SYMPOSIA PAPER Published: 24 February 2018
STP160220160134

The Impact of Spray Adjuvants on Solution Physical Properties and Spray Droplet Size

Source

Over the past several years, numerous anecdotes from aerial applicators have surfaced concerning observations of increased numbers of fine droplets seen in the applied spray clouds, often associated with tank mixtures that contain crop-oil concentrates (COCs) and foliar fertilizers (FFs). Efforts were made herein to correlate surface tension and viscosity to spray droplet size under a variety of aerial application conditions, but these efforts were unsuccessful. In addition, spray mixtures were examined to compare relative evaporation rates. Researchers are encouraged to actively pursue this line of work. The addition of several adjuvants and FFs were found to significantly affect spray droplet size, so applicators should pay careful attention to spray tank composition when making aerial spray applications.

Author Information

Fritz, Bradley, K.
USDA ARS Aerial Application Technology Research Unit, College Station, TX, US
Hoffmann, W., Clint
USDA ARS Aerial Application Technology Research Unit, College Station, TX, US
Gizotti-de-Moraes, Jesaelen
University of Nebraska–Lincoln, West Central Research and Extension Center, North Platte, NE, US
Guerrerio, Marcella
University of Nebraska–Lincoln, West Central Research and Extension Center, North Platte, NE, US
Golus, Jeff
University of Nebraska–Lincoln, West Central Research and Extension Center, North Platte, NE, US
Kruger, Greg, R.
University of Nebraska–Lincoln, West Central Research and Extension Center, North Platte, NE, US
Price: $25.00
Contact Sales
Related
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Details
Developed by Committee: E35
Pages: 22–32
DOI: 10.1520/STP160220160134
ISBN-EB: 978-0-8031-7650-8
ISBN-13: 978-0-8031-7649-2