Faten Bakor, (1), Anwar Almouemar(1) , and Zakaria Al Naser*(1)
(1)Plant protection Department, Faculty of Agriculture, Damascus University, Syria.
(*Corresponding author: Zikeria Al naser,:. E-Mail: zinzanasera@gmail.com )
Received: 29/08/2021 Accepted: 11/11/ 2021
Abstract:
This research has aimed to study the effect of repeated spraying of glyphosate on Solanum elaeagnifolium plants in uncultivated fields in three different locations in the Syrian governorates, Deir Ezzor (Al-Jufra area), Aleppo (Dayr Hafir), and Rural Damascus (Mseilha) during the period between 2018 and 2020. The results obtained that the repetition of the pesticide spray 3 and 6 times during the years of the study did not change the physical composition, salinity, pH and calcium carbonate in all study sites. Whereas, spraying glyphosate 3 and 6 times increased the percentage of organic matter and phosphorus available, with a significant difference with the control. The values of available phosphorous were (236 & 296 mg / kg ) Aleppo , (312& 363 mg / kg ) Deir Ezzor and (336 & 395 mg / kg) Rural Damascus in control and plot treated with 6 times of glyphosate, respectively. Also, repeated spraying with glyphosate in the treated soils led to increasing the average general population of bacteria and fungi. These indicators have increased with the increase in the number of times the pesticide was sprayed. The total count of bacteria after 6 times of spraying the pesticide was 18.12, 15.78, and 19.57X104 / g soil in Deir Ezzor, Aleppo, and Rural Damascus, respectively.
Keywords: Glyphosate, S. elaeagnifolium, microbial, Soil.
Full paper in Arabic: pdf