Mohamad Bishr Dababo(1)*, Mahmoud Baghdadi (1), Safaa Kelani(2), and Moustafa mazen atri (3)
(1).Department of Horticulture, Faculty of Agriculture, Aleppo University. Aleppo, Syria.
(2). Department of Renewable natural resources and environment, Faculty of Agriculture, Aleppo University. Aleppo, Syria.
(3). General commission for scientific agricultural research Aleppo, Aleppo, Syria.
(*Corresponding author: Eng. Mohamad Bisher Dababo E-mail: mr1d1mb1@gmail.com).
Received: 5/10/2020 Accepted: 19/10/2020
Abstract
The experiment was carried out at Al-Safirah district of Aleppo Governorate during the 2019/2020 season using foliar fertilization with chelated iron EDDHA at two concentrations (500, 750 ppm) and soil fertilization at the same concentrations in three dates (before leaf fall, before flowering, one month before Harvest), and control (without treatment) and it’s effect on some of physical, chemical and productivity characteristics of the pear trees Pyrus communis L var. Coscia.The experiment was designed according to the Randomized Complete Block Design with three trees per treatment and the results showed that soil fertilization with iron chelated Fe-EDDHA at a concentration of (750 ppm) significantly increased the tree productivity, fruit weight, size, the percentage of dry matter, total sugars, vitamin C content and reduced the total acidity of fruits, which were (30.33 Kg/tree, 164 g, 173. 9 cm3, 37.95%, 9.54%, 13.32 mg/100 g F.w. and 0.13%), respectively, compared with control (15.33 Kg/tree, 108.8 g, 103.1 cm3, 13.86%, 5.87%, 11.33 mg/100 g F.w. and 0.29%), respectively. Foliar fertilization with chelated iron Fe-EDDHA at a concentration of (500 ppm) also increased vitamin C content, fruits pH and reduced the total acidity of fruits (14.73 mg/100 g F.w., 4.79 and 0.13%) respectively.
Keywords: Chelated Iron, Fe-EDDHA, Pear, Coscia, Physical characteristics, chemical characteristics, productivity.
Full paper in Arabic: PDF