The present investigation was designed to evaluate the effects of different doses of zinc (5.3, 6.3, 7.3, 8.3 & 9.3 mg lit−1) and combined effect of zinc with magnesium and sucrose on growth of two cultivars (PU-35 & T-9) of black gram (Vigna mungo L. Hepper). A concentration dependent decrease in plant height, fresh weight, chlorophyll, carbohydrate and protein content as well as NR activity was observed in both the cultivars. However, proline content increased with increase in doses of zinc. All the doses of combined treatments (zinc with magnesium and sucrose) were able to alleviate reduction caused by zinc but the alleviation was more pronounced with magnesium supplementation than sucrose.
Antagonism, magnesium, sucrose, zinc
