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Phosphorus Availability in Reddish Brown Lateritic Soils. I. Laboratory Studies 1
Author(s) -
Alban L. A.,
Vacharotayan S.,
Jackson T. L.
Publication year - 1964
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1964.00021962005600060010x
Subject(s) - phosphorus , soil water , chemistry , phosphate , calcium , agronomy , phosphorite , zoology , environmental chemistry , biology , environmental science , soil science , biochemistry , organic chemistry
Synopsis NH 4 F extracted Al‐phosphates plus monoor di‐calcium phosphate, NaOH extracted Fe‐phosphates, and H 2 SO 4 extracted calcium phosphates remaining in the sample. Adding mono‐calcium phosphorus to 2 soils increased the NH 4 F‐ and the NaOH‐extractable P but had no effect on the H 2 SO 4 ‐extractable P. NH 4 F‐ and H 2 SO 4 ‐extractable P in soil correlated best with P content of oats and clover. Uptake of P by oats and clover during a cropping period was significantly correlated with loss of NH 4 F‐extractable P from the soil.