Estimating soil water retention characteristics from particle size distribution, organic matter percent, and bulk density

S. C. Gupta, W. E. Larson

Research output: Contribution to journalArticlepeer-review

541 Scopus citations

Abstract

Regression models are presented for estimating soil‐water‐retention curves from particle‐size distribution, percentage of organic matter, and bulk density. Models were developed from the measured soil‐water‐retention curves of artificially packed cores (7.6×7.6 cm) of 43 soil materials. These soil materials included 13 agricultural soils. Curves predicted with these models approximated reasonably well the measured water retention of 61 Missouri soils. Because conventional methods of obtaining retention curves are expensive and time consuming, these equations will be valuable for modeling salt and water flow in soils and for estimating available water capacities. This paper is not subject to U.S. copyright. Published in 1979 by the American Geophysical Union.

Original languageEnglish (US)
Pages (from-to)1633-1635
Number of pages3
JournalWater Resources Research
Volume15
Issue number6
DOIs
StatePublished - Dec 1979

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