Typical Use Rates for 2,4-D on Pasture and Rangeland in Arizona

Date: January 12, 2005

To: Harold D. Coble
Agronomist
USDA/ARS/OA

CC: Rick Melnicoe
Director, Western Region Integrated Pest Management Center

From: William B. McCloskey
University of Arizona

Hi, Harold,

I received a forwarded email from you requesting information about pasture and range 2,4-D use rates.

Labels permit rates in the 0.5 to 2 lb ae/A rate (1-4 pints) for broadleaf weed control in pastures. Most applications go out in the 2 to 3 pint/A range depending on weed size and moisture conditions. Dry conditions require higher rates.

Hope this helps.

Bill
William B. McCloskey, Ph.D.
Associate Specialist, Weed Science
Department of Plant Sciences
University of Arizona
Tucson, AZ 85721-0036
Phone: (520) 621-7613