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1 September 2014 SR450 And Superhawk XP Applications Of Bacillus thuringiensis israelensis Against Culex quinquefasciatus
James C. Dunford, Craig A. Stoops, Alden S. Estep, Seth C. Britch, Alec G. Richardson, Todd W. Walker, Muhammad Farooq, David F. Hoel, Raymond R. Platt, Vincent L. Smith, Robert A. Wirtz, Jerry D. Kerce
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Abstract

Sprayer comparisons and larval morality assays were conducted following SR450 backpack mist blower and Superhawk XP thermal fogger applications of Vectobac® WDG Bacillus thuringiensis israelensis (Bti) against Culex quinquefasciatus. Bacillus thuringiensis israelensis was applied at maximum label rate in a 232.26-m2 field plot located in north-central Florida with containers placed at 2 heights (ground level and 1.52 m above ground) on stakes positioned 3.04, 6.09, 9.14, 12.19, and 15.24 m from the spray line. Results indicated that there was no significant (P > 0.05) difference in 24- and 48-h larval mortality between the 2 sprayers or between the 2 heights. There was significant difference (P < 0.05) among the 5 rows, with mortality continuously decreasing with increasing distance from sprayer. Both sprayers provided on average >70% larval mortality 3.04–9.14 m from the spray line, and <60% mortality at 12.19 and 15.24 m. The data suggest that the SR450 and Superhawk XP may be comparable sprayers for use with Bti to control mosquito larvae.

2014 by The American Mosquito Control Association, Inc.
James C. Dunford, Craig A. Stoops, Alden S. Estep, Seth C. Britch, Alec G. Richardson, Todd W. Walker, Muhammad Farooq, David F. Hoel, Raymond R. Platt, Vincent L. Smith, Robert A. Wirtz, and Jerry D. Kerce "SR450 And Superhawk XP Applications Of Bacillus thuringiensis israelensis Against Culex quinquefasciatus," Journal of the American Mosquito Control Association 30(3), 191-198, (1 September 2014). https://doi.org/10.2987/14-6400R.1
Published: 1 September 2014
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KEYWORDS
backpack sprayer
container-inhabiting
larval control
thermal fogger
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