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Plant-soil interactions of sludge-borne heavy metals and the effect on maize (Zea mays L.) seedling growth
The use of sewage sludge as an organic fertilizer under South African conditions is a popular disposal route. However, the lack of research performed under South African conditions and the conservative nature of the heavy metal guidelines when interpreted as total metal content is limiting the agricultural use of sludge. As part of a greater project, a glasshouse experiment was performed to characterize soil-plant interactions of the main sludge-borne heavy metals (Pb, Cd, Zn and Cu) in 2doi:10.4314/wsa.v27i1.5013 fatcat:mnawx6twwfcxnjr7hvixjdwapm