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These Fundamentals articles represent our core canola best management practices for yield, profitability and sustainability. These articles are more detailed than our e-newsletter articles and explain the science and experience behind the recommended practices. Content is linked to additional resources in our Canola Encyclopedia and Canola Research Hub.
Insects fundamentals
Grasshopper management in canola: Thresholds, identification, and control strategies
Grasshoppers, particularly the two-striped, clearwing, migratory and Packard’s species, can pose a significant threat to canola crops on the Canadian Prairies. This article describes the…
Flea beetles: Management tips
This article has tips for better canola crop establishment and tips to improve results for in-crop insecticide applications…
Lygus bugs – scouting, timing and thresholds
Sweep net for lygus at late flowering and podding stages. Count adults and late instars. The standard threshold is 20-30 per 10 sweeps…
Cabbage seedpod weevil – scout and control tips
Spraying is rarely recommended before the canola crop reaches 10% flowering stage. Three reasons to wait are…
The flea beetle spray decision: 8 steps
Slow-growing crops under intense flea beetle pressure may require foliar insecticide. Here are 8 steps to make the spray decision…
How to assess leaf area loss from flea beetles
The action threshold for flea beetles in canola in Canada is an average leaf area loss of 25 per cent or more. To make that…