Survey and characterization of water resources and soils around Wadi Rehana region in the western desert of Iraq

The research was conducted in Wadi Rehana area within the Upper Euphrates region in the Iraqi Western Desert. A number of samples of groundwater wells were collected randomly on a seasonal basis and were chemically analysed to obtain concentrations of some important elements to determine the quality of water resources. The results showed that various wells with the water quality within the classes C۵S۱ and C۶S۱, are considered very salty and unsuitable for irrigation operations and rarely used for some types of crops. The results showed that all five soil pedon had SL and Sil textures, and they are within the medium texture soil of the surface layers. The EC values ​​ranged from ۱۱.۵ dS m-۱ to ۰.۹۴ dS m-۱. The digital average of the acidity function in the soil ranged from ۷.۷ to ۷. The CaCO۳ values ​​ranged between ۲۳.۳ and ۶۴.۸%, while CaSO۴ between ۰.۴ and ۴۷.۹%. Furthermore, organic carbon was between ۰.۱۰ and ۰.۶%, SAR values ​​ranged from ۰.۲۷ to ۶.۱, CEC across soil sections from ۱۸.۴ to ۳۲.۳%, and the total nitrogen ratio for the surface layer from ۵۳۳ to ۹۲۰۷ ppm. Phosphorus ranged from ۲.۰ to ۷.۴ ppm, while potassium from ۹.۲ to ۲۸.۷ ppm.

کلیدواژه ها:

Irrigation water ، Physical and chemical characteristics ، Land evaluation ، Agricultural development