PLANTS AND MANURE .
At the annual conference of the Western New York Horticultural Society, held lately, Professor Dann remarked that the only substances ordinarily required to supply plant food are nitrogen potash, and phosphoric acid. A ton of apples draw from the soil not more than Hlbs of potash, two-thirds of a pound of phosphoric acid, and lib of nitrogen. A ton of beans would require 241 bs, 231bs, and Bibs, of these substances respectively ; a ton of hay, 341bs, Blbs, end 261 bs ; and a ton of potatoes, lllbs, 41bs, and Gibs. A comparison of these figures will show the relatively small amount of manure required by a crop of apples, and the large amount necessary when a surface crop is taken off. The food for a ton of apples is found in 2,poolbs. of fresh, clear cow manure, in about 2501b. of ordinary barn-yard manure, or in 251b. of superphosphate and lOlbs. of wood-ashes. What would be required to maintain the growth can be found in like manure from tables of analysis. By such calculations each cultivator can determine for himself which fertilisers are best tor his own use.
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Bibliographic details
Patea Mail, 19 July 1881, Page 4
Word Count
191PLANTS AND MANURE. Patea Mail, 19 July 1881, Page 4
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