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 McLean, E. O. Articles by Lakshmanan, C. Search for Related Content PubMed Articles by McLean, E. O. Articles by Lakshmanan, C. Agricola Articles by McLean, E. O. Articles by Lakshmanan, C.

Aluminum in Soils: VII. Interrelationships of Organic Matter, Liming, and Extractable Aluminum with "Permanent Charge" (KCl) and pH-Dependent Cation-Exchange Capacity of Surface Soils¹

ABSTRACT

Seven Ohio surface soils which had been incubated with little or no lime and with sufficient quantities to nearly neutralize them were analyzed for "permanent charge" or KCl- and pH-dependent cation-exchange capacity (CEC). The low- and high-lime soils were also analyzed for both of these components of CEC after organic matter was destroyed with hydrogen peroxide. CEC was also determined by extraction with 1N NH₄OAc-pH 7.

Changes in both the KCl-CEC and pH-dependent CEC caused by liming and by destruction of organic matter appeared to be the result of activation or inactivation of exchange sites of the organic matter initially occupied by Al. Only in the case of one soil (Venango, A2 horizon) did hydroxy-Al appear to be equal to organic matter in effect on pH-dependent CEC.

¹ Published with the permission of the Director of the Ohio Agr. Exp. Sta. as Journal Article no. 70-64. Financial assistance from the National Science Foundation and the U.S. Atomic Energy Commission is gratefully acknowledged.

² Professor, Research Assistant, and Research Associate, respectively, The Ohio State University.

Received for publication October 23, 1964. Accepted for publication March 16, 1965.