Dima Kharmashow(1)*, Miteadi Bouras(1) and Fahed Sahuni(1)
(1). Faculty of Agriculture, Tishreen University, Lattakia, Syria.
(*Corresponding author: Dima KharmashowE-Mail: khrmashowdima@gmail.com)
Received: 4/04/2023 Accepted: 24/05/2023
Abstract:
The research aims to study the effect of foliar spraying of okra plants (Abelmoschus esculentus L.) with different concentrations of gibberellic acid GA3 (25,50,75,100 ppm) on the speed of ripening, the quantity and quality of pods production. The study was carried out in the village of Dbeika in the district of Al-Muzairah (Lattakia, using okra (local) variety, the research was conducted in a randomized complete block design, with three replicates per treatment and an average of (15) plants per replicator.The results in the biological parameters showed that the spray treatment at a concentration of 75 ppm had effect in accelerating ripening, as it gave the best values in the height of the first pod on the main stem (29.8 cm), the number of non-fruiting nodes that precede the first pod (6 nodes), and in the length of the growth period. which recorded (50.5 days) compared to control plants. The results also showed the treatment with GA3 concentration of 75 ppm in the indicators of pods production, where the best values and the highest results were recorded in the number of total pods (90.5 pod), fruit weight (11.8 g / pod), production per plant (1067.9 g / plant) and in efficiency. Productivity (60.5%) compared to control plants, which recorded (72.1 pod, 7.1 g/pod, 421.7 g/plant ), respectively. The results also showed the effect of spraying at a concentration of 75 ppm on pods quantity, and recorded (15.60%, 2.63%, 0.9%)on dry matter,protein and ash, respectively, and the lowest in the percentage of fibers with a value (1.12%). .
Keywords: okra, gibberellin acid, GA3, biological parameters, productivity parameters, pod quality.
Full paper in Arabic: pdf