Author(s):

NS Suradkar, ND Parlawar, SU Kakade, MR Deshmukh and SS Sarode

Abstract: A field investigation entitled " Effect of drip fertigation and its interval on growth and yield of wheat (Triticum aestivum L.)” was carried out at Department of Agronomy Farm, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola during the Rabi season of 2019-20. The experiment was laid out in Randomised Block Design with four replications and eight different irrigations and fertigation treatments imposed for wheat crop with an objective to study the effect of drip fertigation interval on growth, yield of wheat and economics of wheat crop through drip fertigation. The experimental site was established with inline drip irrigation system (16 mm) lateral laid out at 90 cm with 50 cm dripper spacing. Irrigation water was applied through drip irrigation system on every alternate day based on cumulative pan evaporation and surface irrigation water was applied at 1.0 IW/CPE ratio. Experiment results revealed that, the drip fertigation with 100 per cent recommended dose of N and K applied at seven days interval significantly improved the growth characters viz., plant height, number of tillers, number of leaves, leaf area index, total dry matter plant^-1, growth indices and yield contributing characters. Drip fertigation with 100 per cent recommended dose of N and K in seven days interval recorded higher grain yield of 5653 kg ha^-1 which was at par with 100 per cent drip fertigation of recommended NK in fourteen days interval with grain yield of 5580 kg ha^-1. The highest gross monetary returns (₹133567 ha^-1) and net monetary returns (₹85999 ha^-1) and B: C ratio (2.81) was registered in the treatment receiving drip fertigation at 100 per cent NK ha^-1 in seven days interval and found at par with drip fertigation with 100 per cent recommended dose of N and K in fourteen days interval than lower level and conventional method of fertilizer application in drip and furrow irrigation method.

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