Growth and yield of soybean as influenced by of graded nitrogen and phosphorus dose or under rainfed situations Mangaraj Satyabrata*, Malligawad LH1, Sadhana V1, Paikaray RK1, Sahoo TR1 Odisha University of Agriculture and Technology, Bhubaneswar 1University of Agricultural Sciences, Dharwad *E-mail: satyabratamangaraj7@gmail.com
Online published on 23 August, 2019. Abstract A field experiment was carried out during kharif 2015 with thirteen ratios of nitrogen and phosphorus fertilizers with constant potassium level (25 kg K2O ha−1) on soybean cultivar DSb 21 at MARS, UAS, Dharwad. The seed yield increased due to increasing N/P ratios up to 0.78. The treatment receiving N/P fertilizer ratio of 0.70 (basal application of 18 kg N, 46 kg P2O5, 25 kg K2O ha−1 + foliar application of nitrogen@7 kg N ha−1 at initiation of flowering and foliar application of nitrogen@7 kg N ha−1 at 15 days after first foliar spray) recorded significantly higher seed yield (3217 kg ha−1), total number of pods plant−1 (47.57), 100 seed weight (15.40 g) and seed weight plant−1 (18.31 g). This treatment also recorded significantly higher leaf area plant−1 (12.62 dm2), leaf area index (4.21) and total dry matter production (34.15 g) Top Keywords Fertilizer ratio, Foliar application, Leaf area, Rainfed, Seed yield. Top |