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Response of Cotton and Changes in Chemical Properties of Soil from Continuous Use of Various Sources of Nitrogen Fertilizers
Author(s) -
Paden W. R.
Publication year - 1948
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1948.036159950012000c0066x
Subject(s) - citation , nitrogen , computer science , environmental science , library science , chemistry , organic chemistry
Plots YMO acre in size, contained in specially constructed concrete frames, were designed for this study. The surface soil was removed from the area to a uniform subsoil before construction of the frames was begun. The frames extended 12 inches in the subsoil and 8 inches above. After they .were constructed and had been coated with a tar preparation to reduce leaching of salts from the concrete, the original surface soil was then carefully mixed and replaced. The soil was a fairly typical Cecil sandy loam. The fertility condition of the soil was somewhat above average for soil of this type as the area had received an application of lime and had previously grown alfalfa. Seventy-eight plots were contained in this experiment and they were arranged in three series of 26 plots each. Lime was applied to one series at the rate of 1,720 pounds of calcium hydroxide per acre for comparison with another series which did not receive any lime. No additional.lime was applied since this initial application in 1928.