1. Efficiency of some amendments added to clayey soil irrigated with drainage water;Abou El-Defan;J. Agric. Sci., Mansoura Univ.,2005
2. Chemical pollution of soils, waters and plants at the industrial area of Helwan City in Egypt;Abou El-Naga;Egypt J. Soil Sci.,1999
3. Ahmed Shaimaa, H.A., 2008. Studies on the behaviour of some heavy elements in salt-affected soils irrigated with low quality water. MSc thesis, Fac. Agric., Ain Shams Univ., Cairo, Egypt, pp. 29–75.
4. Handbook of Plant Nutrition;Barker,2007
5. Manure and peat based iron-organo complexes. I: Characterization and enrichment;Barness;Plant Soil,1991