- Corn rootworm (CRW) can be found across Ontario and Quebec.
- Corn rootworms can evolve and overcome management tactics. Controlling this pest is difficult.
- Crop rotation, avoiding corn on corn, is key to reducing CRW populations.
- Corn growers should develop a scouting program that monitors larvae and adult numbers, which predicts potential egg laying and future problems.
Figure 1. Northern (left) and western (right) corn rootworm beetles