Variation within Texture Classes of Soil Water Parameters

ABSTRACT THE Brooks and Corey effective saturation-capillary pressure equation was fitted to 1,085 soil moisture characteristics for 10 soil texture classes ranging from sand to clay. The fitted parameters, A-pore size index, if>fc-bubbling pressure, and -total porosity, within each texture class were transformed to a normal distribution. The distribution statistics are presented. Green and Ampt infiltration equation parameters, ipr wetting front capillary head and K-conductivity, were estimated from the Brooks and Corey equation parameters and a transformation to a normal distribu-tion was made. Statistics are presented for each soil tex-ture.