Mitigation Measures – Field Crop News

Understanding the Impact and Measures Needed to Address Bt Resistant Rootworm

Posted on October 26, 2020 (December 22, 2021) by Tracey Baute

Why be concerned about the Bt resistant rootworm populations showing up in Ontario? Dr. Jocelyn Smith, University of Guelph Ridgetown Campus stands in a field that has cross resistant rootworm. The grower experienced more than 50% yield loss in this 2nd year silage corn field planted with a pyramid hybrid in 2020. Jocelyn discusses the […]

Mitigation Measures for Bt Resistant Corn Rootworm

Posted on October 9, 2020 (December 22, 2021) by Tracey Baute

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 […]

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