Ziad jalal Al-Hussein (1) and Marwa soleman Al-Shabib*(1)
(1). Department of Horticulture, Faculty of Agriculture, Deir Ezzor, Al-Furat University, Syria.
(*Corresponding author: Marwa Al-Shabib:E.mail: marwasosh@gmail.com, Mobile: 0951393221)
Received: 6/02/2023 Accepted: 17/05/2023
Abstract:
The research was carried out during the years (2020 and 2021) in the nursery of the College of Agriculture at Al-Furat University, to study the effect of foliar spraying with urea on pear (Pyrus communis L.) seedlings with three concentrations (5-10-15g/L), and cytokinin acid at a concentration of 100 mg / L and iron chelate at a concentration of 50 mg/L in improving the indicators of vegetative and root growth. The results showed that spraying with cytokinin acid or iron chelate alone or in combination with urea improved the vegetative and root growth indicators of the seedlings compared to the control. The results of the research showed that the treatment with cytokinin acid or iron chelate affected growth indicators. The treatment of spraying iron chelate gave the highest significant values of the length of the seedlings (79.10) cm, diameter (5.30 mm), the number of branches (8.5), the number of leaves (220) the leaf area (787 cm2), the content of leaves of chlorophyll (43.1 mg / g), the fresh vegetative weight (60.40 g) and dry (31.7 g) with significant differences compared with the control. The results also showed that spraying with cytokinin acid or iron chelate with urea increased the growth indicators by significant differences compared with the control. The treatment of spraying iron chelate and Urea at a concentration of 5g/L gave the highest values for the average number of leaves (206), leaf content of chlorophyll (37.7mg/g), and fresh shoot weight (53.89g) compared with the control. and it was also noted that the treatment with cytokinin acid and urea at a concentration of 10 g/L, it gave the highest averages for the length of the seedlings (75.28 cm), diameter (6.16 mm), leaf area (989 cm2), wet root weight (40.3 g) and dry root weight (19.9 g) compared to the control, while the treatment with cytokinin acid and urea at a concentration of 15g/L gave the highest averages for the number of branches (11.4) compared with the control.
Keywords: Foliar Spraying, growth indicators, Cytokinin, Iron Chelate, Pear Seedlings.
Full paper in Arabic: pdf