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 Ashford, E. M. Articles by Drew, J. V. Search for Related Content PubMed Articles by Ashford, E. M. Articles by Drew, J. V. Agricola Articles by Ashford, E. M. Articles by Drew, J. V.

Influence of Sand on the Amount of Water-Dispersible Clay in Soil¹

ABSTRACT

Water-dispersible clay in soils from a number of geographic locations increased in relation to clay measured by a standard procedure as the proportion of sand in the soils increased. Additions of sand to soils containing relatively small amounts of water-dispersible clay relative to "regular" clay markedly increased the yield of water-dispersible clay; medium sand and coarse sand were the most effective. Conversely, the removal of sand from soil containing large amounts of sand reduced the yield of water-dispersible clay. The abrasive action of sand during agitation associated with water dispersion evidently breaks down aggregates containing clay.

¹ Contribution from the Soil Survey Lab., SCS, USDA, Lincoln, Nebr.; and the Dep. of Agron., Univ. of Nebraska, Lincoln 68508. Published as paper no. 3282, Journal Series, Nebr. Agr. Exp. Sta. Research reported was conducted under Project no. 12-11.

² Soil Scientist, SCS, USDA, Colorado Springs, Colo.; Soil Scientist, Soil Survey Lab., SCS, USDA, Lincoln, Nebr.; and Professor of Agron., Univ. of Nebraska, respectively.

Received for publication January 4, 1972. Accepted for publication May 3, 1972.