Effect of addition of zeolite ore and sewage sludge on heavy metals concentrations of soil and potatoes

Abstract

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 crop.Experiments were carried out according to the design of the complete random Block, three replicates, and significant differences at level (0.05).The Soil analyzing results showed that the values ​​of heavy elements in all treatments were very below compare with the concentrations allowed for the heavy metals in accumulation agricultural soils. Adding zeolite at the first level alone or mixed with sewage sludge made leaves and potato tubers have properly nutrieted with regard major and micro nutrients. The results also showed that the values ​​of heavy elements in potato leaves, tubers and for all treatments did not exceed the recommended concentration values of these elements in the plant.