CONTENT FROM HEAVY METALS CONDITIONS OF SANDY SOIL ON ITS IMPROVE THE PRODUCTIVITY EFFECT OF USING SOLID WASTES TO

Abstract

A field trial was conducted in sandy soil and treated with farmyard manure (FYM), raw sewage sludge (RSS) and municipal solid waste (MSW) and applied at application rates: I 0, 20 and 40 m3 I fed, to study the effect of using these wastes on some soil properties and productivity and also on its content from heavy metal (Zn, Cu, Fe, Mn, Cd, Pb and Ni). The results showed that heavy metals content of these wastes are lower than the average permissible average levels. The used soil had a low fertility and the heavy metals content were relatively low, but lower than the toxic levels. The application of organic solid wastes increased the organic matter content in the used soil and the RSS and MSW led to increase soil O.M content than did FYM, while a soil pH values decreased with increasing the application rates of wastes and observed in the plots treated with RSS and FYM than MSW. Soil available content ofN, P and K increased with increasing the application rates of these wastes and the highest values were observed in the treated plots with RSS at high application rates compared with treated plots with FYM and MSW.