The pedotransfer function (PTF) of Weynants et al. (2009) allows the estimation of the hydraulic parameters of the closed-form expression of the van Genuchten model (van Genuchten, 1980) on the basis of easily measurable soil characteristics, such as soil texture, bulk density, and organic C content. For the development of the new PTF, Weynants et al. (2009) revisited the Vereecken database of Belgian soils. This database was originally used to develop widely used PTFs for the van Genuchten model for the moisture retention characteristics and the Gardner model for the hydraulic conductivity function (Vereecken et al., 1989...

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