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Wheat growers: How to manage herbicide-resistant weeds

April 14, 2016

Yield-robbing weeds infest wheat fields, compete with crops and can ultimately impact yield potential and crop quality. Growers turn to herbicides as one method of minimizing these threats and protecting their wheat. Many factors go into an effective herbicide program:

  • Application timing
  • Use of full labeled rates
  • Proper use of adjuvants
  • Effective spray application

Even when everything has seemingly been done right to protect wheat fields, growers still find areas where weeds have not been controlled. This lack of control could potentially mean a larger issue is developing: herbicide resistance.

According to The International Survey of Herbicide Resistant Weeds, there are 14 herbicide-resistant broadleaf and grass weed species found in U.S. wheat crops today. Wheat growers have observed a particularly widespread occurrence of herbicide-resistant kochia and wild oat. Like other weeds, they compete with the crop for valuable sunlight, water and soil nutrients needed for robust development and strong yield.

To stay ahead of this issue and retain maximum yield potential, Syngenta recommends growers consider the following proactive management techniques.

  • Manage weeds to prevent seed bank build-up
  • Utilize proper herbicide timing
  • Use the full, recommended herbicide rates
  • Diversify modes of action to reduce the risk of herbicide resistance
  • Diversify crops for future harvests

This spring, Syngenta recommends controlling weeds by making an effective herbicide application. Syngenta offers a robust portfolio of cereal herbicides offers growers multiple grass, broadleaf and cross-spectrum options with varying MOAs:

  • Axial® XL and Discover® NG herbicides for excellent control of grass weeds
  • Sierra™ and Axial Star for cross-spectrum options and the ability to tailor weed control programs to the specific spectrum in each field
  • Orion® herbicide is highly effective against yield robbing broadleaf weeds, and serves as an effective tank-mix partner with Axial brands for one-pass grass and broadleaf weed control

Pending registration for the 2017 growing season, Talinor™ herbicide will deliver excellent standalone control of resistant and other tough-to-control broadleaf weeds in barley, spring wheat (including durum)

Utilizing multiple tools, and being proactive can help growers get ahead of weeds, which can help them grow more wheat.

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