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Overlapping Residual Herbicides May Be Necessary for Effective Weed Management

By Eric Jones and Clarence Winter et.al

Weed management is always a critical component of crop production, but in sunflowers, it poses unique challenges. Compared with many other crops, there is a limited selection of herbicides that are labeled for sunflowers, especially postemergence herbicides.

Certain herbicides can be applied postemergence for effective control of grass weeds (i.e., clethodim [Select Max]). Additionally, there are herbicide traits that allow for the application of select ALS-inhibiting herbicides in Clearfield (i.e., imazamox [Beyond Extra]) and Express (i.e., tibenuron [Express]). While these herbicides can effectively manage many broadleaf weeds and some grass weeds, kochia and waterhemp in South Dakota are resistant to these herbicides.

Preemergence herbicides will be paramount to manage kochia and waterhemp in sunflower production.

Source : sdstate.edu

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Independent Seed, National Impact | On The Brink: Episode 9

Video: Independent Seed, National Impact | On The Brink: Episode 9

A survey of 200 independent seed businesses reveals what Canada's seed sector actually contributes — and what it stands to lose.

On the Brink, Justin Funk, a third-generation agri-marketer, shares the findings of a national survey conducted in early 2026. The numbers reframe the conversation: independent seed companies in Canada represent upwards of $1.7 billion in dedicated seed infrastructure, approximately 3,000 full-time equivalent jobs in rural communities, and an estimated $20 million in annual community contributions. And roughly 90% of Canada's cereals, pulses, and other small pollinated crops flow through them.

The survey also asked how dependent these businesses are on public plant breeding to survive. The answer was unambiguous. For policymakers evaluating the future of publicly funded breeding programs, Funk argues the economic case for this sector and the case for public plant breeding are the same argument.

On the Brink is a cross-country video series exploring the future of plant breeding in Canada. Each episode features voices from across the industry in an open, ongoing conversation about innovation and long-term investment in Canadian agriculture.