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Fig. 4. Estimated grain yield for different cropping systems based on probabilities of crop water stress index (CWSI) and grain yield–CWSI relationships. Probabilities, expressed by the relative frequency, of CWSI values are calculated based on 24 yr of estimated seasonal Evapotranspiration (ET) and potential evapotranspiration (PET) records. Regression functions in Fig. 2 and 3 were used to estimate grain yield related to probabilities of CWSI. Data points (
) are for minimum, 75% probability, 50% probability, 25% probability, and maximum CWSI values in 24 yr of records, respectively.
