Effect of Irrigation Frequency and Tillage Practices on Rice Growth and Yield Parameters in Adamawa State Nigeria
Sustainable and economically affordable irrigation and tillage practices are needed to increase rice production in Nigeria for the growing population. Experiments were conducted in a split plot design with three replications at Lake Geriyo Irrigation scheme farms in Yola, Nigeria. Three irrigation intervals (3, 6 and 9 days) and three tillage practices (zero, minimum and deep) were imposed on rice during the dry seasons of 2012 and 2013. Results indicated that both irrigation intervals and tillage practices had significant influence on growth parameters while; irrigation has the most influenced on yield attributes. Higher paddy yields (3834.57 and 3753.52 kg ha-1) and harvest index (45.10 and 44.89%) were recorded with 3 days irrigation interval closely followed by 6 days irrigation interval in both years respectively. Significant interactive effect was observed to be higher with 3 days irrigation interval and deep tillage on number of tillers and plant height, while straw weight and harvest index were higher with 3 days irrigation interval and zero tillage. Irrigation intervals of between 3 to 6 days with zero tillage for rice can conveniently reduce irrigation water and labour requirement with sustainable yields in the study area.
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