Response of organic pigeonpea to drip irrigation, micronutrients and growth regulators in northern dry zone of Karnataka

Abstract

A field experiment was conducted to study the “Response of organic pigeonpea to drip irrigation, micronutrients and growth regulators in Northern Dry Zone of Karnataka” under medium deep black soilsat Instructional Farm, agriculture college, Vijayapura during Kharif 2018. The experiment was laid out in strip-split plot design and replicated thrice. There were twenty treatment combinations comprise of five irrigation levels as main plots and foliar application of micronutrients and growth regulators as four sub plots. The result show that among different irrigation levels, scheduling of irrigation at 40 mm Ep recorded significantly higher number of pods plant-1 (185.6), seed weight plant-1 (72.9), grain yield (1942 kg ha-1), stalk yield (6437 kg ha-1), net returns (Rs.61341 ha-1) and BC ratio (2.11) and which were on par with irrigation at 30 mm Ep. Among different growth regulators and micronutrients, foliar application of 50 ppm NAA + 0.2% boron + 0.5% ZnSO4 recorded significantly higher number of pods plant-1 (183.0), seed weight plant-1 (69.8), grain yield (1851 kg ha-1), stalk yield (6249 kg ha-1), net return (Rs. 58,844 ha-1) and BC ratio (2.07). Among the interactions scheduling of irrigation at 40 mm Ep along with foliar spray of 50 ppm NAA + 0.2% boron + 0.5% ZnSO4 recorded significantly higher number of pods plant-1 (196.3), seed weight plant-1 (87.6), grain yield (2259 kg ha-1), stalk yield (7203 kg ha-1), net returns (Rs. 81,017 ha-1) and BC ratio (2.50).