Damping-Off Suppressiveness of Vermicomposted-Bamboo Powder microorganisms (Elvira et al. 1998). The feedstocks that are commonly used for vermicomposting include animal manure and vegetable or fruit scraps from kitchens or farms (Atiyeh et al. 2000, Garg et al. 2006). Many kinds of vermicompost are known to be used as a component of nursery potting media (Scheuerell et al. 2005) owing to their ability to control plant pathogens such as Pythium ultimum Trow var. ultimum, Rhizoctonia solani Kuhn, and Verticillium sp. (Chaoui et al. 2002). Owing to their effective disease suppression, vermicomposts have become a promising alternative to chemical pesticides. However, vermicomposts produced from different feedstocks vary in disease suppressiveness. Szczech & Smolińska (2001), for example, showed that vermicomposts produced from