Sulfate of ammonia, nitrate of soda, sulfate, nitrate, and muriate of potash are generally held to be entirely exhausted by the crops grown the season of their application. EQUIVALENT QUANTITIES OF FERTILIZING MATERIALS. (WHEELER and HARTWELL.) 39 lbs. nitrate of soda and 38 lbs. phosphate rock. 55 lbs. dried blood and 38 lbs. phosphate rock. 91 lbs. cotton-seed meal and 38 lbs. phosphate rock. 68 lbs. dried blood and 31 lbs. diss. phosphate rock. 80 lbs. tankage and 17 lbs. nitrate of soda. 36 lbs. fine ground bone and 44 lbs. nitrate of soda. 18 lbs. dried blood and 85 lbs. diss. phosphate rock. 33 lbs. tankage and 72 lbs. diss. phosphate rock. 27 lbs. dry ground fish and 76 lbs. diss. phosphate rock VALUATION OF MANURES AND FERTILIZERS. The valuation of fertilizing ingredients shown below (see p. 137) is the one agreed upon by a number of Eastern experiment and fertilizer control stations after a careful study of the retail prices of crude products of fertilizers during the six months prior to March 1, 1896. It expresses the commercial value of the fertilizers, and not their agricultural value, which will vary according to the requirements of the land and the character of the crops grown. Fertilizers are sold in States having fertilizer control, on the basis of a guarantee of a minimum content of potash, phosphoric acid, and nitrogen, singly or combined, and it is the office of the fertilizer control stations to watch that goods offered for sale in their respective states are up to the guarantee. Farmers living in states where fertilizer laws are enacted (Alabama, Arkansas, Connecticut, Delaware, Florida, Georgia, Illinois, Indiana, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Mississippi, Missouri, New Hampshire, New Jersey, New York, North Carolina, Ohio, Pennsylvania, Rhode Island, South Carolina, Tennessee, Vermont, Virginia, West Virginia, Wisconsin) should not buy fertilizers except on guarantee, and should examine the fertilizer bulletins published by their respective stations to ascertain that the goods put on the market are not below the guarantee, and that the valuation price is not below the selling price of the article. Where a reasonable suspicion of fraud exists, apply to the director of the experiment station for information concerning the goods offered for sale or the firm placing them on the market. TRADE VALUES OF FERTILIZING INGREDIENTS IN RAW MATERIALS AND CHEMICALS, 1899. Adopted by Eastern Experiment Stations for estimating the value of mixed commercial fertilizers. in dry and fine-ground fish, meat, blood, and in highgrade mixed fertilizers.. in cotton-seed meal, linseed meal, and castor pomace in fine-ground bone and tankage.. in coarse bone and tankage.... Phosphoric acid soluble in water ..... soluble in ammonium-citrate solution.... in dry fine-ground fish, bone, and tankage 14 12 14 ΙΟ 41 in coarse bone and tankage... in cotton-seed meal, linseed meal, castor pomace, and wood ashes.. insoluble (in ammonium-citrate solution), in mixed fertilizers.. 2 4 ... 2 Potash as high-grade sulfate, and in mixtures free from muriate. as muriate... 5 41 The manurial constituents contained in feeding stuffs are valued as follows: |