Efficacy of various ground-applied pyrethroids against adult Anopheles quadrimaculatus in the rice growing region of Arkansas.

Ground-applied ULV, cold aerosol, insecticide sprays were evaluated against caged adult female Anopheles quadrimaculatus. Treatments included 2 rates each of resmethrin, permethrin and a water-based permethrin formulation. Mortality at 24 h posttreatment was not significantly (P greater than or equal to 0.05) different between the resmethrin and water-based permethrin treatments. Both rates of permethrin were significantly (P less than 0.05) less effective than the other treatments.

Efficacy of various ground-applied cold aerosol adulticides against Anopheles quadrimaculatus.

Ground-applied ULV, cold aerosol insecticides were tested against adult female Anopheles quadrimaculatus. Treatments included high (H) and low (L) rates of Permanone (permethrin), bioresmethrin and esbiothrin. Malathion was applied as a standard. Mortality at 24-h posttreatment was highest with Bioresmethrin H at 15 m. Permanone H exhibited good control out to 60 m (88.9%), but dropped to an unacceptable level (65.5%) at 90 m. The low rates of all compounds produced unsatisfactory results at 24-h posttreatment. Recovery from knockdown occurred in all treatments with the exception of malathion.