Summer groundnut crop performance and economics under micro sprinkler irrigation at various water application levels

The field experiments were conducted for consecutive three years to assess the crop performance and economics of micro sprinkler system for groundnut (GG-2) during summer season (Feb. to May). Total six treatments having different water application levels based on IW/CPE like 0.6, 0.7, 0.8, 0.9, 1.0 and 1.2 were selected. The lowest pod yield of 1471 kg/ha and highest pod yield of 2550 kg/ha could be obtained at the IW/CPE of 0.6 and 0.9 respectively requiring 523 and 789 ha.mm/ha of irrigation water respectively. The treatment of IW/CPE of 0.8 wasfound statistically better one having the highest water use efficiency of 3.406 kg/ha.mm. The IW/CPE of 0.8 was found most economical water application level. Also, in case of excess water supply (IW/CPE=1.2) and deficit water conditions (0.6), the micro sprinkler wasnot that profitable.