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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 square foot) in plants with flowers and pods…
Canola Watch Posts
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Berth armyworm moth counts are generally low (fewer than 300 per trap) across the Prairies, which means a reduced risk for worm damage over the coming weeks… -
Heavy rains can increase the sclerotinia stem rot risk but they also make fields too wet for ground sprayers. This can delay timely applications, especially because demand for aerial applicators can make for long wait times. Here are scenarios that may help you work through this situation… -
Factors that increase the sclerotinia risk, factors that reduce the risk, and situations where a second application may be warranted…
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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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Rhizoctonia infection at the bolting and flowering stages of the season can cause roots to pinch off at the crown — which is right around ground level… -
The current situation for lygus, bertha armyworm, cabbage seedpod weevil, diamondback moth and swede midge… -
Before spraying, make sure your canola is at the right stage to be damaged by the worms and that the worms are actually the species you’re trying to control. Here’s how to tell the difference… -
The later hail occurs in the season, the more damage it can do to yield. That said, flowering canola can, with enough time, recover from hail that knocks off a large percentage of flowers…