Abstract
This work deals with the physicochemical quality of water irrigation of agricultural land in the palm grove of Bordj ben Azouz. The aim is to evaluate their ability to irrigate palm groves and their effects on soil change under irrigation in the presence and / or absence of drainage. A hydro geochemical assessment of the groundwater, as well as drainage and. soil samples from irrigated and non-irrigated are performed. The electrical conductivity associated with the geochemical facies and SAR (Sodium adsorption Ratio) reflect a global salinity of the water irrigation, the drainage waters follow the same general trend as that the waters of the wells, the soils show a significant difference of the salinity between the irrigated / drained ones and the others not. The geochemical simulation was carried out using a thermodynamic model of the software Phreeqc Interactive 3.1.4-8929 indicates the supersaturation of the water with respect to the carbonate minerals and the under saturation for the evaporites where the gypsum is close to saturation even exceeds it so that it can precipitate itself by forming the gypso-limestone crust (Debdeb). To protect the environment from saline pollution, a sustainable water and salinity management plan must be installed as well as possible and continuous monitoring of the drainage system are required to remove salt water from irrigated soil.
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