Alternate Wetting and Drying Irrigation for Rice Cultivation
Journal Title: International Journal of Agricultural Science and Research (IJASR) - Year 2017, Vol 7, Issue 5
Abstract
In the context of global energy crisis and water scarcity, the rice production system is undergoing changes, with the strategy to produce more rice with lesser amount of water. Impact of alternate wetting and drying (AWD) irrigation, as a water saving technique on rice yield has been overviewed in this paper. Rice was irrigated in continuous flood irrigation (CFI) method, maintaining 5 cm of standing water, throughout the cropping period. The experiment has revealed that, AWD method saved the irrigation water about 23%, over the continuous flood irrigation method. AWD is an irrigation practice (introduction of unsaturated soil conditions during the growing season), that can reduce water inputs in rice, yet, it has not been widely been adopted, due to the potential for reduced yields. Overall, AWD decreased yields by 5.4% (when soils dried beyond−20 kPa), compared to the continuous flood irrigation methods.
Authors and Affiliations
Vanitha. S, V. Ravikumar
Keywords
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