Effect of Zinc and Iron on Growth and Productivity of Summer Mungbean

Micronutrients like zinc and iron play an important role in growth and development of mungbean. The scarcity of these micronutrients also has an impact on seed quality of mungbean. A field experiment on optimization of nutrient management practices through soil and foliar application in mungbean was conducted during summer season 2021. The treatments included control, 0.5% ZnSO4 at flower initiation (FI), 0.5% ZnSO4 at FI & pod initiation (PI), 0.5% FeSO4 at FI, 0.5% FeSO4 at FI & PI, 0.5 % ZnSO4 & 0.5% FeSO4 at FI, 25 kg ha-1 ZnSO4 soil application, 50 kg ha-1 FeSO4 soil application. Plant height (29.85 cm), number of branches per plant (8) and number of nodules per plant (16) were improved significantly by foliar spraying of 0.5% ZnSO4 and 0.5% FeSO4 at FI. Significantly maximum no. of pods per plant, seeds per pod, seed yield (521 kg ha-1) and stover yield (1307 kg ha-1), net returns (Rs. 8020/ha) and benefit cost ratio (1.28) were recorded under 0.5% ZnSO4 and 0.5% FeSO4 spray at Flower initiation stage.