Effect of Foliar Spray of Boron and Different Zinc Levels on Growth and Yield of Kharif Greengram (Vigna radiata)

A field experiment was conducted during the kharif season of 2017 in greengram crop (var. PDM-139) at Crop Research Farm, Department of Agronomy, Naini Agricultural Institute, SHUATS, Allahabad (U.P.). The experiment was laid out in Randomized Block Design with consisting of frequency of foliar spray (0.2%) of 4 boron levels at different days of intervals (No. application control, 0.2%, foliar spray at 20 and 35 DAS and 0.2% foliar spray of borax at both stage (20 and 35 DAS) with basal application of 3 zinc levels (0kg control, 2.5kg ha-1, 5kg ha-1. The experimental results revealed that growth parameters viz. plant height (64.16cm), no. of branches per plant (7.80), no. of nodules (20.60), plant dry weight (8.48), Crop growth rate (CGR) (0.33g m-2 day-1) and yield attributes viz. no. pods per plant (23.86), no. of grains per pod (12.40), grain yield (2.18t h-1), straw yield (2.96 t ha-1) were significantly recorded higher under treatment T12 20 and 35DAS (0.2% foliar spray) of boron+5.0kg ha-1 of zinc.