Rodin Issa (1)*, Muhammad Kardoush (1) , Walid Mansour(2) and Yahya Kamary (3)
(1). Department of Horticulture, Faculty of Agricultural Engineering, University of Aleppo, Aleppo, Syria.
(2). Dept of Renewable natural resources and Environment, Faculty of Agricultural Engineering, University of Aleppo,
(3). General Commission for Scientific Agricultural Research, Syria.
(* Corresponding Author: Rodin Issa , E-mail: rodin.issa9881@gmail.com)
Received: 12/ 11 /2021 Accepted: 22/05 /2022
Abstract:
The research was conducted at the Agricultural Scientific Researches Center in Aleppo during 2020 growing season, to study the effect of water and salt stress in laurel implants in their first phase of age. Two levels of deficit irrigation were applied at 50 and 30% of the field capacity and three levels of salt concentrations 6, 8, 10 ds /m in addition to control treatment (100% of field capacity, 1 ds /m) were applied separately in two experiments, with randomized complete block design (RCBD). The results were taken after two months of applying the treatments, by measuring the longitudinal growth rate of the implants, the number of formed leaves and the leaf area. The results showed that the implants tolerate water stress up to 50% of the water amount which added at field capacity and salt concentrations (6, 8, 10 ds / m), as the longitudinal growth in them reached after two months (2.06, 2.23, 1.93, 1.8 cm) respectively, the number of leaves (3.66, 3, 1,1) respectively, and the leaf area (10.85, 11.59, 10.79, 10.59 cm2), respectively. The laurel implants did not tolerate water stress with 30% of the water amount which added at field capacity, as longitudinal growth stopped completely in the second month, no new leaves were formed in it with most of the old leaves withering, and the leaf area of the non-wilted leaves was 6.51 cm2. The control treatment significantly outperformed all treatments two months after the experiment start, with a growth strength of 3.48 cm, leaves number of 3.66 sheets, and leaf area of 12.62 cm2.
Keywords: water stress, salt stress, laurel implant, Laurus nobilis.
Full paper in Arabic: pdf