Incidence of sheath blight disease of rice was reduced in plots receiving Glyricidia leaves, rice husk or lime (main treatment) as well as Trichoderma viride (subtreatment). Interactions between Glyricidia leaves and T. viride/Carbendazim and rice husk/lime with carbendazim were significant. Maximum stimulation of saprophytes and suppression of pathogen were observed in plots amended with Glyricidia leaves or rice husk.