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 Ferguson, H. Articles by Gardner, W. H. Search for Related Content PubMed Articles by Ferguson, H. Articles by Gardner, W. H. Agricola Articles by Ferguson, H. Articles by Gardner, W. H.

Water Content Measurement in Soil Columns by Gamma Ray Absorption¹

ABSTRACT

A method of using gamma-ray absorption to measure the moisture content of a small volume of soil is described. The method appears promising in the study of unsaturated water flow, provided that the soil does not swell as water is applied, since measurements of both bulk density and water content can be obtained without disturbing the system. Water contents in a volume of soil about 1 cm. wide were measured to an accuracy of about ±0.5% by volume.

¹ Contribution from the Department of Agronomy, Washington Agr. Exp. Sta., Pullman, Project No. 1234. Scientific Paper No. 2085. Part of a thesis submitted in partial fulfillment of the requirements for the Ph.D. degree at Washington State University.

² Formerly Graduate Assistant, Washington State University, now Assistant Professor, Montana State College; and Professor of Soils, Washington State University, respectively.

Received for publication February 14, 1961. Accepted for publication May 3, 1961.