Kuntennagari Krishna Kishore, Pradeep Rajput, Talakonda Vamsi and Shashank K.M.
Abstract
Phosphorus (P) and zinc (Zn) are essential nutrients for green gram development and productivity. Phosphorus enhances root development, energy transfer, flowering, and seed formation, which increases yield and oil content. Zinc is necessary for enzyme activity, auxin synthesis, and reproductive development, which improves pollen viability and seed quality. Their combined application boosts nutrient uptake, seed yield, and oil content. The field experiment was conducted in the winter (Rabi) seasons of 2024-25 on sandy loam soil of the Crop Research Centre 1 (CRC-1) ITM University Gwalior (M.P.). The objective of this study was to evaluate the influence of Phosphorus and Zinc Fertilization on green gram plant growth, grain yield, and economics. In the 2024-25 Rabi season, nine treatments were tested in a randomised block design (RBD) with three replications, including three phosphorous levels (20, 40, and 60 kg ha-1) and three zinc fertilizations (5, 7.5, and 10 kg ZnSO4 ha-1). The studyâs findings revealed that increasing the phosphorus level considerably boosted different growth characteristics and seed output of green gram. Most of the features were maximum at 60 kg P2O5/ha. The application of 10 kg ZnSO4 per ha resulted in significantly greater green gram growth and yield. Furthermore, the application of 40-kilogram P2O5/ha, along with 7.5 kg ZnSO4/ha, is most effective in increasing the gross return and benefit cost ratio of green gram.