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 Allmaras, R. R. Articles by Black, C. A. Search for Related Content PubMed Articles by Allmaras, R. R. Articles by Black, C. A. Agricola Articles by Allmaras, R. R. Articles by Black, C. A.

Hydrolysis of Condensed Phosphates in Soils¹

Soil and Water Conservation Research Division, ARS, USDA, at Morris, Minnesota

C. A. Black, former Graduate Assistant, now Soil Scientist, Professor of Soils

Iowa State University

ABSTRACT

Hydrolytic degradation of the condensed phosphates of fertilizer-grade calcium metaphosphate (CMP) in soils involves several steps, including formation of a dense, viscous liquid from the vitreous portion of the CMP. Experiments indicate that the rate-controlling step in the early stages of transformation of condensed P to orthophosphate in soils treated with solid particles of CMP was the degradation of the viscous liquid and not the hydrolysis of the condensed P in the solution derived from the viscous liquid.

¹ Journal Paper no. J-4143 of the Iowa Agr. and Home Econ. Exp. Sta., Ames, Iowa. Project no. 1183. Contribution from the Department of Agronomy. This work was conducted in cooperation with the Division of Agricultural Relations, Tennessee Valley Authority.

Received for publication January 6, 1965. Accepted for publication March 26, 1965.