Reutilization of Waste Nameko (Pholiota microspora) Mushroom Substrate for Oak (Quercus serrata) Sawdust Nameko Cultivation

Abstract

Two cultivation trials were conducted to evaluate the feasibility of using waste beds of nameko mushrooms as a replacement for oak (Quercus serrata) sawdust in nameko mushroom bed cultivation. In the first trial, the control group used 100％ oak sawdust as the substrate (0％ replacement), while the experimental groups replaced 10, 20, 30, 50, 70, and 100％ of the sawdust with waste beds. In the second trial, as in the first, the 0％ replacement served as the control, and the experimental groups used the same substrate formulations as in the first trial, with calcium carbonate added at a dry weight of 2.03 g per cultivation bottle. The results showed that in the first trial, yield increased by approximately 25-50％, and in the second trial, by about 40-50％, compared with the 0％ replacement control. In both trials, the cultivation period was shortened by approximately one day. These findings suggest that waste nameko beds are more suitable than oak sawdust as a cultivation substrate and can be effectively used as a replacement material.