Singh, DevendraYadav, Dinesh Kumar2018-01-312018-01-312016http://krishikosh.egranth.ac.in/handle/1/5810040134A field experiment was conducted during kharif 2015 at experimental farm, Tirhut College of Agriculture, Dholi, (Muzaffarpur) to study the effect of micro and secondary nutrients on growth, yield and quality of blackgram (Vigna mungo (L) Hepper). The experiment was laid-out in a randomized block design (RBD) with eight treatments, each having four replications. The treatments were T0: RDF (control), T1: RDF + B, T2: RDF + Zn, T3: RDF + S, T4: RDF + B + Zn, T5: RDF + B + S, T6: RDF + Zn + S and T7: RDF + Zn + B + S. Uniform basal application was made with 20 kg N ha-1, 40 kg P2O5 ha-1, 20 kg K2O ha-1 through urea, DAP and MOP, respectively. Sulphur, Zn and B were applied @ 20, 5 and 1.5 kg ha-1 from Bentonite-S, Zinc sulphate and Di-sodium tetra-borate pentahydrate, respectively. Plant height at 40 DAS, number of branches plant-1, number of nodules plant-1 at 40 and 50 DAS, number of pods plant-1, number of grains pod-1, test weight, grain yield kg ha-1, straw yield kg ha-1, protein content, gross return, net return and B: C ratio of urdbean significantly affected due to various treatments except plant population, plant height at 20, 60 DAS and at harvest, number of nodules at 60 DAS and harvest index. The higher grain yield (838 kg ha-1) and straw yield (2472 kg ha-1) were obtained due to application of Zn + B + S. Among different treatments, T7 (Zn + B + S) recorded maximum protein content (24.07 %) in grains which was significantly superior over check (20.62 %). After one month incorporation of blackgram biomass (100%) in the respective treated plots, significantly improved the available N, P, Zn and B over control. The higher available N (272.14 kg ha-1), P2O5 (21.7 kg ha-1), Zn (0.85 mg kg-1) and B (0.74 mg kg-1) were analyzed with treatment Zn + B + S while lowest available N (258.25 kg ha-1), P2O5 (15.14 kg ha-1), Zn (0.64 mg kg-1) and B (0.53 mg kg-1) was recorded under control. Higher gross return (67040 ha-1), net return (41940 ha-1) and B: C ratio (1.67) was found with combined application of Zn, B and S.ennullThesis