Abstract
The recycling of the waste bed logs used in the Shiitake (Lentinula edodes (Berk.) Pegler) cultivation, as the resource of sawdust material for the sawdust-based cultivation of Shiitake, was examined. However the influences of the substitution of sawdust from waste bed logs to hardwood on the mycelial growth and the shapes of fruit bodies were not observed. The numbers of fruit bodies on the substrate substituted with sawdust of the waste bed logs are from 15 to 45% lager than those on the substrate using the sawdust from Mizunara (Quercus mongolica var. grosseserrata Rehd. et Wils.). The yield of fruit bodies of the former substrate was about 40% more than that on the latter sawdust substrate. Futhermore, the higher yield on fruit bodies of the former substrate was due to the higher yield of larger fruit bodies. These results suggest that the sawdust from the waste bed logs could be used as the resourse for the sawdust-based cultivation of L. edodes.
