Partial factor productivity of Soybean [Glycine max (L.) Merrill] under ‘Tarai’ conditions of Uttarakhand
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Date
2020-11
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G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand)
Abstract
The field experiment was conducted during Kharif’ season 2019 at Norman E. Borlaug Crop Research Centre of Govind Ballabh Pant University of Agriculture and Technology, Pantnagar to study the different factors affecting soybean yield and yield attributes and to determine N, P, K, S, protein content, oil content and economics of different factors in production of soybean. Soybean variety "SL 958" was sown on 28 June 2019 and harvested on 4 November 2019. The soil of the experimental field was Silty clay loam having high organic carbon (1.18%), low in available nitrogen (230 kg/ ha), medium in available phosphorus (22.5 kg/ha) and low in potassium (132 kg/ha). The experiment was laid out in a Randomized block design with four replications to evaluate seven treatments comprising of T1: Full package (seed treatment with fungicide, seed inoculation with Bradyrhizobium, recommended dose of fertilizers, weed management, insecticide application and ridge furrow method), T2: Full package except seed treatment with fungicide, T3: Full package except seed inoculation with Bradyrhizobium, T4: Full package except recommended dose of fertilizers, T5: Full package except weed management, T6: Full package except insecticide application and T7: Full package except ridge furrow method. The result obtained during the course of investigation revealed that Treatment T1 had significantly higher plant height at 30, 60 and 90 DAS. Dry weight per plant was recorded highest for T1 treatment at 60, 75 and 90 DAS. Number of branches per plant (30, 60 DAS and at harvest), and number of pods per plant at harvest were highest for T1 treatment. CGR and RGR were calculated highest for T1 treatment at 75-90 DAS. In case of physiological parameters (Rainfall Use Efficiency and Grain Use Efficiency), T1 treatment showed best results amongst all the other treatments. Highest yield (grain yield, straw yield and total yield) was recorded under T1 treatment. T1 treatment proved out to be the most economic treatment above all other treatments with maximum Net Returns, Gross Returns and B:C Ratio. In Analysis of soil and plant after the harvest of crop, T1 treatment recorded highest for available N, P, K and S (Kg/ha) in soil, highest nutrient content (%) and uptake (Kg/ha) in seed and straw of Treatment T1 as compared to other treatments. Highest quality parameters viz. oil and protein was recorded for samples of Treatment T1. Thus, for realizing higher productivity, better quality and most economic returns, full package of practices
should be considered in Tarai conditions of Uttarakhand.