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Toward the structure of a production function for wheat yields with dated inputs of irrigation water
Author(s) -
Minhas B. S.,
Parikh K. S.,
Srinivasan T. N.
Publication year - 1974
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/wr010i003p00383
Subject(s) - irrigation , production (economics) , agricultural engineering , environmental science , function (biology) , water use , water content , moisture , hydrology (agriculture) , mathematics , agronomy , geography , meteorology , geology , engineering , economics , geotechnical engineering , evolutionary biology , biology , macroeconomics
The interdependence between the rate of water used by plants and the available stocks of moisture in the soil, the temporal interdependence between water use at different time points, and the consequences of these interdependencies for the relationship between time profiles as well as the quantities of water used by crop plants and yields have not generally been analyzed in a unified framework. We present one such unified framework for the analysis of optimal use of irrigation water. We have estimated from experimental data the mathematical form of a water use function and have used this function to compute the time profiles of actual water use for two crops: wheat in Delhi and alfalfa in Ohio. The estimated time profiles of consumptive use have been used to determine the relationship between wheat yields and dated inputs of water in Delhi.