Quick crop establishment lowers risk of flea beetles

Apr 23, 2025

Flea beetles remain the top ranked canola pest, according to the latest grower survey. The Canola Council of Canada 2024 grower survey asked respondents to name the diseases, weeds and insects of greatest economic risk to canola. Flea beetles were the most common answer in 2024, as they were in the 2022 and 2020 surveys.

While flea beetles seem to be unavoidable, growers can reduce the risk. John Gavloski, entomologist with Manitoba Agriculture, says canola crops that reach the four-leaf stage within three to four weeks of seeding are less likely to need protection from a foliar pesticide spray. Canola crops that require in-season foliar sprays are often slow-establishing and non-competitive.

Weather can be a major factor in rapid stand establishment. Canola sown in warm, moist soil will emerge quickly and uniformly. Warm conditions without moisture will often favour flea beetles over the crop. Whatever the weather, the following agronomy steps put the crop in the best possible scenario against flea beetles.

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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.