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    Agricultural utilization of sewage sludge and fly ash: single and interactive effects on soil and plant grown
    (Department of Environmental Science, 2015-12-31) Singh, Rajeev Pratap
    The present study clearly indicates that sewage sludge / fly ash and amendment of their mixture modified the characteristics of agricultural farm soil. Organic C, nitrogen, available P etc. increased in soil due to sewage sludge as well as fly ash amendments. The present report examines the levels of essential (Cu, Zn, Cr and Ni) and nonessential heavy metals (Cd and Pb) in sewage sludge, fly ash and in its mixtures. The report also examines the concentrations of heavy metals in different test plants grown at different rates of fly ash, sewage sludge and their mixtures.