Abstract
Trichoderma viride (Trichoderma lignorum) is found to be a beneficial fungus parasitizing the sclerotia and mycelia of sclerotial fungi and often doing to death. The fungus is, on the other hand, a weak parasite to sweet potatoes and also a harmful one to depress the growth of various crops, but the detrimental effect is rather greater on pathogenic fungi than on crops. It seems to be quite hopeful to use Trichoderma as an agent for controlling biologically sclerotial diseases and other fungous ones.
