Optimal Use of Plant Growth Regulators for Improved Growth, Yield, and Economic Returns of Winter Tomato (Solanum lycopersicum) in arid regions: OPTIMIZATION OF PLANT GROWTH REGULATORS USE IN TOMATO

Santosh Choudhary; Suman Poonia; S. K. Moond; P.R. Raiger; Moola Ram; Ronak Kuri

doi:10.59512/aaz.2024.63.1.13

Authors

Santosh Choudhary College of Agriculture, Agriculture University, Jodhpur
Suman Poonia
S. K. Moond
P.R. Raiger
Moola Ram
Ronak Kuri

https://doi.org/10.59512/aaz.2024.63.1.13

Keywords:

4-CPA, Economic Optimum Dose, Fruit Yield, GA3, NAA

Abstract

A field experiment was conducted to optimize the application of plant growth regulators in tomato cultivation during rabi, 2021-22. The objective was to assess their effects on growth, yield attributes, fruit yield, and economics. The experiment included 10 treatments with three plant growth regulators (GA3, 4-CPA, and NAA), each applied at three levels (25, 50, and 75 µg mL-1), along with a control (water). The experimental design was a randomized block with three replications. Results indicated that GA3 and NAA significantly
enhanced plant height, the number of branches, fruit yield, and economic returns. Conversely, 4-CPA adversely affected yield and consequently economic returns. Optimal dosages for GA3 and NAA were identified at 53.5 µg mL-1 and 63.1 µg mL-1, respectively, using second-order polynomial regression (y=ax2+bx+c). This resulted in tomato yields of 29.55 and 29.69 t ha-1, respectively. NAA treatments stood out, providing the highest net returns (Rs. 4,80,447 ha-1) and a favourable B:C ratio of 4.26:1, making it a promising choice for tomato cultivation

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Author Biography

Santosh Choudhary, College of Agriculture, Agriculture University, Jodhpur

Department: Horticulture

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