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Canola Watch provides timely answers to top canola agronomy questions on diseases, insects, weeds and so much more.
Featured image for “July 13 Quiz – Lesions”
July 13, 2016

July 13 Quiz – Lesions

How well do you know your canola leaf lesions? Take the quiz to find out! (Photo credit: Angel Hewson)
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Featured image for “Mid- to late-season waterlogging”
July 13, 2016

Mid- to late-season waterlogging

Heavy rains in some areas have canola fields looking like the one in this photo from Brent Wiebe. So what happens to canola plants
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Featured image for “Check crowns and primary roots”
July 13, 2016

Check crowns and primary roots

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 “Light-coloured petals: Sulphur or something else?”
July 13, 2016

Light-coloured petals: Sulphur or something else?

Canola Watch had a question this week about light-coloured petals and what can cause them. The field in question had large unruly patches of
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Featured image for “Diamondback moth larvae — Thresholds”
July 13, 2016

Diamondback moth larvae — Thresholds

Thresholds for diamondback moth larvae are 100-150 larvae per square metre in immature to flowering plants and 200-300 larvae per square metre (20-30 per
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Featured image for “Insect update: Lygus, bertha, checkered white butterfly”
July 13, 2016

Insect update: Lygus, bertha, checkered white butterfly

Berth armyworm moth counts are generally low (fewer than 300 per trap) across the Prairies, which means a reduced risk for worm damage over
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Featured image for “Sclerotinia: Late or second applications”
July 13, 2016

Sclerotinia: Late or second applications

Heavy rains can increase the sclerotinia stem rot risk but they also make fields too wet for ground sprayers. This can delay timely applications,
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Featured image for “Sclerotinia: Factors that increase and reduce risk”
July 6, 2016

Sclerotinia: Factors that increase and reduce risk

Factors that increase the sclerotinia risk, factors that reduce the risk, and situations where a second application may be warranted….
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Featured image for “Sclerotinia management: Common questions”
July 6, 2016

Sclerotinia management: Common questions

Here are a few questions we often get on sclerotinia stem rot management. Answers and links may help with your management decisions.
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Featured image for “Look out for foot rot: Consider rotations”
July 6, 2016

Look out for foot rot: Consider rotations

Rhizoctonia infection at the bolting and flowering stages of the season can cause roots to pinch off at the crown — which is right
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Featured image for “Insect update: Lygus, bertha armyworm, CSPW”
July 6, 2016

Insect update: Lygus, bertha armyworm, CSPW

The current situation for lygus, bertha armyworm, cabbage seedpod weevil, diamondback moth and swede midge.
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Featured image for “ID green worms accurately”
July 6, 2016

ID green worms accurately

Before spraying, make sure your canola is at the right stage to be damaged by the worms and that the worms are actually the
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