الفهرس 
AcknowledgementOnly 14 pages are availabe for public view
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Abstract
Agricultural use of sewage sludge has been increased as a mean of disposal and beneficial reuse . However, elevated concentrations of heavy metals on land receiving sludge are of public concern . The amount of metals taken up by the plants depends on the soil content of the metal , but is strongly influenced by other factors such as plant species , soil parameters (pH in particular), and the kind of metal itself. The aim of this study is to investigate the effect of lime in reducing heavy metals uptake (zinc, cadmium, copper, nickel ) by soybean and corn grown in sludge-treated soils (clay and sandy soils ) . The study of the residual effect of lime and sludge on heavy metals uptake by fababean grown in rotation with soybean and corn was maintained without repeating application of sludge and lime. The sludge used in this study was the composted sewage sludge which was brought from the site 9N (AGOSD) at Borg El-Arab . The study was conducted as two consecutive experiments . Each experiment was carried out in the two types of soil . The clay soil was packed in 48 pots and the same was applied for sandy soil. One week before the cultivation , soils were mixed thoroughly with lime and sludge .