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This study was conducted to compare how the nutrients and organic matter content in household kitchen wastes and sewage sludge transform in 120-days vermicomposting experiment. The concentrations of nitrogen, phosphorous and potassium increased during the experiment. The dry matter content of the composts decreased and the value of pH in the case of kitchen wastes increased and for sewage sludge vermicompost it remained almost unchanged. The amounts of organic matter and nutrients decreased todoi:10.5539/jas.v6n2p114 fatcat:kd6ptcv2argdrm63lxplbothda