Six wettable powder insecticides, acephate, bendiocarb, carbaryl, isoprocarb, DDT and BHC and one flowable insecticide, carbofuran (F) were tested under greenhouse as well as under field conditions in order to know their efficacy in reducing rice tungro disease incidence. Acephate, bendiocarb, carbaryl, isoprocarb and carbofuran (F) not only prevented tungro infection in artificial inoculation tests in the rice cultivar Taichung Native 1, but also efficiently managed the disease incidence under field conditions in two rice cultivars Taichung Native 1 (susceptible) and Ratna (tolerant). They reduced the rate of tungro infection in both cultivars as compared to control. The vector population was remarkably reduced by these insecticides compared to DDT, BHC and control. The plant height, panicle number, grain yields and dry straw weight were significantly superior in the plots treated with acephate, bendiocarb, carbaryl, isoprocarb and carbofuran (F) in comparison to control. There was a strong negative correlation between the tungro infection and height, panicle numbers, grain yield and dry straw weight and a positive correlation between vector population and the rate of tungro infection.