The research was carried out on trees of the 18-year-old Sourani and Daebli olive varieties planted in the village of Al-Rabiah, west of Homs, about 10 km away, during the two agricultural seasons (2017 - 2018), (2018 - 2019) with the aim of finding out the effect of spraying olive trees with gibberellin GA3 on the alternate bearing phenomenon, quantity and quality of production. Where the process of spraying leaves with gibberellin with two concentrations (200, 400 ppm) on 5 dates, namely:
With a study of several indicators such as (length of parcel, length of phalanx, percentage of flower buds, amount of production, percentage of oil), and The design of the entire random sectors was used in the experiment.
The effect of the spraying treatments on the studied characteristics was clear, so the vegetative growth increased significantly and the oil percentage in both concentrations used, but it had a negative effect on the flower differentiation process, so the treatment (S6) was the best.
For the average package length for the two seasons of the study for the Sourani variety, it reached (28.38 cm). The percentage of pink buds in the treatment (S6) (6.90%) was almost non-existent, and the best in terms of the nodule percentage was The (S0) (3.67%), and for the average production unit, the treatment exceeded (S0) (490.82 g), the lowest was the treatment (S6) (92.46 g), and the best was for the oil percentage (S5) (27.25%). As for the Daebli variety, the treatment (S6) (28.75 cm) outperformed the average length of the parcel, and for the percentage of flower buds (S1) (45.32%), and the least was the treatment (S6) (3.49%), and for the nodule percentage it exceeded (S0) (2.76%). For the production unit, the treatment was better than the treatment (S0) (304.77g), and for the percentage of the best oil treatment (S8) (27.79%)
Al-Baath University Journal.
2021.
Students
Teachers
Graduates
Faculties
