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Factors Affecting Phosphorus Losses from Cultivated Organic Soils
Author(s) -
Cogger Craig,
Duxbury John M.
Publication year - 1984
Publication title -
journal of environmental quality
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.888
H-Index - 171
eISSN - 1537-2537
pISSN - 0047-2425
DOI - 10.2134/jeq1984.00472425001300010020x
Subject(s) - soil water , leaching (pedology) , organic matter , lessivage , fertilizer , environmental science , chemistry , environmental chemistry , agronomy , soil science , organic chemistry , biology
Leaching losses of P from organic soils can have a marked effect on water quality. Factors affecting leaching loss of P from cultivated organic soils in western New York State (Carlisle and Palms series) and ways to reduce these losses were investigated. The behavior of P in organic soils from eight sites with annual leaching losses ranging from < 1 to > 30 kg ha −1 y −1 was compared. Inorganic, organic, and total P; P extracted by soil test procedures; percent mineral matter; depth of organic horizons; leaching and adsorption of P; release of P during incubation; and total extractable Al and Fe were compared. A P balance was estimated using field and laboratory data, and cropping and fertilization history. Aluminum, iron, and adsorption equilibria were the best predictors of field leaching losses from these soils. While P loss from these soils is controlled by adsorption reactions, the best way to reduce the loss is through fertilizer management.