Evaluating Non-Selective Applicators for the Control of Herbicide-Resistant Weeds in Georgia

Summary

Research on the use of non-selective herbicide applicators has resulted in a Section 24(c) SLN label for Georgia peanut farmers.

Situation

Georgia growers have expressed a high level of interest in using non-selective applicator technologies to assist them in their efforts to control herbicide-resistant weeds, particularly glyphosate and ALS-resistant Palmer amaranth. New information about their effectiveness is unavailable.

Response

Research was conducted in 2010 to evaluate several non-selective applicators for their potential to control large Palmer amaranth plants that may have escaped earlier control tactics. Five applicators were evaluated including the following: gravity flow rope-wick, GrassWorks WeedWiper, TopCrop Super Sponge, LMC-Cross Wick Bar, and the Wickmaster Rope-Wick.

Impact

Results indicated that non-selective applicators have good potential to be used for the control of escaped Palmer amaranth plants. Results of this research led to the development of a 24(c) Special Local Needs Label for the use of Gramoxone Inteon (paraquat) in peanut. Prior to this, there were no herbicides registered for use in non-selective applicators that could be used to help manage herbicide-resistant Palmer amaranth. Additionally, this research has led to invited speaking opportunities at meetings such as the University of Arkansas' Pigweed Symposium (November 2010) and the SWSS Palmer Amaranth Control Symposium (January 2011).

State Issue

Agricultural Profitability and Sustainability

Details

  • Year: 2010
  • Geographic Scope: National
  • County: Tift
  • Program Areas:
    • Agriculture & Natural Resources

Author

    Prostko, Eric P.

Collaborator(s)

CAES Collaborator(s)

  • Tankersley, Brian Daniel
Back To
Research Impact