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United States Department of Agriculture

Agricultural Research Service

Title: Off-Site Movement of Mosquito Control Chemicals in Minnesota

item Koskinen, William
item Manweiler, S - MMCD

Submitted to: Agronomy Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: October 31, 1999
Publication Date: N/A

Technical Abstract: The objective of the study was to determine the offsite movement of a mosquito adulticide, resmethrin, applied by the Metropolitan Mosquito Control District (MMCD) of Minnesota. To detect drift of resmethrin, petri-plates were placed at 22.9, 45.7, 68.6, and 91.4 m distances on lines perpendicular to each side of the ultra-low volume sprayer. Results show an nuniform distribution of pesticide to the 91.4 meter mark on each side of the application path. The average amount of resmethrin deposited per unit area was 17 ng cm**-2. There was no significant difference in distribution of the resmethrin when applied with winds blowing at 3.23 km h**-1 and 9.66 km h**-1, while the temperature and relative humidity remained relatively constant. The results showed that the buffer zones currently set by MMCD cannot be decreased, but more research is needed since preliminary results showed that resmethrin drift decreased in higher humidity.

Last Modified: 5/5/2015