Modeling of soil water retention curve using soil solid phase parameters

  • Walczak R
  • Moreno F
  • Slawinski C
 et al. 
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Summary This paper presents the statistical-physical model (pedotransfer
function) relating soil water content at defined values of soil water
potential to selected parameters of soil solid phase, developed for
eight arable soils representative for south-west Spain. The model
contains two equations for which independent variables include the
content of soil granulometric fractions 2.0-0.2 mm and 0.2-0.02 mm,
and bulk density or total porosity. Similar correlation coefficients
between measured and predicted water contents were found for both
equations: 0.89 the second one. The model was validated for 46 Polish soils of a
wide range of textures, yielding also good correlations of measured
and predicted data (R values over 0.9 in both cases). That the model
elaborated on the base of soil samples from mediterranean climate
(Spain) was applicable for soil samples from temperate climate (Poland),
proves its general usefulness for soil moisture content estimation
from basic physical parameters of soil solid phase. The presented
model is simpler than the other commonly used ones described in the

Author-supplied keywords

  • Bulk density
  • Particle size distribution
  • Pedotransfer function
  • Porosity
  • Water retention

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  • R T Walczak

  • F Moreno

  • C Slawinski

  • E Fernandez

  • J L Arrue

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