The book deals with biological control of Pythium aphanidermatum causing damping-off disease of mustard by Trichoderma species. Damping-off disease of mustard occurs worldwide resulting in great loss to this crop. Trichoderma species have been widely exploited for plant growth promotion as well as in biological control of plant pathogens. Chemical fungicides are the main commercially available option for control of the disease. However, fungicides no more remain as an option for plant disease control due to their poisonous nature. Therefore, biological control is an attractive alternative....