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The threat of spreading diseases is a serious concern when organic wastes are applied to farmland. Irradiation and composting are effective methods to reduce pathogens. Field experiments were conducted to assess the influence of these pathogen-eliminating methods on plant availability of Zn in the wastes. Four organic wastes: digested and dewatered (DSS), irradiated (DISS), composted (DICSS) sewage...
Organic wastes such as sewage sludges contain copper (Cu). Increased attention to environmental protection requires that wastes be treated with pathogen-eliminating procedures before application to farmland. It is not clear, however, if such procedures affect the plant availability of Cu in the wastes. This 2-year field research investigated the effect of irradiation and composting on Cu availability...
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