Insects

Canola Watch provides timely answers to top canola agronomy questions on diseases, insects, weeds and so much more.
Featured image for “Cabbage seedpod weevil: When to spray”
June 15, 2016

Cabbage seedpod weevil: When to spray

Cabbage seedpod weevils are attracted to the buds on early canola plants, as shown in this Brooke Moon photo. While they will feed on
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Featured image for “How to identify your weevils”
June 15, 2016

How to identify your weevils

Pea leaf weevils (bottom) can be found in canola but the only weevil of concern is the cabbage seedpod weevil (top). Thank you Shelley
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Featured image for “Cutworms: Reseeding and the risk period”
June 15, 2016

Cutworms: Reseeding and the risk period

Usually by the end of June, most of the cutworms that overwintered as eggs or partly grown larvae (including redbacked, as shown in this
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Featured image for “Cutworms: The basics”
June 1, 2016

Cutworms: The basics

Higher than normal cutworm feeding has been reported in some locations. This could be due to various factors, including the long fall, early spring
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Featured image for “Flea beetles: At-risk crops”
June 1, 2016

Flea beetles: At-risk crops

Canola fields at greatest risk from flea beetles — therefore fields most likely to need a spray — tend to be those seeded early
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Featured image for “Ontario updates swede midge infosheet”
June 1, 2016

Ontario updates swede midge infosheet

Tracey Baute and Meghan Moran with the Ontario Ministry of Agriculture, Food and Rural Affairs and Dr. Rebecca Hallett at the University of Guelph,
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Featured image for “Damage ID: Cutworms or seedling diseases?”
May 26, 2016

Damage ID: Cutworms or seedling diseases?

Cutworms and seedling diseases are fairly common causes for toppled or missing plants this time of year. Here are a few tips to help
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Featured image for “Top 10 things to look for after emergence”
May 26, 2016

Top 10 things to look for after emergence

Flea beetles are just one thing to look for while scouting one to three weeks after seeding.
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Featured image for “Scouting: The critical first 21 days”
May 18, 2016

Scouting: The critical first 21 days

The week after seeding is a good time to verify seeding depth and to check seeds and seedlings for rots and blights. Disease damaged
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Featured image for “8 steps to make the right flea beetle decision”
May 18, 2016

8 steps to make the right flea beetle decision

Here is how to make the flea beetle spray decision….
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Featured image for “Flea beetles: When to spray?”
May 11, 2016

Flea beetles: When to spray?

Flea beetles are feeding on volunteer and early-seeded canola but their presence does not mean they need to be sprayed.
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Featured image for “Flea beetles feeding on volunteers”
May 4, 2016

Flea beetles feeding on volunteers

Warm weather has meant an earlier emergence of overwintering adult flea beetles. Given that flea beetles will be active when canola emerges, growers will
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