Spatial and temporal variability of soil water matric potential in a dark red latosol

Authors

  • F.B.P. Pacheco USP; ESALQ; Departamento de Física e Meteorologia
  • K. Reichardt USP; ESALQ; Departamento de Física e Meteorologia
  • R.L. Tuon USP; ESALQ; Departamento de Física e Meteorologia
  • O.O.S. Bacchi USP; Centro de Energia Nuclear na Agricultura
  • M.M. Villagra University of Gent

DOI:

https://doi.org/10.1590/S0103-90161994000200020

Keywords:

spatial variability, temporal variability, autocorrelation, semivariogram, matric potential, hydraulic gradient

Abstract

Variabilities of soil water matric potential and of hydraulic gradients are analysed using geostatistical concepts and normal distribution statistics. Twenty five data pairs, collected along a 125 m transect of a dark red latosol (terra roxa estruturada) are analysed using autocorrelograms and semivariograms. No spatial dependence was found for both variables. The variability of soil water matric potential, measured by tensiometry, is less than the variability of hydraulic gradients. This last variable presented a high variability, to the point of compromising its use in soil water flux estimatives.

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Published

1994-08-01

Issue

Vol. 51 No. 2 (1994)

Section

Earth Science

License

All content of the journal, except where identified, is licensed under a Creative Common attribution-type BY-NC.

How to Cite

Spatial and temporal variability of soil water matric potential in a dark red latosol . (1994). Scientia Agricola, 51(2), 327-334. https://doi.org/10.1590/S0103-90161994000200020