Evaluation of Different Microbial Inoculums on Kharif Mung Bean (Vigna Radiata L.)

Abstract

A field experiment was conducted to study the Evaluation of Different Microbial Inoculums on Kharif Mung Bean (Vigna radiata L.) during the kharif season of 2020 at Technology Park of Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut (U.P.). The soil of the experimental field was well drained, sandy loam in texture and slightly alkaline in reaction. It was low in organic carbon and available nitrogen, medium in available phosphorus, potassium and zinc. Ten treatments viz., Control, RDF (20:40 kg/ha), PSB @ 20 ml/kg, KSB @ 20 ml/kg, ZSB @ 20 ml/kg, PSB+KSB, each @ 20 ml/kg, PSB+ZSB, each @ 20 ml/kg, KSB+ZSB, each @ 20 ml/kg, NPK Consortia @ 20 ml/kg and NPK Consortia+ZSB, each @ 20 ml/kg were tested in RBD with 3 replications. Results revealed that the growth parameters and yield attributing characters of mung bean viz., pods/plant, grains/pod, test weight and grain yield/plant were significantly improved by various treatment over control, being highest under NPK Consortia+ZSB, each @ 20 ml/kg. Similarly, this treatment also produced 133.1 % higher nodules/plant at flowering stage, beside accumulation of 59.8 % more dry matter/plant than control. The significantly lowest dry matter accumulation (11.7 g/plant) and effective nodules/plant (17.8) were recorded with control. Accordingly, highest seeds (1106 kg/ha) and straw (2154 kg/ha) yields were recorded with this treatment. Moreover, NPK Consortia+ZSB, NPK Consortia and RDF (20:40 kg/ha) outyielded control by 57.8, 50.2, and 46.1 %, respectively. Nutrient uptake (N, P, K, and Zn) by grans, straw and total also followed the almost similar trend. However, application of NPK Consortia+ZSB, each @ 20 ml/kg recorded higher available N, P, K and Zn followed by NPK Consortia @ 20 ml/kg and RDF (20:40 kg/ha). The crop grown with NPK Consortia+ZSB, each @ 20 ml/kg also fetched highest net return of ₹56388/ha with B:C ratio of 3.1. Though, the lowest values of gross return, net return and B:C ratio was observed under control.