title: Aerial applications of ultra-low-volume insecticides to control the vector of Japanese encephalitis in Korea.
abstract: As a suitable emergency measure to arrest epidemics of Japanese encephalitis in Korea, the ultra-low-volume method of spraying insecticide to control the mosquito vector Culex tritaeniorhynchus has been tested in 2 successive years over a 16-km (2) area, utilizing a large fixed-wing aircraft. Malathion concentrate applied at 0.36 litres/ha gave insufficient control of the parous (infective) females, and no reduction in total numbers of this species. Fenitrothion concentrate applied at 0.45 litres/ha resulted in a 77-87% reduction in total numbers and an 87-98% reduction in parous females over a 4-day period.
mesh_terms: D000401:Aircraft; D000818:Animals; D003465:Culex; D004672:Encephalitis, Japanese / Q000517:prevention & control*; D005278:Fenitrothion / Q000008:administration & dosage*; D006801:Humans; D007303:Insect Vectors; D007723:Korea; D008294:Malathion / Q000008:administration & dosage*; D008722:Methods; D009032:Mosquito Control
chemical_list: D008294:Malathion; D005278:Fenitrothion