INFLUENCE OF VARIETIES AND CROP GEOMETRIES ON NUTRIENT CONTENT AND NUTRIENT UPTAKE OF NPK IN SOYBEAN (GLYCINE MAX (L.) MERRILL.)E. ANUSHA, K.B. SUNEETHA DEVI, O. SAMPATH AND G. PADMAJA
AbstractâA field experiment was conducted at College farm, Agricultural College, Polasa, Jagtial, PJTSAU, during the kharif season of 2018 to study the âEvaluation of varieties at varied crop geometry for yield maximization in soybeanâ. The experiment was laid out in split-plot design with three replications to evaluate the performance of promising varieties of soybean (V1- Basar, V2- JS 335, V3- KDS 756 and V4-MACS 1281) and to standardize the crop geometry for Soybean varieties (S1-45x10 cm, S2-30x10 cm, S3- 45x 05 cm and S4- 35 x 05 cm) under rainfed semi arid conditions of Telangana. Crop was shown on 03 July, 2018 at varied crop geometry and each variety was harvested according to their duration as variety KDS756 and JS335 were harvested at 95 DAS while MACS 1281 at 98 DAS and Basar was harvested at 103DAS respectively. The experimental soil was sandy clay loam in texture, slightly alkaline in reaction, medium inorganic carbon, low in available nitrogen, high in available phosphorus and available potassium. The results indicated that NPK content was found to have no significance due to varieties and crop geometry in seed and straw but NPK uptake was significantly higher with variety KDS 756 compared to rest of the varieties. NPK uptake was higher under crop geometry 30 x 10 cm which was at par with 45x05 cm and lowest at 45x10 cm which was mainly due to yield compensation at narrow geometry by higher plants per unit area.