Abstract:
In Bangladesh, okra is an important popular summer vegetable. However, traditional farming practices often lead to
suboptimal yields. Thus, the study was designed to determine the ideal GA3 and NAA doses for accelerating okra growth,
yield, and quality characteristics. A three-replication, randomized complete block design was adopted. Foliar sprays with
three concentrations of GA3 (0 ppm, 150 ppm, and 250 ppm) and NAA (0 ppm, 150 ppm, and 250 ppm) were applied in
2022 and 2023. In comparison to the control, the combined application of GA3 @ 150 ppm and NAA @ 150 ppm improved
plant height, leaf number, leaf area, branch number, internode length, bud number, pod number, pod length, pod diameter, and 1000 seed weight average over the two years. Furthermore, GA3 @ 150 ppm with NAA 150 ppm increased yield
by 35.08% and 27.01% in 2022 and 2023 respectively, above the control. Combining NAA @ 150 ppm with GA3 resulted in
higher levels of vitamin C, TSS, magnesium, and zinc by 19.31%, 81.2%, 22.73% and 21.43% in 2022 and 22.83%, 50.57%,
18.07%, 33.33% in 2023 respectively, compared to the control. In contrast, GA3 and NAA decreased potassium and calcium
in both year when compared to the control. Overall, the results of this experiment indicated that using GA3 @ 150 ppm
with NAA @ 150 ppm could enhance okra growth, yield, and quality. These findings provide insightful information for
improving okra cultivation techniques and improving Bangladesh’s productivity in agriculture and food security.
