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ISOTOPICALLY EXCHANGEABLE PHOSPHORUS IN SOILS
Author(s) -
TALIBUDEEN O.
Publication year - 1957
Publication title -
journal of soil science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.244
H-Index - 111
eISSN - 1365-2389
pISSN - 0022-4588
DOI - 10.1111/j.1365-2389.1957.tb01870.x
Subject(s) - phosphate , phosphorus , soil water , chemistry , environmental chemistry , inorganic chemistry , environmental science , soil science , organic chemistry
Summary Methods used to determine isotopically exchangeabIe phosphorus in soils are described and briefly analysed. The influence of soil: solution ratio, orthophosphate ions added with radio‐phosphorus, the equilibrium pH, and the removal of increasing amounts of phosphate from the soil are investigated. A scheme is suggested for the subdivision of the total soil phosphate into four fractions on the basis of their abilities to exchange PO 4 ions with the phosphate in the soil solution. The relation between the labile pool of soil phosphate and this scheme is discussed.