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THE INFLUENCE OF TEXTURE ON THE MOISTURE CHARACTERISTICS OF SOIL
Author(s) -
SALTER P. J.,
WILLIAMS J. B.
Publication year - 1969
Publication title -
journal of soil science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.244
H-Index - 111
eISSN - 1365-2389
pISSN - 0022-4588
DOI - 10.1111/j.1365-2389.1969.tb01561.x
Subject(s) - soil water , silt , moisture , soil texture , water content , soil science , texture (cosmology) , environmental science , limit (mathematics) , mathematics , regression analysis , organic matter , hydrology (agriculture) , mineralogy , statistics , geology , geotechnical engineering , geography , chemistry , meteorology , geomorphology , mathematical analysis , organic chemistry , artificial intelligence , computer science , image (mathematics)
Summary A quantitative assessment was made of the effect of the proportion of sand, silt, clay, and organic matter in twenty‐six soils on the moisture contents at the upper and lower limits of available‐water of the soils. Regression equations were obtained which enabled the moisture contents to be estimated on a weight or volume basis from mechanical analysis data using either International or American size grades. The accuracy of estimating the upper limit of available‐water from the various equations ranged from ±9 to 22 per cent: for the lower limit from ±8 to 16 per cent of the measured values. Mean values of the moisture contents at the upper and lower limits of available‐water for each textural class were calculated from the average particle‐size composition for each class and from the regressions obtained.