Essay On the Use of Nitrate of Soda for Manure, And the Best Mode of Its Employment
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The land is what is termed " a blue grass soil," derived from the lower Silurian limestone, rich in phosphoric acid. The subsoil is a light colored clay, so retentive as to make the soil deficient in nat- ural drainage. The land is worn, having been in culti- vation for many years, without manure. We infer from the report of Dr. Scovel that the land has not been underdrained, and if, as he states, " the soil is deficient in natural drainage," the nitrate of soda can- not be expected to produce ...its full effect. Neverthe- less the experiments show that nitrate of soda, even on this soil, can be used on tobacco with great profit. The tobacco plants were set in rows three feet apart, and twenty-two inches apart in the rows. The fertil- izers were sown broadcast just before the tobacco plants were set. Whether they were worked into the soil or allowed to lie on the surface is not stated. From the field notes taken July 1 and August 1, it would seem that the nitrate of soda had very little if any beneficial effect on the plants up to the first of August.
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