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Effect of Fertilizers on the Conductivity of Saturated Soil Extracts
Author(s) -
Chapin J. S.,
Fisher F. L.,
Caldwell A. G.
Publication year - 1964
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/sssaj1964.03615995002800010040x
Subject(s) - loam , diammonium phosphate , chemistry , urea , phosphoric acid , potassium , conductivity , ammonium sulfate , saturation (graph theory) , fertilizer , ammonium nitrate , potassium sulfate , phosphate , nitrate , ammonium , agronomy , soil water , soil science , chromatography , geology , biochemistry , mathematics , organic chemistry , combinatorics , biology
Abstract Varying concentrations of fertilizers were mixed with Yahola fine sandy loam, Norwood silt loam, and Miller clay. Conductivity of the saturation extract was determined using a Wheatstone bridge. There was a marked difference in the conductivity caused by the different fertilizer materials. The fertilizers used are arranged in order of increasing effect (based on weight per unit of soil) on conductivity of the saturation extract: urea, ordinary superphosphate, concentrated superphosphate, phosphoric acid, monoammonium phosphate, diammonium phosphate, potassium sulfate, ammonium nitrate, and potassium chloride. Urea was unique in that the conductivity of the saturated extract increased with time of incubation.