Against caged field-collected adults of Anopheles quadrimaculatus, optimized aerial applications of ANVIL 10 10®at 18.4 ml (1.63 g active ingredient)/0.4 ha produced a mean mortality of 92% at 1, 12, and 24 h after treatment. These trials were conducted with 7 stacked passes applied 1,067 m upwind of the target site when wind velocity was 18–21 km/h at an application altitude of 46 m and 5–10 km/h at ground level. When the wind velocity aloft was greater than might be operationally acceptable (27 km/h), reduced efficacy (64% mortality) was observed in the bioassay site (1,524 m downwind from 11 stacked passes) in an unreplicated application. Droplets from the 2 tail-mounted Beecomist 360-A-12-V rotary atomizers (fitted with wire sleeve cages of size 40 mesh) collected on spinning Teflon®-coated slides in the target area averaged a volume mean diameter (VMD) of 29 μm and a droplet density of 39 droplets/cm2 in 18- to 21-km/h winds. With 27-km/h winds aloft and a greater application offset, the VMD and droplet density dropped to 23 μm and 18 droplets/cm2, respectively. Coupled with unreplicated results from a nonoptimized application, these tests provide further documentation of the efficacy of ANVIL 10 10 for wide-area adult mosquito control and for optimization technology.
How to translate text using browser tools
1 September 2005
AERIAL ULTRA-LOW–VOLUME ASSESSMENT OF ANVIL 10 10® AGAINST ANOPHELES QUADRIMACULATUS
Max V. Meisch,
David A. Dame,
James R. Brown
ACCESS THE FULL ARTICLE
It is not available for individual sale.
This article is only available to subscribers.
It is not available for individual sale.
It is not available for individual sale.
aerial application
Anopheles quadrimaculatus
ANVIL 10 10®
Arkansas
optimization
ultra-low volume