Tahani Kousa(1)* , Rashid Kharbotl1(1) and Abd el-Aziz Boessa(2)
(1). Department of Horticulture, Faculty of Agriculture, Tishreen University.
(2). Department of Soil Science, Faculty of Agriculture, Tishreen University, Lattakia.
(*Corresponding author: Tahani Kousa.E-Mail:tahanikousa@gmail.com).
Received: 27/07/2024 Accepted:24/10/2024
Abstract:
This study was carried out in the village of Kassab in Lattakia Governorate on the apple trees of the (Golden delicious) variety during the two growing seasons (2021-2022) to find out the effect of foliar spraying with some nutrients on some physical and chemical specifications of apple fruits of the Golden delicious, the experiment included nine treatments, where spraying with boron, potassium and seaweed extract was carried out individually or in combination with each other, The spraying process with these materials led to a significant superiority of the studied transactions compared to the control, where the average weight of the fruit increased and gave (180.00) g in the treatment (B+K) While in the witness it was (150.50) g, as for the size of the fruits, the highest volume was recorded in (B+K) (180.83) cm3 and the lowest value in the witness (146.67) cm3. Foliar spraying with these substances also led to an increase in the percentage of total sugars, the highest value was in (B+K+SW) (15.67)%, while the control (13.30)% was also observed, and a decrease in acidity was also observed in (B+K+SW) (0.42)% compared to the control (0.66)%. An increase in the productivity of trees was also observed, where the highest value was recorded in the treatment of (K+B+SW), which is (3926.80) kg/dunum, and the lowest was in the treatment of the witness (2750.00) kg/dunum.
Keywords: : apples, golden delicious, foliar spraying, potassium, boron, seaweedextracts.
Full paper in Arabic: pdf