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1 December 2009 Samplers for Evaluation and Quantification of Ultra-Low Volume Space Sprays
M. Farooq, W. C. Hoffmann, T. W. Walker, V. L. Smith, C. A. Robinson, J. C. Dunford, I. W. Sutherland
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Abstract

A field study was conducted to explore the suitability of 5 pesticide deposition samplers for airborne spray and ground deposits from ultra-low-volume (ULV) space sprays. Samplers included horizontally stretched stationary cotton ribbons at 2 heights, rotating ribbon, rotating Teflon slides, and filter paper. Slides were also used for droplet-size analysis. A set of 7 samplers of each type was placed at 1, 7, 15, 25, 40, 65, and 90 m from the spray line along the spray swath. Water and BVA13 oil with fluorescent dyes as tracers were sprayed with the use of a truck-mounted ULV sprayer at dusk and dawn. Results suggest that the horizontal and rotating cotton ribbons are best for quantification of airborne spray and filter paper is best for ground deposition collection. The rotating slide samplers only detected the BVA13 oil-based sprays.

M. Farooq, W. C. Hoffmann, T. W. Walker, V. L. Smith, C. A. Robinson, J. C. Dunford, and I. W. Sutherland "Samplers for Evaluation and Quantification of Ultra-Low Volume Space Sprays," Journal of the American Mosquito Control Association 25(4), 521-524, (1 December 2009). https://doi.org/10.2987/09-0009R.1
Published: 1 December 2009
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KEYWORDS
Deposition
samplers
spray flux
sprayer evaluation
Ultra-low-volume (ULV) sprays
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