Bt – Field Crop News

Taking Root: Management Options for Bt-Resistant Corn Rootworm on Ontario Farms

Posted on January 6, 2021 (December 22, 2021) by Christine O'Reilly

This webinar features OMAFRA specialists who provided an update on Bt-resistant corn rootworm, the impact on cropping systems and feed supplies, mitigation strategies to reduce the impact of Bt corn rootworm resistance, and alternative feeding options. While this webinar is open to anyone, it is geared towards cattle producers (dairy and beef). The webinar aired […]

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

Posted on October 9, 2020 (December 22, 2021) by OMAFRA Field Crop Team

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 […]

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