Abstract
Field test of aerial application of dipterex was made for flies and mosquitoes of sanitary importance in rural area of Takasago city, Japan. Three kilogram of 4 per cent concentrate of dipterex in dust per hectare were applicated by Bell 47 G helicopter. In the result, remarkable reduction was observed even in the dwelling species of Musca domestica vicina and Fannia canicularis. Temporary but remarkable reduction was observed on the adults of the mosquitoes of Culex and Anopheles, and also, on the larvae of the same genera in open breeding sites.
