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New PPO inhibitor herbicide under review for Canada

March 11, 2021  By Top Crop Manager

Gowan Canada and ISK Biosciences have entered into the early stages of an agreement to market Tergeo, a new PPO (protoporphyrinogen oxidase) inhibitor herbicide, in Canada.

Tergeo is a new molecule discovered by FarmHannong, a Korean agrochemical company, jointly developed by Ishihara Sangyo Kaisha, Ltd. (ISK) and FarmHannong globally. Pending review and registration by the Pest Management Regulatory Agency (PMRA), Gowan and ISK Biosciences hope to make Tergeo available to Canadian growers for the 2022 season.

“Tergeo is a new PPO inhibitor, or group 14 mode-of-action herbicide, that provides high levels of activity on wild oats in addition to key broadleaf and grass weeds in [soybean,] wheat and corn,” says Garth Render, general manager for Gowan Canada, in a press release.


Gowan is excited by their partnership with ISK Biosciences and adding Tergeo’s potential as a pre-seed burn down option for grass and broadleaf weeds to their herbicide resistance management toolkit.


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