U.53U.7
116c
no. 897
1985
cop. 5
UNIVERSITY OF
Digitized by the Internet Archive
in 2011 with funding from
University of Illinois Urbana-Champaign
http://www.archive.org/details/insectpestmanage71985univ
3.C
c mi
tio.7
UNIVERSITY OF ILLINOIS
AGRICULTURE LIBRARY
CIRCULATING COPY
AGRICULTURE LIBRARY
1985 Insect Pest Management Guide
COMMERCIAL VEGETABLE CROPS
AND GREENHOUSE VEGETABLES
Restricted-use insecticides are identified with an asterisk (*).
You must be certified as a pesticide applicator to use restricted-use pesticides.
See your county Extension adviser in agriculture for information.
Commercial vegetable gardeners find it impossible to
produce vegetables profitably unless they control insects at
maximum efficiency and minimum cost. The housewife of
today will not accept unsightly wormy vegetables; not only
are wormy fruits and vegetables unappetizing but the
waste from trimming increases food costs. Thus the com-
mercial vegetable gardener must produce a quality product
that is acceptable and safe to the consumer. Careful use
of the right insecticides will enable him to do this.
Insect pest-management programs, which include the
wise selection of cultural, mechanical, biological, and
chemical methods, are suggested for the major insect pests
of vegetable crops. Insecticides, though, are still the most
efficient means of managing most insects.
This suggested insecticide guide has been prepared for
use by Illinois commercial vegetable farmers; it is not for
home gardeners, who should use only those insecticides
that are extremely safe to handle, apply, and store. Fur-
thermore, the commercial vegetable gardener must use a
wider variety of insecticides than the home gardener in
order to obtain maximum insect control at the least cost.
In using insecticides, read the label and carefully follow
the instructions. Do not exceed maximum rates suggested;
observe carefully the interval between application and har-
vest, and apply only to crops for which use has been ap-
proved. Make a record of the product used, the trade name,
the percentage content of the insecticide, the dilution, the
rate of application per acre, and the dates of application.
Some of the insecticides suggested here can be poison-
ous to the applicator. In using them, the commercial grower
is expected to use precautions to protect himself, his work-
ers, and his family from undue or needless exposure.
In using this guide, always refer to the table on the next
page, which lists the limitations and restrictions on use.
These limitations apply to the vegetables as human food.
If you use any portion of a vegetable for livestock food
(tops, stalks, etc.), refer to the label for instructions as to
the interval required between application and feeding.
The chemical names used in these tables may be un-
familiar to you. These names are the common coined
chemical names and as such are not capitalized. Trade
names are capitalized. In the table of limitations the com-
mon names are listed first. If the trade name is more com-
monly used, it is listed in parentheses following the
common name. Throughout the tables of suggestions, how-
ever, the common name is used if there is one. In case you
have a question, refer to the table of limitations.
These suggestions are subject to change without notifi-
cation during the growing season.
Requested label clearances for a few uses of insecti-
cides, carriers, and solvents are uncertain for 1985, since
many requests have not been officially cleared. Anticipating
needed changes in labeling, we began modifying these sug-
gested uses a few years ago.
Check with your county Extension adviser if you are in
doubt about the insecticide you plan to use. We will make
announcements of label changes through newsletters and
the news media to keep you up to date.
Insecticides are being classified for general use or re-
stricted use by the U.S. Environmental Protection Agency.
A person wishing to use an insecticide classified for re-
stricted use must be certified as a private or commercial
pesticide applicator by the Illinois Department of Agri-
culture. Contact your county Extension adviser in agricul-
ture for details on this program.
A few insecticides have been classified at this time.
More will be classified later.
Suggestions for the effective use of insecticides from a
practical standpoint are based on available data. Soil tex-
tures, pH of the soil, rainfall, slope of the field, wind
velocity at planting, method and accuracy of application,
and other unpredictable factors affect efficiency.
Prepared by Roscoe Randall, Extension Entomologist
UNIVERSITY OF ILLINOIS AT URBANA-CHAMPAIGN COLLEGE OF AGRICULTURE COOPERATIVE EXTENSION SERVICE
In cooperation wirh ILLINOIS NATURAL HISTORY SURVEY CIRCULAR 897 (revised annually) November, 1984
LIMITATIONS FOR FIELD VEGETABLES IN DAYS BETWEEN APPLICATION AND HARVEST
AND OTHER RESTRICTIONS ON USE OF INSECTICIDES IN ILLINOIS
(Blank spaces indicate that the material is not suggested for the specific use in Illinois)
Insecticide
Broc- Brussels Cab- Cauli- Horse- Rad- Tur-
Beans Peas coli sprouts bage flower radish ish nip
Onions
Egg-
plant
Pep-
pers
Toma-
toes
acephate (Orthene) ....
*azinphosmethyl (Guthion)2
Bacillus thuringiensis3
carbaryl (Sevin)
carbofuran (Furadan) ....
chlorpyrifos (Lorsban) .
Dasanit
*demeton (Systox)
diazinon
dicofol (Kelthane)
dimethoate (Cygon)
Dyfonate
ethion
*fenvalerate (Pydrin)4
malathion
*methomyl (Lannate)
*mevinphos (Phosdrin)2. . . .
♦Monitor
naled (Dibrom)
oxydemetonmethyl
(Meta-Systox R)
*parathion2
*permethrin (Ambush,
Pounce)
phorate (Thimet)2
rotenone
trichlorfon (Dylox)
14
7E
OE
OE
3E,N
1,5 A
15
7
21
15
0
0
0
0
3
3
3
3
3
C
10
7
C
3
3
3
1
21
1
7
3
3
21
1
3
C
3
7
1
1
35
1
7
C
3
7
3
3
28
1
7 7
1H ;ih
\\ 21
10 7
1H 1H
15
22
21
21
3, 14A
10
14
3
3
4
10
28E
C, D
10
C,D
C
7F
0
21B
3
10
0B
1
21
IK
1
2
1
21
Insecticide
Pota-
toes
Col-
lards
Kale
Let-
tuce
Spin-
ach
Swiss
chard
Sweet
corn
Cucum-
bers1
Mel-
ons1
Pump-
kins1
Squash1
Winter Summer
Bacillus thuringiensis3
carbaryl (Sevin)
carbofuran (Furadan) ,
chlorpyrifos (Lorsban)
diazinon ,
dicofol (Kelthane)
dimethoate (Cygon)
Dyfonate ,
*fenvalerate (Pydrin)4.
isofenphos (Amaze)
malathion ,
*methomyl (Lannate) ,
*mevinphos (Phosdrin)2 ,
Mocap
naled (Dibrom)
*parathion2
*permethrin (Ambush, Pounce).
phorate (Thimet)2 ,
rotenone ,
terbufos (Counter)
trichlorfon (Dylox)
0
c
"l
2
15
0
C
3
2
3
0
C
0
C
3
2
10 15
3F
0
C
7
2
15
* Use restricted to certified applicators only.
1 Apply insecticides late in the day after the blossoms have closed
to reduce bee kill.
' For use only by professional applicators or commercial gardeners.
* The trade names are Bactur, Dipel, Thuricide, and Sok Bt.
4 Only root crops indicated on label can be planted following ap-
plication. For all other root crops, wait 12 months before planting.
REENTRY INTERVALS FOR WORKER PROTECTION
Insecticide
Hours
azinphosmethyl (Guthion) 24
demeton (Systox) 48
ethion 24
parathion 48
A. If tops or stover are to be used for feed.
B. Not more than twice per season.
C. Soil applications at planting time only.
D. Do not use on green onion crop.
E. Do not use tops for feed or food.
F. Not more than 3 times per season.
G. Not after edible portions or heads begin to form.
H. Not more than 8 times per season.
I. Crops other than corn and soybeans may be planted 10 months
after application.
J. Not more than once per season.
K. Do not exceed 2 lb. a.i. per acre.
L. Not more than 4 applications per season.
M. Not more than 6 applications per season.
N. Do not exceed 0.4 lb. a.i. per acre.
Workers must wear protective clothing if they enter treated fields before the time
intervals shown at the left. They must also wear protective clothing for all other
insecticides applied if the spray has not dried or the dust has not settled.
M?X
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CABBAGE AND RELATED COLE CROPS
Insect
Time
of attack
Insecticide
Pounds of active
ingredient per acre
Placement
Timing of application
Cabbage maggots1 All season
(NHE-44)
diazinon
Dvfonate
Broadcast
Disk in just before planting. Use only for
cabbage, cauliflower, and broccoli.
diazinon
granules
Furrow At time of planting; on turnips a drench-
ing spray of 1 lb. diazinon should be
applied 30 days following treatment.
*azinphosmethyl
diazinon
Lorsban
Lorsban
3oz.W.P.or2oz.
E.C. per 50 gaJ.
transplant water
4 oz. per 50 gal.
transplant water
3 oz. 4E per
1,000 ft. of row
1 oz. 4E per
1,000 ft. of row
Furrow
6 fluid oz. transplant water per plant.
Transplant drench to cabbage, broccoli,
and cauliflower.
Radishes only.
Aphids (NHE-47) All season
Thrips (NHE-48)
*azinphosmethyl
dimethoate
malathion
*mevinphos
*parathion
X
0.3
1
X
0.4
Foliage When aphids appear, but before leaves
begin to curl.
Cabbage loopers
(NHE-45); dia-
mond-back moth
larvae; imported
cabbage worms
All season
Bacillus
thuringiensis
*fenvalerate
*methomyl
*Monitor
*permethrin
See rates
on label
0.1-0.2
0.45-0.9
1
0.1-0.2
Foliage When small worms first appear, and
about every 5 to 7 days thereafter. Thor-
ough spray coverage of foliage is im-
portant.
Cutworms
At planting
*fenvalerate
trichlorfon
0.1-0.2
1
Base of plants As needed.
Flea beetles and All season carbaryl
leafhoppers *fenvalerate
0.1-0.2
Foliage
As needed.
E.C. = Emulsion concentrate ; W.P. = wettable powder.
* Use restricted to certified applicators only. ' Maggots are resistant to diazinon in some areas of Illinois.
COLLARDS, KALE, LETTUCE, SPINACH, SWISS CHARD
Insect
Time
of attack
Insecticide
Pounds of active
ingredient per acre
Placement
Timing of application
Aphids (NHE-47)
All season
diazinon
dimethoate
*mevinphos
naled
*pa rath ion
X
0.3
X
1
0.4
Foliage
As needed.
Cutworms
On seedling
plants
trichlorfon1
1
Base of plant
and soil
When first damage appears.
Leafhoppers
All season
carbaryl
dimethoate
malathion
0.3
1
Foliage
When first leafhoppers appear, and as
needed.
Caterpillars
(NHE-45)
All season
Bacillus
Ihuringiensis
*methomyl2
naled
See ratea
on label
0.45
1
Foliage
When small worms first appear and every
5 to 7 days thereafter.
Leaf miners
All season
diazinon
dimethoate
*parathion
X
0.3
0.4
Foliage
When first miners are observed.
Flea beetles
AH season
carbaryl
rotenone
1
X
Foliage
As needed.
1 Do not use on spinach or Swiss chard.
1 Use limited to lettuce and spinach only.
BEANS
Insect
Time
of attack
Insecticide
Pounds of active
ingredient per acre
Placement
Timing of application
Seed maggots
(NHE-27)
All season
diazinon 50% W.P.1 3/5 oz./bu. Seed
Lorsban25%W.P.» 2 oz./bu. Seed
Treat seed no longer than 3 months before
planting.
phorate granules
1J-3 Soilband Place on either or both sides of row at
planting but not in contact with seed.
Bean leaf beetles Early and carbaryl
(NHE-67) late season malathion
Foliage When feeding first appears and weekly
for 2 or 3 applications as needed.
Leafhoppers
All season
carbaryl
1
(NHE-22) and
dimethoate
0.3
plant bugs
malathion
1
(NHE-68)
*methomyl
0.45
Foliage Before plants become yellow and stunted.
Repeat applications at weekly intervals
as necessary.
phorate granules
m
Soilband
As for seed maggot.
Mexican bean
beetles
Midseason and
late season
carbaryl
malathion
h
i
Foliage
When occasional leaves show lacework
feeding.
phorate granules
ih
Soilband
As for seed maggot.
Aphids (NHE-47) All season
dimethoate
malathion
0.3
1
Foliage Usually applied when a few aphids can be
found on each plant, but before leaves
begin to curl and deform.
phorate granules
IX
Soilband
As for seed maggot.
Blister beetles
(NHE-72)
Midseason and
late season
carbaryl
IK
Foliage
As needed.
Corn earworms
(NHE-33)
Corn borers
Late season
acephate
carbaryl
*methomyl
%
0.45
Foliage
As needed, but usually after August 20.
Worms may be present before bloom.
Mites
Midseason and
dicofol
0.4
late season
dimethoate
0.3
malathion
1
Foliage As needed, but especially during drouthy
periods particularly if carbaryl has been
used on crops.
phorate granules 1 J^
Soilband
As for seed maggot.
* Use restricted to certified applicators only. * No restrictions when used as recommended.
CUCUMBERS AND OTHER VINE CROPS1
Insect
Time
of attack
Insecticide8
Pounds of active
ingredient per acre
Placement
Timing of application1
Striped and
spotted cucumber
beetles (NHE-46)
Seedling to
mature plants
carbaryl
carbofuran
*parathion
1
2
H
Foliage
Soil
Foliage
When beetles first appear; as often as
necessary thereafter.
Aphids (NHE-47)
All season
diazinon
dimethoate1
malathion
*parathion
0.3
1
H
Foliage
When aphids become noticeable.
Squash bugs
(NHE-51)
All season
*fenvalerate
*parathion
trichlorfon'
0.2
1
Foliage
Do not apply until first eggs are found
hatching (about June 15 to July 15); con-
trols only nymphs.
Leafhoppers
July-August
*fenvalerate
malathion
dimethoate1
0.1-0.2
1
0.3
Foliage
As needed.
Squash vine
borers
June-
September
carbaryl
*fen valerate
1
0.1-0.2
Base of stem
for 3 ft.
Weekly applications when vines begin to
run — usually 5 applications.
Pickle worms
August-
September
carbaryl
*f en valerate
1
0.1-0.2
Foliage
Weekly applications, beginning in late
August.
Mites
July-
September
dicofol
malathion
*parathion
l
Foliage
As needed.
Cutworms
(NHE-77)
April-June
carbaryl
*fenvalerate
2
0.2
Base of plants
As needed.
* Use restricted to certified applicators only.
1 Spray vine crops with insecticide only late in the day after blossoms have closed to reduce bee
* Pumpkin is the only vine crop for which trichlorfon can be used for squash bug control.
kill. ' Do not use dimethoate on cucumbers.
TOMATOES AND EGGPLANT
Insect
Time
of attack
Insecticide
Pounds of active
ingredient per acre
Placement
Timing of application
Cutworms
(NHE-77)
Early and
midseason
carbaryl
fenvalerate
trichlorfon
2
0.1-0.2
1
Base of plants
or loliage
As needed.
Flea beetles
May-June
carbaryl
rotenone
2
0.2-0.4
Foliage
Apply every week as long as needed.
Aphids (NHE-47)
May-July
diazinon
dimethoate1
malathion
0.3
1
Foliage
As needed, but before leaves curl.
Cabbage
July-
Bacillus
See rates
Ioopers
September
thuringiensis
on label
*fenvalerate1
0.1-0.2
*methomyl
0.45-0.9
Foliage
When Ioopers are present.
Corn earworms
Corn borers
Hornworms
July-
September
carbaryl
*fenvalerate1
*methomyll
2
0.1-0.2
0.45-0.9
Foliage
Add to weekly applications of fungicide
sprays beginning at first fruit set when
first small worms appear.
Mites
July-
September
carbophenothion
dicofol
malathion
1
H
1
Foliage
As needed.
Russet mites
July-
September
*parathion
sulfur dust1
sulfur spray2
0.4
10
10
Foliage
As needed.
Blister beetles
(NHE-72)
June-
September
carbaryl
1^
Foliage
As needed.
Fruit flies and
picnic beetles
August-
October
carbaryl
diazinon
2
Foliage
When flies or beetles first appear.
* Use restricted to certified applicators only. ' Use cleared only on tomatoes. * No limitations on use.
Insect
Time
of attack
Insecticide
PEPPERS
Pounds of active
ingredient per acre
Placement
Timing of application
Aphids (NHE-47) May-July
dimethoate 0.3
demeton %
*methomyl 0.45
oxydemetonmethyl J^
acephate \^
Foliage Only when aphids are present. Add to
borer spray when it is being used.
Corn borers
Late season
carbaryl
acephate
Foliage and When fruit is present on plant. Apply
fruit every 5 days when borers are present.
carbofuran
2-3
Soilband to Make 2 applications; first, 3 weeks after
transplant transplant, second, 5 weeks later.
* Use restricted to certified applicators only.
ASPARAGUS
Time
Insect of attack
Insecticide
Pounds of active
ingredient per acre
Placement
Timing of application
Asparagus beetles Early and mid-
(NHE-49) season on spears
carbaryl1
malathion1
1H
1
Spears and
ferns
As needed, not more often than every 3
days.
and ferns
rotenone1
0.2-0.4
Spears
As needed.
1 One-day restriction between last application and harvest
SWEET CORN
Insect
Time
of attack
Insecticide
Pounds of active
ingredient per acre
Placement
Timing of application
Soil insects
(NHE-26, 27, 43)
April-August
Counter
Dyfonate
Furadan
Lorsban
Mocap
phorate
Row
Apply on soil surface behind planter shoe
and ahead of press wheel. Rootworm con-
trol may be needed if the corn was not
sprayed the previous year.
Cutworms
(NHE-38)
April-June
carbaryl1
Lorsban 4E
2-3
1%
Base of plants When first damage appears.
Broadcast
Flea beedes
(NHE-36)
April-July
carbaryl1
carbofuran 15G
m
Foliage As necessary.
Soilband
Japanese beedes
(NHE-32)
July-
September
carbaryl1
Ear zone As necessary.
First-generation
corn borers
June
carbaryl1
2
Foliage If needed, make first application when
tassel ratio is 30 to 40. Repeat in 4 to 5
days.
Second-generation June-
carbaryl1
2
corn borers and September
carbofuran 4F'
H
corn earworms*
*fenvalerate
0.1-0.2
(NHE-33)
*methomyl
0.45
*permethrin
0.1-0.2
Ear zone Fresh market corn: At first silk and
every 2 to 4 days for 5 to 8 applications.
Canning corn: Observe light traps for
earworm and borer adults, or keep a
record of the heat units. When 1,500 or
more heat units have accumulated, be-
gin a spray program. As an alternative,
begin at 30 to 50% silk and every 3 to 5
days thereafter until the corn is within
8 to 12 days of harvest.
Sap beedes
(NHE-10)
Picnic beedes
July-
September
carbaryl1
diazinon
malathion
*parathion
2
1
1
M
Foliage
When adults first appear in field; usually
between pollen-shedding and silk-drying.
Corn leaf aphids
(NHE-29)
July-
September
malathion
*parathion
1
Foliage
As needed to produce attractive ears for
fresh market.
Fall armyworms
July-
September
*methomyl
*parathion
0.45
Foliage
Apply to ear zone when whorl feeding is
evident.
* Use restricted to certified applicators only.
1 During pollen shed, apply carbaryl as late in the day as possible (preferably after 4 p.m.) to reduce bee kill. * Adding 0.5 to 0.75 pound of
parathion or 0.25 to 0.45 pound of methomyl to carbaryl improves earworm control. * Corn borer control only.
ONIONS
Insect
Time
of attack
Insecticide
Pounds of active
ingredient per acre
Placement
Timing of application
Onion maggots
(NHE-50)
All season
diazinon
W.P.
ethion W.P.
H-l for 40-50 lb.
of seed
1 for 40-50 lb. of seed
Seed
Seed treatment for set onions only. Use
lighter dosage of diazinon on sandy, highly
mineral soils.
Dasanit granules 1
diazinon granules J^-l
Dyfonate 1
ethion granules J^-2
Furrow
Use 1 lb. active ingredient per acre for
rows 12" apart; % lb. for rows 18" apart;
H lb. for rows 24" apart. Up to twice
these amounts are needed for ethion on
muck soils. Do not use Dasanit or Dyfon-
ate on green onions.
diazinon
Broadcast Preplanting; disk into upper 1 to 2 inches
of soil. Supplement with foliage spray
below.
diazinon
malathion
J4 Foliage
1
Supplemental to soil treatment. Make
first application when first adult flies are
seen; make another 1 week later. From
then on only as necessary.
Foliage When injury first appears and every 10
days as necessary.
Thrips (NHE-48) Midseason and diazinon
late season malathion
•azinphosmethyl
1
* Use restricted to certified applicators only.
POTATOES
Time
Pound
3 of active
Insect
of attack
Insecticide ingredient per acre
Placement
Timing of application
Flea beetles
May-July
carbaryl
carbofuran granules
carbofuran spray
fenvalerate
1
3
1
0.1
Foliage
In furrow
Foliage
Foliage
When damage first appears on the leaves.
Repeat as needed.
Planting time.
As needed.
As needed.
*methomyl
*permethrin
0.45
0.1
Foliage
Foliage
As needed.
As needed.
Colorado potato
beetles; cutworms;
potato leafhoppers
(NHE-22)
May-July
carbaryl
carbofuran granules
carbofuran spray
dimethoate
*fenvalerate
2
3
1
0.3
0.1
Foliage
In furrow
Foliage
Foliage
Foliage
As needed.
Planting time.
As needed.
As needed.
As needed.
*permethrin
0.1
Foliage
As needed.
phorate granules
2-3 Soilband Place on either or both sides of row at
planting, but not in contact with seed.
Use the lower rate on sandy soils, the
heavier rate on heavy soils. Do not use on
muck soils.
Aphids (NHE-47) All season
dimethoate
0.3
*methomyl
0.45
*parathion
J4
Foliage
As needed.
phorate granules
2-3
Soilband
Same as for leafhoppers.
Blister beetles All season
(NHE-72)
carbaryl
1H
Foliage
As needed.
Wireworms (NHE-43) All season
White grubs (NHE-23)
phorate granules
2-3
Soil
Preplanting, disk in; or use as soilband
at planting.
Grasshoppers July-
(NHE-74) September
carbaryl
dimethoate
0.3
Foliage
As needed, control in fence rows, road-
sides, ditch banks, etc., before migration.
* Use restricted to certified applicators only.
PEAS
Insect
Time
of attack
Insecticide
Pounds of active
ingredient per acre
Placement
Timing of application
Caterpillars,
including loopers
June
*methomyl
fenvalerate
0.1
Foliage
Before harvest if worms are present.
Aphids
May-June
dimethoate
H
Foliage
As needed.
* Use restricted to certified applicators only.
Obtain the following circulars on insect control from
the Office of Agricultural Publications, University of
Illinois, 47 Mumford Hall, 1301 W. Gregory Drive, Ur-
bana, Illinois 61801.
Circular 899, 1985 Insect Pest Management Guide —
Field and Forage Crops
Circular 900, 1985 Insect Pest Management Guide —
Home, Yard, and Garden
FOR ADDITIONAL INFORMATION
Circular 1076, 1985 Turf grass Pest Control
Leaflets describing the life history, biology, and habits
of some of the insects mentioned can be obtained from the
offices of county Extension advisers or by writing to Ento-
mology Extension, 172 Natural Resources Building, 607
E. Peabody Drive, Champaign, Illinois 61820. These are
indicated by an NHE number in the tables.
FOR YOUR PROTECTION
Always handle insecticides with respect. The persons
most likely to suffer ill effects from insecticides are the
applicator and his family. Accidents and careless, needless
overexposure can be avoided. Here are a few easy rules
that if followed will prevent most insecticide accidents:
1. Wear rubber gloves when handling insecticide con-
centrates.
2. Do not smoke while handling or using insecticides.
3. Keep your face turned to one side when opening in-
secticide containers.
4. Leave unused insecticides in their original containers
with the labels on them.
5. Store insecticides out of reach of children, irrespon-
sible persons, or animals; store preferably in a locked
cabinet.
6. Triple-rinse and bury or burn all empty insecticide
containers or take to an approved sanitary landfill.
7. Do not put the water-supply hose directly into the
spray tank.
8. Do not blow out clogged nozzles or spray lines with
your mouth.
9. Wash with soap and water exposed parts of body
and clothes contaminated with insecticide.
10. Do not leave puddles of spray on impervious
surfaces.
11. Do not apply to fish-bearing or other water supplies.
12. Do not apply insecticides, except in an emergency,
to areas with abundant wildlife or to blossoming crops
visited by bees. Avoid drift onto blossoming crops or onto
bee hives.
13. Do not apply insecticides near dug wells or cisterns.
14. Do not spray when weather conditions favor drift.
15. Observe all precautions listed on the label.
16. To avoid bee kill, apply insecticides after bee activ-
ity has been completed for the day; use the least toxic
materials. Warn beekeepers that you are applying in-
secticides.
Issued in furtherance of Cooperative Extension Work, Acts of May 8 and June 30, 1914, in cooperation with the U.S. Department of Agriculture. WILLIAM R.
OSCHWALD, Director, Cooperative Extension Service, University of Illinois at Urbana-Champaign. The Illinois Cooperative Extension Service provides equal
opportunities in programs and employment. 6M — 10-84 — 60122 — so
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