Effect Of Agricultural Amendments On Lead And Cadmium Content Contaminated Soils

ABSTRACT

 This research work which investigated the immobilization of heavy metals in contaminated soil by agricultural amendments was carried out in Micheal Okpara university of Agriculture, Umudike Umuahia Abia State. Soil samples were collected from both contaminated soil (Mechanic Village Soil) and normal soils. These samples were treated with two levels (log and 20g) of each of the amendments —rice husk, poultry manure and green compost manure and were left to incubate for ten (10) weeks. The samples were analysed prior to incubation and at the end of incubation period for physicochemical property and heavy metal content. The results obtained showed that soil amendment had no effect on texture but significantly affected other soil properties like pH. Available P and organic cabon. While log of green compost reduced (immobilized) significantly the level of lead in contaminated soil, 20g of rice husk reduced (immobilized) significantly the concentration of cadunium.