Abstract
The bed-logs for Shiitake (Lentinula edodes) cultivation were inoculated with Graphostroma platystoma pre-cultured on sawdust medium or wooden plugs in order to evaluate the propagation efficiency of the time, amount and site of inoculation of the latter microorganism. The efficiency was estimated by the stroma rate of G. platystoma (a ratio of the areas with stromata to the total surface area of the bedlogs). When bed-logs were inoculated in early spring, a higher stroma rate was scored. Stroma rate was increased in proportion to the increase in variable by which each diameter (cm) of bed-logs was multiplied for calculating the necessary number of the wooden plug inocula. No harmful effect by the pathogenic fungus was observed when G. platystoma was inoculated at both cut ends of bed-logs.
