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Effects of Rate of Application and Time on Phosphorus Sorption by Soils
Author(s) -
Ibrahim H. S.,
Pratt P. F.
Publication year - 1982
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/sssaj1982.03615995004600050008x
Subject(s) - incubation , soil water , sorption , phosphorus , incubation period , chemistry , zoology , environmental chemistry , soil science , environmental science , biology , adsorption , biochemistry , organic chemistry
Several soils from southern California were treated with different rates of phosphorus (P) and then incubated in 0.01 M CaCl 2 to measure the effect of incubation time up to 84 d at 25°C. There were only small effects of incubation times beyond 3 d for low rates of P applications. At higher rates of application those soils that were deficient in P as indicated by the NaHCO 3 test (< 10 µg P extracted/g) gave increased P sorption with increase in incubation time beyond 3 d. Those soils well supplied with available P reached equilibrium in 3 d. In those soils deficient in P, equilibrium was attained by the 42nd d of incubation.