Heba kadi *(1), Mahmoud Baghdadi (1), and Zakaria Hassani (1)
(1). Horticulture Department, Faculty of Agricultural Engineering, University of Aleppo, Aleppo, Syria.
(*Corresponding author: Heba kadi, E-Mail: hebakadi92@gmail.com).
Received: 3/08/ 2021 Acceptance: 4/11/ 2021
Abstract:
The effect of foliar spraying studied organic calcium at concentrations (2 and 4 ml/l) and ascorbic acid at concentrations of (400, 600 ppm) and their mixtures on some physical and quality characteristics and the yield of (Coscia) pears fruits during the 2020 season, in Al-Sefira district of Aleppo Governorate, where the spraying was carried out in the stage of completion of growth, while the control was left without treatment. The results showed that fertilization with organic calcium and ascorbic acid with different treatments and concentrations improved the quality of fruits and significant differences compared to the control, as the treatment of calcium 4ml/l+ascorbic acid 400 ppm significantly increased the productivity of the tree, the weight of the fruit, the length and size of the fruit. They were (46.24 kg / tree, 119.35 g, 8.5 cm, 121 cm3) respectively Compared with the control (35.30 kg / tree, 82.92 g, 7.53 cm, 84 cm3) respectively. It also improved the chemical properties of the fruits by increasing the percentage of total solids (TSS),pH and vitamin C, and reducing the acidity compared to the control.
Keywords: pre- harvesting , organic calcium, ascorbic acid, pears, fruit quality.
Full paper in Arabic: pdf