Abstract
Exogenous application of plant growth regulators play a vital role on effectively enhancing plant growth along with crop output. In order to determine the effect of plant growth regulators and the ideal concentration of GA₃ and NAA for improved tomato growth and yield (Solanum lycopersicum L.) cv. MAHY-701 under Bhubaneswar condition, a field experiment was conducted in Rabi 2022 at Agricultural Research Station, Binjhagiri, Institute of Agricultural Sciences, Siksha "O" Anusandhan (Deemed to be) University, Bhubaneswar, Odisha using plant growth regulators, namely GA₃ and NAA. The experimental design was randomized block design, which consisted of three replications and seven treatments. When compared to the control treatment, all growth, yield, and quality parameters were shown to be significantly better at various concentrations of GA₃ (30, 60, and 90 ppm) and NAA (25, 50, and 75 ppm). The findings of the investigation reinforce the claim that, as compared to the control, tomato growth and yield were considerably affected by both GA₃ and NAA. The results categorically demonstrated that the treatment where the plant was sprayed with GA₃ @ 90 ppm had the highest total soluble solids (4.33°Brix), acidity (0.42%), and shelf life (18.73), as well as the highest number of fruits per plant (42.90), fruit length (6.40cm), fruit diameter (6.80cm), weight of fruit (118.80g), yield per plot (31.70kg), yield per ha. (423.50qt), and other quality attributes. In conclusion, farmers may be suggested to apply GA₃ at 90 ppm and NAA at 50 ppm when raising tomatoes in Bhubaneswar Agroclimatic environments for MAHY-701.
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