Environmental and Potential Health Effects of Growing Leafy Vegetables on Soil Irrigated Using Sewage Sludge and Effluent: A Case of Zn and Cu
作者： N. K. Tandi , J. Nyamangara , C. Bangira
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摘要: Abstract The use of sewage sludge and effluent as a source nutrients water for crop production is increasing worldwide. A study was conducted in 2001 at Pension farm (near Harare) to determine the effect long term (>30 yrs) application on Zn Cu accumulation top soil, uptake these metals by lettuce (Lactuca sativa L.) mustard rape (Brassica juncea L.), dry matter yield. Application sludge/effluent significantly (p < 0.001) increased total (13.7–1563.9 mg kg−1) (2.5–133.3 mg kg−1) soil (0–20 cm depth) compared control. Sewage addition both test crops, while significant first second rape. Based dietary patterns poor urban households Zimbabwe, maximum possible intake will only constitute 40% Maximum Daily Intake (MDI). toxicological implications how...
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