Pest Control Branch, from information gathered by en- tomologists and cooperators who send in weekly reports from their own localities. HBP :b1 5/26/61 it ytexond aevest teolw ao Seek ee Xitwse SxS eScteeee Lowhies bas ie Sonsiroge ia berequoo apslouqg Lecimobds to : samo suit adi b autos ,oavrai to Bfed eno aaa non aNd at efidtso ao svotemun {live axa selit 208% as Moov ald’ bevisedo orovr dxombssuy a Jdafuany (ROLFEBDS at ieee: aktet s2 es ddioe 18% vesgera Yilatoweaiis Yiows ,eiddso vrish tot yieve ciedd Bos ofeew € of S dxsc edt vot hos matel 4 ee ont raddemlosd e oltisa toed 107 | ¢# % fae 6 -aato- Leisy so as ftew es ; avods set ¢@ dyads gave ‘oe graressod oi they otasudsd tae Rat dgiw “O0 6.heen od 3 is gidius 5 seaste wt ae a a ay eer toy fi aca a) a8, *, a) MF & Ba Be 1a wD eg SEFOSAEL aitlyiqgs iota ;aokdysd 189 7 & mo ded itt ,saofivsosrg 4 shtaigosent ervey & ots SQL we OORT Ss wedded et oe ere a nig Ss de oe] Ta lew any Sk VIHOS gy ich | i bos esivesa aolanst ash die Magee. fae Ce ae Cre eee ae Nee On Ou SIS YOO3 AGS “ r i Sole FOR IMMEDIATE RELEASE June 2, 1961 INSECT SURVEY BULLETIN NO. 7 This weekly bulletin on the general insect situation in Illinois (fruit insects excepted) is prepared by entomologists of the Illinois Natural History Survey, University of Illinois College of Agriculture and cooperating agencies, It is de- signed to forewarn people in Illinois of impending changes in insect activity and to suggest abbreviated control measures, ‘These reports indicate only general trends. Each individual should check his own fields to determine local conditions. The armyworm situation has changed this week, Several fields of wheat with damaging numbers of worms have been reported. However, the worms were still small and just reaching the damaging stage. These reports came primarily from western and southwestern Illinois, but other areas may be affected. It will be well to examine rank growths of grasses and grain for the next few weeks, If there is an average of about six worms (1/2 inch or longer) per linear foot of drill row, treatment may be profitable. Toxaphene, 1 1/2 pounds,or dieldrin, 1/4 pound per acre, is recommended for small grains, Allow 7 days between treatment with dieldrin and harvest, and 7 days for toxaphene on wheat but 14 days on barley. For beef pastures, use toxa- phene; allow 42 days between last grazing on treated pastures and slaughter, particu- larly if toxaphene is being used on the animals to control flies, For dairy pastures, use 2 pounds of methoxychlor or 1 pound of malathion per acre, but do not graze for one week after treatment, Flea beetles have affected corn stands in occasional fields in central, western and southwestern Illinois, They strip the green from the leaf surface, leaving only the white tissue. When the beetles are extremely abundant, the damage may be so severe that the leaf, and in some cases the entire plant, dies, If these beetles are stripping the leaves to the point of killing plants, then treatment is recommended, Use 1/4 pound of deldrin or 1 1/2 pounds of DDT per acre as a band spray over the row. Sod _webworms are killing or seriously damaging some fields of corn, partic- ularly corn after grass sods, They feed below the soil surface, eating on the stalk. Since webworms are concealed in a web to which dirt clings, they are difficult to find, The leaves, upon emerging, are full of holes and often are half eaten, This damage was done when the leaf was in the roll in the stalk, DDT as recommended for flea beetles will aid in control, but two nozzles per row should be used, Point them toward the plant, Billbugs are snout beetles that drill holes in stalks below ground level. When the leaves emerge, they have a series of holes in them, Occasionally this attack may kill plants. These beetles are being reported primarily from the northern one-third of the state, but may occur in other areas later. Apply DDT as for sod webworms. Wireworms have taken some fields of early corn. If the field is to be re- planted, apply 2 or 3 pounds of aldrin or heptachlor per acre, and disk in immedi- ately. The higher rate may be necessary to kill the large wireworms in the short THE Th interval between treatment and replanting. THE LIBRARY OF THE ghuvt) ebeaitll mk mokdsutia laaaiad isveneag odd ao es ciiiess tate wernt ytotall fsussl ehostiif esd 29 atelyolonmodae yd bararen¢ at { bodrsoxe | “90 sr ST ,2efoneyes giattersqoce ons exvudisotrad to egelied stosil l(t ‘to ot gue wikvices tosadi ai asgaedo aatbascme = afonifil mk slqesg ataweret seuxyeva Larson yiao ale apeaee Bicoget aad? lsoutuasem Lortstoo Beta werickeibaoo faeok oe niate2e& of abfekt ove ats doano Aiwone 5 rok deer os eoiakt Lavsrec me eit) bygesdo aac coksausie mt E ffisna fice stew sattew edt revewoli Rattoqger ased eves ee es hee misseev mos wikcentts ser ao “adto gor osedT gece gatpsmsh add gate: amimaxo od flor ud Eibe $i, iotootis (od yar some tedgo dud .Bhomr L(t tc anavavs gs af stedt ¥ estes? Wwe. Powel gests Bas aseeakwy to eck ec Yad toomesis ~wor [ : fysmrrol yo dock ak ; ie a heasyres Peni bet , ees 384 Heggresc ays eeabiath im Sovteueé g eb ie evoiteieseeds vend Stee nw GLB io Lh ioiw doomteesd vomited ayes T welll. eotesy Lene “Skat 98s naterte as hese sch .yelted ao eyed Jl gud gear mo oe ata sot 5 ~wngPase ~rasiecesis has hetseyd so gaksery dasl noswisd pare’ Si wolls . oo Od alantas edy ao Bear arted el saedigaxod SEY Taokndafem to Goes £ ac ged: xodde “to epaog | ; arssit wedte dgew ao Perces:-| slividizes. sf 2 SATs Ts oat (eer a i HGS ee A "229d Seensh anid, dauet ater: Gf esih .taede ot Bi UPAR BS IE Mes . acme POSS ON, : oa saeanhs poo oft che amon EE pon , 3894 Sit dad! ateras oe Sutoy add vf e@svecl ode gatgetate sia” Eve ahvBleh ‘to bauer BYE self 9 F - wen ort se ~ ~“OISIST ,wEoe WO sbiel? smoe yriyenes ylauoteee vo gor. itt eta amiowiew bos ,45 e's sro go ASEyRS Sots TESS woled best vedT ,aboa sams: wadha mroo yi ed 3 oct Jotity oa dev ge ak batasecen ete saviowdew 4 suet io Loe aie ; oovesa ene « tfon adr oi 2. cere oa i 1s bofinermcnes aa IGT Pa - Fes S = eer } as a ry atke re [ . o af? Bueded cate diol fees co biuodes wor seq Hiogd TUSAN stb sagd tit Pa: IFS VOR . oA son gevaeo! sds sed ssf cued? ,addede Ifte ya dostis s yam ded .sdade 4rd to ae «RTO a “G stebi aad UT site. oe Bs oul shied Genar ewer gersowse by? fy eh dash Bie 40 NELSTS oO gn Euo S yleus Sodnalq ovis st Sarcires ci ait ; tl rt ont whaegnason od ving etiy tedatl ott .yiads WQntoaelges bos deemtser? asswisa DLerroatat fis If the present stand is adequate, it would be wise to spray with 1 1/2 to 2 pounds of aldrin or heptachlor directed at the base of the plant. Wireworm feeding may continue for 2 or 3 weeks, Follow this application immediately with cultivation, throwing as much dirt as possible up around the plants. Black cutworms are now appearing in some areas of central and western I1li- nois, but may appear in other areas during the next two weeks, Ifthe stand can still be saved, apply 1/2 pound of dieldrinor 3 poundsof toxaphene, directed at the base of the plant, and follow with immediate cultivation. Examine stands of corn in low areas in the fields for this pest. Treatment after the worst damage has been done is not economical. The larger the worms, the more difficult they are to kill, so early treatment pays off. In flooded areas, broadcast 1 1/2 pounds of aldrin or heptachlor per acre, and disk in before planting to safeguard against later attack, Corn borer emergence has just begun in southern Illinois. Pupation is ap- proximately 50 percent complete in central Illinois and 10 to 25 percent in northern Illinois, Corn borer development is about a week later than last year and about the same as in 1956, when first-generation borer survival was very high. Greenbugs have been collected in Illinois on small grains, but the popula- tion is extremely low, Report to your county farm adviser any dead or dying spots in small grain fields in which plants are heavily infested with aphids. Pea aphids are still serious in some alfalfa and red clover fields in northern Illinois, It is too close to harvest to use insecticides except for 1 pound of malathion, which requires one week between treatment and harvest or pasture. The best suggestion is to cut the hay crop now, salvage what can be used and then spray the new growth if the aphids continue, Lindane, 0.3 pound per acre, can be used at that time as well as malathion, Allow one month to elapse between treatment with lindane and harvest. Bagworms, if not already hatching, soon will hatch in southern and central Illinois, After hatch is complete, apply a spray made with 2 teaspoons of 57 percent malathion concentrate, 3 teaspoons of 60 percent toxaphene concentrate or 1 tablespoon of lead arsenate per gallon of water, A second application two weeks later may be needed, Do not apply malathion to Cannart red cedar, as injury may occur. Caution: Before applying insecticides, read labels carefully and follow all precautions, This not only will insure personal safety, but will also eliminate insecticide residue hazards. HIE This weekly report was prepared by H. B. Petty, Illinois Agricultural Ex- tension Service and Illinois Natural History Survey, in cooperation with the USDA Agricultural Service, Plant Pest Control Branch, from information gathered by ento- mologists and cooperators who send in weekly reports from their own localities, HBP:b1 6-2-61 od osuw od Eine Fr ao supeSe af sued ant ge Aotoexkth ic! aokssollges eist woliot oNy BUOTR qu 3 drssahe add IF sessed p>) ee Is to aberogy: o: pioaw £ xo S tot sunt da9 | Seay Be GUE fiour os yuthsst arco . etelssvidttiy apy ZC tS gtrxe aoe W28LA saNGse ows vedio of issqqs yam dud iba a LO Breyog ‘s\. i yloqs bevea od As -otfot Sie cinalg. edt To- ‘ xok abisit adv ak esets 5, ay oa ries SHS BAT MOE: dav i Ui Serts wey wae i aed out -feolwonoas A ,Tto ~~ S a ease veg al ope yanne ee z T3237 BL ot enkees we SUR3 +? B or oa 8 tex oe be 3 B ft 2 Ba fh ex, SanSsgusie kerod. revod \ seaigeos tneotted OC iS -CLodemik xoug anlevob tarod arkad atom lst — sad S802 ¢k aes sires CM otra ae aconbes foad svat anuunaey) - od bacged i wwol % efonest So¥e Ob. Gene nofrig ak ablett alerg {Lene re Sz1 tevolo fftse sve nD Tags so ni PHU RS wae oe rreddron datdw TS, fofAssS sit ‘Yo et nokd de 2eQave suet ob nectey rie (ac ara DARSHLS GOTS OBE s AS Mg - es fe eke a9 Pe tee ¢: sexe ae goreon » abisins a ‘ 2 \6 frees Rent i BYR SS i ; . ee ; fey afi sh ceed at 94 hiservag Yo to arr aa Adiw qOTAG s par ro & wh aee ey Pas wer ter! Bae ieee + SET reqbdused ,auokuvsossa ££8 Bhast oftoktooagt LES va MENS ye ay") j pL SeY nolagdsd Lats tare barge goo Bes ataigofom | os nyepee Cte IE eo byes oe aw oe wcohigency th 5 ; gBUiS Leek we FOR IMMEDIATE RELEASE June 9, 1961 INSECT SURVEY BULLETIN No. 8 This weekly bulletin on the general insect situation in Illinois (fruit insects excepted) is prepared by entomologists of the Illinois Natural History Sur- vey, University of Illinois College Agriculture and cooperating agencies. It is designed to forewarn people in Illinois of impending changes in insect activity and to suggest abbreviated control measures. These reports indicate only general trends. Each individual should check his own fields to determine local conditions. Ayvmyworms are approaching the damaging stage. They can be found in low to moderate numbers over a large area of the state, with the highest concentrations in western and southwestern Illinois. Some fields of grains in southern Illinois have already been treated. For the next two weeks, examine luxuriant growths of small grains and grasses. First examine down spots and then, if large numbers of worms are present, examine the remainder of the field. If there are six or more worms per linear foot of drill row or 10 to 12 per square foot in grasses, treatment is advisable. Toxaphene, 1 1/2 pounds, or dieldrin, 1/4 pound per acre, is recommended for small grains. Allow 7 days between treatment with dieldrin and harvest, and 7 days for toxaphene on wheat, but 14 days on barley. For beef pastures, use toxa- phene; allow 42 days between last grazing on treated pastures and slaughter, par- ticularly if toxaphene is being used on the animals to control flies. For dairy pastures, use 2 pounds of methoxychlor or 1 pound of malathion per acre, but do not graze for one week after treatment. Black cutworms are appearing in corn, fields in spotted areas in central and western Illinois and may appear in other areas soon. If the stands can still be saved, apply 1/2 pound of dieldrin or 3 pounds of toxaphene, directed at the base of the plant, and follow with immediate cultivation. The larger the worms, the more difficult they are to kill, sc early treatment pays off. If replanting is necessary, broadcast at least 2 pounds of aldrin or heptachlor or 1 pound of dieldrin per acre, and disk in before planting to safeguard against continued at- tack. Flea beetles continue to feed on corn in the southern half of the state. They strip the green from the leaf surface, leaving only the white tissue. When the beetles are extremely abundant, the damage may be so severe that the leaf, and in some cases the entire plant, dies. If these beetles are stripping the leaves to the point of killing plants, then treatment is recommended. However, the greatest part of the damage should be over within a week. If control is necessary, use 1/4 pound of dieldrin or 1 1/2 pounds of DDT per acre as a band spray over the row. Chinch bug damage, appearing as dead spots, may occur in thin, open stands of emall grains within the next few weeks in central and eastern Illinois. Examine these spots for adults and nymphs. If bugs are extremely numerous throughout the field, apply 1/2 pound of dieldrin, but not within 7 days of harvest. Corn borer emergence ranges from 10 to 20 percent as far north as Gales- burg and up to 5 percent in northern Illinois. Corn growth and borer development parallel those of the 1956 season. That year insecticide applications to field corn began about June 25 in the central section of Illinois and continued to about KORE «Q aeth RQMAIGE STATOSMMT c we * ~ > ,OH WEMLIUE YAVAUE Tower Tote eeusic Tooant Isvatoy add wo mttveLind yioeaw abdt vegnT Sit Lo adatnolonodas yd bovagerg at (esyoote } santurion tsxsaocs 3 studivercnd sna ti afookile % C obketevial ritog dona: aipao gatbriectk ‘to egos mt ian ot of 5 exaney isc stgotiak adiagsx oes: »souvason Lowtics hodstvertdda Ft * fsoot srtorieteb o¢ eplelt awo eakd doeds Pineda Leubs ae Peirigue sede gatgsmeb ant gaidesosage ove suncowyirrl -_ ait Miw ,deda at to ests opiel s ‘deve exodmaynt “Btonebol ¢ Ont aniere to af oM@o8 .ehorki itl ovedeewtiuer bas ottetaew sb hsteand coed Lita shal aihlis odosw owd dxen ode xo ove owob antiiexe desll .aeeapte | tob% edt to ushotemoy edt sakimers - S aH “or 3L of CL zo wot Litvib So: Pe, ae avedian says Bk - ao a & er os, ioe "OO Sin Sus ovaries D (A aflkeoieio te ,ebarvog Syl f .sasdqsxo? i a ddiy tusadsest avowed ayah P woliA eatery Lema not EN 46S't = arb iy mo suadgqexod tot eyeb T ae zs ees ASrsortd i. sesvded ayab ot wolds yonmedq aks aretgast: ft Eee vite Lroks to ebayoq § say ,pstmbgeg - isa ao sok 988tE é is Le ala aor nee IO ee ETT meteor Bas ES ib o Satyo rg 3 ue yee ,baVss ad S f oily ‘to seed inf cris SETS os a2 LT AY fHamiaoty ae anand ‘at BI08 Tw abrbleke owt. Bye ag ee Brace Aen Sh oat “abate you? | heute vlasoitis sue asltood edt taste ougdde ant g90ns gatoa mk his Shey wats af eae, Aba ae eA ant Ly eears Pea t * v PES 1 4 Sins ! Foboy adt 4 ap Pe fe i eae a ypiteh fur tO “dtag ; ‘ van , ea ¢ ’ 3 7 Pi Wa as lens ee , if ou pocaten sas zh Pha : a. cu x PISaGuven al LOTTO Th - # si55 Taq | nye Te bose FAIS. EO re soeny | ost a bas gind %O egon? felferaq % tuoda caged ayog De July 10 in northern Illinois. This year, however, the overwintering borer popula- tion is lower than it was in 1956. Observe the more advanced fields for the next three or four weeks. Bean leaf beetle is attacking soybeans, in some instances, just as they are emerging from the ground. If stands are being noticeably reduced from beetles killing the plants, apply 1 1/2 pounds of DDT, 1/4 pound of dieldrin or 1 1/2 pounds of toxaphene per acre. Pea aphids continue to be present throughout the northern twoethirds of the state, but by far the highest concentrations are inthe northernthird. Many of the aphids are developing wings and migrating to other crops. Parasites, predators and aphid diseases are abundant in some fields and scarce in others but over all are helping to check aphid populations throughout the state. It is too close to harvest to use insecticides except for 1 pound of mala- thion, which requires one week between treatment and harvest or pasture. The best suggestion is to cut the hay crop now, salvage what can be used and then spray the new growth if the aphids continue. Lindane, 0.3 pound per acre, can be used at that time, as well as malathion. Allow one month to elapse between treatment with lindane and harvest. Watch new seedings closely,as aphids are migrating into them and can quickly kill these tender plants. Malathion can be used for new seedings within one week of grain harvest. Lindane should not be applied after grain heads start to form. Potato leafhoppers migrated into Illinois this past week, concentrating in an area north of a line from Quincy to Lawrenceville. Although the infestations are spotted throughout this area, the highest populations are in central Illinois. Leafhoppers are the tiny, light-green, wedge-shaped insects that attack second- growth alfalfa; the alfalfa turns yellow, is stunted, and hay quality is seriously affected, Damage from this pest may be greater than it has been over the past few years. Examine second growth carefully and if these leafhoppers are numerous, apply 1 pound of methoxychlor per acre. It is too late to treat after damage be- comes evident, as the plants will not recover from the feeding of these leafhoppers. Face flies are present in economic numbers in the area north of a line from St. Louis to Paris. Apply control measures now. Caution: Before applying insecticides, read labels carefully and follow all precautions. This not only will insure personal safety, but will also elimi- nate insecticide residue hazards. KREIS This weekly report was prepared by H. B. Petty, Illinois Agricultural Ex- tension Service and Illinois Natural History Survey, in cooperation with the USDA Agricultural Service, Plant Pest Control Branch, from information gathered by ento- mologists and cooperators who send in weekly reports from their own localities. HBP: bb 6/9/61 . : ” ‘ ~S= Ae rod sulvedstwiove aur Filipe wweoy ald? gtonkfet frandtvon of oMes sd x0} Shioks bsoravbe sven ont aygendo eer. it asw Fi cold cawo, sGAoaw aot = SS Fang ‘ mort hocubesy yidsooksan if Go fivbleaib to hayeg + arith to bneaiainid F to vsey 0a] ot Balog prany ess Iisa xe cadeved edd Fac stich anyon ad ot spyotcaco abies Ae kel oxec*iog eft al ste enoldsetsascioo saseln ta ont ae va. ative of yaidexpte Bos asatw goto, t903 Soe abla kt ewoe at dnabevds sya: ,satare oft twodguorst anoitselscag ae oy Pan te r ren ws ioe +. woy L Lok daqsoxe saht oIliasg to oitvornt sou ot dnavued ot egoio cot at tT J Sts fremdecxd coords feew sao aothupe: dokdw ott neo dary egevise wor gore 2 Yad srt tye od BE 310. we Beyog 2.0 .,edebott .suetdries abidgs odd Th secre ie cud hrc ano woLtA okioa Lem ER Liew Bik) staevisd Dos Dione iiodisel © OGeFOFd- 8. ae 5 to iron soe se ; oi ay sie bathege: pons aie eneqaa, : st ‘iehia th , Szag etsy arort eae As = bed Bo ddwoxs boaooss seid aK ne ey toldoysadtem to javog L viene fiw adele adt es .osbive eens. Wiebe». Roget 2 Beflt gon Se aenaene tt rst ct aloal 32 sont 7 siolsd inoldusy dom akaf .enoisuacsrg Ls sgorsasd sup den abkobiosesh eden Ot Pp Lasoa ect vi vd ibaveqezd ask PLO et yitesiy alat : pf iscdell aiert ith Line aoivre aolanoy tnod duet dus .eoivioh Laat erent adore “ebe ew of bode oni excteveqoos bas otekaotom FOR IMMEDIATE RELEASE June 16, 1961 INSECT SURVEY BULLETIN NO. 9 This weekly bulletin on the general insect situation in Illinois (fruit insects excepted) is prepared by entomologists of the Illinois Natural History Sure vey, University of Illinois College of Agriculture and cooperating agencies. It is designed to forewarn people in Illinois of impending changes in insect activity and to suggest abbreviated control measures. These reports indicate only general trends. Each individual should check his own fields to determine local conditions. Corn borer moths are now laying eggs throughout the more heavily infested area, which is north of a line from St. Louis to Danville. In general, weather conditions during the next three weeks may determine the severity of corn borer this year. Wind and rain storms kill moths. Hot, dry weather that rolls the corn leaves causes egg masses to fall to the ground, where the tiny borers will not sure vive. Moth emergence varies from 50 to 80 percent in south-central Illinois; egg laying will continue for another two weeks in this area. Emergence in central Illinois varies from 30 to 70 percent, and egg laying will continue for two to three weeks. Emergence in northern Illinois varies from 10 to 50 percent, and egg laying will continue for three to four weeks. Corn 30 inches and over, extended leaf height, in the area north of a line from St. Louis to Danville and south of a line from Kankakee to Rock Island had from 50 to 280 egg masses per hundred stalks this week. Hatch had just begun. Start insecticide applications on the earliest fields in this area sometime the week of June 26. North of this area egg laying is just beginning, and treatment should probably start about the first of July. Cool nights will retard egg laying and delay timing of treatments for best control. It is entirely possible that moths may continue to concentrate egg masses in the most advanced fields of corn; borer survival in these fields will be high. Therefore, observe these most advanced fields closely for the next three weeks. To determine the need for treatment, examine 50 to 100 plants for signs of borer feeding on the whorl leaves. If 75 percent or more of the plants show recent whorl feeding, check the tassel ratio. Measure from the base to the tip of the plant with leaves extended. Split the plant lengthwise, and measure from the base of the plant to the tip of the developing tassel. Divide the tassel height by the plant height, and multiply by 100. Take an average of five representative plants per field. This is the tassel ratio. The corn will warrant treatment if the tassel ratio is 30 or above, but, if possible, treatments should not be applied until the ratio is at least 35 and preferably 45. However, treatment after borers have drilled into the stalk proper will not be effective. DDT is still the insecticide most commonly used for corn borer. Apply al 1/2 pounds per acre as a spray or 3/4 to 1 pound per acre as granules. When spraying, arrange two or three nozzles over the row to cover the upper one-third of the plants, particularly the whorl zone. Other insecticides approved for use against corn borer include endrin and toxaphene. Ensilage or stover of corn treated with DDT or toxaphene should not be fed to dairy cattle. Endrin may be used in this case, provided label restrictions are followed. C . 2% OL smi an HERAT. ADIGE ROE @ 0H auaouL Seer ty re aS onset aloniiit af ofc oo Bu iotdaoo hetetverxdcs tessase of Sea io bivors fevbivibur dost .abrexd {ron ef dotiw ,asre it xed odd geiwmh anobhibnos 2 uber. ons beige “ESOY abd of g98zet nae asauss sevest “aviv -- we pe Feesey Oe ea Feel YeveRa ay hand's a pudeaair yr Tol ifiwv ackyel yse so lvay ebook ii ae -wisew aout iidnoo [fkw goabyst wine QLSg f ort aatt Aagrnm ans Of ov oe mort Sasi ray fokinsaat tusda to iiaot Se sed zo ae “ ~ ene fey art OaS ‘rks 523 aorta: , ry 5 ow rensseys sit Aart Be bocnavbs tnom add at | t ovisado ,svolered? Hahosds PT utateled feos tab of EOE rollos ats sales Canners should examine sweet corn this week, as treatment may be necessary starting the week of June 25. For the next three weeks, carefully observe any fields with a tassel ratio of 20 or more. Market growers in the northern half of Illinois should plan to start in- secticide treatments for borer control this week (June 19). Armyworms became evident in some areas in the southern half of Illinois this past week. In many areas the worms have now practically matured, the damage is done, and it is too late to profitably apply insecticides. In other areas small worms are still numerous, and in these cases control may still be profitable. Farther north, worms are smaller and damage is not yet evident. When the worms are predominantly only half to twoethirds mature, control will be profitable. Continue to examine rank stands of grains and grasses for the next ten days. If there are six or more worms per linear foot, or 12 or more per square foot, treatment is advised. Smaller populations can be serious if they begin to cut grain heads. To control, apply 1 ie pounds of toxaphene or 1/4 pound of dieldrin per acre for small grains. Allow 7 days between treatment with dieldrin and harvest, and 7 days for toxaphene on wheat, but 14 days on barley. For beef pastures, use toxaphene; allow 42 days between last grazing on treated pastures and slaughter, particularly if toxaphene is being used on the animals to control flies. For dairy pastures, use 2 pounds of methoxychlor or 1 pound of malathion per acre, but do not graze for one week after treatment. Cutworms are maturing rapidly and the damage to corn is about over. The cutworm moths from this generation are starting to emerge. They probably will mi- grate north, but may remain here to lay eggs. A later outbreak is therefore pos-~ sible. Grape colaspis damage may appear this week to corn and soybeans planted on clover sods or after two years of beans. These tiny, comma-shaped grubs eat the root hairs and may scar the main root. Damaged corn turns purple, and beans turn yellow. Yields are reduced, but rarely is damage so severe that replanting is warranted. Control measures are not effective this late. Grasshoppers are hatching in the southern half of Illinois. Control these infestations while the grasshoppers are still concentrated in the fence rows, ditch banks, and grass waterways. Use 1/8 to 1/4 pound of dieldrin or 1 to 11/2 pounds of toxaphene per acre. Do not apply dieldrin to pastures grazed by dairy cattle or animals being finished for slaughter. Toxaphene cannot be used on dairy pastures; it can be applied to pastures for beef animals, but not within 42 days of slaughter. Pea aphids are present on second-growth alfalfa and clovers, but not to the extent that they were a few weeks ago. Weather conditions will determine their importance. Warm, muggy weather enabling a fungus disease to spread rapidly would reduce aphid numbers drastically. New growth can be sprayed with 1 pound of mala- thion to within one week of harvest or with 1/4 pound of lindane to within 28 days of harvest. If new seedings in grain fields are being seriously attacked, use malathion to within one week of grain harvest. Flea beetles are decreasing in number, and the next generation will appear in late July and early August. Corn is now rapidly growing away from the damage of the past few weeks. “itoo Isswa enfwsaxse Divade aronisd i «QS anh to dsow edt goiduate .- OrdM YO CS to oftser levasd = ddfw ae ail ghee isvwao ,atasw ewak diate o¢ g Sfcrore gtontill to tisa sredihrarn ork LOWOUS Sanita! ees ; A . Fi rae ‘ G . ie Setuty j teow atdd ioidnoa rerod rot etrombeerd ebiottooe 2 a4 %, c oe 5 atonst Shit M0 c&seote ; Si Snebive suscad fsoetg won ovead auow odd esete ua Vicstitorg of sist coy al dt Bae ,snob af Byes wk Das ,evotemuc Liisa axa acrow cad Es pat BaD iowico yitasmakmobend ehrisd a Dace enimexs of OW 9XOm 6 Kke eit boelvis ye en ae Cais Po Tot aay : ' oo of ateert noswise ; , ifeme tol -sras ot sok eyah J Sua Is ronedgexot ‘vYlrsivoldieg say ,estutesg “Smo tol ssety reckeathety BOOWIOS wo aL sterord Ahremdasts rs. oe oe arcowdito iS Sioa stay oldie nee se emia we ne to BOR a no wetend door ' wolley > edeaneae arcs £ year f : Su biato net cae Seah Poh es be ent aot Fok Le 8789 », re Tee att ieee ad ct 68 v de w ster ebe 1 Fasdxs ond i aes! .soardrogark s9uUbe% Sade cee ne WOT E af ok. cher pyre PSs < Le te © BOWS rs ate. of a eee »ausew wet rasa suse Sh .wtoow cag atat isifeue aus enmrow ,ddros teddéast oe Stored grain insect control can start now. With wheat harvest rapidly approaching, take steps to protect the new wheat from attack. Clean out old grain and other debris from in and around the bin. Apply a bin spray of 1.5% premium grade malathion or 2.5% methoxychlor to the point of run-off. DDT should not be used for this purpose. Treat the wheat with a premium-grade malathion protective dust or spray at the rates recommended on the label. Anyone planning to store oats or shelled corn for longer than six to eight weeks would also profit by using this treatment. Treated grain may be fed to livestock or marketed with complete safety. Bagworms are hatching in central and northern Illinois. This is about two weeks later than normal. Apply insecticides in the next week to 10 days in central and northern Illinois. After hatch is complete, apply a spray made with two teaspoons of 57 percent malathion concentrate, 3 teaspoons of 60 percent toxa- phene concentrate or 1 tablespoon of lead arsenate per gallon of water. A second application two weeks later may be needed. Do not apply malathion to Cannart red cedar, as injury may occur. Caution: Before applying insecticides, read labels carefully and follow all precautions. This not only will insure personal safety, but will also elimi- nate insecticide residue hazards. eG 96 96 36 9 6 26 This weekly report was prepared by H. B. Petty, Illinois Agricultural Ex- tension Service and Illinois Natural History Survey, in cooperation with the USDA Agricultural Service, Plant Pest Control Branch, from information gathered by ento- mologists and cooperators who send in weekly reports from their own localities. HBP :mfb 6/16/61 “f= | : - cage susvied dsenwctew wor dusde nso Lowimos fogamt tinwy. (9 .ieates ook deodw won orld dastoig of ages exist . yetgs ar s Yaga intd edd Snvoce bon at siord pee = G WStowumn lo sok oq ant of soLsoysonten 8248 ie) ae Aor talmntsieg ahold STystimety s dtiw ddect edd dsol sad 2 ,fedal sdt a0 hebiemmnoos% aotex ¢ 3 o¢ «he cedt tegaoL | oe a r if adeow SAuk so doodeovil bok od Yeo aisty bs yatqa io dauvh ovitostorg Hej et A de nist ni wtaaatsony 29 BE gatdotad Sus enrroupe® 4 a esbioksosgnt esi ee neiiy otal adsow ow 3 ai doded ted%A ont Phage eusditon bos: farts etaeodes Boks ¢ J@ 390 enodgases £40 4 sHees neon sais - ie £ t ‘ sen? Ve “anosdusosg L Baste ae Lottosaak avold Soe cs fer Bo ri VOSA FOR IMMEDIATE RELEASE June 23, 1961 INSECT SURVEY BULLETIN NO. 10 This weekly bulletin on the general insect situation in Illinois (fruit insects excepted) is prepared by entomologists of the Illinois Natural History Sur- vey, University of Illinois College of Agriculture and cooperating agencies. It is designed to forewarn people in Illinois of impending changes in insect activity and to suggest abbreviated control measures. These reports indicate only general trends. Each individual should check his own fields to determine local conditions. Corn borer moth activity has been retarded by the cold nights. They will not lay eggs when temperatures are below 50° and egg laying is slow even between 50° and 60°, but with the first few warm, calm nights eggs should be deposited in numbers. With cool nights moths will lay eggs in cornfields during cloudy calm days. However, the longer the moths are delayed the more likely that wind and rain storms Will kill them before they lay all their eggs. In general, moth emergence is complete or nearly so south of highway 36. From there north to highway 6, up to 20 percent of the moths have not yet emerged from the pupal stage and in northern Illinois 20 to 30 percent are still to emerge. With the moths yet to emerge and with the cool nights, egg laying may continue for some time. Egg mass counts are quite variable from one area to another. The area bounded by the Mississippi river and a line from St. Louis to Decatur to LaSalle to Rock Island has the highest counts at present. Egg mass counts in field corn here this week varied from 0 to 440 per 100 stalks in the most advanced fields. The area north of a line from Danville to Decatur and that north of highway 6, had counts ranging from 0 to 60 per 100 plants in the most advanced fields. Egg lay- ing may just be getting well underway in this general area. These counts are about the same as they were in 1960, lower than they were in 1955 and 1956, but higher than in 1958 and 1959. Since corn is more advanced than in 1960, the borer survi- val may be higher. As usual corn borer development is earlier on the west side of the state than on the east. General time to start treatments in the most advanced field corn in the area south from Quincy to St. Louis is still sometime the week of June 26. From Quincy north to Rock Island the time to start treating will be late the week of June 26. Treatment where needed on the east side of the state will be a few days later than this. Do not begin to treat field corn in the area north of highway 6 until the week of July 3. Delay treating those fields warranting it as long as possible. The clearance height of the equipment may be a limiting factor in how long you can wait to treat, To determine the need for treatment, examine 50 to 100 plants for signs of borer feeding on the whorl leaves. If 75 percent or more of the plants show recent whorl feeding, check the tassel ratio. Measure from the base to the tip of the plant with leaves extended. Split the plant lengthwise, and measure from the base of the plant to the tip of the developing tassel. Divide the tassel height by the plant height, and multiply by 100. Take an average of five representative plants per field. This is the tassel ratio. The corn will warrant treatment if the tassel ratio is 30 or above, but, if equipment clearance permits treatments should not be applied until the ratio is at least 35 and preferably 45. However, treatment after borers have drilled into the stalk proper will not be effective. Continued cool nights which retard egg laying may delay timing of treatments for best control. J oO WEDELIUE. Yarava TORT = Sivv?) efoolliy mk sa Soaent LETBISG edd ao sitet fud yinesw abot Ai eM * gdeivelonodie vd Hoysgsig ak (bedqsors ago ose roLegA te emetiod afonhilt te wreevevin agnt to atogiini ai slgesq arswarot of bongkeeh ater Laveses » odeo thr. fen oaed? .earvecon Lorttniga botal vornddig taonagua od £t awo iste woods Bivosda Csubivibat das re 4 Lit edtasl uchty ivos Atom xsiod mot He ots ustudaragmar on cas soe in fon. 7 wet Fone exit cihiw ths . siw adtom a aia i ooo £ ne area | oy! Ie & YRWhSt Od oe * Qt bus asacre Lsyuiz ont MOTE SOL auaditgaan ¥S a} hedauod of Soslel asok - xsv dosaw atat ¥ OMY 8 3 aes itsoy Bers, rare GA oF O ne gitaror adios: aifttes sd tagh yea gat TOW oul BS omee ond dyods DAS pe uk nupelt Po mre curt . SISHavVas Veo eutsoetl prey te Poimres gs om MTOS Latah S beoasrbs dovae aes diver yontee 7 0S sant be we ‘oak ee ot Lisa saldiegog may Mtr Cathe he At dated ior oh ce ine i ee ae fdas verod ‘to Rtas ms ody cago agus usvs i : aele sit edd od goodie a yo sand Hat Bss oie oh Gaelg eit shiek yee adnelg sages any Jou bfvoda tromda ered berercacd ~Lorsnoo dap sey gt “ae: To sete te omg ose owe eelele ok whee Se ale DDT is still the insecticide most commonly used for corn borer. Apply 1 1/2 pounds per acre as a spray or 3/4 to 1 pound per acre as granules. When spraying, arrange two or three nozzles over the row tocover the upper one-third of the plants, particularly the whorl zone. Other insecticides approved for use against corn borer include endrin and toxaphene. Ensilage or stover of corn treated with DDT or toxaphene should not be fed to dairy cattle, Endrin may be used in this case, provided label restrictions are followed. Stored grain insects, With wheat harvest starting, take steps to protect the new wheat from insect attack. Clean out old grain and other debris from in and around the bin. Apply a bin spray of 1.5% premium grade malathion or 2.5% methoxychlor to the point of run-off. Do not use DDT for this purpose. Treat the wheat with a premium grade malathion protective dust or spray at the rates recommended on the label. Anyone planning to store oats or shelled corn for longer than 6 to 8 weeks would also profit by using this treatment. Treated grain may be fed to livestock or marketed with complete safety. Weather conditions of the past 10 days to 2 weeks have affected corn. Do not confuse this general damage by wind, cold weather, and possibly hot sun on tender leaf tissue with insect feeding. This weather damage appeared as a white searing of the leaves, yellow leaves, and broken leaves. It was general throughout a large area of Illinois. Caution: Before applying insecticides, read labels carefully and follow all precautions. This not only will insure personal safety, but will also elimi- nate insecticide residue hazards. HEHEHE HH K€ This weekly report was prepared by H. B. Petty, Illinois Agricultural Extension Service and Illinois Natural History Survey, in cooperation with the USDA Agricultural Service, Plant Pest Control Branch, from information gathered by entomologists and cooperators who send in weekly reports from their own localities. HBP:b1 6/23/61 i ; " yLuommos daon shlottosant oft {Live at raga line veq Baveg £ of A\E ao vetae B ee 28 eq abavog Fans f at wou BHt neve ael ine ‘sorclt e wt aggorre (gatyerga sation vow add wie joloveg cate a to bu tdteor Sue tesbae sv. Ok Revoxqds asbieitoseni toltO — = ad dom BLrorie here mios to tsvats yo sgetlend .emeedqax ee Pe ey. a -= 7 ‘ A 2 . enoifcrass Ledgl bar na 2 aisd ok boa d att | abshod eltdss ‘ysisb oF | hewoLlott ons sootoug watosant sisia beds rly ul fo .Noaide Sosent mort Sse woe silt ida old's ylooA .aid edt bavore bas ‘Toedin to trtoq ont oF ‘so.Ldoynontt oi «ot Cw ; vsadw sot abies si ad mo Beiaomacos: aster edt te - wieay & of & aedt tog nol hee SOD veodesvil of Sek od var afaxs 5 esol ; erolttbuog veilies us yagi h. 2 Lotense art Saude ton q : hiv ope by Retin reboot ‘ “SA bvsse 4 cones 8 | neal aorct oes m cy yrcees, suet Ae Whe. Yt ae CRO iy ou ae oot saibv tac; ‘a HOSE rae ives) “AS ae pmirnanccn woe i eed fiw vino dou akg - .ago. Puessta ifs fast sSloitebank svsr $ gerd sAwTEy Sa suh RiSeY BBW Fac EB Lenudsti yet sow efat : esives® solanedxe SeudivokenA AGU fas atealgolomodaa NS fs FOR IMMEDIATE RELEASE June 30, 1961 INSECT SURVEY BULLETIN NO. 11 This weekly bulletin on the general insect situation in Illinois (fruit ’ insects excepted) is prepared by entomologists of the Illinois Natural History Sur- vey, University of Illinois College of Agriculture and cooperating agencies. It is designed to forewarn people in Illinois of impending changes in insect activity and to suggest abbreviated control measures. These reports indicate only general trends. Each individual should check his own fields to determine local conditions. Face flies have completed at least one generation this year; eggs are now being laid for another generation and from now on, generations will overlap. This week some herds averaged 40 flies per animal. Other herds averaged less than five per animal. Animals in dry lot had the fewest flies. Observe cattle between 10:00 a.m. and 3:00 p.m. as flies will be most active during the middle of the day. Complaints about face flies on cattle have been received from the area north of a line from St. Louis to Lawrenceville, with the largest populations in the northern half of Illinois. The situation is alarming and a control program must be started now and continued faithfully. Do not underestimate the seriousness of this problem. High temperatures speed up the reproductive rate and the increase in face fly numbers will be rapid, reaching an expected peak in mid-August to early September. Take immediate action to control those now present. For dairy cattle, apply DDVP commercially prepared face fly bait to the animal's forehead for the next 2 to 3 weeks and then every 3 to 5 days as needed. For beef cattle, use 5 percent toxaphene in a backrubber. Homemade backrubbers work as well as commercial ones. Run a taut line of 4 to 6 strands of barbed wire from a post about 5 feet above ground to a stake in the ground about 9 feet away, and wrap with gunny sacks. Saturate with the toxaphene solution. Place the back- rubber where it is readily accessible and will be used. Do not treat cattle with toxaphene within 23 days of slaughter. The corn borer situation has eased considerably. The last emergence of moths occurred this week and scattered egg laying may continue for another 10 days to 2 weeks. However, there is so much corn attractive for egg-laying that the eggs yet to be laid will be scattered sparsely over a large area, but borer survival from these eggs will be high. Even though first-generation corn borer numbers are not expected to be concentrated in a few fields, the average population over an entire area may be sufficiently high to produce a serious population of second- generation borers in August. Examine the most noticeably advanced fields in a community this week as an occasional field may profit from treatment. To determine the need for treatment, examine 50 to 100 plants for signs of borer feeding on the whorl leaves. If 75 per- cent or more of the plants show recent whorl feeding, check the tassel ratio. Meas- ure from the base to the tip of the plant with leaves extended. Split the plants lengthwise, and measure from the base of the plant to the tip of the developing tassel. Divide the tassel height by the plant height, and multiply by 100. This is the tassel ratio. Take an average of 5 representative plants per field. The corn will warrant treatment if the tassel ratio is 30 or above. Applications of insecticides, where necessary, should be applied now. Treatment after borers have drilled into the stalk proper will not be effective. fel OF anut if OF wnCRug Yavive tome dinat) sioari(l mt oe Soseai Lerensy ot mo pide dtud qtlbey ee a8 yee Seatell « it off te atohaclowodae yd Devagerq ab (bs: 4 elovsns sito Die wEwd itsoinga S no omedfot atonklil to ytke bra Wividss cogant ab ooymado sspiysqmk Da-akonkLli at efgoeq ox es os § ,abaord fapenan yino edeatoudt evxogen gest .asterasem Ioviaos Setatverdds < yalOnsibuop Eecal antmisted of abisr two sid doerio Sinoda Leubr WOH BUS UpEO iteey. edd cok — > an, tesel un badalgnos eved setts see" = aigt .qaiceyo Iliw esoliteteanse pio woo monk bas co. sag 4 stand j FaRSYSVB 2 . » fsnfas ea asiit Of BSQBIOVE abtod nagdd .gutit Seevet aft bed tet yrs at afsartnd ok s¥e> ec Fe ofpbter oat gates svides deom so ifiv esrikt ae .m¢ 00:8 Das Oe Oa wait stddes no eetlit enet duods edntel iw valiivesseiwad os givod .f8 mow: ar pas 4 emo Le + : asd d; gti Lowdgos s bas sntexefe of notdar Meck wotdorg aide To nastavokvoe off sdenktestabor ten of netbilttst J ee 5 5 he be ovborget oft gy — asnatete SLA Ps en] vegagxe ms geidese: bigs ed ; geerkd Jeutwoo ie aozteg steakb aid ot $ Listoreumms GVG0 yloqe ,oftise veisbh wot ~ weno as syab f of F ere bax afsow £ od & dean eft sot besdenot a? SEatdwsT ose reais onsdiorat wi @ SE suadgexoe gasoisg ¢ say .siigso tssd_ heddad te ak of @ ko emtl tvst 2 cul asso Inkerommgo ax Lfow eng teo% € tncds teoq s ating yng ddiw Da ei pbao ai ok oxodw ays Of atddiw onan ‘tocod irr09 och? orang raf) gine pew maton: ig Has’ alas beytsaeo ad eerie fayvsuel wisew “S 4). ‘ ininf og ELiw apne sendt tS at sotentssorce ad oF betosgKs- oy gad eocebes we oc Yen 2558 sbeicen ne -etetog soiveiensg — Sroct ioe ofse vhyeel ‘i. d? od soad sod aos ag? mow suvasem Dag ,.saiwivadsl my Ck? sarki nocot : vom EGSsiy Lanorassso fa ~ ; degkad Leased acid ehtwid .Sozaet | ‘ays os ade? «tite: lowest odd ak i Lo at Bo oved zo gow Sobiges od Bis pases ouondy sebborssoank wviderthe ad gen tfbw tone g aipte ars ‘odek boliish sy 2 Paabiaak Ae Of OF EATS is Uf ¢osirfeayd fuereay file oxos | “Oe DDT is still the insecticide most commonly used for corn borer. Apply 1 1/2 pounds per acre as a spray, or 3/4 to 1 pound per acre as granules. When spraying, arrange two or three nozzles over the row to cover the upper one-third of the plants, particularly tne whorl zone. Other insecticides approved for use against corn borer include endrin and toxaphene. Ensilage or stover of corn treated with DDT or toxaphene should not be fed to dairy cattle. Endrin may be used in this case, provided label restrictions are followed. Grasshoppers. Control grasshoppers while they are still concentrated in the fence rows, ditch banks, and grass waterways. Use 1/8 to 1/4 pound of dieldrin or 1 tol 1/2 pounds of toxaphene per acre. Do not apply dieldrin to pastures grazed by dairy cattle or animals being finished for slaughter. Toxaphene cannot be used on dairy pastures; it can be applied to pastures for beef animals, but not within 42 days of slaughter. Leafhopper eggs are common on corn in western and southwestern Illinois. These egg masses, often confused with corn borer eggs, are laid in leaf tissue in a fan- or kidney-shaped area. The individual eggs are long and narrow with four or five in each mass. They can not be dislodged easily as corn borer egg masses can be. Elm leaf beetle are now abundant on Chinese elm. To control, apply a spray containing 4 pounds of lead arsenate, 2 quarts of 25% DDT concentrate, or 2 pounds of 50% DDI wettable powder per 100 gallons of water. Caution: Before applying insecticides, read labels carefully and follow all precautions. This not only will insure personal safety, but will also eliminate insecticide residue hazards. FREE This weekly report was prepared by H. B. Petty, Illinois Agricultural Ex- tension Service and Illinois Natural History Survey, in cooperation with the USDA Agricultural Service, Plant Pest Control Branch, from information gathered by ento- mologists and cooperators who send in weekly reports from their own localities. HBP :bb 6/30/61 7 "a! _ “Su eek a 7 fggh .xevod mice tol secu yLuogmoo daouw aviobtosand odd Iitts ek usd sselut.g as ence req bavog Lot #\E 2o ypice 8 ao onde Tod | fe eildtecno vagg sat teveo af wor st gevo ss fee ine Sonis tO ow san s iuadw edt vyiasivotis Sra ntebsis abhuieakt saved unca gs ad gos Dieors eustaexot * so NIC détw be ae retoe ‘to teyove ro anckicintaay Lodel Sentra ,oaso Bind ak bors ed yoo mivbai te Sohectras 109 mec Sis ysct elinw sveqqodaasia ohooh 2 risliskb to Bavog AVE ot ONL eat abso wiotsw eaars bos .aoed aptuce sq od reid viens ¢ oe = .SE98 ie ermadgaroy “tu- abauvog § too: cuidgex Taitisuats ot Sederol) 9a alanios io sities ¥ doa dud pena “Essa sh neutesy oe Bed leas o mao dL asuwdese yout HEuBLE TO a 2 moO WOoMMOD sva aBss segqod: oo ghtin Beeston ros 822 sue fbak seaT .eets facades ofeth ed don nus yea .sagar 3 & Ylgqgs ,fovtees of nis sasait no dye spuds WOR Sys" eirsod teat . ne, Nyy ane, ‘= oo erat) mg Beg "bes misen e aoe Nyatrapens fs fy, get re) BE Tec f ay ia] ssetew go exoties OGL veg usbweg eldedd a) rei ee bam “loos 6 euotsh 18¢ ~ittw elo dem ale .adtol 2iussed aublest ALS, “ Reese aura? of it wa Sex ee wav dreos. wiesw altar nk LEE v SH ue ‘wae ek Leconte stent ltt Dae eokvred goa: EET oo gaat gust ,soivred Lex edraosy pee ni foe che cone wooo Late ; ee 14) FOR IMMEDIATE RELEASE July 7,5 1961 INSECT SURVEY BULLETIN NO. 12 This weekly bulletin on the general insect situation in Illinois (fruit insects excepted) is prepared by entomologists of the Illinois Natural History Survey, University of Illinois College of Agriculture and cooperating agencies. It is designed to forewarn people in Tllinois of impending changes in insect ac tivity and to suggest abbreviated control measures. These reports indicate only general trends, Each individual should check his ow fields to determine local conditions. Face flies are the most pressing farm insect problem in Illinois this week. Right now they are abundant on cattle on many farms. Almost all herds of cattle, dairy and nonedairy, north of a line from St. Louis to Lawrenceville have some face flies present on them. With warm weather the numbers of face flies will increase rapidly reaching a peak in late August or early September. South of this line from St. Louis to Lawrenceville face flies are not numerous enough to be cone idered a serious problem yet. From all reports DDVP sirup face fly baits applied to the animal's fore- head are giving good results. However, they must be applied daily for about two weeks, then every 3 to 5 days or as needed, This control, although designed fo dairy cattle, can be used on non-dairy cattle if feasible. Toxaphene, 5 percent in oil, in a backrubber is recommended for non=deairy animals. The effectiveness of this method of control is dependent on the animal's willingness to rub its head on the cable and the abundance of trees and brush in the pasture. Do not apply toxaphene to livestock within 28 days of slaughter. Animals that have access to sheds or barns gain some relief as many of the face flies do not follow them inside. Animals in dry lot have considerably fewer flies than do those on pasture. Grasshoppers are being reported in very localized situations. Control them while they are small. It requires less material over a much smaller area now than it will later, Examine fence rows, ditch banks, and grass waterways for small ‘hoppers. Although luxuriant vegetation in these areas may hold them for some time, it might be well to control them now. Use 1/8 to 1/4 pound of dieldrin or 1 to 1 1/2 pounds of toxaphene per acre. Do not apply dieldrin to pastures grazed by dairy cattle or animals being finished for slaughter. Toxmphene cannot be used on dairy pastures; it can be applied to pastures for beef animals, but not within he days of slaughter. Picnic beetles or scavenger beetles as they are called, are now emerging and will soon be a nuisance everywhere. These beetles are about 1/4-inch long, shiny black, and have four yellow to orange spots on their backs. They are attracted to the odor of food. They get into the food at picnics, and outdoor barbecues. They swarm onto overripe or injured fruits and vegetables in gardens. Keep gardens and berry patches free of overripe and rotting fruits and vegetables. As fruits and vegetables become ripe, pick them immediately. Prevent- ing injury from other insects will help reduce the numbers of these pests on vege- table and fruit farms. Sprays of diazinon or malathion help to control them, but it may be necessary to make repeat applications as beetles migrate into the area. Follow labels on containers for time intervals between treatment and harvest. sare TQARTGR STATGOMA HOW SE GH WUMEUa YaVHUe TOSS can noltsafin fasaat AGES OL ase go mirealind (Jaleo ality? pier gut jo eTafsoion etal vd Sousoorg Sst® suydtliocina Yo oo sont i sy to. SSnocwsk to efor Skqoag gesve Spool? saaxveaaen Loutuoy bade veces ponaeh of hs ato Stil one Leubivibst desd .abasiy ™, .BMO toy gaty Geo sit sum as krt goat egret oh Be ¥ a Wot : ' pros oyuisSenrod Gns x shed 43 atadt co dusaetq colt % eos aeg 8 witkdeses fbi rah at jibe or akin oe = mort ekat efor kine ar ie efied Die tar Somers DBUED nds $ “ aici rele a 5 as ei oS Pale fe) oe Cs. a pC a E — % =) ion so dae ad ase .sittss yrteb adit walamias dors ot segment tt ee T .oxudaa odt * - . = “SA Ze 7 ~ = TLRS Se #a9o08 svat deett oer ~ 4 eq Tiesal tenet - in oii alana webkent wot of asiLt sos eat . - oO pen eokit “tewes Fes patie fe od wr Fo | Yluslueivies jrotiauele oxoted ayab =O wes sioenepenieestosd vp ne fi haar sated weve’ "gerd siged 10 abubis to 2 OND MEmeod Sis evegootkass. gest sSisiie ac ant : won af snaaqel MegqqouTssel Ete gigi teers 2 bequda=bsgbew yale operetta , Sc Setoude oes ed visel wo .idniebiva seat OTSA exe enue? tage uteaey TO guevrad to wbew ano = rob igs se sere 2 Lisa Pe cena >ye orl oy tO Mad “uodew 2 eet TS dud alamins yaleb~cor so Boag od Bineesay Pd i ne fowatne ved ayetga g tHoLisg mi Grolivag Ysa RAW arogee witiesw aket mantel] afoortit Bea ec shake robanad dead oy Lanne fvolys& hoes ow atta eqooo fun, atakgoloe awed: FOR IMMEDIATE RELEASE July ay 1961 INSECT SURVEY BULLETIN NO, 14 AE LHARARY OF THE JUL 24 196] This weekly bulletin on the general insect situation in Illinois (fruit insects excepted) is prepared by entomologists of the Illinois Natural History /Sur- vey, University of Illinois College of Agriculture and cooperating agencies. It § SAIS designed to forewarn people in Illinois of impending changes in insect activity and to suggest abbreviated control measures. These reports indicate only general trends. Each individual should check his own fields to determine local conditions. Grasshoppers are abundant in spots throughout the state. In some ine stances they are moving from fence rows and ditch banks into the edges of soybean and corn fields. Where they are still concentrated in ditch banks, fence rows, grass waterways and similar areas, apply 1 1/2 pounds of toxaphene or 1/4 pound of dieldrin per acre. For corn or soybeans, use 1 ounce of aldrin or dieldrin or a 1/2 pounds of toxaphene. When using aldrin or dieldrin, allow hO days to elapse between treatment and harvest. Do not feed toxaphene-treated forage to dairy ani- mals or animals being finished for slaughter. Use one pound of malathion per acre on forage crops or pastures for dairy cattle. Allow one week to elapse between treatment with malathion and harvest or pasture. Leafhoppers, tiny, wedged-shaped green insects, are abundant in alfalfa. Damaged fields are purplish-yellow, and plants are stunted. Control of leafhoppers will not be profitable after the damage becomes evident. Mow the field and examine the new shoots. If the wingless leafhopper nymphs are numerous, apply 1 pound of methoxychlor per acre. Do not treat within one week of harvest or pasture. Face flies are becoming more numerous, and severe eye infections of cattle have been reported. Observe cattle in the pasture during the middle of the day. If there are three to five flies clustering around the eyes and nostrils, start fly control immediately. Use DDVP face fly baits on animals that can be handled. On non-dairy animals that can not be handled, use 5% toxaphene in a packrubber, Do not apply toxaphene within 28 days of slaughter. Picnic beetles or scavenger beetles are about 1/4 inch long, shiny black and have four yellow to orange spots on their backs. These beetles are attracted to the odor of food and are particularly annoying at picnics or outdoor barbecues. They also swarm onto overripe or injured fruits and vegetables in gardens. Keep gardens and berry patches free of overripe and rotting fruits and vegetables. As fruits and vegetables become ripe, pick them immediately. Prevent- ing injury from other insects will help to reduce the numbers of these pests on vegetable and fruit farms. Sprays of diazinon or malathion help to control them, but it may be necessary to repeat applications as beetles migrate into the area. Follow labels on containers for time intervals between treatment and harvest. Control of beetles in backyards and picnic areas is difficult. Either malathion or diazinon applied to bushes, around garbage pails and in similar areas a few hours before serving food is of temporary benefit only. Beetles may be attracted to the food from quite a distance and fly in over the sprayed surfaces directly to the food, Yellow clover aphids are abundant in occasional fields of red clover, particularly in the southeastern part of the state, where some damage has been noticed. These yellow aphids become abundant on the lower part of the plant and then slowly migrate to the upper part. If control is needed, use one pound of malathion per acre, but not within one week of harvest. BOAMIOR GATTO HOT SE OH WITHISUA YEVSTUE TOU TAI ial etookt ll ot to edatgolosmtas ye boraqeta ak pera SI .astorvons ages gists 72 Sas siniivokysA to epsifod elonE Ltt aa Sriz oy PEVES 38 sgank ak aopusde yatbaognk to sienkiitl ar eleoag seavorece of bog is LeTsiey bay adipoiont advoger sastil .asiyes on fondness hese trardds taognua od | aé sake LBaos Laan. meteh of BbLekyY awe ald voedo bivorsa Lovbivibal dost sebgent wk notjeutie Foaant Lnroney ent oo otteliod vinisaw gidt ? : g oor sus aot oe a Na "ue yadt eonnete | ak paces fens [lite ons oS os .25talt axoo Bae | ebeurog S\E i yl 1S xo apo Baranry _— h(i 2 oayo £ say OED yo fe htc Rts 237 s , he betas eg we SS ° wa ABH wisond «stad saan bs sia ane Ol .Jaevrsd = MELIT oft to adatgofLomod¢ne yt Bouscetg al (bsdqeoxa dst ut “ot sasiogays Jstaqocs hms omsinolwA to aneliod atontiIl to ytLatevial! hae yYdivictas dooant of asnasdo ag sae ko afonrili of eligoeq ovewotel of Bos .Abveit Leromen vine siestonk ee saem) .goxvesen Juitios boteivesdda daeg igo $sb of abfert awo aid twero Sivods Law oer pan Lfow ef tdghrt don stoted 4 syoved ooldevemesedatit Sar = sci sow Lstevea Jusa oct tol sunidnoo ELb onse odd duods od yldedotg LLtw nokt oe SRB ue baa parkmise sob oxeo dtoawe yYlivesd sxost ad ver touscean ame we > oun Pom 4 * ~ - . loka hme e on De SOWNSS MTOO .Ho ee ff wisye v yuot gasg sit cot sent tase SORE AI eet re eekee wee Me abd good of badosgxes af mal qT .agye ysl of somtd — Oves DY “tit isl # Yo sgemsih siovwt Betossore ¢ ain Of yaupuA totis beteeviad.ed of THws? t Joxtoos xvoved sroo Bae atow: hoox ,tortibis nil .asxgone, a | ‘ate asltesd ofmoetg Sos aatvood $82 en Ne mee ES ee ee AR MR emer eves ee 22s to a) fas neadvog of abfelt qore ,aSvool 21 Ca Biot att ‘to anigued ay urn wivasl ors exreggod ond Sos favs fe 20! Mera Kgog aslitersct yfno ‘sved van 2: Pw he oh ne rh enrtoada: Sist tank esegged*te - raqqosi! Setvetoug tovee ent boaatm - dovon oct ere gy 43 Wee Oe eB ee rar: sherins ay what otha a! sent HOY ¢ S\tod Oistds toe efeatos ne te roury Ty epee ¥ sees we fee, SOLE SEE OEM — ~*s . antes ee ths fle, Canaeeren <= ere svao gavast SNwIOD sxe aitrrow ell ano of atuela Sotest SYBOTOOL 20HaDiVe B9Neo 2oiol ee me SO SSGO efor ick BOLAY Rca iu98s == properly, but must be applied daily to a strip about six inches long and an inch wide on the animals' foreheads. After the population has been brought under con- trol, maintenance applications every three to five days will be needed. For non-dairy cattle that cannot be handled, 5 percent toxaphene in back- rubbers have been giving some relief. The effectiveness of this method depends entirely on how much the cattle use the backrubber. Where the problem of use exists, study the situation carefully to determine what tyve of backrubber to use and where to locate it. Even when properly located, backrubbers must be recharged about once a week for best results. When using toxaphene, do not slaughter animals for 28 days after treatment. Caution: Before applying insecticides, read labels carefully and follow all precautions. This not only will insure personal safety, but will also elimi- nate insecticide residue hazards. KEKE E* This weekly report was prepared by H. B. Petty, Illinois Agricultural Extension Service and Illinois Natural History Survey, in cooperation with the USDA Agri- cultural Service, Plant Pest Control Branch, from information gathered by ento- mologists and cooperators who send in weekly reports from their own localities. Homi as Los yrot esdoat xia are “ooo “rsbo siavosc seed aed roltetugog ps ions ed Ifiw evesb awkt os ~aosd at snoigqgexot sosereng @: balbase of $ adasgeb Soden aidd to aeenevitootte | tet aay to mafdarg end sted .tedsinitaad ary | sau et caddirmiosd to eayt tediy artmesseh of YELL dsyindeor od tama aveddirlosd .Ssdas0l ylrage et alamtias seeegioke fom ob yanenge Gexot gaien od sidluass wilct bos yilvtsiso alsce! beox sabinitesas! stb eititia nafs {fiw dud ototes Isnvarsq oryeni ae NH HY & ro hesedsad tout teoles, A utoukiIl ysded .& .H <3 wings ATED odd tor sogdetedoos ak .yerige nee Le > oe Yd Sexsiieg aolteamrotar mowt . fongd foudaod ta0d teat £90 eeahdiieool avo thoy mor etuegey viklesw ai Base oilw erodsieqco?” aI. Ie FOR IMMEDIATE RELEASE August 16, 1961 INSECT SURVEY BULLETIN NO. 18 This weekly bulletin will be the last one of the season unless insect con- ditions warrant further ones. These bulletins have been prepared by entomologists of the Illinois Natural History Survey, University of Illinois College of Agricul- .ture and cooperating agencies. They are designed to forewarn people in Illinois of impending changes in insect activity and to suggest abbreviated control measures. These reports indicate only general trends. Each individual should check his own fields to determine local conditions. Grasshopper damage is more apparent in the northern half of the state than in the southern half. Defoliation of corn, soybeans and clover in the northern half of Illinois was noticeable this week even from the roadsides. The ‘hoppers are now migrating from hay crop fields, pastures and unused areas to soybeans and corn. Mi- grations and damage will continue for two or three more weeks. To control ‘hoppers in beans and corn, apply 1 1/2 pounds of toxaphene or 1/8 pound of dieldrin per acre. Allow 40 days to elapse between application of dieldrin and harvest of beans and corn as grain. Do not use treated plants as hay, ensilage or stover for dairy animals or animals being finished for slaughter. If a band or border is to be sprayed on the margin of a field and the fencerow to control the migrating ‘hoppers, increase the dieldrin rate to 1/4 pound per acre. If they are beginning to migrate from unused areas (reserve acres, road- sides, ditchbanks, etc.), apply dieldrin, toxaphene, heptachlor or aldrin to then. If ‘hoppers are still in uncut hay fields, apply 1 pound of malathion per acre and allow one week to elapse between treatment and harvest or pasture. If this is not desirable, cut the crop but leave one or two mower widths uncut. The grass- hoppers will tend to concentrate in these areas, which can then be sprayed with any of the insecticides. However, do not use this strip for hay or pasture - discard it. Webworms may attack fall-seeded alfalfa. In severe infestations the small seedlings may be killed. If the worms are numerous and damaging plants, apply 1 1/2 pounds of DDT or toxaphene per acre before webbing becomes general. Do not use for hay or pasture this fall. Spittlebugs and clover leaf weevils that attack hay crops in the spring can be controlled now. Applications of DDT or lindane made between September 1 and 10 will kill adults before they lay their eggs. Do not use for hay or pasture this fall. Face flies vary greatly in number from locality to locality and even from herd to herd. They may become even more numerous during the next several weeks. Continue to use DDVP face fly baits daily or as needed on animals that can be handled. For non-dairy animals that cannot be handled individually, backrubbers with 5% toxaphene have been giving some relief from face fly attack when the animals on pasture use them. Where the flies are not being controlled in this way, the only solution may be to bring the cattle into dry lot and haul feed to them. See that the animals have access to the darkest areas in the barn. Spray posts, board fences, the sides of the barns and loafing sheds with diazinon or ronnel. Have a backrubber A0@L GL -tasguA SeARIGA GOA MMT 208 Of .OM WMEIUe YEWTUe TOmeMT to ono ten sdt od Lib nivel lud yitesw ekst } aved anitel fod oped? .aeno vodduyi pute ie ano 1) aboahily * Yietevialu .yevaue yiotalll farudell 2 ag atewevol o¢ Baagiueb ox yout mageicies ant ee Bp ore gear tasguie od Beis gent uh aexusdo Bayes: Siueda Jeubivibak dost sabrett Le SSMS asia tnok! oii etsoges at sasckrbbace Leoul auienetab of ab, etom ak oxsmab secnadesest a N fo aukverlozet saabbabsct ogt geo neyes deew ebrs eldasoidon acw ato yon ot Seavey bae aervsiaag ,ebielt qoxo yed mort Be gion mM esidt ro oF sok ennttaoo [fiw egansd Boe anokreny 2 if rE Ut i Pay red poe id S 2 2.) = = ¥LG96 , gnesd gt oveggord' loxtnoo of - AD sae sODB “TOC akableth “ to Bavog 2) } Bie i dss minbfekh - | » to oxeliene | ma fuga, of mrs: a i ereeree mee ah egies Ss nT Sik 2 cea oO beyerge ed of ek reomad env . ae Cape a itn Bed ol nn fy ©, . nike -. Ts MOLI Se LO Yoo ab Lf adi L anugdesa xo ; 8 Svsmtasis neaied pege ts ofits boa estos . Syd qoup add duo yoddsule 2ab Son at : ifiw avegqod tosent sat to we deey es UHOCLOMNN Gis SiPlOW OfLF ZS eee ao SXHD to aluwvog effak acsht é Be 4d i a 2 RB ras z o Ss B Rr, Sade 1 fee SiiEN 3.502, Migeey yey aninoed vse te! Love of Saree iy Oi sen o¢ anmtdiod :; sb ae ah ia Cee honey tare, sp patie mT Sonn ay gd exo tand sclpunicesy Ap — Watered eof qaoxcad sdiw sey ouudveag oO Sahos eevee HAIVC Tea so Rropkh os ew h 4 DE re 5 ovmk od Od Vist 10 —— gael peraod tener Ye ‘ mead ate of: me deschver ark ad oz ) ! ef abe in the lot, as the animals are more likely to use it here than in the pasture, Allow 28 days to elapse between treatment with toxaphene and slaughter. Caution: Before applying insecticides, read labels carefully and follow all precautions. This not only will insure personal safety, but will also eliminate insecticide residue hazards. HHEKEKENRNX EK This weekly report was prepared by H. B. Petty, Illinois Agricultural Ex- tension Service and Illinois Natural History Survey, in cooperation with the USDA Agricultural Service, Plant Pest Control Branch, from information gathered by ento- mologists and cooperators who send in weekly reports from their own localities. HBP :mfb 8/18/61 as, . oo ' 2 EERE SHR RE ond auitpoisgé ehootlit ~ydied .& HT yd borage Sais ddiv ackieveqoos mi .yewued yrotel! ~ofas Yd bousdieg molsearnciak ao1d qt easiiifasol swo tkad? mot etrertey ¥. aay FOR IMMEDIATE RELEASE April 19, 1962 INSECT SURVEY BULLETIN No. 1 This is the first in a series of weekly bulletins on the general insect situation in Illinois (fruit insects excepted), prepared by entauologists of the University of Illinois College of Agriculture, Illinois Natural History Survey and cooperating agencies. It is designed to forewarn people of Illinois of impending changes in insect activity and suggest abbreviated control measures. These reports indicate only general trends. Each individual should check his own fields to deter- mine local conditions. Clover leaf weevils, which are small green worms with white stripes down their backs, can damage clover during a cool spring. Damage is usually most severe in fields with heavy trash cover, This year populations are higher in the central and western parts of the state than along the east side. Leaf feeding by these weevils was evident this past week. If feeding becomes severe and plants appear stunted, an application of mn 1/2 pounds of methoxychlor or 1/4 pound of lindane per acre will control these wee- vils. Allow 30 days to elapse between treatment and harvest or pasture when using lindane and 7 days when using methoxychlor. Pea aphids will present a problem in legume fields if weather remains cool. Low temperatures prevent development of natural enemies of aphids and retard plant growth. If an insecticide is required, the need should be apparent within two weeks. Use 1 pound of malathion, 1/4 pound of parathion or phosdrin or 1/8 pound of demeton per acre. Allow one week between treatment and harvest when using malathion, 1 day with phosdrin, 15 days with parathion and 21 days with demeton. Only one application of demeton can be made per cutting. Demeton, parathion and phosdrin should be applied only by an applicator experienced in handling toxic organic phosphates. Meadow maggots are the larvae of a large brown, ungainly looking fly called the crane fly. These maggots may be abundant in southern Illinois in legume fields with heavy trash. It is most likely that they are feeding in the low, wet areas on roots of sedges and grasses, not the legumes. Weed for control is questionable. European corn borer winter survival is about 75 percent, which is average. Face flies are now leaving hibernating areas and can be found on cattle. Although the count is low, we may expect more to appear during the next few weeks. The effect of this past winter on populations of these flies is not known. Therefore, dairymen should observe cattle during grazing and, when the face fly population reaches 5 per face, apply DDVP-sirup face fly bait each morning for about two weeks and thereafter as needed. Caution: Before applying insecticides, read the labels carefully and follow all precautions. This not only will insure personal safety, but will also eliminate insecticide residue hazards. RIESE This weekly report was prepared by H. B. Petty, Illinois Agricultural Extension Service and Illinois Natural History Survey, in cooperation with the USDA Agricultural Service, Plant Pest Control Branch, from information gathered by entomologists and cooperators who send in weekly reports from their own localities. GAOL .Of LhtqA SRSA Y ON WML YeyAle PONeWT sui SRORI Sh yard. wavetos 3 : OSES rok > sneqes Te 5 iy azody Uae a) Sausiveucis DRUENE et oy eblsir (wo 2 is {fame sys coitiw , Loog & alae “ay oLD “Sgennb MBS ay ald .tayon dasyt yvrseod Adhw abl fore asat cheds mod io adres ot visow deag etad toebh Pe Tass £0 aeph oF Tek gwhow evsb | ern vensemety | Leeann Th oo paeeser’ HITS Seer ey Pita (eS i. Sit ECA i apelin ce sSLIoy i 2 BOTA Fo: A j LOLS neers Hs ae } AS UMSH yf to aitbec ro cokdvereg Te basogq #\i gS esee Sen to hawog Lo: i i eore rat 4 wel wolf ,etos ted 2f ,ainbaodq ddiw j vey aotesteh to | oildas as yd Vino ee ee cree Sit fest ea ee a 7 am af Ah . +o wee si SH? Tom . ates ary we maf LW ToSDSG sate mnegtienen Sar ant stguodhen’ ! re daoths off rose ering reg ct esdoesy. sadtaovedt Bag. 5} pone rare, fohioeend eee sonra usosag Dis wolLot i sthertotte “BeLys Haro aA eae ee ag A Nh ate a~ Ln 7 FOR IMMEDIATE RELEASE April 27, 1962 INSECT SURVEY BULLETIN NO. 2 This is the second in a series of weekly bulletins on the general insect situation in Illinois (fruit insects excepted), prepared by entomologists of the University of Illinois College of Agriculture, Illinois Natural History Survey and cooperating agencies. It is designed to forewarn people in Illinois of impending changes in insect activity and to suggest abbreviated control measures, These re- ports indicate cnly general trends. Each individual should check his own fields to determine local conditions. Clover leaf weevil populations are not generally high, but occasional fields of clover are showing some damage. Most of these green worms are about one- third to one-half grown and can be found under trash on the ground; some very small ones may be hiding in the crown of the plant or behind leaf sheaths. These insects feed at night. Examine slow-growing clover fields, particularly those with heavy trash cover in the . northern-half of the state. Such fields may have some damage, but there is an excellent chance that warm weather will enable the plants to oute grow most of it. For insecticide treatment, refer to spittle bugs. Spittle bug hatch began this week and will continue for the next week or two. Populations will be highest in the northern third of the state, Only fields with an average of one spittle bug nymph or more per stem will warrant treatment. If control measures are needed for clover leaf weevil and spittle bugs, make applications within the next week or ten days for best results. Apply 1 pound of methoxychlor or one-fourth pound of lindane. Allow one week to elapse between application of methoxychlor and harvest of hay or use as pasture, and 23 days with lindane. Pea aphid populations are not yet very high. Lady beetles feed on aphids, and tiny wasps also parasitize them. A fungus disease, most prevalent during warm, humid weather, also kills many aphids. Warm, wet weather favors rapid increase of these naturally occurring aphid enemies. If we have either cool or warm, dry weather, these aphids could become abundant during the next three weeks. Buildup may occur on alfalfa within the next week to ten days in southern Illinois, and about a week later in the north. Insecticide applications, when necessary, should be made before severe wilting and discoloration of plants. Use 1 pound of malathion, 1/4 pound of para- thion or phosdrin or 1/8 pound of demeton per acre. Allow one week between treat~ ment and harvest when using malathion, 1 day with phosdrin, 15 days with parathion, and 21 days with demeton. Only one application of demeton can be made per cutting. Demeton, parathion, and phosdrin should be applied only by an applicator experienced in handling toxic organic phosphates. Face flies are generally present in small numbers on herds of cattle throughout the northern three-fourths of Illinois. Female flies are laying eggs that will produce the first buildup of flies for the summer months. Dairymen should be- gin baiting programs immediately, brushing DDVP in corn sirup on the foreheads of cattle. Beef producers having cattle on pasture should keep backrubbers well satu- rated with 5% toxaphene in oil. Allow 30 days to elapse between application of toxaphene on beef cattle and slaughter. Toxaphene cannot be used on dairy cattle. a TT 5 ree > we ¥¥, LS £ relied yideow To oie S it ae soyeng (Sodqeoxs a adt ar c ate +, iD feey Peres near STG. eAOLS —_ : = rar gic Hoscdo HSiuodea Teubivt Livsew Tsoi sgvo. £9 Ne com tem ee aa Pods oS “reverts to Bar bs ets enorgetou ies BRP TOL fe at exon ‘fue | to dom wor iy sacisateqol sows agarsye aa ddiw "eID wih ae phibas ifcas salam .sasdrit sw yotd Bas raritsew Biawd oh tusbaude meu o¢ desw anne Le r 1c nokdt TE ayeed Ae dase gyiv syeb TS bop. Jiidtersa . socom savod porliosd ay an PSLSE ae sushi ane net cretéron oft guedysonds | Poet? eft souhorq Ifthe exiosg Raidied fp eiesuboug teed ,sidiso ouada@exod <2 sidiw bets fo smeligexot siddes IS SALAD te ee mI EO > eo Liotta to. xorifent to sofseotiqas . oon Caution: Before applying insecticides, read the labels carefully and follow all precautions. This not only will insure personal safety, but will also eliminate insecticide residue hazards. FORE This weekly report was prepared by H. B. Petty, Illinois Agricultural Extension Service and Illinois Natural History Survey, in cooperetion with the USDA Agricultural Service, Plant Pest Control Branch, from information gathered by entomologists and cooperators who send in weekly reports from their own localities. HBP :ml 4/27/62 bkpdiuemigh ascaeuet guttet A Hd Senne. Sue Rely goteovegooa Bi gowns quotas Care ud voterideg noldemvelot moet. Soneut fomsn08 ve elehigeol imo aledd mol adaoces yoliaw aE pees ook Tw7 FOR IMMEDIATE RELEASE May 4, 1962 INSECT SURVEY BULLETIN NO. 3 This is the third in a series of weekly bulletins on the general insect situation in Illinois (fruit insects excepted), prepared by entomologists of the University of Illinois College of Agriculture, Illinois Natural History Survey and cooperating agencies. These reports indicate only general trends. Check your own fields to determine local conditions. Small spittlebugs were found this week in extreme northern Dllinois. Ex- amine fields of clover and alfalfa for these tiny yellow insects. Examine stems and look closely behindleaf sheaths. If the average is at least 1 nymph per stem, con- sider using insecticides if you need all the hay you can produce. One spittlebug per stem reduces yields of dry hay by 200 to 300 pounds peracre. The higher the spit- tlebugcount, the greater the expected loss. If you are planning to control spittlebugs, this is the week to apply in- secticides. If control is necessary, apply 1 pound of methoxychlor or 1/4 pound of lindane per acre. Allow one week between application of methoxychlor and harvest as hay or pasture, and 28 days with lindane. Clover leaf weevil can be controlled with the same insecticides used for spittlebugs. Pea aphid population may build up but, with the moisture now generally present, warm weather may favor a fungus disease that will kill the aphids. For the next few weeks check legume fields for these small, green, soft-bodied insects. If chemical control becomes necessary, apply 1 pound of malathion, 1/4 pound of parathion or phosdrin or 1/8 pound of demeton per acre before severe wilting and discoloration of plants occur. Allow 1 week between treatment and harvest when using malathion, 1 day with phosdrin, 15 days with parathion, and 21 days with demeton. Only one application of demeton can be made per cutting. Demeton, parathion and phosdrin should be applied only by an applicator experienced in handling toxic organic phos- phates, Sweet clover weevil may attack new seedings within the next few weeks. New stands of small plants can disappear within a few days when these insects migrate from last year's fields which are now being plowed. If these gray weevils are notch- ing the leaves and in many instances entirely consuming the tender plants, apply ae 1/2 pounds of DDT per acre. Do not graze dairy animals or animals being finished for slaughter on DDT-treated fields. Do not treat after small grains begin to form heads. Use of soil insecticides on corn ground apparently is going to increase greatly this year. If you are applying the material broadcast, disk it in immediately now that daytime temperatures are commonly above 60°. This prompt disking will min- imize the loss of chemical by volatility. Stored grain insect control can start now. Whenever the opportunity pre- sents itself from now until grain harvest, sweep out the bins and clean up grain refuse around storage areas. Use a residual bin spray of 2 1/2% methoxychlor or 1 1/2% premium-grade malathion. Spray to run-off. Early treatment will provide best control. Z 0 HI 4 ° oper s: & xe A EcNQ Sate =0% rep ~ soy, Hoty orantact aren t se ’ SoTL none ' a pi Ly Ss Ps iw = ab Bee Z gis os + seat Say Se aed . mg pie | 7 . = yoo v i i ase . 3, i i 1 Fo it: - - Cadi sie ad Sade. ac kl 7 cae ' TES TP yeh EA : oe raoaat dint} etoni{il ak gobs 2 o agolle? elexELit To ye U . pone wp ~ seen? .astonens aoe 4 niexte 2 has -isvolo te ableit eskiss -envesds taet batded ylosofo doolt som Moy It aentsoitoeant gates aebta ma var web In sifLety feet = ssyonese¢ aSngerc on 2 wry : a week vars ° } er al ioutnos mas flea teal. wewoild wySseg : ee TS eae » Eb Bebo addy -ek sid fon Lescol satunereh, ‘oF ma Lod tee Lise Sf 45) Mie. any rovearg odk , daewoo: wie THIS ebkoltoss - oe? s8tse Yer smebshl S Dae .exutasq mo aa perenne eee rameter Se es Tree ee tee od nude lod tor & LOR Badge $83 sovet: van Lontosw wyaw ,dregsry ‘Hoary atoew wet dyen . sed “ouvnos Isatmedo oe “0 aivbeodg to zone singia Fo Looy y cttw ayveh 2f eres ong ditw yab é ry ff e moiteo ke } 93:2 teat sere av acd YETSTR quia osityab ugg Won tiset ate ae 10 yad as das ‘she pe Ped ait, ; pce outs eke Hh at eu a x = Siaveag avoted svsa vee ocbeset & mo Coy ST RURS i ‘Bg ae - spa seal 5 ad Bivede a paler Sea aed ecreody ii ey. “ sion oud ons oO SBUGOSS fs BOS. HOG Te af ged pb tatiwa to @ "ing oe asytae Liwogs Bee) naont fag roa he a eget weiss ef FE .etneste go Deurcth ay ‘ SeReNe erat te sgromemnd 7 am qout .yayewoHl: aad gelyel eee 3 yvsod _ 2 to edeworg Ager BEEIBIN j to dost, jean Pro eer — Beagreny BE sbubiesh Agiv éxom A SG x er 2a ere enidtsw oo eaea- 4 KL MSE Of od Canaabilatal cs tape peer ip bs) astnie pears OHO? 729 edlé BE Je Eosoary etoihr mabiae: GAL artbost ous 7 Svea a'is2t fio aed i. ae sbevesedy roioe veg XE to "Rese a, J oe 7 HG Wart APsgat SSiSceesplew a2ote Vita Bas ares ene tay Sovontn wlarsraa ote ca ‘oeaend aé hers nh tte YOLeSeP ol VISE at pyle setosa ale alfalfa fields in a triangular area from St. Louis to Quincy to Springfield. Watch second~growth alfalfa, and if these green gnat-like insects are noticeably abundant, apply 1 pound of methoxychlor or 1 pound of malathion per acre. Allow one week between treatment and harvest as hay or pasture. Bagworms are hatching in many areas of the state. Small bagworms are readily controlled, but as they grow larger they become increasingly difficult to kill. For a spray, use 2 teaspoons of malathion emulsifiable concentrate, 3 tea- spoons of toxaphene concentrate, or 1 tablespoon of lead arsenate per gallon of water. Do not apply malathion to Cannart juniper. Mimosa webworms are present in southern Illinois and are feeding on mimosa and honey locust. Use a spray of 1 tablespoon of lead arsenate per gallon of water. Repeat applications may be necessary during the summer. Caution: Before applying insecticides, read the labels carefully and follow all precautions. This not only will insure personal safety, but will also eliminate insecticide residue hazards. SHH This weekly report was prepared by H. B. Petty, Illinois Agricultural Extension Service and Illinois Natural History Survey, in cooperation with the USDA Agricultural Research Service, Plant Pest Control Branch, from information gathered by entomologists and cooperators who send in weekly reports from their own localities. = nalieg ed ohne eee? Sec Bes bes Shays ke arkbsst ct Boe elem hif] avedtoor oe Grasetg ote 2 twee eo aeliey vor erasers Beer to. sooqesides 8a yecge. fen Mememeae sabiab gwredunnde | pau as fsSaise nueded adi SG gabloiinoar!. acl «igen orate oaks one Jed yore han fpententd my ae Lrap-ygion om ate regeng ss pid bor Bey e et : paint Sh i Intudisowigé shee tiit .vete) .& .W yo be sew drogst yd Sat aii anhatqoce Gt See erode Le Lay: -aseuehth J aby fisted ioe? .totan) Dowised gas? analy. tutes: ens ehact qirte adidas wise iE sive ody ayotausgues Ree 226 a oh ds te atv i FOR DIATE RELEASE June 1, 1962 INSECT SURVEY BULLETIN NO. 7 These weekly bulletins, prepared by entomologists of the University of Illinois College of Agriculture, Illinois Natural History Survey and cooperating agencies, report general trends in insect populations in Illinois (fruit insects excepted). Check your own fields to determine local conditions. Grasshoppers may become our most serious field crop insect pest of 1962. Hatch is progressing rapidly in the southyhalfyef Ilinois, particularly along the east side, and will very likely occur throughout much of northern Illinois within the next few weeks. Although rains of the pagt week ‘may have killed some of the small "hoppers that had already hatched, there are. e enty more yet to hatch. WME RORY if hi Ge ViviVietoiiy & Last fall, adult grasshoppers apparently laid eggs not only in roadsides, ditch banks, grass waterways and similar areas, but in alfalfa and clover fields as well, and small "hoppers are present over entire hay fields. In some instances, corn or soybeans planted on sod are evenly infested throughout the entire field. Also, this week small grasshoppers began migrating from fence rows into marginal rows of beans and corn. Apply 1/8 lb. of dieldrin or 1 1/2 lb. of toxaphene to fence rows, ditch banks, roadsides, diverted acres and similar areas where the crop will not be grazed or used as hay for dairy animals or livestock fattening for slaughter. Dieldrin, 1 OZe, or toxaphene, 1 1/2 lb. per acre, can be used on corn or soybeans where necessary. Check hay fields for grasshoppers. If there are six or more ‘hoppers per square yard, plan to treat soon. If possible, cut the crop ana spray fence rows and new growth right away. For hay crops, use 1 1b. of malathion or 3/4 lb. of Sevin per acre. Allow one week to elapse between application of malathion and grazing or cutting. No interval is required with Sevin. Diazinon can be used on alfalfa only, at We Wiss per acre, with a 7-day interval between application and harvest. Dibrom, a com- paratively new insecticide, can be used on alfalfa or red clover hay or pasture. Allow 4 days to elapse between treatment and harvest. Above all, be aware of the possibility of grasshoppers. Control them while they are small and easily killed and before they migrate over the entire farm and do considerable damage. Black cutworms damaged cornfields this past week in western and eastern Tllinois, and more spotted damage will probably occur this week. These insects are usually a problem in low spots in corn fields, as the moths prefer to lay their eggs in wet spots. The worms, after cutting the corn in these places, migrate into the rest of the field. Oftentimes infestations may be spotted over the entire field. If the stand is worth saving, apply 1/2 lb. of dieldrin, 1/4 pound of endrin or 3 pounds of toxaphene per acre; use as much water per acre as possible. Con- centrate the spray at the base of the plants. Cultivate right away, throwing dirt into the row on top of the sprayed strip. If replanting is necessary, broadcast, prior to planting, no less than 2 lb. of aldrin or heptachlor (preferably 3) or 1 1b. of dieldrin, and disk in immediately. THE LIBRARY GF THE JUN ~4 1962 UNIVERSITY fiF ALLAN AIS Socal fl onudts : ‘on ylcetetind edd fo ete boolean grisis,s 38 Doe vewan wed oi a Si. atseunt clot) aboatiit at anoktelwqne - sowemt wh eis. winvigtisos Lasol encamideh os vhs “a0 Sere clog Yo tesa toverr gow igh seoivea daom ae ssmaed ¢ Se? DAOLS (iialesedsae aye cas, 3 cad Hasna sid ar 4 mb tiw BROMPEL ED TRS ddgos o dis ee sry = ae edd “to emor ollie awa yor teew. crag oy io anket # intel oF dev eyort ae in ae are e esberast yoant is er Je Pipe aus, wate en eos, r BS Bey oo BaP wy aoe % gota magia aveggadsees dvb fees 4% ubiskt sevots fyus st0elie nt ined , 800TH Sac hmrs Oris BME ePRSMaRteny sos et wahield wes grehstire “ay ot pote cind re bs a sh(SER ootius ens dwatgeorddt Bedesink efance fi fastayier odat -geod aorngtt mest anrks Minko | ess gett Ye dL SVE £ to pine: te at OVC Devas ol oct aren Beane we fistke bee pores Hageorse i oe wha mittiatea® Asotaeyal to alseiag at +TUSaSoeN ake sx i "0 Ateo ny heer od GRO .evToR “ee ech S Sodio lows imagenes, Or gifeht eS Se eee Te xe ean ak Fe, “ Aur a emp e aay? acet wackie bie Gots tt deo ~sidragoe ane 1 ARETE yatta teighy a! Te sche OL ei eros yer soe : reakoh oie! Lae ires gagele oF o ate Bextuges eb i a Coon Bitsy eeu a meres web-T & Ad bw hee to Gist as in Bese td ots ,altokdoeank wee wy Meat pla Teahiear sesaed sbaete at Lepat rete Gl de + “i 2h Sorc us foe it . lettoge evar Aes abo i are 1 estore 3 & ylides athe) an POSES arts, peo ake cats a EP Sur oad YEM ANS nse BOI oee | ae ce arid: to SiGe hs Risk? Bs haar af Baste ect 4E SN, ow

ee v - ks a — _ a wel Serer Pe SEH si | “id 2 wat to ots arenes a or dn fi ce lear tea #é0eeeeued ohh abeabis? geet 8 4k i dotaqeg betsy In FOR IMMEDIATE RELEASE June 15, 1962 INSECT SURVEY BULLETIN NO. 9 These weekly bulletins, prepared by entomologists of the University of Illinois College of Agriculture, Illinois Natural History Survey and cooperating agencies, report general trends in insect populations in Dlinois (fruit insects excepted). Check your own fields to determine local conditions. Grasshoppers: The situation remains spotted, varying greatly from one locality to another, and requires separate evaluations. Here are some general field observations: A correction on last week's bulletin: Grasshoppers are abundant in southern Illinois. Although infestations are not so general there as in other areas of the state, the problem apparently is severe where they are present. Hatch from overwintering eggs is probably near an end in south and south- central Illinois, is still going on in central Tllinois and has just started in northern Illinois. Hard, beating rains during the next 10 days may help to control the small grasshoppers. No evidence of grasshopper diseases has been seen. Hard rains a week ago probably killed many ‘hoppers, making the infesta- tion more spotted and difficult to outline. In many areas grasshoppers are still very small and difficult to see. Close examination is required to detect them. Grasshoppers were abundant in soybean fields in many places last August and September, and in some cases deposited eggs there. Sma2l ‘hoppers are now feeding on crops planted in these fields. Noticeable feeding and damage were ob- served this week in both soybeans and corn following soybeans. Grasshoppers are now hatching in hay fields where the first cutting has been removed and the second growth is several inches tall. They will remain until the second crop is cut and then migrate to adjacent crops. In many localities, roadsides, fence rows, grass waterways, ditch banks, and similar areas have high concentrations of small grasshoppers that are migrating now into field margins of soybeans, corn and new seedings. Applying chemicals when grasshoppers are small provides better control with less chemical than when treatments are made later. If small ‘hoppers are extremely numerous in diverted acres, fence rows, ditch banks, grass waterways, roadsides, and similar areas, apply 1/8 lb. of dieldrin or i 1/2 1b. of toxaphene to areas that will not be grazed or used as hay for dairy animals or livestock fattening for slaughter. Aldrin or heptachlor can also be used in these areas at 1/4 lb. per acre. If treating hay crops or pastures, use 1 lb. of malathion or 3/4 to 1 1/2 lb. of Sevin. (From now on,the rate of Sevin depends on the size of the grasshoppers. ) Allow one week to elapse between application of malathion and grazing or cutting. No interval is required with Sevin. Diazinon can be used on alfalfa only, at 1/2 lb. per acre, with a [7-day interval between application and harvest. Dibrom, a comparatively new insecticide, can be used on alfalfa or red clover hay or pasture. Alicw 4 days to elapse between treatment and harvest. THE LIBRARY OF THE TIA 44 O A4NRnAD Sor ef oni 2 ew SISEUA Wr come fo yslesevisU oft lo ateasgodomitsea yf Betoce wy .eslietind yhisew nikteregsos Bas vevinh yiedail code abontf{t ,osiivottpA to » dosent tixa}) 2ioasifl ai sinottelugog fosent ab ebisit Leisasy ,anoitinivos isool ontmredeh od ablsi.. mo ws9y aco mort Yldsoss wakyasy ,bestege asteusx ucts souchhe ant biek? Lezesom onion oye syeh -sioivculsve etterecss eorhipes fi ai gashayce ots eveggeragssD :onveliod etideew vesl ao agitoevioe afers datv. 1* a6 gueds feveaneg of dos cas enoliatesiar davontl: 2 korrd Ameaeng sis yotld avedy sveves ex vidnowsgr> gsidoog oft 8 ~“H7LC8 O82 OSes HE ine se usen yfdedoig of eas Anigedatiereve mova a ay ak Debesde teat end bie wham blll fevigee wk go aebos Liiva ot aed ioigeus od qied sit ayeh ol trem adit getuob ember quidesd bis ns tombed “nese gee” ail usasoeth neggotsemyg To eosohive oli .ategqudsesiy wOEOuIse ait aeinish ~ataond? yoem baiiie vwidedord ops aay < seakisue od dfysiPEi : oe meyreereens 5 wo th ao o¢ Sisohtics San fits weey Cleve age axeagoriaess 4 SHSts yous ot | *8oa7 tastes cf Hoicupes es he ml gapauA geal qacaiy yom mi eSisi: meedvon al ceabneds szew eusececl won see eisedod’ Clem .sysid sage Eetiecesh aeaen smoe 22 hoe oo oditg “2 aiov suaneh fins pitheet sides ical, suiess geet ot Sedeale ances senmedyas ‘parvotig? thas Ses ausscys © wd Be ses F “iit Bibi doskl, sdo o cost efor: waa at : sheet Wen ave maegqey ceaest Scorer aims £15; Liat saugedt Decovee. al uswoTy Secce: edly Joe B: v ONS"s myscajbe o¢ average ged? oie duo el qors 3 Jaatned .AWer sous? gshinksoy vnorhiteon£ yma ee Hae aeain a3 ficze Ssetterigsconss dain oval assre tSitwk : ‘epeen mee Suk ation .e@ceadgos so euigsam Bfeit ata core: sattad asbivwerg ifea? sre eseqworlatisng oery oieokteda caer one! pote Si. etnentesis asic gene fT ct (2es Soe) .eete foes Lo Sh enonenum wlaietime cur oe Sisme Ta he woh OMS vines teu vatinke Aes rks 1p: sfovga gaa 9 Siegen Jo Lilet Lett int mr oe ivey Beas 29 ast Desk yatta 23 iw foe used sad fons Siero") il PERE Bo sirh Ma PE Hevwerto ayow | Ba ie: ST 7 am Jan fay Sey Bhoge qa tye , ite BS Based ke Sftedte -eusodeoe Sd Sueas Te ge sk cabal i Ro caw. ose JsLinn sip. voy 2a gaidont Eee’ asits staf sede? eh syne ied Aad .eo978 Vane oF soueator || amen ener fe ent tat 8 ooh ey Herel gl SSM hoy tek eyed bai tg toldesed opel Bache re a) Vere 3 ; Sat tae gd Frau? ws tide =S00 "He 220s Verge «8 eee odie nee Nod’ asitlione: bah aggmile 7& SoeF eae heey yt aye Keep gardeus and berry patches free of overripe and rotting fruits and vegetables. Preventing injury from other insects will help to reduce the numbers of these pests on vegetable and fruit farms. Sprays of sevin, diazinon or malathion help to control them, but it may be necessary to make repeated applications as beetles migrate intothe area, Follow the labels oncontainers for rate of application and interval between treatment and harvest. An 0.1 percent pyrethrin spray can be used as a quick knockdown spray at picnics or cookouts. The mimosa webworms, which are gray to brown worms, are making nests and beginning to skeletonize leaves of mimosa and honey locust in the southern two-thirds of Illinois. A second generation is expected to develop during the next two months. If treatment is needed, mix a spray containing 2 teaspoons of 50=57% malathion, or 60% toxaphene, or 1 tablespoon of lead arsenate per gallon of water. Combining mal- athion and lead arsenate has proved very effective in controlling this pest. Face fly populations are increasing noticeably in the northern two-thirds of the state. Observe cattle on pasture between 10 a.m. and 4 p.m, on clear days to see how numerous these flies are. The problem can be expected to worsen during succeeding weeks. For dairy cattle. Brush 0.2% DDVP in corn syrup on the foreheads each morning. Use a DDVP concentrate and mix with corn syrup as needed. Commercial ready-to-use baits may be ineffective. Dairymen who wish to try a new remedy for face flies should obtain a 2.0% Ciodrin oil solution. Apply at the rate of 1 to 2 ounces per animal as needed, but 2 to 3 applications per week should be adequate. Ciodrin has federal label approval for use on dairy and beef cattle. For beef cattle, Use a rubbing device, preferably constructed of cloth, burlap or canvas, and keep it well saturated with a 5.0% toxaphene-oil solution. Locate these devices surrounding salt, mineral or watering units to insure their use. 2.0% Ciodrin in oil can also be used on beef cattle conveniently from an automatic sprayer. Apply 1 to 2 ounces per animal 2 to 3 times per week. Allow 30 days to elapse between treatment and slaughter when using toxaphene. Salt blocks, mineral supplements or other feeds containing either pheno- thiazine or ronnel are not recommended for face fly control even though they may give good control of horn flies. Even though ronnel, not phenothiazine, when fed to beef cattle in small amounts each day, will prevent face fly maggots from devel- oping in the manure, there will be just as many face fly adults on the cattle as pefore treatment because of migration from neighboring herds. Caution: Before applying insecticides, read the labels carefully and follow all precautions, This not only will insure personal safety, but will also eliminate insecticide residue hazards. For a list of general precautions to use when handling and applying pesti- cides, write to 280 Natural Resources Building, University of Illinois, Urbana, I1- linois, for "Safe Use of Pesticides," HK KK This weekly report was prepared by H, B. Petty and Steve Moore, Illinois Natural History Survey and Illinois College of Agriculture, in cooperation with the USDA Agricultural Service, Plant Pest Control Branch, from information gathered by entomologists and cooperators who send in weekly reports from their own localities, SM: ss 7/12/63 io Bein? amtied ‘Bee wpieneve fo pes gadiades: “rsod Adee ont hake Lone ett gouSoy Oo” glon Tar adeeane eocuhe mort wrutad sseidaevert eld ; nominee th Nerbbin to a “omest dinvt Bua sidatenov so advex sae ga aneldroetiags fetsscas saan ai ‘“neaasesa of yon gh dud ymene f favrdaoo iisenes ao Bisda, sade wotfolt 4 aE Henk ace rg bin ovis hae daa oot neevted Ls (oNeslors To sey To; aig Hicetis tusctag £40 aA * 7. setuoxoos coe if YSudR Avohvoors wotvp @ as beaxe od aro ¥ , Sarre cword of srs, oye told ,ausoy foie pecwl iar array “ - Jaroot vexed Aas aacmtin 2 goven, Satoru loke oF 4 fovel od Aadosgxna al solts.sqey faooss A 28d : . 2 i wim .nehean ak ae ogest dss —o aa) — (AKO wie Deol Bove is bs pie i a pet te aad BOL aT es (ef ee Se Qe Sites erie gd woreda | ad eet yaye teil? soact euceesm. wod ese, od casa gatbesvogs Brags pda yeh pe - PP sindtaent. Svde w ead oBihayog i gOVIT ESSE wie otf Sau adie a ead aO,8 2 sietdo Bt Wo ashlt sont ea Jouning eg asono iesobe'= asi sithoko So i OS Cites. WILOS gore fae ai 2) pa ae rae adhe on ANSeTg3 Lat tigo Sead aot! gona Bap eee: “0 galsud . . ronkveh oacdt steed ; y 3 «SRL obiesodee: eale od eyeb nin Lemon fo atbes odd | “Yo fontus 3008 ovia: eat oF eftiss Ised on. Be g Drees Die ict ot aehLtqo. 7) Oaunoa? Irani setd swoted vad Mt ie wolto® sAatoEF = sat abts ce 2. ma Su inife . ale whe gol ay sviuv sagas. elastin yeleb wel eauidted 1 eqous yer TOT 3 goons ps boy % sions at cade Dovdnos ri Hoow rs bd TA tp os, “ o os ou Sin to Boovga Ss _ ee: {ouuTesg . HSS TOL ei. tesy Jeavesn Bas poles = ! ‘ Peg = , ' 7 i gti era Aer ey Purl eth ' See rwel L ALI Ai 2 REIS Fahey De Sits % Res Sires! t oh Below ge aes ; Levsonias lw dombsos? pares up base bloby | ade Blister beetles are also common in alfalfa and clover fields. They are usually associated with grasshopper infestations, particularly those of the previ- ous year. Stable flies may become more bothersome to livestock in the near future, since the rains provide necessary moisture for successful survival of the stable fly maggots. The same can be said about house flies. For dairy cattle, apply 2.0% ciodrin, 1.0% DDVP or 0.1% pyrethrin ina mineral oil base. Spray at the rate of 1 to 2 ounces per animal per day or as often as needed. Be sure to spray the undersides and legs. For beef cattle, apply a 0.5% toxaphene water-diluted spray at 1 to e quarts per animal every three weeks. Allow 30 days to elapse between treatment and slaughter when using toxaphene. Thorough coverage of the animal is important for effective results. Ciodrin, 2.0% in oil, applied two or three times a week with an automatic sprayer can also be used effectively. Caution: Before applying insecticides, read the labels carefully and follow all precautions. This will not only insure personal safety, but will also eliminate insecticide residue hazards. | | For a list of general precautions to use when handling and applying pesticides, write to 280 Natural Resources Building, University of Illinois, Urbana, Illinois, for "Safe Use of Pesticides." *¥ Xe Ke KX He KK | This weekly report was prepared by H. B. Petty and Steve Moore, Illinois Natural History Survey and Illinois College of Agriculture, in cooperation with the USDA Agricultural Service, Plant Pest Control Branch, from information gathered by entomologists and cooperators who send in weekly reports from their own localities. HBP: kb 7/18/63 a a wis Wie .ehieth teveds Gris atietig at OIMEOS Oe a8 § wivery eff Te “Geode “seluoag geno lIeseerat Leqgorlees TulUd Boon oad at coadtasvil of emoaved? tod Syour amoosd ys eiteee tn: ‘to flavivura {yhersoase tot auycadon eYRRE809u obive “Silt emer piers bise ed aac Shisd —— Th. GL RG L — SO.8 qlagge Fae {a> bey nee 44! rs ieee a; OF Ek vag Dah . vt Jape Sanit i Pag -! - nm oye yeeros ies ak | pet ‘nota aledel sf fson ,aohieldseadt ecigtons oeotod as se Sua .ybshsa Lemosisg otubi tk ‘elt fo Jon ILlw aki .enati : we ; -ebipasd eubleot abiod arilhasd netly gen os 2 BO.LIU SIG LStSenss to gob s ale to utero isl ~antbl ies 22 SHR eel Loudalt “OBS os ain “ a seqblorvas% Ro eau atee” aor (ekoaee hase wtrate 4 wht “ be eQoiy apy SLOEOY nasa e sist 7 ' ui .suudign Inga to 93 Leo aiomtLil ans sewue sods tp fe pote cat welds - fiSut ionetdh Loxtacd:- gael dhait ,ootyise Cambie. F pO CBE! g MoTk sited: dalssy tt ‘bugs ote atodan, goose Bae ate : Seay 7: YOR IMMEDIATE RELEASE Joly 26, 1963 INSECT SURVEY BULLETIN NO. 15 This is the fifteenth in a series of weekly bulletins on the general insect situation in Illinois (fruit insects excepted), prepared by entomologists of the University of Illinois College of Agriculture, Illinois Natural History Survey and cooperating agencies. It is designed to forewarn people in Illinois of impending changes in insect activity and to suggest abbreviated control measures. These reports indicate only general trends. Each individual should check his own fields to determine local conditions. Grasshoppers have been hatching in hay crop fields for the past three weeks. Although dry weather this year delayed hatching of the overwintering eggs, most of them have now hatched. The rains of the past week did kill some of the small grasshoppers, but not enough to reduce the problem. Infestations are more common and grasshoppers are present in greater numbers in the northwestern area than elsewhere. Here the effects of their feed- ing on the growth of alfalfa and red clover, although just now appearing, will become progressively more apparent during the next two weeks. Not only will yields of hay be reduced in many fields, but the grasshoppers may migrate to corn and soy- beans either before or just as the hay is being cut. In many fields control now will save hay yields and can almost eliminate later migrations to corn and soybean fields. To avoid killing pollinating insects if alfalfa or clovers are in bloom, apply insecticides only in the late afternoon or early evening. If your sprayer has been used for 2,4-D, clean it out thoroughly before spraying legumes or soy- beans. For pasture or hay crops, apply 3/4 pound of sevin, 1 pound of malathion or 3/h pound of dibrom per acre. Sevin does not require any waiting period between application and grazing or cutting for hay, but with malathion allow a 7-day in- terval and with dibrom a 4-day interval. Diazinon may be used only on alfalfa, provided a 7-day waiting period is observed. For best results, apply in the late afternoon. These four insecticides are the only ones recommended for hay crops or pastures for dairy animals or livestock fattening for slaughter. Occasionally grasshoppers can be trapped into narrow uncut strips of clover or alfalfa and then sprayed, reducing the overall cost of materials. Leave a few uncut swaths around the margin of the field and one swath a rod or so wide through the center of the field. As you cut the remainder of the field, the 'hop- pers will concentrate in them. Then spray these uncut strips. If areas will not be grazed or used for hay, apply 1 to 2 ounces of dieidrin or 1 1/2 pounds of toxaphene per acre to control small ‘hoppers. For soybeans or corn for grain, use 1 to 2 ounces of dieldrin or 1 ij/2 pounds of toxaphene per acre. Allow 60 days to elapse between application of dieldrin and harvest. If corn or soybeans are to be used for ensilage, hay or pasture, use sevin or malathion with a 7-day interval between application and harvest. Diazinon can be used on ensilage corn with a 14-day interval between application and harvest. yi 29 88 ad ai. ait tye FOG Gia aUeie 2 Te to ydterovinl 3 2 ei tars S000 fd an AP 3 SOB “e e Pass an oo feodk cn eieiiahs od effort wc ahfst) goup yad ok msec ayrart 7 A a =, note lA .axeew af ment ‘to daom wyuuns don dud ,erecyodasary £ Lame oy boyvalen Bia ey ag E kaa Gedo QOsse 9k by nee: oe ook pee J awiideo$ cdg ni atedmuycst ‘ta iver odd Soomrk i wlevisaersotd smcvead si ai Scouser ad yed to 10 widls? wesitic saped r vad avee Lfiw - "ab Lert erege betee .eNgsw poids oat YWoges oh Qoed ¢ ead -anised x aut art spf JOG Re MAS Tae x “ Hey Ar ee cr Dine invise ole Pveo'ter - atte ast Fa By ag “a -2- Corn borer populations may increase noticeably this year in the area north end west of a line from Quincy to Bloomington to Rockford. First-generation numbers in this area are the highest since 1958, and most of these first-generation borers are pupating now to form a second generation; some moths have already ap- peared. Considering the increase in the first-generation population and the high percentage that are pupating, corn borers could very well be more numerous this fall than in any other year since 1955. The second generation is the one that causes ear drop in late corn. Moth emergence, which is one to two weeks earlier than in other years, varied from 5 to 20 percent this past week. These early emerging moths are search- ing for fields of corn in pretassel to early silk in which to deposit eggs. If they are unable to find fields in this stage, they will deposit eggs on any corn. Treatment of field corn to control second-generation borers is difficult. If 100 egg masses per hundred plants are present, an application of 1 pound cf actual DDT as granules will provide good control. Do not apply to fields to be used for livestock grazing or for ensilaege. Second-generation borers are a severe problem to growers of canning sweet corn. If egg mass counts reach 25 per 100 plants and the corn is 15 or more days from harvest, a control program should be started. Fieldmen should start examining fields immediately for corn borer egg masses. Caution: Before applying insecticides, read the labels carefully and follow all precautions. This not only will insure personal safety, but will also eliminate insecticide residue hazards. For a list of general precautions to use when handling and applying pesticides, write to 280 Natural Resources Building, University of Illinois, Urbana, Tllinois, for "Safe Use of Pesticides." Ke K EK HH This weekly report was prepared by H. B. Petty and Steve Moore, Illinois Natural History Survey and Illinois College of Agriculture, in cooperation with the USDA Agricultural Service, Plant Pest Control Branch, from information gathered by entomologists and cooperators who send in weekly reports from their own locali- ties. eevsey ‘rode a2 aertt telives ‘edsew oud of eno asf dokehe = isan sfogsa ata addon yotrrame tise seer ani? ae tae OP OS. ade SL .epge diveust of dedi af Mfin gluse of Jeaandorg i to a LOO Vite eo Sue tiaowet Liv ‘Gate weapte edd wt ablekt Sekt JHiuaitthe ab nroved moidareaen-Sancse foytios ot mos Alatt tor J a Bavog 1 ‘ia wuotiestiqge ae .tusaste ove sdaelg betoood m8 ad at ablelt ot Lage don of -ivitace boop ebiveng Lfis « ssncltese «ot to essen 2 ion! priisaso to wyswery oF meldoxy srevea « Sn stead ao b¥srastayebu 308 etom eo Ef ef moo oid Sue edneig COL -teg és adsues pum B52 th wtete Bloods semhiest .vacesds ad Biwode merRote Jetigos = .aJS8am Be Teu0d mtoo rot uisdatssaat wf Sus qG“ivietss aiedsl sit Gest .gohieltoaset: gatylors aretsa | sz vai {itv tod .gietes lencuvog oivea? {iw piso gen aiet senater, «shiessd eustses sbietongent . ariylone Sag gniliear cedw sav ot saoktucesie Ievensa To gall os sot : predil Btocklis io ysbarevied eBah bs iu sooavough Lertudall S89 o¢ otha gobi gq - “ sabloféaed to out’ sie@" sot ab . a sey efoutifl yovsoti avade, ins “lod .& .H yd ee asw dvoget ylhdéer aid? siti col tsistors nt yeseudLusiagad to “eget LoD etomtitz hes cd babedeie: beaesi 28 shiceacotnt great onerd Souda deat tacit .ooivase Tgaci wyo “leit aowl a trouvet vibleow «f bues odw axederoyooo fas @ Se ae | FOR IMMEDIATE RELEASE August 2, 1063 INSECT SURVEY BULLETIN NO. 16 This is the sixteenth in a series of weekly bulletins on the general insect situation in Illinois (fruit insects excepted), prepared by entomologists of the University of Illinois College of Agriculture, Illinois Natural History Survey and cooperating agencies. It is designed to forewarn people in Illinois of impending changes in insect activity and to suggest abbreviated control meas- ures. These reports indicate only general trends. Each individual should check his own fields to determine local conditions. Corn borer egg masses for a second generation are now being deposited in numbers, Over 90 percent of the first-generation borers have pupated in east, central, and northwestern Illinois; 25 to 75 percent of the moths have already emerged. In northeastern Illinois, pupation and emergence are somewhat later. In all areas except northeastern Illinois, egg-laying should reach its peak next week if nights are warm and calm, but some eggs will continue to be laid through mid- to late August. The moths will remainin the fields from which they emerged. and will deposit eggs in these fields for a short time. Then they will migrate to late- developing corn, where they will concentrate their egg-laying. Sweet corn canners should already have started a control program in late fields of corn, particularly those to be harvested after August 15. In field corn it is difficult to determine which fields will have enough infestation to profit from control. If there are 100 or more egg masses per 100 plants, treatment could be profitable. But do not treat corn that is to be used for ensilage. One pound of DDT per acre in the form of granules or 1 1/2 pounds as a ground spray should provide adequate control on corn to be harvested only as grain. One factor that may greatly affect egg-leying is a protozoan parasite that first appeared in Illinois in the early 1950s. In some fields we have found as high as 70 percent of the pupating first-generation borers infected by this parasite. Infected moths are often incapable of laying eggs or may lay infertile eggs. Fertile eggs from infected moths often produce borers that live only a short time. We are unable to assess the overall effect this disease may have on numbers of second=generation borers. Grasshoppers are still abundant in many hay fields in Illinois. The highest numbers of grasshoppers and the highest percentage of infested fields are in northwestern Illinois. Damage is apparent in some hay fields now. These grass- hoppers will migrate when the hay is cut. To avoid killing pollinating insects if alfalfa or clovers are in bloom, apply insecticides only in the late afternoon or early evening. If your sprayer has been used for 2,4=D, clean it out thoroughly before spraying legume or soybeans. For pasture or hay crops, apply 3/4 pound of sevin, 1 pound of malathion or 3/4 pound of dibrom per acre. Sevin does not require any waiting period between application and grazing or cutting for hay, but allow a 7-day interval with mala- thion and a 4-day interval with dibrom. Diazinon may be used only on alfalfa, oes oc aeioolio’g yitsew ge eohvee @ 6 aoe tsolomcige ud Lervsyeur gigetqaons edseest « Yritath femal stowslT ,~eustdyeiags Ic oesetes ‘ake BtantlEr af aloes mueweaotd on Semptess ar ob ne g “agent foxdco bedetverdés desgays at har. Laayid vented Hi 29 tomis Airoda tuubivtbat desd «aipent Lesenen: ino etavsbal ach sapoddibar 5 fgeel sabeatees Per dealin: pied wot @ts aortereseg Bnoiss & oct essesm see fosa nk Sotatvg sed exstod noldessneg-catte set To SasSisg | “agents ovad cites ede to dnouved CY os 8 qelontlit mredtsewiiuen $38 — jaiad iaevemoe vq eonsyrems Bis no Sega ekow key erodeeodiren ot desu seve edt dogs bigot safvat-ses .chorilit seataauieor picsiges feu uit ofel ed of oviimino Liat ange amos do? .aleo om itay Ste 2 argh 8 itiy Sue Domtens youd docce gest altace sosh ok ates Lit dioas ste of atevpin Lite ye aonT .eatt duede a tor ebielt sient ab a: auveiegns Thess sieninecncs Lite yr cred »y “o> 8 heiress idee yua oe Svcd Bute wes foowe “oa Sank Yodta ketesyaid of of seo wise idiiag erro to. ® j. m > an a] ive) ce tet ty i = be g Sioa svcd ciry Shere foie: Seirses oo PLT oh Pi eres Sieet oF ‘= COL Gee seeder ged Seem to OOF are grad? 42 .lossnoe tnt diteye of mek a 0908 ashopteierr ao Sines 2 psar er oF ei Sag! nton sesse tor on anu, Syl Lxors £3 Vee DIT aL YES hee was Bo set pily i Bios. s oat a * brtrog se) 5 a ut aubyeleges Poets “ise te yeu tags. hod eae. CAO Bo anna af 86 se0get yous! seit ni alogttil st homssgys tavkt Sueno io iderceces wtp etl. BESO RO Sef aay mo. tnsoger OF 88-42 2472 ant wal % = ideeunne feFte ote orton fetorin? 4s deone p give srt les? arviec sunherq aeiie. ailod jesastii ger eso slisaa® SUSGNNS 5 Ove YAO Subuetb alis testis Lisrnys sar nescas at -eigensy eta od cenh : -eyorod pc hignsnen-Broces Fo ine wees S ena: eg and Lom avotgedsasts to etedms veered saaaes “ear? vod Shee) See sie “seen 2) ommeen( .ehoabilh oat - duo Be Get sae ae sora se fihe eer .~erowely 1 @niset vet pagel AL Aicamoudie: Liiva ae suede eaen a . i ty Fee seeps + * 4 . ro MRL sh aes wie we to ieee. TS eeeseel aorta lo siti eet hogs. of THiigs “ey, ET api tiers Cites uo mtormeitg orel ed? af vine aubiedtooens ylgge | MLSOUQOH Ye Hse aniysres oeotod Vitievotess wae TD Gsebs Gail {3 0% Beey nosed ena ROLES So. iMag S prtves Be britog OV teen ais yaiouc sruvene yt SOWSS MGLESG Getic Win’ SSL Sor Baotou «ota ee Sees Te weir Oy tO “Piet Ge Layee Veo] © Welle: Fad yar ick wanda eo ankeses hte cores witie ks Eo Vile Dea So Sn Cease | Vemed, ke ntliy israaead enden = ji was provided a 7-day waiting period is observed. For best results, apply in the late afternoon. These four insecticides are the only ones recommended for hay crops or pastures for dairy animals or livestock fattening for slaughter. Occasionally grasshoppers can be trapped into narrow uncut strips of clover or alfalfa and then sprayed, reducing the overall cost of materials. Leave a few uncut swaths around the margin of the field and one swatch a rod or so wide through the center of the field. As you cut the remainder of the field, the ‘hoppers will concentrate in these strips of uncut hay. Then spray the uncut strips. If areas will not be grazed or used for hay, apply 1 to 2 ounces of dieldrin or 1 1/2 pounds of toxaphene per acre to control small ‘hoppers. For soybeans or corn for grain, use 1 to 2 ounces of dieldrin or 1 1/2 pounds of toxaphene per acre. Allow 60 days to elapse between application of dieldrin and harvest. If corn orsoybeans are to be used for ensilage, hay or pasture, use sevin or malathion with a 7-day interval between application and harvest. Diazinon can be used on ensilage corn with a li-day interval between application and harvest. Blister beetles, as reported a few weeks ago, are common in hay crop fields and soybean fields. In addition they are also eating weeds in corn fields. When grasshopper egg pods are abundant, as they were this past winter and spring, the larvae of blister beetles feed in them. This is the reason for the abundance of blister beetles this summer. Rarely is it necessary to control blister beetles, but in soybeans 1 1/2 pounds of toxaphene will control grasshoppers and noticeably reduce the number of blister beetles. In hay crop fields, dibron and sevin are reported to be effec- tive against blister beetles. Adult chinch bugs in late corn were also observed this week. Basal sprays of 1/4 pound of dieldrin or 1 fe to 2 pounds of toxaphene per acre will control them if they are numerous enough to be damaging. Fall armyworms have been observed in corn in pretassel. Several plants in an area are ragged from chewing. Infestations to date have not been significant, and control is not recommended. Another generation may infest ears in late August or early September, Sod webworm moths have been flying for several days. We apparently have had at least one generation of webworms thus far, and another generation will soon be here if it is not here already. Clipped brown spots in sod areas may be evidence of webworm feeding. Careful examination of the sod may reveal the silken tunnels or cases and possibly the worms themselves. | Several insecticides can be used to control webworms in lawns. Sevin, | 1/4 to 1/2 pound, diazinon, 1/4 pound, DDT, 1/8 pound, or dieldrin, 1/2 ounce, can be used for each 2500 square feet of surface. Where birds are extremely abundant, it would be best to use sevin. etal sit of dagud : egouy yee obermoen so ue set ts duct worse odet at ie cama 2 Raw ee any Shek oly aare ah: soon sch yeuge sod? syed Broa ‘ko S Srovaqnee ina toads of axes "pe snadganc! aaue : S\i £ to mitiferp to stone 9 of I ger Aotadplen To fe Died Se gNGov te ped ad oundeed « greene Fei | Be = ee Sens att aoe “rest ise% videoow Biv any mek, oat thn Eah to egeiic? sioaiitl sae verege paade rh Por t footed Lottno: deet dielt .ssinvwed Lata soir a a) hs flier epochs ee: Some Yitasy ri fuse ott evoistaqpen bus efarss > Sel: oe Lan T FOR IMMEDIATE RELEASE April 17, 1964 INSECT SURVEY BULLETIN No. 1 This is the first in a series of weekly bulletins on the general insect situation in Illinois (fruit insects excepted), prepared by entomologists of the Uni- versity of Illinois College or Agriculture, Illinois Natural History Survey and coop- erating agencies. It is designed to forewarn people in Illinois of impending changes in insect activity and to suggest abbreviated control measures. These reports indi- cate only general trends. Each individual should check his own fields to determine local conditions. European corn borer survival this past winter was normal in western Illinois but above normal in northern Illinois. With the low borer populations of the past few years, parasite numbers have also decreased noticeably. This decrease may have con- tributed to slightly higher borer survival this past winter. On the basis of this survival and the overwintering borer populations, farmers in the area north and east of a line from Rockford to Joliet to Quincy should plow stalks cleauly whenever pos- sible and disk thoroughly when not plowing. They should avoid early planting, pare ticularly on soils of high fertility, and use adapted hybrids or, if early planting is necessary, be sure to use a full-season hybrid. Clover leef weevil populations have been higher than normal in western Il- linois, but this past week of warmer weather may enable the plants to grow away trom any weevil damage. Furthermore, higher temperatures help to spread a fungus disease that kills these green worms. The worms feed at night and hivte in the ground trash during the day. Insecticides should be applied only when damage is extreme. Fungus flies will soon appear in wheat fields, particularly in wheat on soybean stubble. These flies are in the decaying orgauic material and do not feed on wheat. Sawfly larvae will probably appear in wheat fields during the next few weeks. Do not confuse these green to yellow velvety-appeering, almost transparent larvae, with the true armyworm, which is a striped worm. Armyworm moths have appeared in very low numbers this week. There is no indication of the extent of the flight. Caution: Before applying insecticides, read the labels carefully and follow all precautions. This not only will insure personal safety, but will also eliminxute insecticide residue hazards. Ke Xe KK HK *K This weekly report was prepared by H. B. Petty, Steve Moore and Clarence E. White, Illinois Natural History Survey and Illinois College of Agriculture, in co- operation with the USDA Agricultural Service, Plant Pest Control Branch, from infor- mation gathered by entomologists and cooperators who send in weekly reports from their own localities. THE LIBRARY QF Vik APR &@ \) 1964 AVUEGSITY HF AL LENOUS S800 ,\L LrrgA tooant Ievancn oft as anltolios yineow to asiven # at ibs rat «to eat 4 Soy emia “el ataqerq .{hotgests adesont $ egooo fre vayvesh ee senda pront ier st ivsbied t syaLled ati Qutivege: io etc iOfT nk efigosq memueadl of Songiesh eb JT ot pikevaree on ra csc instnos hadsivordds —— ad Sos “anaes of ebiekt mro afd deseo Bivods Lau vifat dust abut sioniiit pretase af Demin sal codetie Jacq shad Levivirs send a) ge fuer gi So acc tdeicooe tesod wel si GEY «erestil(rt mrsr ni 8G Vite Scene aba - MWiildrssiszon heaservsass cals a rc xf Le pha fst a) iteduikw teed Coit savivune tened saight + La oF tess Me PIS" rife Ste HL wiedest ~enoideGiost “sic esuinds buesvo. oat qs #aog Heyes G7 closets liste wote Sivots Yortins of Iekiol do bictivooh mog are? gtus. ele ~ “se ilove Bigods yeti sonivedg fom aciw yitavorodt 3 4 sitinsig yiwe i yro abivdgl Betgebe suy Ses ayibticrs’, daid ‘io altos go) sUPtg) Sougee~Lint & sen od give sw aks, maceer al Coton wads ge anne used pra gnolistvaog Livsow isa. : cj stusts silt sEdierts yen Geoveur esteay 2a deaw Jeng wie Sh7..05 @ fas (vi -S vled Beutereiwms Toeigl pesorcoida ey soneimad. Assis Bie. ym: 2+ '2 Ste gee oe Gost Garear ony) sinner es gaat * wensareo ui ac* oS sedy Eline Deliege ed Dtvode sebtokiasear keh eae 4 RG Beewte pl vlcstes ” Me pn Sleny Seater AE eeeeds. Goes Heat tee oD lite weit sam ofuogte “eatesed aie gk Sie = sGkeey wat iti sie pebeul abiralt veene of vesgage witedoty : Caves. sariewecess fisels ~ulreqeeyrearisy weiter ea Barras 3, © Crd Syeda? Wol WEayr ire boxes oveal oo instal yrs Ss cient a as ayy e Serer wi "| fee “iteterse asses «wile fae, ,penioniianst sdivigen cates sa: & inks COhe Lf Ti .yserse (amparsg seueif Clee viae ton cbat aplerakas onthe =D, 2 eS SB See Se Be ME RE ah soos ta Rae Se ob. ASS ered atl i ud Pocodeuq ame dyer “ie ecer : ib fa “iG, ME esti caren ceene sl to Seafood ] aa sf is) be | ra = % ae ee ery “\< FEGRaVE OF wy ay iB se odd ok Stist ah ms .doeenk abit eadade havin edt to f dena Dos obdO ak tasaetq — .boaue: atow snottedestat alton . Danesh tatoo Bomitomos a vets . TO HSsoD & .resy dasf Fi mt Dowsot sised overl aliveasW ee -sLsbiodtsd dees od olfivesnerywsl ' Bestgpebiw of ef soit - WoL os oye snotteLuqog moxi tfhorg ton Bivow oS dpvons eeasotont uidouborg ysd stistie eVilotdd ist acrasele afB%g N9OTy 2s adneag som ct y bonsenee 2ebaiw LOLIHOO ki TRMO ss “ctodd no Lie at witabots dviw bedseact Hosio at sost VELS QVOMST JOTS YEW LT wo tosant eds fos ywowrul ywrodekH Lexutell atonkify t oLgobwaA ATet chiw oLosodae i bore. Www OT ow / Lar 7 FOR IMMEDIATE RELEASE May 14, 1964 INSECT SURVEY BULLETIN NO. 5 This is the fifth in a series of weekly bulletins on the general insect situation in Illinois (fruit insects excepted), prepared by entomologists of the Uni- versity of Illinois College of Agriculture, Illinois Natural History Survey and co- operating agencies. It is designed to forewarn people in Illinois of impending changes in insect activity and to suggest abbreviated control measures. These re- ports indicate only general trends. Each individual should check his own fields to determine local conditions. Alfalfa weevils have now been found in the following counties: Pope, Har- din, Massac, Pulaski, Alexander, Union, Jackson, Johnson, Williamson, Franklin, Jef- ferson, White, Wayne, Wabash, Marion, Lawrence, Crawford and Jasper. Larvae have also been collected, and new adults should emerge in the most southern counties in three to four weeks. We are not recommending control measures at this time, since populations are extremely low. Potato leafhoppers appear to be more numerous than usual. Ordinarily there are at least two migratory flights of these tiny green wedge-shaped insects into I1- linois from the south. The first, which was heavier than normal this year, is com- plete. The magnitude of the second flight will determine the importance of leaf- hoppers for this year. Corn borer pupation is progressing rapidly. The overwintering borers are rapidly transforming into the torpedo-shaped pupae. Pupation is complete in southern Illinois; 40 percent of the borers have pupated in the south-central section, 25 per- cent in the central section, and 15 percent in the north-central section. The area in which borers could cause trouble this year lies west of a line from Rockford to Joliet and north of a line from Joliet to Pittsfield. Although some borers will be found readily in other areas of Illinois, control will not be profit- able. Armyworms may appear in luxuriant stands of small grains or grasses in southern Illinois. If you find six or more per linear foot of row, use toxaphene, 1 1/2 pounds, or dieldrin, 1/4 pound, per acre, for control in small grains. Allow one week to elapse between treatment and harvest for wheat and rye, but allow 14 days when toxaphene is used on barley. Do not feed treated forage to livestock. Variegated cutworms may be present in numbers in clover and alfalfa fields in southern Illinois. After the first crop is removed and before new growth starts, apply sevin or toxaphene if worms are devouring the new shoots. Toxaphene should not be applied to hay fields when growth is over four inches. Face flies are still not abundant on cattle, but questions are being asked about internal medication with phenothiazine and ronnel for control on beef cattle. These materials are mixed in feeds, mineral supplements, or salts. Their use greatly reduces the number of horn fly maggots, and ronnel also reduces face fly maggots in the fresh manure. Control of adult horn flies is satisfactory, since they do not mi- grate but stay right on the farm where they are produced. However, ie TemnA OE THES do migrate readily from one farm to another. Therefore, the use of ronne bade ce the number of face flies only a small percent. Feeding pee AY Lo faa will have no measurable effect on face fly populations. Neither of these two mate- rials is cleared for use on dairy cattle. WVERSITY GF ALLINGHS 2 0M UTEELIUE yETRue TomeUy & af AFLET sit at eine siongill ni nok aus : aROmLLet to) ° sn Lomodris rd iTivoLina To aa bao ju) = Ge ia ne } a ; eved alrvesw sitatra WLS onavelh wtiias tut seenall Te ha = 7 > eM aad ei Says Ser rey? STi eeu rediset ogaros ener eseeiaaca’ oleate gee. to adindt) yxroterain owd Fesal EN Jidioe ait mort ‘ os iLiw atex re 3 r se 8. syerinos pores paso S\L L wet 4 OF NBO SMO — fon ol AE 10 Exod sienw fivvovel Syne aryay De osatosx etm eee gu dan ra aaa: Gar eT | oh 38 ‘eyes ar Qin Ory Sra: “Ete wo af glare =p Pine needle scales are now hatching in central Illinois. The small scales are in the crawler stage and are susceptible to insecticide treatment. Tiny white spots on the needles are an indication of infestation. For control, use malathion, two applications at 10-day intervals, at the rate of 1 quart of 50-57 percent emulsion concentrate per 100 gallons of water. Caution: Before applying insecticides, read the labels carefully and fol- low all precautions. This not only will insure personal safety, but will also elini- nate insecticide residue hazards. KEKE KEK This weekly report was prepared by H. B. Petty, Steve Moore and C. EH. White, Tllinois Natural History Survey and Illinois College of Agriculture, in cooperation with the USDA Agricultural Service, Plant Pest Control Branch, from information gath- ered by entomologists and cooperators who send in weekly reports from their own lo- calities. | oe ee oelels [Liaski of? sehoabhia Lebear sik gadtiodat ston of odisw yakh sdioudsord sis ee ha! ‘ogo _ and da gotetroie Gas-O8 te. pastel te cs cud “eas et eae vides 246 anolten 00f taq admidsonries io. Uae fesatog vate fot bus ~liviscas eledal elt Last yasblatvoasut on betaies eae 9 chmtfo vais Sfiw dud .ydbbee Enoaege miisn® Tiiw vine gor as i oie sabuesail SEES eet vi (0 Bah peooll syede pyieT 2@ sll yd be days Ber drogen ef noltereqéos ai ,onnimingh 26 egal loo eiousit? Bad “fer iwe wroda dl ~Hees coigsmivzal mdt2 jHosaeS Lond) a3 E07 erie dstoig. “ol owe Aioee mock edusqey iivfeed di dnoa odw Edotets Ded iaatek ON eat Tu FOR IMMEDIATE RELEASE May 22, 1964 INSECT SURVEY BULLETIN No. 6 This is the sixth in a series of weekly bulletins on the general insect situation in Illinois (fruit insects excepted), prepared by entomologists of the Uni- versity of Illinois College of Agriculture, Illinois Natural History Survey and co- operating agencies. It is designed to forewarn people in Illinois of impending changes in insect activity and to suggest abbreviated control measures. These re- ports indicate only general trends. Each individual should check his own fields to determine local conditions. Armyworms are numerous in luxuriant stands of wheat, barley and rye. Most of the worms are about 1/2 to 2/3 grown in southern and southwestern Illinois, but have just hatched this past week in central and western Illinois. These small, newly- hatched worms stay close to the soil surface and are difficult to find since their feeding is slight. Larger worms may be found in grass pastures since moths lay their eggs here first. Do not confuse armyworms with sawfly larvae that are now also being found in grain fields. They are green to yellow, velvety, transparent-skinned larvae; true armyworms are striped and smooth-skinned. The unimportant sawfly larvae can be distinguished from armyworms by the number of abdominal prolegs, the fleshy legs on the underside of the abdomen. Sawflies have six or more pairs of these abdominal prolegs while the true armyworms have only four pairs. If there are six or more armyworms per linear foot of drill row, treatment is suggested. Apply insecticides when the worms are 1/2 to 3/4 inch long; 80% of their feeding damage will be done from this size until they become full-grown. Apply dieldrin 1/8 to 1/4 pound per acre,or toxaphene, 1 1/2 pounds per acre. Allow one week to elapse between treatment and harvest of the grain for wheat and rye, but allow 14 days when toxaphene is used on barley. For grass pastures, carbaryl (Sevin), 1 1/2 pounds per acre, or methoxy- chlor, two pounds per acre is suggested. Methoxychlor does not kill the armyworms but does prevent further feeding. Allow seven days between treatment and pasturing of livestock when methoxychlor is used. The greatest mistake made in armyworm control is to panic and apply insec- ticides when they are not necessary. Do not use insecticides unless the worms are present in numbers sufficient to warrant treatment. High temperatures speed up the rate of armyworm growth, but, at the same time, promote the spread of a disease which kills armyworms. The next two weeks will be the critical time to count live worms and decide on insecticide applications. Variegated cutworms may be present in numbers in clover and alfalfa fields. After the first crop is removed and before new growth starts, apply Sevin or toxaphene if worms are devouring the new shoots. Toxaphene should not be applied to hay fields when growth is over four inches. Black cutworms are reported to be damaging corn in some fields of central Illinois. If the plant is cut off above the growing point,or heart, the plant usually recovers. If it is cut off below the growing point, the plant will BE Meee flit the plants are being cut below the growing point, an application of 1 e! be dieldrin or three pounds of toxaphene is warranted. Direct the spray t the base of the plant in the soil. Use as much water per acre as possible. Cultivate fmmeditlately to cover the insecticide. PUSUEBSETY BS bt caeet PHUTEAIUG YavaR LORe it visioaw to sokyese 2 at dixtea orfe \ es Cee oP ee oo ae ere. A ig .(datqeoxs edoaeat tlovt) Hath ome pet aye pee . wy Verytna Teer piluatesa ‘to a en ren aS rar OF arr 3 yas ao Low Rv ont antar| % Diode FooMmye oF + DnB eenengere a: ata uloftspnos pe ann 2brede ants EEE, si avowenud O18 BxieQuysancl, wow £\S at OVC rods sus snmow end to adiss i gaaw dead abit os geil teyt awed ad! of gaalo yede anxow bedodsd | iat vas = at gqudbost a Arie hsqirsi “ao erriowe yer aos Bs vile inate wanchds oft to ofiexesou erlt ngs oid add olfdw egelorg co aid’ eer SER! E : eageic o¢ desw —slvad co bes ut adedgenod modw ayeb ae “GONG cat rape “LoL af a ows ,tofrio ” é ikke tueverq asob Jbeetr ak “ofdoxcosdtom soc siooteovht Coes att yood sedw sattoks eroding ob Pripasig che ai ia Seoucre —) mol tow vo codemercsy ee ns i tyst ho eae say “oot Hat Vfiveveas ots narrow TE got weve oi ddworsg tradw eros e tis i? Goad wi LOS sso yited ave edagia sat abrosog sony co olyblers lies sty of dnslg end - ,abiottesndt afd savoo od 205 Pupation of overwintering European corn borers is complete in southern Il- linois, ranges from 50 to 90% complete in central Illinois, and from 25 to 70% com- plete in northern Illinois. Moth emergence is well underway in southern Illinois and has begun in central Illinois. No moth emergence has been recorded in northern Illi- nois as yet. Some death of overwintering borers was noted this week. Borer development is similar to previous years and development of corn is slightly later. However, we will have to be alert to this pest in about four weeks. Leafhoppers are present in greater numbers in alfalfa fields this year than they have been for several years. These pests migrate into Illinois. The exact area of heaviest infestation has not been determined but it is generally a wedge-shaped area in the central part of the state. Wireworms and sod webworms have been reported damaging small corn plants. Horn fly numbers on pastured cattle increased rapidly this week. Several hundred horn flies per animal was common. Stable flies and face flies were present, but in low numbers. For beef cattle, a 0.5% toxaphene water-base spray every three to four weeks is effective against horn flies, A backrubber containing 5.0% toxaphene in oil is also generally effective. Allow 28 days between treatment with toxaphene and slaughter of the animals. For dairy cattle, use 2.0% ciodrin, 0.1% pyrethrin, or 1.0% DDVP oil-base spray at 1-2 ounces per animal as needed. Bees needed for pollination can be killed with pesticides. Do not apply pesticides during mid-day to crops being pollinated by bees. Caution: Before applying insecticides, read the labels carefully and fol- low all precautions. This not only will insure personal safety, but also will elimi- nate residue hazards. ¥ eH K HK KK KK This weekly report was prepared by H. B. Petty, Steve Moore, and C. E. White, Illinois Natural History Survey and Illinois College of Agriculture, in coop- eration with the USDA Agricultural Service, Plant Pest Control Branch, from informa- tion gathered by entomologists and cooperators who send in weekly reports from their own localities. i | a ~IT nveddvoa ak edelquon ak anovod anos nseqosu8 gabvedaitwrevo to sorkaqud >) ae . od joo ROY at €S monk bas wetorelie Tavdneo tt “ofe fern mop OQ od “oa Moxy esaner ef Ore efou slit aveddioa af yewrebus [few af esnogramns dito .stonkLit averovon at ~E€LfT oredtrom ot hebrosest ased gel sorsaiena stow of .atontlttl Isrines of o de loa; eft beton ami euetod anivedatwreva To rdseb enod «hay a8 2 soltmie 2f drei mega levees <97n08 | Si pmwowo to dnesdcafeveb Bas £ + . [ere eu es Pe ~+ theatre ae ae - it re38, ew 710% duods af vevy efdt ot grefe od ot oved Ifiw ow .revewoH .vedsl eradten vedserg aL diszexd ove aroqgottsed synim adueg saad? .errey Isreven 10% meee dud Dovtutoseh ssed sou ead noldstastak deatvass estate ent to dusq Lewtroo sid mb Meyer oO r suoget vosd avsd 2 smrowoxt AT er iments ee afoveo hewnseng co sxocuiud ate .foavion saw Leskees cor woreda wo mk "ti ad tadaw tsed cot : ik “rg: 3 avidestte ef as Ore ore Chinch bug adults have left their winter quarters and can be found in grass fields and thin stands of small grains. No high concentrations were found this week. Corn borer overwintering populations were highest in the area west of a line from Rockford to Joliet and north of a line from Joliet to Pittsfield. Pupation of the overwintering borers is now complete in south and south-central Illinois and ranges from 75 to 90 percent complete in central Illinois and from 50 to 85 percent in north-central and northern Illinois. Slight moth emergence has occurred throughout Illinois. Corn can be damaged by a variety of thingsother than insects. This week we saw corn root injury from wind whipping the plants. If no insect can be found, look for some other cause. Bean leaf beetles are abundant in a few fields of soybeans. Applications of insecticides are usually not required at this time; but if stands actually are being killed, 1 1/2 pounds of toxaphene should control them. Potato leafhoppers are more abundant on alfalfa than they have been for several years. Second-growth alfalfa north of a line from St. Louis to Paris may be noticeably damaged within the next few weeks. When the new growth is 4 to 6 inches high, shake the plants over a plate. If tiny yellow to green wedge~shaped insects run sidewise across the plate, you may expect the alfalfa soon to turn yellow and purple from leafhopper feeding. To prevent this, apply 1 pound of methoxychlor or Sevin. Allow one week to elapse between application of methoxychlor and harvest or pasture, Bagworms have hatched in southern Illinois, are or will soon be hatching in central Illinois and will hatch in another two weeks in northern Illinois. To control them, apply sprays of malathion, toxaphene, Sevin or lead arsenate. Do not apply malathion to Cannart red juniper. For small amounts of spray, use one table- spoon of lead arsenate, malathion wettable powder, Sevin wettable powder or 60 per- cent toxaphene emulsifiable concentrate, or 2 teaspoons of malathion emulsifiable concentrate per gallon of water. Elm leaf beetle larvae have been feeding on Chinese elms in some areas. Sevin or lead arsenate sprays will control these pests. Honeybees may be damaged by field applications of insecticides unless precautions are taken: (1) Apply materials when bees are not visiting the field; (2) do not apply insecticides directly to or allow them to drift over hives of bees; (3) where bees are close by (up to 1/2 mile), choose the insecticide least toxic to bees, or notify beekeepers at least 48 hours before application ismade; and (4) avoid contamination of clover crops or non-crop plants being visited by bees. More in- formation on bees is available from E. R. Jaycox, University of Illinois Horticul- ture Department, Urbana, Illinois. Caution: Before applying insecticides, read the labels carefully and follow all precautions. This will not only insure personal safety, but will also eliminate residue hazards. KHIKKKEKEEK This weekly report was prepared by H. B. Petty, Steve Moore, and C. E. White, Illinois Natural History Survey and Illinois College of Agriculture, in cooperation with the USDA Agricultural Service, Plant Pest Control Branch, from information gathered by entomologists and cooperators who send in weekly reports from their own localities. is ToL a Ge {- he nies ore Ma dele (a a 7 , anor sf aso bra evetrsup votaiw vbedd dtef svad ativbs sud doaido yaw enoicerinsones dgtd ¢ s ANVOL ay Loris oie P- . pat nists ifsms to ebusda atddy Bas ebLst?t aa, .toaw a Tsiniwievo xoerod aro) tskLol of Btorloon moxt oni a ee ont to nok q'0@ of ey ae 6 set bas aloe. Bae men at desosed @8. , + - ayins nee LL frodguordst bewts990 ani mectt son iL »aSMEL 3 Creat 4 are i aslteod Teel od BILGE. Fee 954 BIB, Leravea yidseskd son ad eigen easuiorue a mix etosens- rau Bas wolley xvolioyxodtsm seovuss bas 1 SVE ONerowe Lever fe ot iFalea yy. £ to noo a YaxXOT trio atheninrsonos Sussb od an Cia 2HOLTURISTE ani ywlqqe tom ob (9) eu aged oy asw ‘) aged atte ft , po Ubaaee et ah oh, 1 Bchiog gy Ser Or Me re ee Hs sry iy Best : pievire i inh poe BrP ha Prose fe Brice st enero er rest ere er ee a | Ll. hii 8 WES FOR IMMEDIATE RELEASE June 5, 1964 INSECT SURVEY BULLETIN NO, 8 This is the eighth in a series of weekly bulletins on the general insect situation in Illinois (fruit insects excepted), prepared by entomologists of the University of Illinois College of Agriculture, Illinois Natural History Survey and cooperating agencies. It is designed to forewarn people in Illinois of impending changes in insect activity and to suggest abbreviated control measures. These re- ports indicate only general trends. Each individual should check his own fields to determine local conditions. Armyworms matured rapidly in the area south of Route 9 this past week, With pupation,worm populations decreased. Small worms are still present in a few fields, but they are the exception. Numbers are also being lowered by disease and parasites. Except for a few unusual fields, treatment in this area should cease. Thick stands of wheat in the area north of Route 9 still have 1/2- to 2/3-grown worms, and occasional fields have threatening numbers. We have had several reports that armyworm control apparently was not effective. It is difficult to determine immediately. Most insecticides kill army- worms slowly. Only about 25 percent of the worms ordinarily contact the insecticide in the first 24 hours. Cool weather has also slowed down kill. For these reasons, do not try to determine the effectiveness of sprays for 96 hours after application. Black cutworms rate the "insect of the week" award. Infestations are scattered throughout the state. Worms are not predominantly one size, but vary within a field from small to full grown. Thus the damage will probably continue into the week of June 8. Many plants are now being cut below the growing point and will not recover. If 10 percent or more of the plants are being cut below the growing point, an appli- cation of oye pound of dieldrin or 3 pounds of toxaphene is warranted. Direct the spray into the soil at the base of the plant. Use as much water per acre as possible. Cultivate immediately to cover the insecticide. Insecticides commonly fail to give a high degree of control, since the worms are below the soil surface where they can not be reached with sprays. Also, as the worms become larger, they are naturally harder to control. If the field has been destroyed and insecticides are not to be used, either consider replanting with soybeans or, if replanting with corn, delay a few days to allow the worms to mature, and use a hybrid that will mature before frost, Wireworms continue to damage corn in some areas. If replanting is necessary, either leave the old stand and straddle the rows to replant or, if disk- ing up the old stand, broadcast aldrin or heptachlor at 1 1/2 pounds per acre be- fore disking or use 1 pound per acre as a row application at planting. Corn borer moth emergence is about 75 percent complete in south-central Illinois and ranges from 25 to 75 percent in the central and north-central sections and from 10 to 50 percent in the northern part. Corn borer development is comparable with that of other years, but corn development is slightly behind schedule. It might therefore appear that potential corn borer survival will be low this year. However, dry weather could delay moth emergence and egg-laying and thus favor survival of borers. Therefore, as usual, the need for insecticide control in the most advanced fields in western and north- western Illinois can not be determined until egg hatch, which will occur between June 25 and duly 5. 8 Ou MITEL YaviUe TOaant goose? Latoaen oft mo anideifluc videew to aebree 2 af sdngto ond ak chet * odt to 2deiaclomodas vd bereqerq .( SaFGeons gtoeant divyt) efomEltt at ro Box yovicu yvioralll Lavucall eloniiiLt .ssudivoingA te seeffou —— to anitnogm: to efoatill ak slgoaq sitewsist oc bengiesh at +1 ESHSBB & : ese gaed ,so%naser Lows: belive tasnaue oF Boas yi oe soogat at. ; ot ebfetk awo etd voodo Blyosia fsuhivitul dosd sabaoit Lerenog ylao otsotbat »anorsioiaos Leool onin pee: bas ve sous? hed svat sho EVtES at FT vevidostte- ' i who ,yfwole amrow avsod #9 gacit edt ob sthyvotah od yut gem ob > iz es wosane 20 Suet emxowdsia woeia a | doe sos aneyow sogade arg Su jongvotad beretdsog anal .aewe 43 iter of Lfisme moxvt Blett se ntdtiw S .4 enifl to asew oft odmt 0 disoTte¢ of aI EO — io GoLdso WE OS te gLOnwies “Eo 8 .oidooeae Phe .G2DA .aecrra oitin berioss pen woled e718 antrow : TP ay t ws ae eles ‘ ; cet Beg es ef on - eee ae DLals sid FI vlogsnes oF mies exooad acaow sid as aunt bas boyoutash pie? ] .0 anteedyoa 3 sey brs neaon ants SWwOLLY pore Fei lean eae £3 .urse2gaoon « bosegq £ abi io so lderb syot SSO CS oe of OL mock bre poids ftw micoleyveb sarod xo? 2 seg ris Ere are af ratigtte ei dnomqoLlevek Afi fares "ef 7 fevivive getoed se xos Fis nT vo f el-g390 Dims Sononiaine ee BES Hagia > 4ok Soon sit mosnecd vr ifé mie eioniLii mregeow . st Ylob Sos @2 aruG zy Chinch bug adults are plentiful in a few fields where small grain stands are thin, particularly in some areas of eastern and central Illinois. During the next two or three weeks, examine thin stands of small grains for evidence of chinch bug damage. It will appear as prematurely dry or dead areas in grain fields. Corn adjoining such fields may suddently wilt and die. Close examination will show clusters of small red chinch bugs on the stalks. To control migrations of bugs from small grains to corn, apply 1/2 pound of dieldrin per acre to a strip two rods wide along edge of the grain field and into the corn as far as the chinch bugs have migrated. The application to the grain field is important if you want to control chinch bugs before they damage corn. For maximum results, cut and remove the grain prior to application; if you spray standing grain, be sure to allow one week to elapse between the application and harvest of the grain. Do not use the straw for livestock feed. Sod webworm moths were flying this past week in central Illinois. These moths will now lay eggs to produce the first generation of larvae, which seldom cause injury. It is the second generation, occurring in late July and August, that is destructive. Therefore, if controls are needed, it will not be until the middle of this summer. Caution: Before applying insecticides, read the labels carefully and follow all precautions. This will not only insure personal safety but will also eliminate residue hazards. KKK KEKE This weekly report was prepared by H. B. Petty, Steve Moore and C. E. White, Illinois Natural History Survey and Illinois College of Agriculture, in co- operation with the USDA Agricultural Service, Plant Pest Control Branch, from in- formation gathered by entomologists and cooperators who send in weekly reports from their own localities. Special to farm advisers--not for publication. Fish kills of a week ago in northwestern Missouri were first attributed to armyworm pesticides. It is now believed that heavy rains washed out the sewers in some major cities. This heavy influx of organic material created a distinct oxygen shortage in the rivers and caused the fish to die. A further report by the USDA on the Mississippi river fish kills states that "recent public hearings conducted by the Department did not substantiate assumptions that recent fish kills in the lower Mississippi resulted from the use of pesticides on farms...a major source of pesticide residues was an industrial plant manufacturing the chemicals." wot B SE iviisuelg ets adfubs aud doatsd amie 3 IO apeis omee nt yiyskuoltsirsg cok co saninsxs ,;2dsew cords af Yass fliw ny = ‘ge “a io verb rE ass thurs ntisbina ysm abiert ose gti tog, hex [Laas to 3 _ 6 Dusrog ‘siaine Lordsos of ‘ { Bins 1 & OF sos tag airhls sty as wl as ation ark | ot morrsctlaqs odT | ; : eysmah ysid sno'tad aad pate y : any af ,qfisrg nabbrssa yore voy ti j;aottsotlLegs o¢ toriq Ory ; ft Eo das Bas molcascilgqeas enF noouted Eg Adon ; ; } By has yet Cie ailtom i ret fate arid ah 41 yupatl 9ayso f gon Ufiw 72 ,henssn ave el Ff ,9terstsnl avig ourtasb ai Touma aid? To | PO LT ABO ‘ Jame hpeas rg Tis wollot oblast stenimilea | y 7 | “i tee, .fogsid Lown cach Lsxn acted i i Bre2 ornr Be Pole n oL ’ bare pore’ SS.6 D8 Aye) we iy ee MEOW ITs ‘OF SMOn oF rsayxa a! Ps PCIe He ee i . RI2 (ee FOR IMMEDIATE RELEASE June 12, 1964 INSECT SURVEY BULLETIN NO. 9 This is the ninth in a series of weekly bulletins on the general insect situation in Illinois (fruit insects excepted), prepared by entomologists of the University of Illinois College of Agriculture, Illinois Natural History Survey and cooperating agencies. It is designed to forewarn people in Illinois of impending changes in insect activity and to suggest abbreviated control measures. These re- ports indicate only general trends. Each individual should check his own fields to determine local conditions. Corn borer pupation is nearly complete throughout Illinois; moth emergence is progressing rapidly, and the moths have begun to deposit eggs on the most ad- vanced corn. The area where corn is most likely to be damaged by corn borer lies west of a line from Rockford to Joliet and north of a line from Joliet to Pittsfield. Here borer development is about normal, while corn development is slightly below normal south of Highway 6. The result is fewer borers and less damage. With warm nights, egg-laying should peak in about 10 days in this area. However, in the northern section (north of Highway 6), borer development may be slightly slower than normal, but corn development is about normal. Here more borers will survive and, peak egg-laying will occur in about two weeks. Cool nights and windy weather would postpone egg-laying and increase the damage potential in the threatened areas. Watch carefully for borers in the more advanced fields of corn during the next two or three weeks. To decide whether to use insecticides, measure the tassel ratio of the field and count the percent of plants with recent whorl feeding. To determine the tassel ratio, measure the height of the plant with leaves extended; split the stalk open and measure from the tip of the developing tassel to the base of the plant. Divide the tassel height by the plant height, and multiply by 100. This figure is the tassel ratio. If the tassel ratio is at least 35 (preferably 40-45) and at least 75 percent of the plants show recent whorl leaf feeding, then treatment is justified. Use 1 pound of DDT or 1 1/2 to 2 pounds of carbaryl (Sevin) per acre as granules. For spraying, use 1 1/2 pounds of DDT per acre, and direct the spray to the upper third of the plant. Aerial applications should be granules, not sprays or dusts. Follow the label precautions in harvesting and feeding treated corn. Black cutworms and wireworms continued to damage corn. Small, half-grown cutworms will feed for several more days; they can still be found along with larger sizes that have about finished feeding. If small worms are still plentiful and you feel that insecticides are justified, use 1/2 pound of dieldrin or 3 pounds of toxaphene per acre aS a spray. Direct the spray into the soil at the base of the plant. Use as much water per acre as possible, and cultivate immediately to cover the insecticide. If replanting becomes necessary because of wireworms, either leave the old stand and straddle the rows when replanting or, if disking up the old stand, broadcast aldrin or heptachior at 1 1/2 pounds per acre before disking or use 1 pound per acre as a row application during planting. Where replanting, select a hybrid that will mature before frost. SRE BE sant + ievensg ont a0 eahtes iid ylisaw Yo sith 30 as nds tonstne ye Sexvageng aa ou", yvosetn Letutsil atomtifl , sag eee S sfontirT wf siqoaq mearato® ot -o1 seem! ,asnuesem foxdnos ‘egerverdds jas of shfet? aim abd olosde bfuoda Laubivibal + sy sone fiom oekoree iid drortagorets seahacey gee eS 4 he Jee oft wo epee chsogah oF oijed vet 2 Kl Heganeb od oF Ylowkll geow at nios esti so28 ‘edt Pols werei sail 6 te Apion Bars, POLLO vd Zxorwtood op Aste i dwsncoleves aoc “gboehe ’ Esanctoa throws Byes Wee agiv .ens ests geal bint sisted vows} at dicasy off 3 She HE gUSvewTh 4BSTA,eidt Ge Sys OF dass at Faoq nes “ceeats a eee ad Nat ore suegol aves waved CA yainhiih 0 a0) ff 2bnS Sviviun [liv susred ovom ete -isitsoin Jucde af otouigatevs ore) savosw ond Jods rh woe ALE gale auy sassvont Sue uebyel-aye useqdeou aivow usdtssw ybabo Bus adipic foo. teens bursiheeate oid i fs eh pasnith Zl Soansvbs som ol mi grsvod tot ys ivtsctes faxes arth Si EOLOR OSE? Pei AAS apeosiec! Seay eeuttd, tO 4 ay gatos ihe dases die Any 70. eee aie giuroo & iol “one 8 » Hahisse ; Sanat oid Yo Graton ait ates ae taseas hei of] far Seed. aay od wad galgofecRy skh lo Git cH wevk oupseen Fes tega KE Paes | sae] “eie Ea ies 4 Sie + Ties pen: 4 fas! aes ae ral eGy hor [eesas end ohivill Lc eBbel che 42 cides Tosgad efiy TE ,ortat humsas et at 2 Ge? geuernsss, the Eeode siesan woe guneleou’ to cnissced Sy “asst debe | (atwea) Dossdis: So sharog tor A\l Ll 46-260 So haope. cull x: pa ey cS ae “ i JIecLS bite . sins, veg ee 86 ebarag S\h £ exe Feige “WE — sd 4 x. t Bree, PAO aM o 7 ae Tw ot TES rt = > O i 4 Sh ier rey wirETg o aa Nghe! Ww ibs te) ery a reodtay Le nb fais, ost add moog to tg = Ly 2 A + “t 2 r mo if tone Pot rd OTe ¢ 4 + xr Peres pete Nt og r le rahe fa a . % YLANG oe sey efers Ts. 13 ~~. . aa5 Stored-grain insects are waiting for wheat harvest, which is just around the corner. Prevent damage from these insects by sweeping up and cleaning out all old grain and other debris from inside and around the bin. Clean harvesting equip- ment as well. Then spray all inside bin surfaces to the point of runoff with either 1.5 percent premium-grade malathion or 2.5 percent methoxychlor. Also treat the wheat with a dust or liquid form of premium-grade malathion. This program will insure insect-free wheat for a year or more. Bagworms have hatched in southern and central Illinois, and treatment time is here. In the northern section hatching will be completed within the next two weeks, and treatments should be made the last week in June. Bagworms, like most other insects, are easier to kill when small. Use lead arsenate, malathion, carbaryl or toxaphene. Follow label directions for mixing and proper use. Caution: Before applying insecticides, read the labels carefully and follow all precautions. This will not only insure personal safety but will also eliminate residue hazards. KHER This weekly report was prepared by H. B. Petty, Steve Moore and C. E. White, Illinois Natural History Survey and Illinois College of Agriculture, in cooperation with the USDA Agricultural Service, Plant Pest Control Branch, from information gathered by entomologists and cooperators who send in weekly reports from their own localities. Special to farm advisers: Many times during the past few years we have complimented the Food and Drug Administration on their excellent job of food inspection and food seizures--a protective measure that insured Americans of a wholesome and safe diet. We have called to your attention food seizures due to illegal pesticide residues, but we have commonly failed to place them in proper perspective with regard to seizures due to other causes. To do so, we quote figures from the May 1964, FDA Report on Enforcement and Compliance, page 18. During May 1964, there were these seizures: 867,968 lb. of food seized and charged with contamination, spoilage and unsanitary handling. 115,022 1b. of food seized for economic violations. 110 1b. of food seized for illegal pesticide residues. 983,100 lb. of food total seizure. These data confirm our belief that the FDA is doing a detailed and fine job. HBP:cm 6/11/64 ; - Ss oe “Ges “2% a2 mole seve wot gets: i's $80 nilasols bes ur nakgem et ied : -qinge pititeavis! asefo .nid sit idon Weary ‘te tubog eft of 2eont on dior Seip minha at orient disor g 2.8 40 Gash [liw msreore aia? woistts ten’ Se tof our a0 Beh To .dxemds ss bis getor a Sabie? ars peas os ab lee ~ ous The oie Eatin’ 2 Fogo ov [ftw siedeio+ Tett all .ntsovesd ~.oaus ak ssy Jeet a a ney Bly (erecta so sdge ee St StSaLs besl sal Eres es Lois i ot 62a Teed fur aubxhes sat esau hos vitovadso afedel adt Keay ,asbiard ie gore Ch " ; net Se wane Atatsotosedcita so . aimee Telewest Hoar Be ae nanan: shotd 12 ar esoesai aoe fony a ‘Te Com) Ls eiarik eon Sqveeem oy ioSceaty LENSE 6 ag) uaiy eSsyhese eaaiets obdsed's soy og asiieteg a7 Dasgee giv evigjveqwired asentg afro saeloGr Seles? vito LY avumthk syouy, =w 2.65 40 aT Gigssees “redse scent ,fOul vali ariel Us euay ,soeadignod bas Paes ale . ' ie ro bg ie 7 muitvsainssas asty hopes hae Geses? too te a Geo Foe: 7 BLL ONSs “Ne iba eT Duis , seatacte an alison cine gcse ar Rebeee DOG) fa 2d SNe ae f os ot on -23n bias Shracgeeg dsnetis nek Desrer pow aio at OnE - ea , Sens ses bE TS 4cke oof, bse fos Do Liereh aniohS uf AW sad seis Taifedors myiinos ejeh seodh OC Ye En 7 FOR IMMEDIATE RELEASE June 19, 1964 INSECT SURVEY BULLETIN NO. 10 This is the tenth in a series of weekly bulletins on the general insect situation in Illinois (fruit insects excepted), prepared by entomologists of the University of Illinois College of Agriculture, Illinois Natural History Survey, and cooperating agencies. It is designed to forewarn people in Illinois of in- pending changes in insect activity and to suggest abbreviated control measures. These reports indicate only general trends. Each individual should check his own fields to determine local conditions, Corn borer pupation is complete and moth emergence is nearly complete throughout Illinois, with the possible exception of the northernmost tier of coun- ties. The overall situation is difficult to diagnose, since we have been unable to assess the effect of recent rains on corn borer moth population. Also, cool, rainy nights discouraged egg-laying. Warm, calm nights would speed it up. In general, egg counts were extremely low this week on the east side of the state, slightly higher in the middle section, and highest in the west. Egg-laying is nearly complete in the central and western parts of the state south of Route 9, but will continue for almost two weeks north of Route 9. It appears that the week of June 22 will be the critical time for decisions about treatment in the area west of Route 51 between Routes 9 and 6, and the week of June 29 will be critical in the area north of Route 6 and west of Route 47. It is doubtful that other areas will have enough borers to warrant insecticide use. To decide whether to use insecticides, measure the tassel ratio of the field and count the percent of plants with recent whorl feeding. To determine the tassel ratio, measure the height of the plant with leaves extended; split the stalk open and measure from the tip of the developing tassel to the base of the plant. Divide the tassel height by the plant height, and multiply by 100. This figure is the tassel ratio. If the tassel ratio is at least 35 (preferably 40-45) and at least 75 percent of the plants show recent whorl feeding, then treatment is justified. Use 1 pound of DDT or 11/2 to 2 pounds of carbaryl (Sevin) per acre as granules. For spraying, use 1 1/2 pounds of DDT per acre, and direct the spray to the upper third of the plant. Aerial applications should be granules, not sprays or dusts. Follow the label precautions in harvesting and feeding treated corn. Phorate (Thimet) and diazinon as granules also have label approval for corn borer control. Armyworms are still found in occasional fields of grain or grass in northern Illinois. Check thick stands of oats carefully for the next two weeks. In central Illinois worms have all jpupated and the moths are abundant and are attracted to lights. Ordinarily the moths migrate northward and there is not a second damaging generation in an area in one year. This week we have had questions about possible drift of dieldrin spray onto the edges of hay crops to be fed to dairy cattle. If there is any question about drift, it is safest not to use the hay from that area of the field for dairy cattle or livestock fattening for slaughter. The next cutting will be all right. Grasshoppers are hatching, and small ones can be found in fence rows, ditch banks,and similar areas, It is not time to use insecticides, sinceshatch has just started and will continue for two weeks or more. eee - JUN 2 noe Chinch bugs can be found occasionally in thin stands of small grains. Examine dead or dying spots for small red or black chinch bugs. If migration starts, apply 1/2 pound dieldrin per acre as a barrier strip two rods into the edge of the grain field and into the corn as far as bugs are wilting corn. Do not harvest the grain for one week after application. Clover root curculios have been injuring soybeans that followed red or sweet clover or were adjacent to such crops. This damage occurs on marginal rows or in spots in the field. These small gray to light brown snout beetles eat the leaves and gouge holes in the stem above ground as well as below. They feed mostly at night and are difficult to find during the day. To control curculio on soy- beans, apply 1 1/2 pounds of DDT per acre or 1/2 pound of dieldrin. Apply only if plant loss is apparently going to be severe. Thrips can be found in the whorl of many corn plants in western and southern Illinois. Their feeding appears as tiny streaks of white mottling on the leaves. When thrips are abundant, the damage may give the field a wilted silvery appearance. The plants rapidly outgrow the damage with the first rain. If control is necessary, 1 pound of DDT per acre banded over the row will be satisfactory. Toxaphene, malathion, and several other insecticides should also provide control, Face flies increased this past week. This increase is somewhat later than in previous years and may be a good omen. However, dairymen should begin to spray their cattle with 2% ciodrin in oil. For beef cattle on pasture, apply ciodrin with an automatic sprayer, or at least provide a backrubber with 5% toxa- phene. Allow 28 days to elapse between treatment of beef cattle with toxaphene and slaughter. Caution: Before applying insecticides, read the labels carefully and follow all precautions. This will not only insure personal safety, but will also eliminate insecticide residue hazards. For a list of general precautions to use when handling and applying pesticides, write to 280 Natural Resources Building, University of Illinois, Urbana, Illinois, for "Safe Use of Pesticides." KXBKKEKERE This weekly report was prepared by H. B. Petty, Steve Moore, and C. E. White, Illinois Agricultural Extension Service and Illinois Natural History Sur- vey, in cooperation with the USDA Agricultural Service, Plant Fest Control Branch, from information gathered by entomologists and cooperators who send in weekly re- ports from their own localities. Oo i. oe wniesg Tisma te abusde aidé sk yllenolasovo Saye. sa aso egud domidd — noiveryin tL ed S pare Mosid so Sar Liam yok edoge aunryb to bsab o . oa eft amit abot ows qivie sobmed » es ores weg skibtoth brsoq S\L viggs «2: ae of LatOo aiuiciin ote anyd es vst es mioo sft odnt fas Slott mtetg edd to 4 Noitsoilggs tavis usew ano tor mista od seovesd tedt ansadyos gniuvir. seed evel soityouro Soon rovol$ “Ys ayBcie audio fiers, od GHesetbs exsw wo - am ae Neteainnarne mean ou kyed ,LSTS SHO POOR 6 vant fas evsey avoivara nt .cent avs ety al dae bond xO a slaras Siitiw alsveo utedd ysunga “Oo .“veysiqe oitenotuse ms ahiv micboto Taste neewied srosiso gf sj i » BS woLlA .eneddg tedtinvela Bae’ me pean ) OSes dsacery fis wollict ay tfonsil Phos Oe a wed aE pony posse ionic .easds “ak gal- lons of water. Rat-tailed maggots are abundant in areas where there is animal waste. These maggots are blunt-bodied and have a long tube on the end of the body. The adult is a flower fly or sweat bee. No control is recommended, Caution: Before applying insecticides, read the labels carefully and follow all precautions. This will not only insure personal safety, but will also eliminate insecticide residue hazards. For a list of general precautions to use when handling and applying pesti- cides, write to 280 Natural Resources Building, University of Illinois, Urbana, Illi- nois, for "Safe Use of Pesticides.” EEE This weekly report was prepared by H. B. Petty, Steve Moore and C. E. White Illinois Agricultural Extension Service and Illinois Natural History Survey, in coop- eration with the USDA Agricultural Service, Plant Pest Control Branch, from informa- tion gathered by entomologists and cooperators who send in weekly reports from their own loealities. 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FOR IMMEDIATE RELEASE July 10, 1964 632.2 sas | This is the thirteenth in a series of weekly bulletins on the general insect situation in Illinois (fruit insects excepted), prepared by entomologists of the University of Illinois College of Agriculture, Illinois Natural History Survey and cooperating agencies. It is designed to forewarn people in Illinois of impending changes in insect activity and to suggest abbreviated control meas- ures. These reports indicate only general trends. Each individual should check his own fields to determine local conditions. INSECT SURVEY BULLETIN NO. 13 Fall armyworms and yellow-striped armyworms, not true armyworms, are present in small numbers in late-planted corn. The fall armyworm is gray to brown, while the yellow-striped armyworm is velvety brown to black with a promi- nent yellow stripe along both sides of the back. These worms feed in the whorl, and the plants develop a ragged appearance as leaves emerge. There are usually several infested plants in a row, since the worms move out in both directions from the plant on which the eggs are hatched. Populations of these insects will probably continue to increase from now until September in late-maturing corn. If 20 percent or more of the plants are infested, treatment may be profitable. Use 1 1/2 pounds of DDT, carbaryl (Sevin) or toxaphene per acre. Granular insecticides will penetrate the whorl more readily than sprays and pro- vide better control. Do not use DDT or toxaphene if the corn is to be used as ensilage or stover for dairy cattle or animals being finished for slaughter. Two-spotted mites are damaging fields of soybeans that porder clover fields. When the clover is cut for hay, the mites move into the soybeans and begin feeding. The damage appears as a brown speckling of the leaves. When beans are severely infested, webbing is noticeable. However, the tiny mites, which like the undersides of the leaves, are difficult to see unless the leaves are jarred over a white paper or cloth. Dry weather favors mite development, while moisture discourages mite build-up. Control measures, in general, have been inadequate. If damage is severe, try a malathion spray at 1 pound per acre in as much water as possible, directed at the undersides of the leaves from drop nozzles. Do not harvest as forage or feed until three days after treatment. Potato leafhoppers are causing yellowing of second-cutting alfalfa. These tiny green, wedge-shaped insects suck sap from alfalfa plants, causing yel- lowing or purpling and stunting. The damage lowers both quality and quantity of the hay. If this pest is abundant or yellowing is occurring, apply l pound of methoxychlor or carbaryl per acre. Allow one week to elapse between application of methoxychlor and harvesting or pasturing. There is no waiting period when carbaryl is used. Note to Sweet Corn Producers (AE [Ronny pp Corn sap beetles are now appearing in corn. They wel beading on fer- menting pollen and in earworm and corn borer galleries./|//Growers_of market sweet corn and canning sweet corn should watch for these beetles ‘and'shéuld treat if they are abundant. Treatment should be applied pefordl/Aheybee les lay eggs in the silk channels. For control, use diazinon or malathion and observe label precautions. Corn earworm moths are being caught daily in moderate numbers in the light trap at Urbana. (30 0 “teh R2ASUSR ETALCTHMMT AOT per iba hee ia dosent ett to | yer? LOC aL ce aot ah TOL Lay eee eri lame ai drevsotg add oftdw .cword wolflsy dre ‘ely ont Bris aeltat Lavrevee ely ens sort rag YL idaderes Barivie-wolls ‘ eres nl, tee LS od. ‘ =~ f ~ SITE LOM Sa siw ,eusved bofsartb YO sysyvok Ta an Le ae so salwol Tehites ei 3. eyed aut TO ‘ eeley 2oO tolsoynzaddort re ioyxcrtom “Lo Sau ar Iyisdass “ais if tages & | so Horn flies and stable flies are abundant on cattle, and control programs should begin immediately. Face flies have been slow to build up this year, but populations are expected to increase throughout the remainder of the summer, par- ticularly in the northern two-thirds of the state. To control flies on pastured dairy cattle, apply 1 to 2 ounces per ani- mal of the oil form of 2.0% ciodrin, 1.0% DDVP or 0.1% pyrethrin as needed. Pay particular attention to the legs and undersides when spraying. For pastured beef cattle, apply a 0.5% toxaphene waterbase spray at 1 to 2 quarts per animal every three weeks. Allow 28 days to elapse between treatment with toxaphene and slaughter. House flies may soon become a nuisance now that most areas have had some moisture. Follow these three steps: (1) Practice good sanitation; clean out fly-breeding areas, such as manure, rotting straw, wet hay, and feed, as often as is practical. (2) Apply a barn spray material, such as dimethoate (Cygon), diazinon, or ronnel (Korlan) to runoff on ceilings and walls of all livestock buildings except poultry houses. Use only ronnel in poultry houses. (3) Apply a supplementary spray bait, using the same insecticide mixed with corn sirup and water (2:1 ratio). Other insecticide baits may be used to good advantage as well. This program will not only control house flies, but will also reduce stable flies. Picnic beetles continue to emerge and are a nuisance in many areas. These beetles are about 1/4 inch long and are shiny black with four yellow spots on their backs. They are attracted to the odor of food and get into food at pic- nics and cookouts. They swarm onto overripe or injured fruits and vegetables in gardens. Keep vegetables and berry patches free of overripe and rotting fruits and vegetables. Reducing injury to fruits and vegetables from other insects will help to reduce the number of picnic beetles. Sprays of malathion, diazinon or carbaryl help to control them, but it may be necessary to repeat the applications as beetles migrate into the area. Check application information on the label for each crop on which you intend to use the insecticide. A 0.1% pyrethrin spray can be used for quick knockdown of beetles at picnics or cookouts. Caution: Before applying insecticides, read the labels carefully and follow all precautions. This will not only insure personal safety, but will also eliminate insecticide residue hazards. For a list of general precautions to use when handling and applying pesticides, write to 280 Natural Resources Building, University of Illinois, Urbana, Illinois, for "Safe Use of Pesticides." *¥x HK ¥ This weekly report was prepared by H. B. Petty, Steve Moore and C. E. White, Illinois Agricultural Extension Service and Illinois Natural History Sur- vey, in cooperation with the USDA Agricultural Research Service, Plant Pest Con- trol Branch, from information gathered by entomologists and cooperators who send in weekly reports from their own localities. NOT FOR PUBLICATION - Special Note to Farm Advisers: Salt, mineral supplements and other feeds containing either phenothia- zine or ronnel are not recommended for controlling face flies or stable flies even though they may give good control of horn flies. Sey a . cr -a SMet Bete Lots itt ofdesa Bae 3a. tft trou se a Peer ners acid aera P va 7 is aay mae ~ n hud ft sost deibsams otyed Oivore : ee fr =} tin peryeg te rh ge a ey = one pao oa “EEG gol edn: aid dyotgvoidd sseorsnt NagNS Sits Pa bee Hives rf Psd arr es ot eee ot Bad od iLiw sow s £ demgud yd =fis If after careful examination you decide to treat with an insecticide, 1-1/2 lb. of Sevin per acre, or 1/8 to 1/4 Ib. of dieldrin, or 1-1/2 lb. of toxaphene will kill the worms. But absolutely do not use dieldrin or toxaphene on ensilage corn. Use Sevin in these cases. If there is any possibility of drift of either dieldrin or toxaphene onto dairy hay or pasture, use Sevin. If you apply dieldrin to corn for grain, do not harvest for 60 days. There is no time limit between toxaphene application and corn grain harvest. There is no time limit between application and forage harvest when using Sevin. Pupation of first-generation corn borers is well under way, and moth emer- gence and egg-laying for a second generation have started. We also found some eggs hatching this week. Although this early egg-laying is of little importance to the field corn grower, it is important to the commercial grower of sweet corn. Canners, particularly in central and north-central Illinois, should begin a control program now. Protect corn that is 10 days or more from harvest to avoid any possibility of worm contamination of the final product. Grasshoppers are concentrated in some spots in fence rows and similar areas. Sevin, malathion, diazinon, toxaphene, or dieldrin applied to these concentrations of hoppers will control them. However, read the label to determine whether the insecti- cide can be used on a particular crop and the interval required between application and harvest. Northern corn rootworm adults have been emerging for the past two weeks. These green beetles concentrate on the fresh silks. But unless there are many on each silk and they are cutting pollinating silks severely, control of adults is not profit- able. Caution: Before applying insecticides, read the labels carefully and follow all precautions. This will not only insure personal safety, but will also eliminate insecticide residue hazards. For a list of general precautions to use when handling and applying pesti- cides, write to 280 Natural Resources Building, University of Illinois, Urbana, I1li- nois, for "Safe Use of Pesticides." KIKI This weekly report was prepared by H. B. Petty, Steve Moore, and C. E, White, Illinois Agricultural Extension Service and Illinois Natural History Survey, in coop- eration with the USDA Agricultural Research Service, Plant Pest Control Branch, from information gathered by entomologists and cooperators who send in weekly reports from their own localities. NOT FOR PUBLICATION - Special Note to Farm Advisers: A news release from Wisconsin this week reported that five dairy farmers were "off the market" because of DDT contamination of milk produced on their farms. In three cases the cattle were fed DDT-contaminated ensilage made from last year's sweet corn. The other two cases are still under investigation, but DDT-contaminated fly spray is being checked as a possibility. Most Illinois canners have been and are using Sevin. This use is legal and the ensilage can be fed. Many vegetable growers use DDT, but then the ensilage and fodder can not be used. You, as well as your dairymen, should be aware of the possi- bility of contamination of sweet corn fodder and ensilage and guard against it. sh voy noivaninsexe Iiteiso tedts TL ao H\f of BYE to .o458 req mived ‘to vl gon of yfledutords du@ .emrow scit Lid nk os tey to .of a\ eet eet 6 2 fo sisrasxes c np Kee ery roo 9asifast a . i. stutesg vo ved yrisb odnao arvoderencod stent .aysh OS sot dzavrad dor of ywkers «cot wronm od oivybletbh vlaqa voy tH os ak ared? sie a ghera scros ay mors ortenosxot ecw time l spt on Bk ifyar : seoudsd g Chat emis Ome ie ew 1 : getot tsyornoue tay wae >a Pa O04 : = RRO bas sonse eidd darrort pee nist potdoded dusdxcoomi af ,rewory aos blelt favtaso-didon bie Leniaso ni yluelvotineg MoxTt Som «io 2¢ed oe al tedtd aroo soasord wouboug Is ait to soksanimetaos igs Snoose rote 8 fob + ad od £ yrsnined aay MSYAoTg an MIGwW IC LP) Ch ys ‘n 2 h 3 Mm Bsa] Fel, “ede perenne sna tiniste: * - oltsetlygs asewied Sertuper Sowheos “Ltew aes no bsag od aso sbro aJasvisd Soe Pemcos stoma) ead seers sean? s yvods Bris fife ald NOLTuBO ate ie enema avin watortusosyg Lis case aubrasy sbkortosant Merrie ofonro Be OS) bereose TEC iseccerres en hd ae ak svedt tl ..eseso sees mk srtvee aU Lon Gf FOR IMMEDIATE RELEASE July 31, 1964 INSECT SURVEY BULLETIN NO. 16 This is the sixteenth in a series of weekly bulletins on the general insect situation in Illinois (fruit insects excepted), prepared by entomologists of the University of Illinois College of Agriculture, Illinois Natural History Survey and cooperating agencies. It is designed to forewarn people in Illinois of impending changes in insect activity and to suggest abbreviated control meas- ures. These reports indicate only general trends. Each individual should check his own fields to determine local conditions. Corn borer: From 40 to 75 percent of the first-generation borers have now pupated, and 2 percent of them have already emerged as moths. These moths are beginning to deposit eggs on late corn. Pupation and emergence, although slightly later than last year, are earlier than in some other years. Also first- generation corn borer populations this year were about half as great as those of last year. Fall armyworms, varying in size from newly hatched to mature, are abun- dant in some late fields of both sweet and field corn insouth-central and south- ern Illinois. Control measures in field corn are questionable, as the corn will probably grow away from the damage. Furthermore, by the time the infestation is found, the worms have usually burrowed deep into the whorl, where it is extremely difficult to reach them with any insecticide. In sweet corn, 1 1/2 pounds of DDI or Sevin per acre will control the small worms when infestations are discovered early. After the worms are large, there is no use to attempt control unless they are migrating from the tassel to the ear. Do not use DDT on corn to be fed as ensilage, fodder or stover. True armyworms have matured rapidly, and most of them have pupated. The few that remain will not be of major concern. Corn earworm control information is being requested by seed producers, since earworms can cut across the tops of the kernels, making them unfit for seed. This damage may occur if the earworm infestation is as intense as is expected. Use DDT or Sevin as earworm sprays when eggs are found on silks, usually on late corn. Use Sevin if the corn is to be used for ensilage, fodder or stover. Corn leaf aphids are plentiful in some fields. As is true of earworn, seedsmen are the ones most interested in aphid control, but some cash-grain farmers are also interested. Definite information on damage is meager. We know that a severely infested plant may be barren and that heavy infestations can cause light- weight ears. But we can not give a good rule of thumb on how large the infesta- tion should be before treatment will be profitable. The tendency toward barrenness varies greatly and is influenced by hy- brid, planting rate, moisture, fertility and perhaps other growth factors. Some studies have shown that an average of 40 percent of the plants severely infested by aphids were barren. That is, if 10 of 100 plants in a field are literally loaded with aphids, four of them, or 4 percent, will be barren. However, this figure varies tremendously with different hybrids. In counting infestations, do not include sucker plants, as they are commonly infested. 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