This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1917 Excerpt: ...in 1893, were conducted upon permanent experiment plots of the Rhode Island Station. Air-slaked lime was applied in 1893 to two of the plots at the rate of 5,400 pounds per acre, and 1,000 pounds in 1894, and none since. Equal quantities of potash, phosphoric acid, and nitrogen have been appl1ed annually to each plot, ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1917 Excerpt: ...in 1893, were conducted upon permanent experiment plots of the Rhode Island Station. Air-slaked lime was applied in 1893 to two of the plots at the rate of 5,400 pounds per acre, and 1,000 pounds in 1894, and none since. Equal quantities of potash, phosphoric acid, and nitrogen have been appl1ed annually to each plot, and, since 1899, sulphate of magnesia. Two of the plots receive nitrogen as sulphate of ammonia, and two as nitrate of soda. The tendency of the two plots which receive sulphate of ammonia is 1 See their reports and bulletins: also Veitch, Bulletin 90, p. 183, Bureau Chemistry, U. S. Dept. Agr.; Bulletin No. 66, Maryland Exp. Sta. Fig. 60.--Bare spot in barley caused by acid soil. Woburn, England. to become acid, since removal of the nitrogen leaves sulphuric acid; while the latter two plots tend to become basic, since the residue left is soda. Equal numbers of plants were set out on each plot. A great number of different crops have been grown at various times. A few results are as follows: The acid soils (Nos. 23 and 27) give smaller yields with these crops than the limed soils. The nitrate of soda plot. which, as stated, has a tendency to become basic on account of the basic residue left when the nitrogen is taken up, gives better yields than the ammonium sulphate plot, which has a tendency to become acid. Effect of Lime on Crops and Acid Soils.1--The following gives the ascertained effect of lime on various crops as found by experiments such as described above: Benefited by Lime.--Alfalfa, Fig. 61.--Sorghum on acid soil, (A) limed and nitrate of soda, (B) unlimed and nitrate of soda, (C) limed and sulphate of ammonia, (D) unlimed and sulphate of ammonia. Rhode Island Station. asparagus, barley, beets, clover, celery, cauliflower, currants, ...
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