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A few flea beetles in a field are not worth the time and investment to spray. They will not cause economic losses. Only when defoliation reaches 25% across the field and feeding pressure continues does it make sense to spray for flea beetles.
Seeing a few flea beetles is not a call to action, but it does suggest that regular scouting is necessary.
Please read updated articles on flea beetles, including:
- Canola Encyclopedia chapter on flea beetles – which describes the insect and provides management tips.
- How to assess leaf area loss from flea beetles
- How to make the flea beetle spray decision