Data/hora: 12/06/2024 14:55:34

Provedor de dados: | Scientia Agricola
País: | Brazil
Título: | Field determined variation of the unsaturated hydraulic conductivity functions using simplified analysis of internal drainage experiments
Autores: | Villagra,M. M.; Michiels,P.; Hartmann,R.; Bacchi,O.O.S.; Reichardt,K.
Data: | 1994-04-01
Ano: | 1994
Palavras-chave: | Soil variability; Hydraulic conductivity.
Resumo: | Experimentally determined values of unsaturated soil hydraulic conductivity are presented for an Alfisol of the county of Piracicaba, S.P., Brazil. Simultaneous measurements of soil water content and pressure head are made along a 125 m transect within an irrigated field during the internal drainage process. Calculations of the soil hydraulic conductivity were made using the instantaneous profile method (Watson, 1966) and the unit gradient method (LIBARDI et al., 1980). The spatial variability of the soil hydraulic conductivity manifested along the transect indicates the need to develop a field method to measure K(theta) within prescribed fiducial limits, taking into account quantitative evaluation of spatial and temporal variances associated with the mathematical model, instrument calibration and soil properties.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90161994000100018
Editor: | São Paulo - Escola Superior de Agricultura "Luiz de Queiroz"
Relação: | 10.1590/S0103-90161994000100018
Formato: | text/html
Fonte: | Scientia Agricola  v.51 n.1 1994
Fonte: | info:eu-repo/semantics/openAccess