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Two CCC agronomy specialists heard this week of high cutworm damage in canola fields seeded into canola stubble. Canola on canola has many potential yield risks and we can add heavy cutworm feeding to that list…
Cutworm
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Include cutworms on the scouting checklist for the first one to three weeks after emergence. Any later and management becomes more difficult because (i) spraying a registered insecticide is useless because the cutworms have developed beyond the feeding stage, and/or (ii) reseeding options are starting to be limited… -
See bare patches like this? Could be cutworms. Include cutworms on the scouting checklist for the first one to three weeks after emergence. Any later and management becomes more difficult because (i) spraying a registered insecticide is useless because the cutworms have developed beyond the feeding stage, and/or (ii) reseeding options are starting to be limited…
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Test your cutworm knowledge with these four questions, including a "dry soils" angle…
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These can be hard to tell apart sometimes. Pinched or otherwise damaged-looking stems can occur with all three. The photo shows blackleg infection. Here’s how to tell them apart… -
Test your cutworm knowledge. Answers to these five questions are found in the new guide, "Cutworm Pests of Crops in Western Canada" from Agriculture and Agri-Food Canada…
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Why scout? Reason one: To confirm that cutworms are the cause. For example, fungal seedling diseases can cause seed and seedling decay that can lead to patches of missing plants Reason two: To identify the cutworm species present as this can influence management decisions. Underground-feeding cutworms are less likely to encounter spray, for one thing. And thresholds vary by species…
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Cutworms have been observed in some regions, including the southeast Peace region and west-central Saskatchewan stretching into Alberta. In western Saskatchewan, early observations suggest that cutworms are worse in fields that had lentils last year. In general, fields that had flowering plants (crops or weed patches) in August or September of the previous year may have higher cutworm counts. These… -
AAFC has published a new cutworm guide, available as a free download, with descriptions of all pest cutworms in Canada as well as helpful management tips, including this excerpt from the scouting section…
