This chapter has focused on some of techniques that can be used to predict agricultural drought. Whereas statistical regression, time series, and pattern recognition techniques were directly based on the crop yield variation to define drought, the probabilistic technique was centered on soil moisture surplus or deficit concept. It must be noted, however, that an intricate relationship exists between soil moisture deficit and crop yield or agricultural drought. Therefore, the probabilistic method described in this chapter can be indirectly linked to crop yield to predict agricultural drought.

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