£ HsricttWw££i^ Ilibcral Hrts Mptgthnolojgg EXPERIMENT STATION LIBRARY BuUetin 294 December, 1936 THE UNIVERSITY OF NEW HAMPSHIRE AGRICULTURAL EXPERIMENT STATION DEPARTMENT OF AGRICULTURAL CHEMISTRY Inspection of Commercial Fertilizers for 1936 MADE FOR THE STATE DEPARTMENT OF AGRICULTURE T. 0. Smith and H. A. Davis THE UNIVERSITY OF NEW HAMPSHIRE DURHAM, N. H. EVANS PRINTING CO. CONCORD, N. H. INSPECTION OF COMMERCIAL FERTILIZERS MADE FOR THE STATE DEPARTMENT OF AGRICULTURE The inspection of commercial fertilizers reported in this bulletin was made under the direction of the Hon- orable Andrew L. Felker, Commissioner of Agriculture. The state inspector, Mr. Eugene D. Sanborn, collected samples of 112 brands of fertilizer materials which were offered for sale by dealers or had been delivered to consumers during the year ending June, 1936. The general character of the fertilizer materials collected is shown by the following classification: Complete fertihzers 82 Phosphoric acid and potash 1 Superphosphate (acid phosphate) .— 6 Ammo-phos 1 Nitrate of soda 2 Calnitro 1 Cyanamid 1 Sulphate of ammonia 2 Muriate of potash 3 Ground bone 6 Tankage 1 Natural manures 6 112 THE FERTILIZER LAW The state official charged with the enforcement of the fertihzer law is the Commissioner of Agriculture. Copies of the law may be obtained from his office in Concord. All inquiries concerning the law and all mat- ters relative to the registration of brands should be addressed to his office. 2 N. H, AGR. EXPERIMENT STATION [Bulletin 294 The purchaser's refusal to buy a fertihzer which does not conform to the law in every respect, will not only assist in the enforcement of the law but will at the same time insure himself the protection of the law. If the buyer fails to assure himself the legal require- ments have been met, he accepts the fertilizer at his own risk. Whether or not the purchaser familiarizes himself with the complete text of the fertilizer law, he should not accept from the dealer any bag of fer- tilizer which is not tagged and guaranteed in compliance with the law. The law governing these matters fol- lows: "Every lot or parcel of commercial fertilizer or fer- tilizer material sold or offered or exposed for sale within this state shall be accompanied by a plainly printed statement, clearly and truly certifying the number of net pounds of fertilizer in the package, the name, brand or trademark under which the fertilizer is sold, the name and address of the manufacturer or importer, the location of the factory, and a chemical analysis stat- ing the minimum percentage of nitrogen, of available phosphoric acid and of water soluble potash expressed in whole numbers. **No fertilizer or fertilizer material containing the three essential fertilizing elements, nitrogen, phos- phoric acid and potash may be sold or oifered for sale if the total minimum plant food nutrients contained therein is less than fourteen per cent by weight, pro- vided however that natural animal and bird manures shall be excepted from the provisions of this section." The chief purpose of the fertilizer law is to protect the consumer against the misbranded products which would doubtless soon appear upon the market if the sale of fertilizer was not under state regulation. The value of a fertilizer depends mainly upon its content of available plant food, particularly nitrogen, phosphoric acid and potash. The presence of these constituents can only be determined by a chemical analysis. To in- Dec, 1936] fertilizer inspection, 1936 3 sure that they are being furnished by the manufacturer in the guaranteed amounts, it is necessary that each brand of fertihzer offered for sale be officially inspected and analyzed one or more times each year. When failure to meet the guarantee is proven by chemical analysis, the prosecution or seizure provisions of the law may be invoked. In Table I are tabulated the grades of complete fer- tilizers analyzed in this year's inspection, the number of brands found by the inspector in each grade, the average per cent of nitrogen, of available phosphoric acid, and of water soluble potash of the brands in each grade and the average retail price per ton. TABLE I. CO IS c § § 'u a o o p. u fep'.'S ^1 a o S_2§ P-g fH a Formula 01 bl o-^-S yO Q tr o ^:Z t> Wi « a w. 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E\ '^ C H c c^ o s CO r-l H CI) < 4-> o & CO c o o 4-> pC m m ft X ;h ^ p. 01 p< CS 3 n «bQ w Dec, 1936] fertilizer inspection, 1936 9 ■«:fi CT3 "Xi CO 00 OS so o] m o • -* o e 00 "^ o CO ;o oi o6 -* c CD CO in eg ; (M iH tH 1-1 i-H 1-1 oooooooooo • OOQOOOOO • oooooooooo • oooooooo • «o 00 -^ o to i;o cTrot>cD-^cDcg ; 00 1^ th ; • tH'-i OJ •OOOOOOOOQ • o O O O O O 0,0 (M • •ooooooooo • in oooooooo • ■ xi< ^ '^ CO 00 00 CO oi (M . o in-^'-^int>o6o6i-i . 1-1 1-1 OJ a ft S-i o O f— H c5 5-10-10 ure .... e q; . . . . . . -I-^ CO • • • u • u u • ■ ^.^ ^-i-^-j2 c3 c^ c^ c3 cd.KJ c3 cd c^ CC CQ C5 10 N. H. AGR. EXPERIMENT STATION [Bulletin 294 VI O punoj[ paa^uBJC^nf) < .r-t O ft o • I— I <1 puno^j p88^UBJBnO o Eh puno^j paa:;uBaBnf) 13 o u puno^j «5 00 kO 00 00 I-; eo CO oi tre -^ o o 1-1 CO »c O O O O O (N !>; ■^ rji o i> eo iri c^- 4.00 4.00 10.00 1 OO OOOOO O O O O O o o '^ tJ O t> CD lO -^ 1-H 1-1 10.59 8.00 8.62 (M CO O t- (M t> O T-; o o (>) ic o >J^_ O 00 00 00 ?D 00 «d 1-1 1-1 10.00 8.00 8.00 OOOOOOO O O O O O O o O CC 00 00 i^D 00 CD 1-1 1-1 10.87 8.23 8.89 1-1 Cvl o ix> -^ c- o Ti; ^ oj in i> oj i-H o 00 00 00 eo 00 t>^ 1—1 1-1 ; • • .■::'.;:: (M C-OO a; 00 00 oj coco o o 1— 1 -^ o or c; C5 Ci 00 CC 00 ;D «D (N CO CO Tl^ CD paaci.UBJBnf) ooo poo CO -^ ^ o o o o o o o' o p o o p p p CO -^ -^ Lc ■{> t- 00 o o u 0) m m C8 5S o -(J to o o TO O) l> o ^1 o o rf o ' -^1-1 tHoOOO I I i CO Tjl -rji 0) o 03 K S„" s 'S <1 CS 13 o o a> 0) Qj o) a> ^ ^ ^ ooo ft o ^ o ■ -2 V=?°?oo«?ooS ^^^ict-c^oo "S 'S "2 'o '5 '^ '^ C C C c c c c 03 g OS uj rt 03 rt PQ pg m pq fq PQ pq O O CJ o w o o cS CS cS cS cS cS cS s s s s s s s 'C 'C-s^-fll-fH-C-Sn U U U i-t u u ^ 4) m a) 03 Qj (U QJ Dec, 1936] FERTILIZER INSPECTION, 1936 11 OtH L-Ci o o o • (M 00 i-H • C5 o o • -^ (M CO iO 00 ■ 00 -^ t> o c- oo oo o o d CO •ooct> • qo_q • o o o o o • o o c> q q i 00 -^ t> o t- I-H o 00 c- od mooaioOM '^_ <^^ O '^/^^ 'ooc^oodkoodooooco 00 00 oqo dr-H om^Loooocoo'^io iniot-;t>i-Hoc^c^Ciio oioicocic-oodciocci eg I-H tH • ■ • • in • • • CO • • ■ oi '. 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EXPERIMENT STATION [Bulletin 294 C5 ni 1— 1 -^ (M T-H c^ 00 COO t q m punoj OiOfO t> '. ^ CO o"ooo O o^ o o ooo q o P-, p89:juBJBnQ O ?DC^ C> ! ^ ^" rH CO t- O C- CD lO ^ CO CD 00 O CO 00 00 3 puno^ CO t^o as TJH r-H o 3 rt I— 1 tH tH < r^ c3 oooo O o > o oo o o o o < paa^juBJBnf) CO t-^TH 00 : d o" O r-i T-H 1— 1 O LO LO t~ lO CD cqcoooo ^ Oi C^ M puno^ij t>c^i-ic in im' 1—1 o 13 o r-( I- C^ i-i 1—1 • o -o o . 7 E-i • o .c o , ^ paa^uBJBn^ 1— 1 T- CO (M ■ • ■^ i> eg C^ !M CO 1—1 r-H liO CD C q th q fi punoj[ C-^CO T-H Tt CO ■^' ic 0) o O o'lO C t~ o ~o" ^ o o oa c Tt O o ■4J p9a:;uBJBn9 c-^ CO i-I T^t C^ '^ i6 •TS • C '. "^ • M •rO • 3 ■ !-< •-C icc Q- >H . C/3 13 . a> C ;3 o C • . 03 4-1 • Ol • bD • QJ :> f-l ^ C3 a o • oT O J' ertilizer Manure Market ^a • hJ il :'^B; oep> PAS ^nQ.385 806