Effect of spraying GA3 with different concentrations on productivity and some fruit physical properties of Barhee date palm fruits

The experiment was conducted to investigate the effects of foliar application of gibberellic acid on productivity and fruit quality in ‘Barhee’ date palm was carried out during the 2023 and 2024 seasons in at El-Mansoria district (Egypt - Alexandria Desert Road), El-Giza Governorate, Egypt. GA3 (5, 10, 15, 20, 25 ppm) was applied to the Date palms and Fruit under control were sprayed with tap water only. Investigate were recorded on fruit properties (productivity and some fruit physical properties) like Fruit retention (%), Bunch weight (kg), Yield/palm (kg), Fruit weight (kg); Seed (%) and Flesh (%), Fruit length (cm), Fruit diameter (cm), Fruit shape index, Firmness (g/cm2), Moisture (%), Marketable fruits, Unmarketable fruits. Results indicated that GA3 (10 ppm) spray favorably influenced productivity and fruit quality of ‘Barhee’ date palm over control during both seasons. Similarly, the fruit set was increased. Although individual fruit weight was reduced slightly, while fruit number as well as marketable yield was increased tremendously over control with no adverse effect on fruit quality characteristics. In all, spraying GA3 during both seasons was much more effective in achieving the desirable results.