Elkholy, M.M( 2014). Environmental impact of irrigation development J.Soil Sci. and Agric. Eng., Mansoura Univ., Vol. 5 (8): 1191-1205 , 2014
Abstract: This study aims to evaluate water quality of irrigation development project and its impact on the environment. To achieve this goal, represent tive samples of irrigation, ground and drainage water, cultivated plants were collected at the beginning and tail end of each mesqas of wasat, manaifa and mahmoudia.
The obtained results showed that, irrigation water is of a good quality, ground water is classified as high saline and moderately to highly saline and drainage water is classified as restricted for irrigation purposes. In case of pollutants of water resources, (i) macro, micronutrient and heavy metals are considered below the permissible limits in all sites, (ii) total and fecal coliform in irrigation and ground water samples of manaifa and mhmoudia are free except main drain (2) of manaifa, while at wassat, the three types water samples are contaminated at the head of mesqa, (iii) irrigation and ground water samples of the representive sites are free of salmonela and shigella except drainage water, (iv) COD, in all water samples are below permissible limits except main drain of wassat and manifa, while BOD are below the permissible limits With regard to soil, EC values reduced almost (26%) compared to the previous data collected. The extractable elements for locations under study still less than the maximum permitted metal loading. Concerning plant assessment, the sequence of micro nutrients for plant shoots and roots in the investigated sites followed the order of : Fe > Mn > Cu > B while total coliform was found in mahmoudia but still under the permissible limits.
Keywords: (irrigation , drainage water, trace elements , heavy metals . biological parameters. )
