Non-corn options for livestock producers to manage Bt-resistant corn rootworm

In fields where Bt rootworm corn hybrids have been used for more than three consecutive years, resistance among corn rootworm populations is suspected. Growers can no longer rely solely on Bt hybrids for protection against rootworm injury. The best management practice to reduce the resistant rootworm population is to rotate out of corn for at […]

Read More…

Mitigation Measures for Bt Resistant Corn Rootworm

Extensive injury by corn rootworm (CRW) to pyramid Bt rootworm (Bt-RW) hybrids was observed in several Ontario counties in 2020, suggesting that CRW populations have developed resistance to multiple Bt-RW proteins. The Canadian Corn Pest Coalition (CCPC) and OMAFRA have developed mitigation recommendations for continuous corn producers, in hopes of knocking back the resistant corn […]

Read More…

Continuous Corn Growers Should Check Fields for Rootworm Resistance to Bt Hybrids

Canadian Corn Pest Coalition News Release: Corn rootworm (CRW) has historically been one of the most important pests of corn in Canada and can cause extreme economic loss and increased management costs.  High CRW pressure in Ontario in 2020 is challenging current Bt corn rootworm hybrids and several growers of Bt rootworm hybrids are reporting […]

Read More…

True Armyworm Survey

This article was written by Tracey Baute, Entomologist- Field Crops and Joanna Follings, Cereals Specialist True armyworm (Figure 1) has been reported in a number of regions in the province including but not limited to Grey, Bruce, Simcoe, Haldimand, Niagara, Middlesex, Lambton, Elgin, Oxford, Perth, and Bruce counties.  Armyworm has been found at low levels […]

Read More…