Abstract
Techlofthalam [N-(2, 3-dichlorophenyl)-3, 4, 5, 6-tetrachlorophthalamic acid] was evaluated as a rice bacterial leaf blight control agent in the field. Techlofthalam was highly effective at the dosage of 4kg (a. i.) by soil application and of 60 to 120g by foliage application per hectare. Foliage application showed an excellent residual effect for suppressing lesion development and also effective against the disease on rice plants damaged by an artificial storm despite of poor effectiveness by a needle prick inoculation method in the greenhouse.