ip#h! ippliMife ^;:i!:|::!:;;i;:;!;;;;|v:,:':' • 2.SU OK -ft * - 41 1$ Ahftityfct'~M24 GK% -lMi5 EXPERIMENT STATION LIBRARY 3 L4L.DD DOblfl M73D I J RICUL STATION N. H. S2l Bulletin 2&&- January, 1929 THE UNIVERSITY OF NEW HAMPSHIRE AGRICULTURAL EXPERIMENT STATION DEPARTMENT OF AGRICULTURAL CHEMISTRY Inspection of Commercial Fertilizers for 1928 MADE FOR THE STATE DEPARTMENT OF AGRICULTURE T. G. Phillips, T. O. Smith and F. S. Schlenker THE UNIVERSITY OF NEW HAMPSHIRE DURHAM, 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 Honorable Andrew L. Felker, Commissioner of Agriculture. The state inspector, Mr. Eugene D. Sanborn, collected samples of 128 brands of fertilizer materials which were offered for sale by dealers or had been delivered to consumers between March and June, 1928. The general character of the fertilizer materials collected is shown by the following classification : Complete fertilizer 96 Nitrogen and phosphoric acid 1 Nitrate of soda 7 Ground bone 6 Sheep manure 6 Superphosphate (acid phosphate) 3 Sulphate of ammonia 2 Tankage 2 Sheep and goat manure 2 Goat manure 1 Basic slag 1 Muriate of potash 1 128 2-37 2 N. H. AGR. EXPERIMENT STATION [ Bulletin -2§& THE FERTILIZER LAW. The New Hampshire fertilizer law applies to all fertilizer materials offered for sale, whether mixed materials in the form of complete fertilizers or unmixed materials as super- phosphate (acid phosphate), nitrate of soda, ground bone, tankage, etc. Under the provisions of the law every manu- facturer or dealer who shall sell or offer for sale any fer- tilizer material shall furnish with each lot or package a clearly printed statement certifying the brand name under which it is sold, the name and address of the manufacturer, the number of net pounds the package contains and a chemical analysis stating the minimum percentages of nitrogen, of total phosphoric acid, of available phosphoric acid and of water soluble potash. No person shall sell or offer for sale any pulverized leather, hair or wool waste, peat, garbage tankage, or any inert material whatsoever, without an explicit printed statement of the fact conspicu- ously fixed to every package of such material. The state official in charge of the administration of the fertilizer law is the Commissioner of Agriculture. In Table I are given the grades of complete fertilizers collected, the number of brands found in each grade, the average analysis of each grade and the average retail price per ton. Jan., 1929] fertilizer inspection, 1928 TABLE I •*» ■•* .' 4a 4» c s - H - a a> a, _ tn a o^= OA o£ M u ft m2 M^ w 0 a *" IH 0) • 2 a> m ° ft.2 a Si O m o •° ., ft eS H-C «u M o •- © * .2 « ►>■£ © ~ 53 C £ 6t£ M,3 S 6C~ w M e> 2 Mg s — - «i s a ea a a o OS'S™ eS.H 5 .a MX* t. "tr .. t- t»J3 M gO m b u - a o> ^~ ^ S> a a of p. ? ft o >• ► > > > fa fc -^ < <* ^ < 1 — 9 — 4 3 1.06 0.115 8.98 3.99 41.00 1 — 10 — 3 1 0.84 10.91 10.35 3.00 2 — 8 — 2 3 1.83 8.67 8.11 2.25 36.67 2 — 8 — 10 3 1.85 8.72 7.91 10.49 49.67 2 — 9 — 3 6 1.70 9.42 8.93 3.10 41.83 2 — 10 — 2 4 1.71 10.53 9.98 2.20 36.25 2 — 10 — 4 1 1.76 11.09 10.45 4.36 2—12 — 4 3 1.97 12.46 11.82 4.39 41.67 3 — 8 — 4 11 2.55 8.81 7.96 4.09 40.18 3 — 8 — 6 1 3.09 10.10 8.20 6.56 3 — 8 — 10 1 2.72 9.18 8.14 10.00 .... 3 — 10 — 4 1 2.51 10.56 9.48 4.05 48.66 3 — 10 — 6 2 2.64 11.10 10.27 6.16 42.50 3 — 12 — 3 1 2.70 12.60 12.00 3.04 33.40 4 — 6 — 10 9 3.32 6.80 6.13 10.13 47.22 4—8 — 4 8 3.34 8.79 8.01 4.17 44.29 4 — 8 — 6 1 3.29 8.58 8.00 6.36 50.00 4 — 8 — 7 3 3.35 8.86 8.41 7.06 47.33 4 — 8 — 10 2 3.31 8.55 8.00 10.08 52.50 4 — 10 — 4 1 3.35 11.16 10.52 4.08 50.00 4 — 12 — 4 1 3.39 12.58 12.33 4.59 120.00 4 — 16 — 4 1 3.44 17.12 16.04 4.28 42.60 5 — 8 — 7 12 4.14 8.81 7.95 7.12 48.34 5 — 10 — 5 3 4.09 10.98 10.15 5.28 44.30 6 — 6 — 4 1 4.88 6.97 6.45 3.77 57.00 6 — 8 — 5 1 4.93 10.66 10.16 4.73 7 — 6 — 5 6 5.48 6.93 6.22 5.02 52.66 8 — 6 — 6 2 6.32 6.90 6.39 5.65 49.30 8 — 16 — 8 1 6.57 17.93 17.35 8.11 57.00 10 — 3 — 8 1 8.52 4.40 3.86 7.62 80.00 10 — 3.5 — 8 1 8.26 8.00 4.42 8.33 10 — 16 — 14 1 7.83 17.63 17.07 13.36 67.66 CONFORMITY TO GUARANTEE Fifty-five of the 128 brands analyzed were found to contain less than the guarantee of one or more of the three constituents. The total number of guarantees on the 128 brands was 444, the total number of deficiencies 87, the per cent deficient 19.6. This shows some improvement over last year when the corresponding per cent was 24.5. Many of these deficiencies were comparatively negligible, however, the small deficiency in one constituent being offset in value by overrun in other constituents. A detailed summary of the deficiencies in the 55 brands which failed to meet their guarantees follows : 4 n. h. agr. experiment station [ Bulletin "238 Total Brands Deficiencies Nitrogen, total phosphoric acid, available phosphoric acid and potash 1 4 Nitrogen, total phosphoric acid and potash 0 0 Nitrogen, available phosphoric acid and potash- 0 0 Nitrogen, total phosphoric acid and avail- able phosphoric acid Nitrogen and total phosphoric acid Nitrogen and available phosphoric acid.... Nitrogen and potash Nitrogen Total phosphoric acid, available phos- phoric acid and potash Total phosphoric acid and potash Available phosphoric acid and potash Potash Total phosphoric acid and available phos- phoric acid Total phosphoric acid Available phosphoric acid 55 87 NITROGEN DEFICIENCIES Seven brands of nitrate of soda and two brands of sul- phate of ammonia were analyzed. All met their guarantee. One hundred fourteen brands were guaranteed to contain nitrogen in amounts varying from 0.82 per cent to 8.22 per cent. Twenty-two of these failed to meet the guaran- tee. Six were below the guarantee by less than one-tenth per cent. Seven were below by more than one-tenth per cent but less than two-tenths per cent. Five were below by more than two-tenths per cent but less than three-tenths per cent. Two were below by more than three-tenths per cent but less than four-tenths per cent. One was below by more than four-tenths per cent but less than one-half per cent. One failed to meet the guarantee by 0.54 per cent. 2 6 2 4 1 2 8 16 8 8 4 12 0 0 0 0 5 5 6 12 14 14 4 4 Jan., 1929] fertilizer inspection, 1928 5 PHOSPHORIC ACID DEFICIENCIES Three brands of sixteen per cent acid phosphate were analyzed and found to meet the guarantee. One hundred fifteen other brands were guaranteed to contain phos- phoric acid. Twenty-nine of these were deficient in total phosphoric acid and eighteen in available phosphoric acid. Eleven failed to meet the guarantee of total phosphoric acid by less than one-fourth per cent. Thirteen were more than one-fourth per cent below but less than one- half per cent. Four were more than one-half per cent below but less than three-fourths per cent. One was more than three-fourths per cent below but less than one per cent. Seven failed to meet the guarantee in available phosphoric acid by less than one-fourth per cent. Three were more than one-fourth per cent below but less than one-half per cent. Six were more than one-half per cent below but less than three-fourths per cent. Two were more than one per cent below. POTASH DEFICIENCIES One sample of muriate of potash was analyzed and found to meet the guarantee. One hundred six other brands were guaranteed to contain potash in amounts varying from 2.00 per cent to 14.00 per cent. Eighteen of these failed to meet the guarantee. Ten were deficient by less than one-fourth per cent. Five were deficient by more than one-fourth per cent but less than one-half per cent. Two were deficient by more than one-half per cent but less than three-fourths per cent and one was deficient by more than three-fourths per cent but less than one per cent. In the tabulation of the analyses in the following pages deficiencies of two-tenths of one per cent or more are shown in Italics. The names of the manufacturers are arranged alphabetically, and under the manufacturer the different brands are arranged alphabetically or numericallv by formula. N. H. 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