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Effect of Phosphate on the Cation‐Exchange Capacity of Minerals and Soils
Author(s) -
Perkins Alfred T.
Publication year - 1958
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/sssaj1958.03615995002200060008x
Subject(s) - cation exchange capacity , phosphate , soil water , chemistry , clay minerals , bentonite , ion exchange , environmental chemistry , podzol , fertilizer , soil science , geology , mineralogy , ion , paleontology , organic chemistry
The cation‐exchange capacity of several soil minerals and fertilizer compounds has been determined. The exchange capacity of iron and aluminum phosphates was found to be approximately the same as or somewhat greater than that of Wyoming bentonite. Phosphate treatment of several horizons of 4 different soils was found to increase the cation‐exchange capacity of these soils but not in proportion to the amount of phosphate fixed, except in the case of the 6 horizons of the Summit soil. Eight soil clay minerals or minerals closely related to soil clays were decomposed by grinding and the effect of phosphate treatment on their exchange capacity was determined. In most cases a major increase in cation‐exchange capacity resulted from phosphate treatment, but in several cases a lesser numerical but significant decrease occurred. It is concluded that phosphate fertilization can noticeably effect an increase in the cation‐exchange capacity of soils.