ABSTRACT
Economically, optimum irrigation practice under limited supplies involves reducing water use from maximizing level of yield at which marginal cost equals the value of the marginal product [1]. This requires an appropriate schedule of water application satisfying the question of how much to apply and when to apply. Therefore, this study aims at: (a) Maximum water use efficiency (WUE), (b) Maximum yields of the crop, and (c) Maximum net return to the farmer.
