Effect of Plant Growth Regulators on the Growth, Yield and Quality of Tomato (Solanum lycopersicum L.)

Abstract

The present investigation entitled Effect of plant growth regulators on the growth, yield and quality of tomato (Solanum lycopersicum Cv. TMTH-234) was carried out at the Horticulture Research Farm, Department of Horticulture, Naini Agricultural Institute, Sam Higginbottom University of Agriculture Technology and Sciences, Prayagraj, Uttar Pradesh during Kharif in- 2022-23. The experiment was laid out in a randomized block design with 19 treatments and three replications. Different plant growth regulators (PGRs) (NAA, GA3, and IAA), were used in different combinations and doses. Among the various treatments significant results were showen by T18 (GA3@90ppm + NAA@45ppm) best in terms of plant height (123.93 cm), days to first flowering (42.3 DAT), days to 50% flowering (49.83 DAT), days to the first harvest (85.63 DAT), number of flower cluster per plant (7.87), fruit set per cluster (8.07), polar diameter (63.13 mm), equatorial diameter (63.33 mm) , number of fruit per plant (17.27), individual fruit weight (112.63 g), average weight of 10 fruit (1126.33 g), average fruit yield per plant (1.95 Kg), total yield per plant (5.84 Kg), fruit yield per hectare (216.3 t), TSS (6.07°Brix) and ascorbic acid (20.3 mg/100g).