In this study, the effect of different substrates of agricultural by-products on the mycelial growth rate and density of Trametes versicolor (Turkeytail mushroom) was analyzed. We found that pepper stem and rice bran with a mixing ratio of 9:1(v/v) produced the best mycelial growth of 101 mm in 10 days, while a mixing ratio of 8:2 resulted in mycelial growth of 83 mm in 10 days. The control group treated with a 9:1 mixing ratio of oak sawdust and rice bran (v/v) produced mycelial growth of 74 mm in 10 days. The following results are in the order of beanstalk, sesame stem, and perilla stem. After the harvest of the mushrooms, the mycelial growth rate and the density of T. versicolor in each substrate were as follows the group with waste substrate of Pleurotus eryngii and rice bran with a mixing ratio of 9:1(v/v) produced the best result of 76 mm in days, while a mixing ratio of 8:2 produced of 61 mm in 10 days. The control group with a 9:1 ratio of oak sawdust and rice bran produced mycelia of 74 mm in 10 days, while a mixing ratio of 8:2 resulted in mycelia of 59 mm in10 days.

In the experiment of the mycelial growth rate and density of Trametes versicolor, using some substrates of agricultural by-products, the one with pepper stem and rice bran in a mixing ratio of 9:1(v/v) produced a best result of 101mm/10days, 83mm/10days in the one with 8:2 mixing ratio, compared to the control group with 9:1 mixing ratio of oak sawdust and rice bran(v/v), showing 74mm/10days. And the following results are shown in the order of bean stalk, sesame stem, and perilla stem. After the harvest of the mushrooms, the mycelial growth rate and its density of T. versicolor in each substrate were as in the following; the group with a waste substrate of Pleurotus. eryngii and rice bran in a mixing ratio of 9:1(v/v) produced a best result of 76 mm/days, the 8:2 ratio one with 61mm/10days, compared to the control group with 9:1 ratio of oak sawdust and rice bran, showing 74mm/10days, 59mm/10 days in the one with 8:2 ratio of the same substance.