Rabe’a ALhayek *(1), Ihab Jnad (1), Muhammad Manhal Al-Zuobi (2)
(1). Department of Rural Engineering, Agricultural Faculty, Damascus University, Syria.
(2). General Commission for Scientific Agricultural Research (GCSAR), Damascus, Syria.
(*Corresponding author: Rabe’a ALhayek, E. mail: rabearose1976@gmail.com.)
Received:8/05/2022 Accepted: 4/09/2022
Abstract:
The research was conducted at Salamiah Scientific Agricultural Research Center in the 2016/2017 and 2017/2018 seasons to study the effect of green manure with Sesbania on soil properties as a phytoremediator plant when using treated wastewater to irrigate barley crop (Furat 6 variety), and its effect on reducing the accumulation of heavy metals in it. The experiment included two types of treatments: first one was the type of water quality (fresh water F and treated wastewater T) and the second one was the fertilization treatment: green manure with Sesbania (G), and mineral manure (NG) according to Randomized complete block design (RCBD). The results concluded that green manure significantly increased mineral nitrogen content in the soil by 22.5% compared with mineral fertilization, and contributed with treated wastewater use to reduce the accumulation of heavy metals in the soil, the concentration of lead was 11.92 mg.kg-1, chromium 14.46 mg.kg-1 and cadmium 0.379 mg.kg-1; Compared with 12.46 mg.kg-1, 15.98 mg.kg-1, 0.531 mg.kg-1 when using treated water and mineral fertilization, all concentrations were much less than the maximum permissible limits in the soil. Therefore, it can cultivate Sesbania as phytoemediator plant when using treated wastewater in irrigation, and need to monitor it periodically to prevent soil contamination when used for long time.
Key Words: Green Manure, Treated Wastewater, Mineral Nitrogen, Heavy Metals, Sesbania.
Full paper in Arabic: pdf