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Effects of Root and Subirrigation Depth on Evaporation and Percolation Losses
Author(s) -
Philip J. R.
Publication year - 1991
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/sssaj1991.03615995005500060003x
Subject(s) - percolation (cognitive psychology) , evaporation , sink (geography) , soil science , environmental science , soil loss , percolation theory , hydrology (agriculture) , geology , geotechnical engineering , conductivity , chemistry , geomorphology , erosion , thermodynamics , physics , geography , neuroscience , biology , cartography
Loss from surface evaporation and from percolation limit the efficiency of subirrigation. This study yields bounds on the relative magnitude of the two types of losses. Quasilinear results on evaporation from buried steady sources are used to investigate the effects of source depth and root sink depth on soil evaporation and deep‐percolation losses from subirrigated crops. The study quantifies the concept that the deeper the source relative to the roots the smaller the soil evaporation loss and the larger the deep‐percolation loss.