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Sampling and TDR probe insertion in the determination of the volumetric soil water content Rev. Bras. Ciênc. Solo
Teixeira,W. G.; Schroth,G.; Marques,J. D.; Huwe,Bernd.
Volumetric soil water content (theta) can be evaluated in the field by direct or indirect methods. Among the direct, the gravimetric method is regarded as highly reliable and thus often preferred. Its main disadvantages are that sampling and laboratory procedures are labor intensive, and that the method is destructive, which makes resampling of a same point impossible. Recently, the time domain reflectometry (TDR) technique has become a widely used indirect, non-destructive method to evaluate theta. In this study, evaluations of the apparent dielectric number of soils (epsilon) and samplings for the gravimetrical determination of the volumetric soil water content (thetaGrav) were carried out at four sites of a Xanthic Ferralsol in Manaus - Brazil. With the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Amazon; Oxisols; Time domain reflectometry; Dieletric properties.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832003000400001
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