Irrigation Management Strategy for Vegetable Crops by using Harvested Rainwater under Stressed Condition
Journal Title: International Journal of Agriculture Innovations and Research - Year 2018, Vol 7, Issue 3
Abstract
Rainwater is perhaps the most important natural resource in rainfed agriculture. In the North Eastern Ghat Zone of Odisha, farmers do not feel comfortable for growing vegetables during Rabi season due to lack of irrigation facility. Farmers can grow vegetable if they can harvest the rainwater in the farm pond during Kharif season and utilize this harvested water effectively for irrigation purposes during Rabi season. In this context an experiment was designed to study different irrigation management strategy of harvested water for the four major vegetable crops such as cauliflower, tomato, french bean and radish during the Rabi season of 2015-16. Three irrigation treat- -ments were maintained based on predefined levels of maximum allowable depletion (MAD) of available soil water (ASW). The treatments were 10% (I1), 40% (I2) and 60% (I3) MAD of ASW. The highest yield was found when irrigation was applied at 10% MAD of ASW (I1) for all the four vegetable crops such as for cauliflower (65 q/ha), tomato (128.5 q/ha), french bean (62 q/ha) and radish (192 q/ha). Highest yield in all the vegetable crops were found in case of 10% MAD of ASW (I1) and low yield were found in case of 60% MAD of ASW (I3). It was observed that as the soil water stress in the root zone increases, the yield parameter decreases. However the soil water stress up to 40% depletion of ASW did not affect the yield parameters very much. Whereas, the highest water use efficiency (WUE) were found when irrigation were applied at 40% MAD of ASW for all the vegetable crops. Under stressed condition, when soil water stress is imposed during non-critical stages of growth, irrigation is to be applied at 40% MAD of ASW for these four major vegetable crops
Authors and Affiliations
S. K. Behera, et al.
Keywords
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