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Model for Estimating Soil Water, Plant, and Atmospheric Interrelations: II. Field Test of Model
Author(s) -
Nimah M. N.,
Hanks R. J.
Publication year - 1973
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1973.03615995003700040019x
Subject(s) - evapotranspiration , water table , environmental science , hydrology (agriculture) , irrigation , water extraction , soil water , medicago sativa , water flow , soil science , water use , growing season , water content , extraction (chemistry) , agronomy , groundwater , geology , chemistry , ecology , geotechnical engineering , biology , chromatography
A mathematical model was developed to predict water content profiles, evapotranspiration, water flow from or to the water table, root extraction, and root water potential at the surface under transient conditions. The model was field tested in 1970 and 1971. With alfalfa ( Medicago sativa L.) as the crop, predicted and computed water content‐depth profiles show best agreement 48 hours after any water addition. The poorest agreement for all crops tested was right after irrigation. The computed cumulative upward water flow from the water table was 4.80 cm as compared to 0.0 cm measured for the whole 1971 season of 116 days.