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The Influence of Organic Matter Additions on Rock Phosphate Availability to Crops
Author(s) -
Seatz Lloyd F.,
Sterges Athan J.,
Kramer James C.
Publication year - 1959
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/sssaj1959.03615995002300050023x
Subject(s) - organic matter , phosphorite , phosphate , environmental science , soil organic matter , agronomy , greenhouse , soil water , chemistry , environmental chemistry , soil science , biology , organic chemistry
A greenhouse experiment was conducted to evaluate the effects of adding organic matter to the soil on the availability of rock phosphate from two sources. The treated soils were cropped successively to Sudangrass, ryegrass, and two crops of red clover. Treatments receiving additions of organic matter yielded higher in most cases than the corresponding treatment without added organic matter. Increased yields were attributed to the additional P in the organic matter rather than to the beneficial effect of the organic matter on the availability of rock phosphate. Treatments receiving Florida rock phosphate yielded more than corresponding treatments receiving Tennessee rock phosphate.