Vol. 9, Special Issue 12, Part U (2025)

Vitamins can act as cofactors which are required to various metabolic reactions and plays an important role in regulating plant growth and development. In the present study, we observed the efficiency of four levels (25, 50, 75 and 100 ppm) of four different vitamins of ascorbic acid, thiamine, folate and niacin applied foliar, including control (water spray) in a randomised block design with three replications. The results revealed that application of all vitamins at all levels exerted a significant effect on the most studied characters and yield of the turmeric. Ascorbic acid spraying especially at 100 ppm concentration recorded significantly highest yield (37.39 t ha^-1) and economic returns (1.70) as compared to control and other treatments. Growth, yield and quality characters were highly positively correlated with each other among the treatments. Overall, the yield performance of turmeric and BC ratio has been improved by the application of vitamins and considered as suitable growth regulators for higher turmeric production.