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EXPERIMENT STATION LIBRARY

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 Honor- able Andrew L. Felker, Commissioner of Agriculture. The state inspector, Mr. Eugene D. Sanborn, collected samples of 108 brands of fertilizer materials which were offered for sale by dealers or had been delivered to con- sumers during the year ending June, 1933. The general character of the fertilizer materials collected is shown by the following classification :

Complete fertilizer 86

Superphosphate (acid phosphate) 5

Nitrate of soda 1

Sulphate of ammonia 1

Cyanamid 1

Ground bone 3

Tankage 1

Natural manures 10

108

CHANGES IN THE FERTILIZER LAW

The Legislature of 1933 enacted two important changes in the fertilizer law. Section 1 has been amended to read as follows : Labeling. Every lot or parcel of commercial fertilizer or fertilizer material sold or offered or exposed

2 N. H. AGR. EXPERIMENT STATION [Bulletin 278

for sale Avithin 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 im- porter, the location of the factory, and a chemical analy- sis stating the minimum percentage of nitrogen, of water soluble potash and of available phosphoric acid expressed in whole numbers.

The following new section 1-a has been enacted: No fertilizer or fertilizer material containing the three essential fertilizing elements nitrogen, potash and phos- phoric acid may be sold or offered for sale if the total minimum plant food nutrients contained therein is less than fourteen per cent by weight, provided 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 low grade products which would doubtless soon appear upon the market if the dis- tribution and sale of fertilizer was not under state regula- tion. The value of a fertilizer depends on its content of available plant food, i. e., nitrogen, phosphoric acid and potash. The presence of these constituents can only be determined by a chemical analysis. To insure that these constituents are being furnished bj' the manufacturer in guaranteed amounts it is necessary that each brand of fertilizer offered for sale be officially inspected and ana- lyzed one or more times each year, AVhen failure to meet the guarantee is proven by chemical analysis the prosecu- tion or seizure provisions of the law ma}' be invoked. The state official charged with the administration of the fertilizer law is the Commissioner of Agriculture. All inquiries concerning the law and all matters relative to the registration of brands should be addressed to his office in Concord.

Dec, 1933]

FEKTILIZER INSPECTION, 1933

In Table I are given the grades of complete fertilizers anah'zed in this year's inspection, the nnmber of brands fonnd in each grade, the average analysis of each grade and the average retail price per ton.

TABLE I

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2 — 8 — 10	1	2.48	8.88	8.34	10.26	$37.00
2 — 10—2	6	2.28	10.85	10.29	2.15	28.16
2 — 12—4	3	2.22	12.73	11.97	4.15	34.32
3 — 10—4	6	all?	10.85	10.46	3.90	34.06
3 — 10 — 6	1	3.25	10.66	10.09	6.37	30.00
4 — 4—0	1	4.34	12.84	9.54	0.00	76.00
4 — 8 — 4	12	4.13	8.84	8.40	4.07	30.70
4—8 — 7	5	4.07	8.89	8.50	7.01	33.76
4 — 8 — 8	1	4.45	S.76	8.39	8.98	31.00
4 — 8 — 10	13	4.10	8.73	8.35	9.79	39.66
4 — 10 — 5	1	3.85	10.11	9.68	5.56	38.00
4 — 10 — 6	1	4.41	10.71	10.50	7.20	31.00
4 — 12 — 4	2	4.18	13.14	12.52	4.28	65.50
5—8 — 6	1	5.35	11.44	9.54	6.59	140.00
5—8 — 7	12	5.11	9.01	8.42	6.97	37.00
5 — 8 — 10	1	5.36	8.33	8 03	10.00	45.00
5 — 10 — 4	1	5.03	11.07	10.27	4.04	100.00
5 — 16 — 7	1	5.00	16.36	15.19	7.14	36.00
6 — 8—6	1	6.38	9.02	8.58	6.61	33.40
7 — 6 — 6	5	7.14	6.59	6.42	5.97	40.24
7 — 8—5	1	6.69	9.25	8.71	5.03	31.00
8—5—8	1	8.02	9.05	7.18	8.00	52.00
8—6 — 2	1	8.13	7.08	6.86	2.26	50.00
8 — 16 — 14	3	8.07	17.09	16.65	14.22	47.12
8 — 16 — 16	1	8.23	17.62	17.32	16.90	50.80
8 — 24—8	1	8.68	25.32	24.89	9.65	53.60
15—20 — 15	1	15.02	20.20	20.17	15.00	69.20
18—6—6 ,	1	17.58	7.07	7.07	7.03	54.40

CONFORMITY TO GUARANTEE

Seventy-nine of the 108 brands analyzed eqvialled or exceeded the gnarantees. TAventy-nine brands contained less than the guaranteed amount of one or more of the three constitnents, nitrogen, available phosphoric acid and water soluble potash. No brand was found deficient in all three constituents.

4 N. H. AGR. EXPERIMENT STATION [Bulletin 278

A detailed suminary of the deficiencies follows :

Nitrogen and available phosphoric acid

Nitrogen and potash

Nitrogen

Potash

Total phosphoric acid

Available phosphoric acid

Number of Brands	Total Deficiencies
1	2
4	8
5	5
14	14
2	2
3	3

29 34

The total per cent of plant food nutrients guaranteed was less than the total per cent found in only five brands. Ten samples were deficient in nitrogen. Five of these brands yvere deficient less than 3 pounds of nitrogen per ton. One was deficient 8 pounds per ton and one was deficient 12.8 pounds per ton. The greatest deficiency is equivalent to about $1.50 per ton, assuming the nitrogen present in the inorganic form and making no allowance for overrun in the other constituents which in this brand amounts to about $1.00 per ton.

Only four samples Avere deficient in available phos- phoric acid. Three of these deficiencies amount to less than fifty cents per ton and the maximum deficiency less than $1.00 per ton.

There were eighteen samples deficient in potash. Six- teen of these deficiencies amount to less than fifty cents per ton. One was less than $1.00 per ton. One deficiency Avas nearly $2.00 per ton although overages in nitrogen and available phosphoric acid make up one-half the deficiency.

Ill tlie tabulation of the analyses in the following pages deficiencies of one-fourth of one per cent or more of nitrogen and one-half of one per cent or more of available phosphoric acid and water soluble potash are shown in

Dec, 1933] fertilizer inspection, 1933 5

bold-faced type. A deficiency of more than one-half of one per cent in the total plant nutrients guaranteed is also shown in bold-faced type. The names of the manu- facturers are arranged alphabetically, and under the manufacturer the different brands are arranged alpha- betically or numerically by formula.

N. II. A(iR. EXPERIMENT STATION [Bulletin 278

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9

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Bulletin 279

March, 1934

NEW HAMPSHIRE AGRICULTURAL EXPERIMENT STATION

STUDIES IN ECONOMICS OF APPLE ORCHARDING

Part II. A Study of Farm Organization on 12 Fruit Farms

By H. C. WOODWORTH and G. F. POTTER

UNIVERSITY OF NEW HAMPSHIRE DURHAM, N. H.

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