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Effect of Decomposition of Added Oat Straw and Alfalfa Meal on Solubility of Soil Copper in Ammonium Acetate
Author(s) -
Hurwitz Charles
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/sssaj1948.036159950012000c0045x
Subject(s) - straw , solubility , copper , chemistry , decomposition , agronomy , ammonium acetate , ammonium , meal , food science , inorganic chemistry , organic chemistry , biology , high performance liquid chromatography
I N another paper (2), it was shown that when oat straw and alfalfa meal were added to Merrimac sandy loam, the ammonium acetate soluble copper increased over that in unamended soil as a result of the presence of unknown soluble components in the crop residues. Thus, when 4.35 grams of oat straw and 0.6 gram of alfalfa meal were added to 374 grams of Merrimac sandy loam (20.4% moisture), leachable copper was found to be 22.0 y Cu per 10.0 grams dry weight soil. When no organic matter was added, the same soil yielded 8.4 y Cu when leached with neutral N ammonium acetate. On a lo.o-gram dry weight basis, the total copper added in the oat straw and alfalfa meal was only 1.72 y. The present paper reports the effect of decomposition of the plant residues on the solubility of soil copper.