Insects

Canola Watch provides timely answers to top canola agronomy questions on diseases, insects, weeds and so much more.
Featured image for “Lygus bugs: Scouting, timing and thresholds”
August 6, 2020

Lygus bugs: Scouting, timing and thresholds

Scout lygus at late flowering and podding stages using a standard insect sweep net of 38 cm (15″) diameter. The standard threshold is 20-30
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Featured image for “Bertha armyworm: Updates and scouting tips”
July 29, 2020

Bertha armyworm: Updates and scouting tips

Even if an area is low risk according to provincial risk maps, local hot spots can flare up – which is why each farm
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Featured image for “Diamondback moth larvae hot spots”
July 29, 2020

Diamondback moth larvae hot spots

Diamondback moth larvae are generally low across the Prairies so far, but one hot spot has been noted in Rural Municipality 10 in Saskatchewan.
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Featured image for “Quiz – Meet the beneficials”
July 22, 2020

Quiz – Meet the beneficials

While out scouting for insects feeding on pods, you might also find these insects at work. Each of the insects in the quiz will
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Featured image for “Pod eaters: Scouting tips and thresholds”
July 22, 2020

Pod eaters: Scouting tips and thresholds

Check pods for feeding from bertha armyworm, diamondback moth larvae, lygus and other pests. If any pod feeders are found, make accurate counts in
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Featured image for “Quiz – Green Worms 2020”
July 15, 2020

Quiz – Green Worms 2020

Can you identify these five green worms that can be found in canola at this time of year?
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Featured image for “Give the plants a mid-season root check”
July 15, 2020

Give the plants a mid-season root check

While scouting canola fields at flowering and podding stages, dig up a few plants in each field and look at the crown and primary
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Featured image for “Quiz – Insect eggs”
July 8, 2020

Quiz – Insect eggs

Eggs are not a target for management, but this is a fun quiz that will improve your agronomy knowledge. Look out for these when
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Featured image for “Insect update”
July 8, 2020

Insect update

Seeing about ground symptoms? Root maggots are one possible cause. Their damage can also increase root disease infections.
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Featured image for “Insect update – June 24”
June 24, 2020

Insect update – June 24

Slugs have been found feeding on canola in wet areas of Alberta. Some fields are starting to flower – which means we have to
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Featured image for “Quiz – Am I too late?”
June 17, 2020

Quiz – Am I too late?

Four scenarios with “Yes” or “No” answers on application timing.
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Featured image for “Insect Update: Flea beetle products, diamondback moth numbers”
June 10, 2020

Insect Update: Flea beetle products, diamondback moth numbers

Trap counts are showing higher numbers of diamondback moths in a few areas, but this just means that the moths have arrived, and is
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