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: Scouting and spray timing”
June 22, 2017

Cabbage seedpod weevil: Scouting and spray timing

Cabbage seedpod weevils move to canola fields at the bud to early-flower stages. While they will feed on buds and destroy some of them,
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Featured image for “Canola Watch quiz: Worms”
June 14, 2017

Canola Watch quiz: Worms

Can you go 4 for 4 on this worm-themed quiz?
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Featured image for “Insects: Diamondback moth, cutworms, flea beetle and more”
June 14, 2017

Insects: Diamondback moth, cutworms, flea beetle and more

Some fields are thinned by cutworm, diamondback moth larvae are at work but control is not usually required at this crop stage and swede
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Featured image for “Flea beetles and stressed crop”
June 7, 2017

Flea beetles and stressed crop

With hot, dry conditions, canola seedlings already under pressure from intense flea beetle feeding dried out and died.
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Featured image for “Canola Watch quiz: Cutworms”
May 31, 2017

Canola Watch quiz: Cutworms

Test your cutworm knowledge. Answers to these five questions are found in the new guide, “Cutworm Pests of Crops in Western Canada” from Agriculture
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Featured image for “Timely cutworm scouting and spray decisions”
May 31, 2017

Timely cutworm scouting and spray decisions

Why scout? Reason one: To confirm that cutworms are the cause. For example, fungal seedling diseases can cause seed and seedling decay that can
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Featured image for “Flea beetles: Temperature influences activity”
May 31, 2017

Flea beetles: Temperature influences activity

Cool, windy, wet weather can delay flea beetle emergence. Peak emergence of the crucifer flea beetle occurs when ground temperatures reach 15°C, which is
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Featured image for “Are those flea beetles worth spraying?”
May 31, 2017

Are those flea beetles worth spraying?

A few flea beetles in a field are not worth the time and investment to spray. They will not cause economic losses. Only when
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Featured image for “Flea beetle thresholds”
May 25, 2017

Flea beetle thresholds

The economic thresholds – the point at which foliar insecticide provides an economic benefit – could be when damage reaches 50%, but leaf area
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Featured image for “8 steps to make the right flea beetle spray decision”
May 17, 2017

8 steps to make the right flea beetle spray decision

While only a small percentage of canola fields tend to require flea beetle management in addition to seed treatment, all fields should be monitored
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Featured image for “Insects: Cutworms in some fields”
May 17, 2017

Insects: Cutworms in some fields

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
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Featured image for “Insects in spring-harvested canola”
May 17, 2017

Insects in spring-harvested canola

Some farmers harvesting crops this spring have noticed higher numbers of insects in their samples. These are primarily seed-eating carabid beetles and fungus-eating beetles
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