Evaluation of radiant canopy temperature and soil water measurement for quantifying the contribution of shallow watertables to crop evaporation [use in irrigation scheduling; soybeans]

A water balance model based on neutron probe measurements of soil water content and estimates of crop evaporation from radiant canopy temperature measurements was used to estimate the contribution of shallow water tables to crop evaporation, and tested against measurements of mass change, evaporatio...

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Published inAustralian journal of soil research Vol. 28; no. 6
Main Authors Mateos, L, Meyer, W.S, Smith, R.C.G, Sides, R. (Commonwealth Scientific and Industrial Research Organisation, Griffith (Australia). Div. of Water Resources)
Format Journal Article
LanguageEnglish
Published 1990
Subjects
AGUAS SUBTERRANEAS
BALANCE HIDRICO
BILAN HYDRIQUE
CALENDARIO DE LOS RIEGOS
CALENDRIER DES IRRIGATIONS
CONTENIDO DE AGUA EN EL SUELO
EAU SOUTERRAINE
EVAPOTRANSPIRACION
EVAPOTRANSPIRATION
GLYCINE MAX
TENEUR EN EAU DU SOL
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Summary:A water balance model based on neutron probe measurements of soil water content and estimates of crop evaporation from radiant canopy temperature measurements was used to estimate the contribution of shallow water tables to crop evaporation, and tested against measurements of mass change, evaporation and capillary rise in weighing lysimeters. An error of 20 percent was estimated when periods of 20 and 80 days were considered in loam and clay loam soils respectively.
Bibliography:P33
9202018
F01
P10
ISSN:0004-9573
1446-568X
DOI:10.1071/SR9901013