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Requirements for Achieving and Maintaining Uniformly Low Salt in a Saline Soil
Author(s) -
Robinson C. W.,
Kemper W. D.,
Golus H. M.,
Schumaker G.,
Pugh W. J.
Publication year - 1965
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/sssaj1965.03615995002900050034x
Subject(s) - infiltration (hvac) , homogeneous , salinity , irrigation , soil salinity , environmental science , saline water , dns root zone , soil science , hydrology (agriculture) , saline , leaching model , soil water , agronomy , mathematics , geology , materials science , geotechnical engineering , biology , oceanography , combinatorics , endocrinology , composite material
The amount of irrigation necessary to limit salinity in the plant root zone to concentrations equal to or less than 8 mmho/cm was computed from the consumptive use, rainfall, and salinity of the irrigation water, assuming completely homogeneous plots. Heterogeneity of infiltration rates within plots required that the amount of water applied be 10 to 20% higher than in the theoretical homogeneous case in order to maintain adequate salt removal. Irrigation at 30% higher than the need for the homogeneous case resulted in reduced yields and reduced N content of wheatgrass in areas of high infiltration within the plots. Irrigation at 6% higher than necessary for the homogeneous case resulted in accumulation of salts in areas of low infiltration.