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Post‐Irrigation Movement of Soil Water: 2. Simultaneous Redistribution and Evaporation
Author(s) -
Gardner W. R.,
Hillel D.,
Benyamini Y.
Publication year - 1970
Publication title -
water resources research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.863
H-Index - 217
eISSN - 1944-7973
pISSN - 0043-1397
DOI - 10.1029/wr006i004p01148
Subject(s) - redistribution (election) , irrigation , evaporation , environmental science , soil science , potential evaporation , environmental engineering , thermodynamics , agronomy , physics , politics , political science , law , biology
Water content measurements by γ‐ray attenuation were made on soil columns during simultaneous redistribution and evaporation following irrigation. Redistribution is shown to reduce evaporation, in some cases appreciably. For a deep irrigation the redistribution proceeds at a rate that is relatively independent of the evaporation process, as has been predicted from numerical solutions of the flow equation. Expressions are derived for obtaining an estimate of amount of reduction in evaporation due to redistribution when the redistribution rate is known.