Foliar application of gibberellic acid in combination with cow dung enhances growth and yield attributes of okra (Abelmoschus esculentus)

Abstract

A field experiment was conducted at the Horticulture Farm of Bangladesh Agricultural University, Mymensingh during March to July 2020 to investigate the results of various amount of cowdung and gibberellic acid (GA3) on okra growth and production. The experiment comprised of Factor A: three doses of cowdung such as C0 = 0 ton (Control), C1 = 5 t ha-1 , C2 = 10 t ha-1 and Factor B: four variable concentrations of GA3 such as G0 = Control (with no gibberellic acid), G1 = 50 ppm gibberellic acid, G2 = 100 ppm gibberellic acid and G3 = 150 ppm gibberellic acid. Three replications of the experiment were set up using a Randomized Complete Block Design (RCBD). Most of the developmental and yield-contributing parameters of the okra tested significantly varied when various quantities of cowdung and varying amounts of gibberellic acid were used. The 10 t ha-1 cowdung (C2) had the maximum yield (11.34 t/ha) as well as the amount of green pods (13.77) per plant. From a 0 t ha1 cowdung (C0) treatment, the fewest green pods (14.18), and lowest green pod production (5.98 t/ha), were produced. On the other hand, gibberellic acid with 100 ppm (G2) showed the best performance on number of green pods (13.77), green pod output (10.51 t/ha) and the lowest performance on number of green pods (10.05), green pod produce (6.47 t/ha) from control (G0) treatment (without gibberellin). Okra's development and yield-contributing characteristics were greatly impacted by the interaction of cowdung and gibberellic acid. The integration of 10 t ha-1 cowdung (C2) and 100 ppm gibberellic acid performed the best on the number of green pods (15.91), green pod yield (13.47 t/ha) tremendously non-identical from the combination of treatment of 0 t ha-1 (C0) with no gibberellic acid applied plants in the same parameters viz. number of green pods (7.72), green pod yield (4.13 t/ha). The finding of this study suggested that application of 10 tons cowdung per hectare combine with 100 ppm gibberellic acid to be recommended for okra cultivation.