Okra growth, yield and aborted seed as affected by gibberellic acid using stem injection

Abstract

The study was conducted to evaluate the effect of different concentration of gibberellic acid (GA3) on okra growth and development. The stem injection innovative method of application was used in this experiment rather than spray as common and traditional method. Stem injection method was applied on the stem of okra plant using GA3 at different concentrations. The higher concentrations (100 mg/l) of GA3 greatly increased the plant height compared to the control. GA3 application at 100 mg/l induced the highest value of stem girth over the control. The chlorophyll content in leaves was affected significantly by different concentrations of GA3. It was found that all concentrations of GA3 (25, 50, 100 and 200 mg/l) increased chlorophyll content per leaf by 37, 45, 60 and 55% compared to the control. The pod per plant, pod length, pod diameter, pod size, per pod weight and healthy seeds percentage per pod were significantly affected by different concentrations of GA3. The 100 and 200 mg/l concentrations of GA3 had increased the production of healthy seeds compared with control.