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A Comparison of Column-Displacement and Centrifuge Methods for Obtaining Soil Solutions¹

ABSTRACT

Four soils, ranging in texture from loamy sand to clay, were fertilized differently and equilibrated moist for several days. Soil solutions were then separated by column-displacement, by simple centrifugation, and by immiscible displacement with CCl₄ via centrifugation. The ionic compositions of soil solutions were unaffected by the method used to obtain the solutions.

¹ Contribution from the Dep. of Agronomy & Soils, Auburn University, Auburn, AL 36830.

² Professor of Soils, Research Assistant, Research Associate, Auburn Univ., and Soil Scientist, USDA; respectively.

Received for publication October 1, 1979. Accepted for publication March 11, 1980.