Translator Disclaimer
1 October 2005 Effects of 2,4-D Formulation and Quinclorac on Spray Droplet Size and Deposition
AUDIE S. SCIUMBATO, SCOTT A. SENSEMAN, JIM ROSS, TOM C. MUELLER, JAMES M. CHANDLER, JOE T. COTHREN, IVAN W. KIRK
Author Affiliations +
Abstract

Studies were conducted on the campuses of Texas A&M University in College Station, TX, and New Mexico State in Las Cruces, NM, to determine the spray droplet size spectra produced by quinclorac and 2,4-D as the liquid, dry, and emulsion formulations during application with various nozzle sizes using a laser spectrometer. Quinclorac and 2,4-D formulations were also sprayed through three different nozzle sizes in a drift chamber and allowed to settle on glass slides placed downwind. The amounts of each herbicide deposited on the slides were quantified using high-performance liquid chromatography/photodiode array (HPLC/PDA) analysis to assess spray deposition of each formulation at different wind velocities. Data from the laser spectrometer suggested that formulations of 2,4-D affected droplet size, particularly when the 380 ml/min flat-fan nozzle was used. Quinclorac droplet sizes were similar to water regardless of nozzle size. Liquid and dry-formulated 2,4-D tended to be deposited downwind in greater quantities than the emulsion formulation when using the 380 and 760 ml/min spray nozzles with wind velocity of 15 km/h.

Nomenclature: 2,4-D, quinclorac.

Additional index words: Laser spectrometer, drift chamber.

Abbreviations: HPLC, high performance liquid chromatography; HSD, honestly significant difference; PDA, photodiode array.

AUDIE S. SCIUMBATO, SCOTT A. SENSEMAN, JIM ROSS, TOM C. MUELLER, JAMES M. CHANDLER, JOE T. COTHREN, and IVAN W. KIRK "Effects of 2,4-D Formulation and Quinclorac on Spray Droplet Size and Deposition," Weed Technology 19(4), 1030-1036, (1 October 2005). https://doi.org/10.1614/WT-04-236R.1
Published: 1 October 2005
JOURNAL ARTICLE
7 PAGES


SHARE
ARTICLE IMPACT
RIGHTS & PERMISSIONS
Get copyright permission
Back to Top