3.1 Sugarcane and Cassava
Sugarcane and Cassava is generally grown in northern, northeastern and central plain. In the northern cultivated area there is a minimum and a maximum average yield (see, Table 1). The planting time of sugarcane is either between July and September or between October and December [10]. For cassava the planting time is May through to July. This paper calculated crop water requirement of crops on optimal assumption.