From Table.1, it can be observed that daily crop water requirement is a function of crop age and varied from 19 liters to 23 liters. The total cropped area of 784.80 hectares had water demand of 28056.09 m3. Image classification showed 132.93 hectares (16.93%) of crops were affected by crown choke disease. Cumulative average water requirement is equal to 21.26 liters. The results are in agreement with the findings of Balasimha et al.(1996).