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 Miller, D. E. Search for Related Content PubMed Articles by Miller, D. E. Agricola Articles by Miller, D. E.

Available Water in Soil as Influenced by Extraction of Soil Water by Plants¹

Over a two-year period, a study was conducted to evaluate the influence of extraction of soil water by plants on the downward flow of water following irrigation and on the amount of water that may be considered as available to the plant. A conventional estimate of available water at an arbitrary time after irrigation may be increased by about 40% of the evapotranspiration that occurs between irrigation and sampling because of the influence of water extraction on downward flow. The data emphasize the lack of precision in the field capacity concept and that soil drainage following an irrigation does not usually become negligible within reasonable times after irrigation.

Key Words: field capacity • evapotranspiration • deep drainage

² Research Soil Scientist, USDA, Prosser, Washington.

Received for publication March 2, 1967.