Activities of dehydrogenase, urease, acid and alkaline phosphatases during vermicomposting elevated initially and then declined, indicating vermicompost maturity. The total microbial population was significantly higher in CD þ TEP/GLS vermicomposts (P < 0.001). C/N and C/P of final vermicompost ranged from 13.45 to 22.33 and 15.54 to 28.56 espectively.
Results revealed that electrical conductivity, total Kjeldahl nitrogen, total phosphorus, total potassium and NeNO3 - levels were higher in vermicomposts generated from PMS þ CD with TEP/GLS combination than in composts prepared without earthworms while total organic carbon, C/N ratio, C/P ratio and organic matter content depicted significant reduction. Vermicomposting of paper mill sludge (PMS) with cowdung (CD) and green manure plants, Tephrosia purpurea (TEP) and Gliricidia sepium (GLS) in different combinations (21 days pre-decomposed) was carried out using Eisenia fetida (60 days).
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