The present paper deals with the experimental results on the effects of several fungicides on the mycelial growth of Shizophyllum commune, and on the inactivation of the fungicides caused by making contact with components of Cryptomeria woods.
Mycelial growth of the fungus was checked on the culture media containing these fungi cides. Antifungal activity of these fungicides dropped down when the fungicides had been made contact with powder made from sap wood of Cryptomeria trees. One of the reasons of dropping of the fungicidal activity in practical application is probably due to the inactivations of the fungicidal activity caused by making contact with components of treated woods.