ATOMIZATION MODELS FOR AERIAL APPLICATION OF PESTICIDES
By
Andrew J. Hewitt, Nicholas Woods, and Gary Dorr
Contact:
Dr.
Summary: Wind
tunnel studies have been conducted spraying active ingredient pesticides through
various nozzles and atomizers. A
rotating boom, where effective nozzle angle can be changed “on the fly” to
adjust droplet size as flight speed and pitch change, or as application
requirements favor changes in droplet size, was also used. The emission droplet size spectra were
measured using the same instrument and wind tunnel used to generate the Spray
Drift Task Force data contained in the AgDRIFT model. This paper will present atomization data for
real tank mixes and spraying systems that will allow optimization of aerial
application parameters for obtaining required droplet size spectra in the
field. The models can be used in
conjunction with aerial application decision-making and/ or as input to AgDRIFT
spray drift exposure assessments.
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Note: A copy of the manuscript for this paper is not available at this time. Please email the author to receive a copy. a.hewitt@uq.edu.au