Foliar nutrition for higher soybean productivity in north western plain zone of IndiaPantnagar Journal of Research, Volume - 20, Issue - 1 ( January-April. 2022)
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A field experiment was conducted at the N.E. Borlaug Crop Research Centre, Govind Ballabh Pant University of Agriculture and Technology, Pantnagar, Uttarakhand during kharif-2016 and 2017 seasons, to study the response of foliar nutrition on soybean crop. The treatments included T-1 Recommended Dose of Fertilizer (RDF)20:60:40, N:P2O5: K2O + water spray at pod initiation, T-2 RDF + Urea 2% spray at pod initiation, T-3 RDF + Di Ammonium Phosphate 2% spray at pod initiation, T-4 RDF + Muriate of Potash 0.5% at pod initiation, T-5 RDF + 19:19:19 (N,P2O5, K2O) 2% spray at pod initiation, T-6 RDF + sodium molybdate 0.5% spray at pod initiation, T-7 RDF + borax 0.5% spray at pod initiation, T-8 RDF + chelated zinc 0.5% spray at pod initiation and T-9 RDF (20:60:40, N, P2O5, K2O) only. Foliar application of nutrients was done at pod initiation stage and RDF was applied as basal at the time of sowing. Application of RDF + 19:19:19 (N,P2O5, K2O) 2% spray at pod initiation stage in treatment T-5 resulted in higher yield attributing characters viz. , branches per plant and pods per plant during both the years. The highest seed and haulm yield was also recorded in the treatment T-5 (RDF + 19:19:19 (N, P2O5, K2O) 2% spray at pod initiation. The per cent increase in seed yield due to treatment T-5 was 26.7 and 13.9 per cent over RDF alone during 2016 and 2017 respectively. The highest harvest index of 28.85 and 27.57 was also recorded in the treatment T-5 (RDF+ 19:19:19, 2% spray at pod initiation) during 2016 and 2017, respectively.
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