Improving crop risk assessment tools for bertha armyworms

Researcher: Scott Meers, Alberta Agriculture and Forestry, Brooks AB; Owen Olfert, Agriculture and Agri-Food Canada, Saskatoon SK

Project Code: CARP CCC 2012.19 Meers

Final Report: March 2016

Summary: Although outbreaks are sporadic, the bertha armyworm continues to be an economically significant pest of canola in western Canada. Researchers initiated a three-year study in 2012 to revalidate the relationship between the trap catches and larval populations, as well as to more clearly define the risk categories and fine-tune the monitoring system to improve forecasting efficiency. Overall, the research has reconfirmed the validity of the current bertha armyworm monitoring and forecasting system and that current warning thresholds based on moth catches appear to be working well.

Click the links below to download a short version of the report, the full detailed long version of the report, or the related Canola Digest PDF.

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