ASSESSMENT OF IRRIGATIONAL QUALITY OF SURFACE WATERS IN EL TARF AREA, ALGERIA

Abstract

During two seasons (winter and summer), the sampling of surface waters of nine stations along wadi Bounamoussa located in El Tarf which has an agricultural vacation (the extreme Northeast Algerian), is analyzed in order to evaluate preliminarily the pollution of surface water, the study methodology carried out in order to check the current state of water chemistry, its evolution over time and in space depending on the variation of the physicochemical parameters of water. The results of the physicochemical analyses of the waters samples shows that are very poor in soluble and moderately mineralized and accentuated, which can reduce the yield of sensitive plants and cause slow salinization of the soil hence the need for this research. We got the same order of abundance decreasing for both seasons as follows: Na+ > Ca+2 > Mg+2 > K+ and Cl- > SO4-2 > NO3- > NO2- and show that it is appropriate to irrigation and agriculture.