تأثير إضافة خام الزيوليت وحمأة الصرف الصحي في تراكيز المعادن الثقيلة في
The research was conducted in Agricultural Scientific Research Center at Al Hanadi Station in Lattakia Governorate on calcareous sandy clay soil in order to find out the effect of adding two levels of zeolite one rate of sewage sludge and a mixture of zeolite with two different rates with a single rate of sewage sludge on nutrients elements and heavy metals concentrations of Soil and potato