Response of Nitrogen, Phosphorus and Potassium on Nutrient Content and Uptake by Mungbean (Vigna radiata L.)

Abstract

A two-year field experiment conducted at Rama University's farm in Kanpur, Uttar Pradesh during the kharif seasons of 2022 and 2023 aimed to assess the impact of different nutrient management strategies on nutrient uptake. Phosphorus, a crucial nutrient, is deficient in insoluble forms, causing low yields in mungbean. Biofertilizers offer a cost-effective, eco-friendly, and renewable alternative to chemical fertilizers. Inoculating pulse seeds with phosphorus-solubilizing agents boosts phosphorus availability for plant growth, enhancing mungbean productivity in the Central alluvial region of Uttar Pradesh. The study incorporated four varieties—PDM-139, IPM 2-3, Meha, and IPM 2-14—alongside varying levels of nutrient management practices. These practices involved N0 (Control), N1, N2, and N3, each with distinct combinations of nitrogen, phosphorus, zinc sulfate, seed treatment with rhizobium culture, and phosphate-solubilizing bacteria (PSB). The experiment followed a factorial randomized block design with three replications. Findings indicated that the application of 20 kg N + 40 kg P2O5 + 25 kg ZnSO4.H2O ha-1, coupled with seed treatment involving rhizobium culture and PSB at 2.5 kg ha-1 in soil, significantly enhanced nutrient uptake in the Central alluvial tract of Uttar Pradesh.