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 Watson, K. K. Articles by Jackson, R. D. Search for Related Content PubMed Articles by Watson, K. K. Articles by Jackson, R. D. Agricola Articles by Watson, K. K. Articles by Jackson, R. D.

Soil Water Hysteresis in a Field Soil¹

ABSTRACT

The requirements for the measurement in the field of the hysteresis characteristics of the soil water pressure (h)-water content () relationship are discussed and details given of the method whereby an undisturbed hexagonal monolith of soil of area 1.5 m² was isolated from the surrounding soil. The instrumentation used in measuring the soil water movement in this monolith, with particular reference to h and measurements at points in the soil profile, is described. The shapes of typical -time and h-time curves are then discussed in relation to possible hysteresis, and the actual h() relationship for soil at the 8- to 9-cm depth determined.

¹ Contribution from the Agricultural Research Service, USDA.

² Research Civil Engineer, Soil Scientist (Physics), and Research Physicist, respectively, US Water Conserv. Lab., Phoenix, Arizona 85040. This research was done while the senior author was on leave from the Univ. of New South Wales, Kensington, N.S.W. 2033, Australia.

Received for publication July 19, 1974. Accepted for publication November 21, 1974.