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Release of Potassium from Nonexchangeable Forms in Relation to Soil Reaction
Author(s) -
Pratt P. F.,
Simon R. H.,
Volk G. W.
Publication year - 1956
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/sssaj1956.03615995002000020013x
Subject(s) - chemistry , soil water , potassium , lime , environmental chemistry , nuclear chemistry , inorganic chemistry , soil science , geology , organic chemistry , paleontology
Alternate incubations at various pH values and extractions with 0.5 N HCl for a Crosby soil indicated an increase in K release from nonexchangeable forms with increase in pH. Incubations of samples of the same soil with various cations in the exchange complex indicated higher K release from nonexchangeable forms with Ca rather than H as the exchangeable cation. Samples of six soils were extracted with AlCl 3 or with HOAc and then incubated in the moist after removal of excess salts and the addition of various quantities of lime. There was about 50% less K release with the AlCl 3 treated soils than with the HOAc treated soils. With the AlCl 3 soils there was no change in K release with increase in pH. In the HOAc treated soils there was a tendency for K release to increase with increase in pH.