Water allowance of canal command is one of the key factors in improving the crop productivity and needs to be rationalized. The water allowance for early canal system was designed on average cropping intensity and area to be irrigated. Water allowances are different for different canal commands and these affects command area differently. For command areas where design water allowances are high than the crop water requirements it causing water logging, while in areas where design water allowances are low, un- satisfactions to crop water requirements has been observed that resulted in...