Author(s):

KKK Reddy, AK Singh and RS Singh

Abstract: A field experiment with maize was conducted during rabi 2016-2017 on silty loam soils at Agronomy Research Farm, Narendra Deva University of Agriculture & Technology, Kumarganj, Faizabad (U.P.). The experimental design was split plot design with three replicates. The objective of this study was to determine the effect four planting geometry viz., 60 × 10 cm, 60 × 15 cm, 60 × 20 cm, 60 × 25 cm and four moisture regimes viz., 0.6 IW/CPE ratio, 0.9 IW/CPE ratio, 1.2 IW/CPE ratio, 0.9 IW/CPE ratio up to silking and 1.2 IW/CPE ratio for rest of the crop season on water productivity of rabi maize. Among the planting geometry, highest irrigation water productivity (1.01 kg/m³), input water productivity (0.98 kg/m³) and real water productivity (1.29 kg/m³) was recorded in 60 × 25 cm, while the lowest irrigation water productivity (0.88 kg/m³), input water productivity (0.85 kg/m³) and real water productivity (1.00 kg/m³) was recorded in 60 × 10 cm. With respect to different moisture regimes tried highest irrigation water productivity (1.36 kg/m³), input water productivity (1.30 kg/m³) and real water productivity (1.40 kg/m³) was recorded in 0.6 IW/CPE ratio, while the lowest irrigation water productivity (0.83 kg/m³), input water productivity (0.81 kg/m³) and real water productivity (1.01 kg/m³) was recorded in 1.2 IW/CPE ratio.

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