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The effect irrigation method and tillage on yield and irrigation water productivity of rice was conducted in split plot experiment with three replications during the dry seasons 2012 and 2013 in field conditions at the Lake Geriyo Irrigation scheme farms in Yola, Nigeria. 3 irrigation management: 3, 6 and 9 day interval with 3 tillage practices: zero, shallow and deep soil tillage were studied. Results showed that there were significant differences in paddy yield, harvest index and irrigation water productivity. 6 days interval irrigation management was placed to one group with 3 days irrigation interval on paddy yield and harvest index; higher water productivity of 3.58 and 3.51 kg ha-1 mm-1were recorded with 6 days irrigation interval in both seasons respectively. Therefore it can be recommended that 6 day interval irrigation which had better irrigation water productivity and saved up 29% irrigation water be adopted for rice cultivation under clay loam soils of guinea savanna zone of Nigeria.

Irrigation Water Productivity of Rice under Various Irrigation Schedules and Tillage Practices in Northern Guinea Savanna Region of Nigeria