Co-composting with cow dung and subsequent vermicomposting improve compost quality of spent mushroom.

In order to determine a feasible degrading process for spent mushroom (SMS) with high lignin content, the present work used cow dung (CD), SMS, and a mixture of CD and SMS as substrates and evaluated the effects of vermicomposting on the microflora and the quality of composting products. Bacterial (R = 0.548, P = 0.