The vermicomposting for agricultural valorization of sludge from Algerian wastewater treatment plant: impact on growth of snap bean .

In the present study, vermicomposting of sewage sludges and their application in agriculture have been investigated. The impact of earthworms on the stabilization of these sludges during 7, 14 and 21 days was assessed. The final product was applied as soil amendment (set-1) to evaluate the effects on vegetative parameters (Chlorophyll, carotenoid, number of nodules, leaf weight, and plant height) of bean.