Nano-Fertilizers Mediated Approaches for Nutrient Management in Urdbean (Vigna mungo L.) in the Sandy-loam Soil of Western U.P.

Abstract

A field experiment was conducted during kharif season 2022 at Crop Research Centre of Sardar Vallabhbhai Patel University of Agriculture & Technology Meerut (U.P.) India to study the ―Nano-Fertilizers Mediated Approaches for Nutrient Management in Urdbean (Vigna mungo L.) in the Sandy-loam Soil of Western U.P.‖. The soil of the experimental field was well-drained, sandy loam in texture, and slightly alkaline. It was low in organic carbon and available nitrogen but medium in phosphorus and potassium. The treatments were; eight nano fertilizer treatments viz.(T1) Control, (T2) 100% NPK + S + Zn, (T3) 100% NPK + S + Nano Zinc Spray (At 20 & 40 DAS), (T4) 100% NPKS + Bio-stimulant, (T5) 75% NPKS + NPK (19:19:19) @ 0.5% spray at 20 DAS + Bio-Stimulant (T6) 75% NPKS + Zn @ 5kg ha-1 + Bio-Stimulant + Nano Nitrogen + Nano Zinc spray at 20 DAS, (T7) 75% NPK + S + NPK Consortia + Nano Zinc Spray at 20 DAS and (T8) 75% NPKS + NPK Consortia was laid out in RBD design with three replications. Results of the experimental field revealed that growth parameters viz., plant height, dry matter accumulation, LAI and yield attributes i.e. pod length, number of pod/plant, number of seed/pod and test weight were significantly maximum in treatment (T6) which was at par with (T5). The grains, straw, and biological yield (12.54; 20.10 and 32.64 q ha-1) and harvest index (38.42%) were found higher under treatment (T6). The maximum available NPK and Zn (200.2, 12.8, 196.6 kg ha-1 and 0.70 g ha-1). Treatment (T6) had 35.5% cost of cultivation over control treatment. The maximum gross return was recorded into the treatment (T6) followed by (T5) and (T3). To achieve highest grain and straw yield of urdbean with higher profit, application of (T6) 75% NPKS + Zn @ 5kg ha-1 + Bio-Stimulant + Nano Nitrogen + Nano Zinc spray at 20 DAS is better option.