Apurva Sinha, Ankit Singh, Yogesh Chandra Patel, Sunil Singh, Kul Bhooshan Anand and Anurag Kumar Singh
Abstract
The present experiment entitled âImpact of plant growth regulators on growth and yield of tomato (Solanum lycopersicum L.) under eastern Uttar Pradesh conditions. cv Kashi Visheshâ was conducted in 2024-2025 at the horticulture farm in faculty of agriculture, Udai Pratap Autonomous College, Varanasi (U.P.) to study about the effects of plant growth regulators GA3 and NAA at different quantity to examine their effects on tomato plants growth and yield. The treatments used in different concentration of GA3, NAA and their combinations at 10, 20 ppm GA3, 15, 25 ppm NAA, GA3@10ppm + NAA@25ppm, GA3@20ppm +NAA@35ppm, and control. The results shows significant increase in average height of plant (cm), number of branches per plant, days to 50% flowering, number of cluster per plant, number of leaves per plant, days to first fruit picking, number of fruits per plant, fruit length (cm), fruit weight(g), fruit diameter (cm), fruit yield (kg/plant), fruit yield (kg/plot), fruit Yield (Q/ha). Maximum yield was recorded under GA3@20ppm+NAA@35ppm, followed by GA3@10ppm+NAA@25ppm. These results show that plant growth regulators play a vital role in enhancing the productivity of tomato.