Predicting the soil water retention curve from readily-a vail able data obtained during soil surveys
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Research Institute for Soil Science and Agrochemistry, Blvd. Marasti, 61, 71331 Bucharest, Romania
Soil Survey and Land Research Centre, Silsoe Campus, Silsoe, Bedford MK45 4DT, UK
Int. Agrophys. 1996, 10(3): 185-188
Averages and coefficients of variation of the parameters of the van Genuchten equation were estimated, in relation to a large dataset, for soil particle-size classes differentiated according to the proportions of sand, silt, and clay particles in the inorganic fraction. For each particle-size class, three subclasses (soft, medium, and hard) were differentiated according to the values of the soil bulk density.
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