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Evaluation of Suitability of Drainage Water of Al-Hussainia sector (Kut-Iraq) For Irrigation | ||
| Wasit Journal of Engineering Sciences | ||
| Article 1, Volume 2, Issue 1, 2014, Pages 30-45 | ||
| Authors | ||
| Omran I. Mohammad; Laheab abas jassim | ||
| Abstract | ||
| Al-Hussainia sector is the middle sector of Al-Dalmaj irrigation project. In this study, a specified area of Al-Hussainia sector has been selected to be evaluated for its water suitability for irrigation. For Al-Hussainia main drain, the evaluation includes four stages as follows: 1- Chemical evaluation of drainage water, 2-Analysis of drainage water by Aq.Qa software, 3- Leaching requirements computations, 4- Evaluation of the drainage water quality in the specified area of the project using the Geographic Information System (GIS) software. For the chemical evaluation, the most important indicators for the salinity problem considered are (Electrical Conductivity, Total Dissolved Solids, Sodium Adsorption Ratio and Sodium Content). The test results showed that there are no harmful effects from Sodium indicators on crops production while there is a salinity problem. The residual sodium carbonate values were zero for all locations. The analysis of the hydro chemical results by Aq.Qa program shows that the internal consistency of the samples was acceptable. It is concluded that the drainage water of Al-Hussainia sector can be used directly to irrigate wheat and barley without reducing the yield with leaching requirement of 0.25 for wheat for all locations while barley needs a leaching requirement of 0.15 for locations 3,4, and 5 a leaching requirement of 0.17 should be provided for locations 1, 2, and 6. For corn crop, the drainage water is unsuitable for irrigation unless it is mixed with irrigation water to eliminate the salinity hazard. However the mixing ratio is0.5 (1:1) for all locations except location 2 where the mixing ratio needed is0.6 (1:2). The three dimensional spatial analysis using the GIS software (Arc Map V. 9.3) showed that the final model of the study area is of permissible irrigation water quality. | ||
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