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Soil Pore Structural Stability and Irrigation Water Quality: III. Evaluation of Soil Stability and Crop Yield in Relation to Salinity and Sodicity
Author(s) -
Cass A.,
Sumner M. E.
Publication year - 1982
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/sssaj1982.03615995004600030013x
Subject(s) - environmental science , soil salinity , salinity , soil science , irrigation , drainage , soil water , evapotranspiration , leaching model , soil structure , hydrology (agriculture) , agronomy , geology , geotechnical engineering , ecology , oceanography , biology
A method is proposed for quantitative evaluation of the relationship between irrigation water quality and soil structural stability under a specified set of climatic conditions. Quantitative criteria for pore structural stability are provided by a family of threshold concentration curves determined empirically for each soil. After estimating the variation in composition and concentration of soil water as a function of rainfall, evapotranspiration, and soil drainage, intersection of the sodium stability curve with the irrigation water‐soil solution rectangle provides the necessary quantitative index. A similar approach for evaluating crop response to salinity is presented. The method provides quantitative evaluation of irrigation water quality in relation to soil structural stability and crop salinity tolerance.