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NEW MEXICO CLIMATE CENTER |
Et = evapotranspiration or water used by crop.
y= 134.87 +14.25Et where y is kg/ha and Et is cm. The coefficient of determination is 0.66
The reference for this work is Sammis T. W. 1981. Yield of Alfalfa and Cotton as Influenced by Irrigation. Agronomy Journal 73:323-329
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