Wheat growers get wild-oat killer in liquid form

Prairie wheat and durum growers this year can get one of their wild-oat herbicides suspended rather than stirred.

Syngenta Canada has picked up federal registration for a suspension-concentrate version of its Group 2 flucarbazone herbicide Sierra. The new version, branded Sierra 2.0, will be sold in liquid (397.33 grams per litre) rather than Sierra’s water-dispersible granular form.

Sierra 2.0’s label covers it for use against wild oat, green foxtail, volunteer tame oat and "certain broadleaf weeds" in fields of spring wheat — hard red spring, Canada Prairie spring, soft white spring and/or extra strong (utility) spring — and durum.

Broadleaf weeds on the Sierra 2.0 label include redroot pigweed, wild mustard, stinkweed, volunteer canola, green smartweed and shepherd’s purse.

The product can also be used against Group 1- and Group 8-resistant wild-oat biotypes and Group 1- and Group 3-resistant green foxtail biotypes, the company said.

Growers in the herbicide’s approved areas — the three Prairie provinces and B.C.’s Peace region only — will get "the added benefits of a liquid formulation and built-in safener, for an easier-to-use product," Jon Habok, Syngenta Canada’s asset lead for cereal herbicides, said in a release Wednesday.

Sierra 2.0 also has "a long list of proven tank-mix partners for broader spectrum activity," Syngenta said, noting the product must be tank-mixed with a labeled surfactant.

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