HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Perkins, A. T. Search for Related Content PubMed Articles by Perkins, A. T. Agricola Articles by Perkins, A. T.

Effect of Phosphate on the Cation-Exchange Capacity of Minerals and Soils¹

ABSTRACT

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.

¹ Contribution No. 599, Department of Chemistry, Kansas Agr. Exp. Sta., Manhattan. Presented before Div. II, Soil Science Society of America, Nov. 22, 1957, at Atlanta, Ga. Received April 24, 1957. Approved July 18, 1958. This paper was submitted for publication on April 16, 1957, but through a misunderstanding was kept by the vice chairman of Div. II, SSSA, until April 1958 before being submitted to the Editor-in-Chief.

² Professor of Chemistry and Soil Chemist.

Received for publication April 24, 1957. Accepted for publication July 18, 1958.