Assessment of drainable porosity of a holm soil from soil-water tension

Authors

  • J.E. Queiroz UFPB; Depto. de Eng. Florestal
  • D.E. Cruciani UFPB; ESALQ; Depto. de Engenharia Rural
  • P.L. Libardi UFPB; ESALQ; Depto. de Física e Meteorologia

DOI:

https://doi.org/10.1590/S0103-90161995000300011

Keywords:

Drainable porostity, Retention curve, Empirical parameters

Abstract

An alternative way to assess the drainable porosity as a function of soil-water tension, from the soil-water retention curve (Van Genuchten's model), is presented for data of a clayey holm gley soil of the county of Piracicaba, SP, Brazil. Soil-water retention curves were determined using undisturbed soil samples. The analysis of the results has shown that the data variability was mainly due to random causes. Statistical indexes used to verify the degree of fitting of the experimental data to the proposed model, have shown that the model can be used to estimate the drainable porosity from the empirical parameters of the Van Genuchten model.

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Published

1995-12-01

Issue

Section

Articles

How to Cite

Assessment of drainable porosity of a holm soil from soil-water tension . (1995). Scientia Agricola, 52(3), 469-475. https://doi.org/10.1590/S0103-90161995000300011