SEDL / STP / STP1268-EB / STP16044S

Surfactant Effects on Aerial Spray Droplet Spectra

Ledson, TM
Post-Doctoral Research Associate, Professor, and Assistant Professor, Plant Pathology, and Weed Science, New Mexico State University, Las Cruces, NM

Huddleston, EW
Post-Doctoral Research Associate, Professor, and Assistant Professor, Plant Pathology, and Weed Science, New Mexico State University, Las Cruces, NM

Sanderson, R
Post-Doctoral Research Associate, Professor, and Assistant Professor, Plant Pathology, and Weed Science, New Mexico State University, Las Cruces, NM

Pages: 6    Published: Jan 1996

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Abstract

Volumetric droplet size spectra of selected non-ionic surfactants as tank mix additives were evaluated in a wind tunnel. Metsulfuron methyl and paraquat were mixed at recommended rates prior to the addition of the surfactants. Four concentrations, 0.0625, 0.125, 0.250, and 0.500% v/v of six surfactants were atomized in a 58 m/s (131 mph) airstream using a D6-46 nozzle at 45 degrees down and back. Dv0.5, DvO.1 decreased with increasing surfactant concentration and % volume < 150μm increased. Significant differences between surfactants were detected.