EFFECT OF BIOFERTILIZERS AND FERTILITY LEVELS ON BLACKGRAM (Vigna mungo L.) UNDER CUSTARD APPLE (Annona squamosa L.) BASED AGRI-HORTI SYSTEM IN VINDHYAN REGION OF UTTAR PRADESH
Journal Title: International Journal of Agriculture Sciences - Year 2016, Vol 8, Issue 52
Abstract
An experiment was conducted at the Agricultural Research Farm of RGSC, Banaras Hindu University, Brakachha, Mirzapur during the rainy (kharif) season 2011. The experiment was laid out in a randomized block design with three replications and a set of 12 treatments involving four levels of biofertilizers [No biofertilizer, Rhizobium (Rhizobium, MOR-1),PSB (Pseudomonas aeruginosa, PSBBHU01) and Rhizobium + PSB] with 3 levels of fertility (control, i.e. 12 kg N + 30 kg P2O5 + 10 kg S, 24 kg N + 50 kg P2O5 + 20 kg S and 36 kg N + 70 kg P2O5 + 30 kg S/ha). Blackgram cv. ‘T-9’ was sown @ 20 kg/ha in 45 cm × 15 cm apart. Results showed that application of 36 kg N, 70 kg P2O5 and 30 kg S/ha gave the maximum values of growth parameters, yield attributes and grain yield as well as removal of N, P and S over lower fertility levels. Seed inoculation of Rhizobium and phosphate solubilizing bacteria (PSB) was also found to increased growth and yield parameters. Correspondingly, inoculation of the biofertilizers had resulted significant increased 21.4% of grain yield over non inoculation. Removal of N, P, and S was significantly increased with combination of Rhizobium and PSB inoculants as compared with single inoculation of either Rhizobium or PSB and the control (No biofertilizers). Further, under interaction effect the significantly highest grain yield was observed with the treatment combination of Rhizobium + PSB + 36 kg N, 70 kg P2O5, 30 kg S/ha (964.9 kg/ha) but remained at par with medium level of fertility 24 kg N, 50 kg P2O5, 20 kg S/ha (941.6 kg/ha) applied along with Rhizobium and PSB. However, the highest net return (₹62369/ha) and benefit: cost ratio (3.39) were observed under dual seed inoculation with Rhizobium and PSB along with application of 24 kg N, 50 kg P2O5, 20 kg S/ha.
Authors and Affiliations
J. K. SINGH
Keywords
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