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New Technology Offers ALS-Resistant Weed Control in Wheat

Wheat growers searching for profitability in depressed wheat prices have a new tool to use against weeds in Quelex herbicide with Arylex active, a new Group 4 active ingredient, according to Dow AgroSciences.

According to a company report, Quelex can be beneficial on broadleaf weeds often found in no-till production systems that are completely reliant on herbicides for weed control. Growers should watch for bushy wallflower infestations and for fields that are shifting to fall germination of marestail. In addition, wheat growers may battle ALS-resistant populations of chickweed, flixweed, and henbit with Quelex.

Quelex herbicide has a five-month rotational interval for conventional winter canola varieties, as well as a three-month rotation to many of the very important double-crop commodities such as soybeans, cotton, grain sorghum, and sunflowers.

Prepare for fall or spring emergence

Flushes of ALS-resistant weeds can occur in the fall or spring.

“Scout for fall emergence of broadleaf weeds, which are more prevalent in wet conditions,” says Chad Cummings, field scientist, Dow AgroSciences. “Being cognizant of weed competition allows for fall sprays to control target weeds. Whether a fall or spring application is required, Quelex offers consistent weed control across variable climatic conditions, providing application flexibility.”

In addition to scouting for weed competition, practice crop rotation to help minimize the impact of ALS-resistant weeds. Choosing a herbicide that controls ALS-resistant weeds and allows for double cropping will help maintain the effectiveness of herbicide technologies, according to the report. Winter canola is an excellent option to remove winter annual weeds from the mix, particularly in the Southern Plains.

“There aren’t many wheat herbicides that allow for an immediate rotation to conventional canola,” says Cummings. “Quelex offers advanced broadleaf weed control and the flexibly to plant back to canola. Today’s marketplace requires flexibility and nimbleness in herbicide programs and in crop rotations, and Quelex gives you that freedom.”

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