Yield, quality and nutrient uptake of soybean as influenced by water soluble fertilizer, micro-nutrient and plant growth regulators

Abstract

Yield, quality and nutrient uptake of soybean as influenced by foliar sprays of water soluble fertilizers, plant growth regulators and micronutrients was assessed by conducting the field experiment during kharif, 2012 at PGI Research Farm. The experiment was laid out in randomized block design with three replications. The treatment consist of foliar sprays of 19:19:19 N, P2O5 and K2O (0.5%), ZnSO4 (0.5%), H3BO3 (0.5%) and NAA (50 µg mL-1) alone and incombination with each other. Recommended dose of fertilizer (50:75:0 kg ha-1 N and P2O5 + 5 t ha-1 FYM) was applied to all the treatments. Foliar sprays of 19:19:19 (0.5%) + ZnSO4 (0.5%) + H3BO3 (0.5%) at 30 and 40 DAS was recorded higher grain and straw yield (22.70 and 21.00 q ha-1). It was at par with 19:19:19 (0.5%) + ZnSO4 (0.5%), 19:19:19 (0.5%) + H3BO3 (0.5%) and ZnSO4 (0.5%) + H­3BO3 (0.5%) + NAA (50 µg mL-1) at 30 and 40 DAS for grain yield (22.00, 21.75, 22.30 and 21.50 q ha-1, respectively). Total uptake of macro and micronutrients, protein and oil content was higher in soybean by foliar sprays of 19:19:19 (0.5%) + H3BO3 (0.5%) + ZnSO4 (0.5%) at 30 and 40 DAS.