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A model for optimal irrigation scheduling with saline water
Author(s) -
Yaron D.,
Bresler E.,
Bielorai H.,
Harpinist B.
Publication year - 1980
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/wr016i002p00257
Subject(s) - soil salinity , irrigation , salinity , environmental science , irrigation scheduling , maximization , hydrology (agriculture) , water content , soil salinity control , leaching model , soil water , soil science , agricultural engineering , mathematics , agronomy , mathematical optimization , geology , engineering , geotechnical engineering , oceanography , biology
The paper presents a dynamic programing model for optimal scheduling of irrigation with water of varying salinity levels and soil salinity parameters explicitly considered. The system underlying the model is characterized by two discrete state variables, soil moisture and the salinity level of the soil solution, which are updated on a day‐by‐day basis. Transformation functions from one state to another in response to irrigation decisions and a crop response function to soil moisture and salinity are the other elements of the model, with the objective being maximization of income derived from the irrigated crop. An application to the irrigation of sorghum in the southern semiarid area of Israel is presented and evaluated.