While only a small percentage of canola fields tend to require flea beetle management in addition to seed treatment, all fields should be monitored to assess the potential threat. Begin monitoring right after emergence and through until at least the four-leaf stage. Seed treatment can be effective through most of this period, but slow starting or slow growing crops under intense flea beetle pressure may require a foliar spray.
Please read these updated articles:
- 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