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Crushing weed resistance with flexible, effective herbicides

Wheat farmers need multiple modes of action and application flexibility. Quelex® herbicide with Arylex® active provides both for more control.

February 1, 2024

3 Min Read
Quelex® herbicide offers weed control flexibility
Submitted by Corteva Agriscience

Weed species continue to develop resistance to herbicides, especially when those products are used alone on a year-in, year-out basis. This provides a constant challenge to farmers who need both immediate and long-term weed control solutions.  

Meanwhile, weather patterns in recent years have highlighted the need for flexible application timing. Today’s farmers require herbicide products that deliver multiple modes of action and application flexibility. 

One product that wheat growers can turn to is Quelex® herbicide from Corteva Agriscience. Quelex herbicide, with Arylex® active provides two modes of action to deliver control of difficult broadleaf weeds, including ALS- and glyphosate-resistant weeds. Quelex herbicide combines florasulam, a Group 2 ALS inhibitor, with Arylex active, a Group 4 synthetic auxin mechanism, to give wheat growers an effective and flexible weed control option.  

To delay development of resistant weeds, farmers need to employ multiple modes of action. Weed scientists have overwhelmingly advocated use of multiple products to keep weed resistance at bay. Farmers need all the options they can find. 

Today’s wheat growers can use Quelex herbicide as both a preplant burndown and postemergence herbicide for the control of annual broadleaf weeds such as common lambsquarters, redroot pigweed, cleavers, henbit, wild buckwheat and mustards in spring wheat, winter wheat or durum. 

These growers want application flexibility as well, and Arylex active allows them to be more agile in making their weed-control decisions. It works in a range of climate conditions – from cool, wet springs to warm, dry autumns: Farmers can base application on their weed control needs rather than on a weather forecast. In addition, Arylex active degrades rapidly in the soil, providing an even wider window of opportunity. 

“Combining strength with flexibility, Quelex herbicide with Arylex active provides optimum control of broadleaf weeds, including ALS- and glyphosate-resistant weeds,” says Drew Clark, Corteva product manager for Cereal Herbicides. “You gain the freedom to customize your weed management program through crop rotation flexibility and a broad range of application options with Quelex herbicide.” 

Farmers should use Quelex herbicide – like all herbicide alternatives – as part of an Integrated Pest Management (IPM) program aimed at preventing costly pest damage. Farmers will benefit from an appropriate IPM including resistance management strategies and practices that delay or reduce the development of herbicide-resistant weed biotypes. Good practices include field scouting, use of weed-free crop seed, cultural practices including burndown herbicides, crop rotations and identification of specific weed pests. It’s important to use the correct product rates on target weeds at the correct growth stage – usually 2 to 4 inches and actively growing.  

Wheat farmers face enough challenges from planting season, through growing season and into the harvest season. Learn more about taking advantage of the efficacy and flexibility Quelex herbicide offers to customize weed management programs for optimum control. 


®™Trademarks of Corteva Agriscience and its affiliated companies. Quelex® is not registered for sale or use in all states. Contact your state pesticide regulatory agency to determine if a product is registered for sale or use in your state. Arylex® is a registered active ingredient. Always read and follow label directions. © 2024 Corteva.   018247 QLX (12/23) 

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