From time to time. it has been suggested that microbial insecticides might be combined with chemical pesticides used in agriculture and forestry. Jaques (1985) suggested that the compatibility of insect viruses with pesticide chemicals especially fungicides and insecticides is important because viruses may have to be mixed with other chemicals during practical use in the field to avoid duplication of application operation. Relationships of viruses and pesticides have been reviewed by Benz (1971) and Jaques and Morris (1981).In the present study, the compatibility of S. litura NPV with mancozeb, copper oxychloride and carbendazim was studied with a view to imd out if NPV and fungicides could be applied together to manage both S. litura and foliar diseases.