Composting versus vermicomposting: A comparative study of organic matter evolution through straight and combined processes

► Tomato waste composting, vermicomposting and the combined process were studied. ► Changes in physical and chemical properties of waste differed among processes. ► Compost had higher nutrient content than vermicomposts. ► Physically vermicomposts and peat are more alike than compost and peat. ► Vermicomposts seem more suitable than compost as growing media constituents.