How are your worm ID skills? Take the quiz and try to identify the four worms – two familiar, two not so much…
Insects
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Flea beetles feeding on canola leaves and pods are unlikely to cause an economic loss. Numbers have to be very high – perhaps 100 per plant – before economic losses occur…
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The three most common pod munchers are bertha armyworm, diamondback moth larvae and lygus bugs. Hot spots can sometimes be isolated to specific fields, so check each field. Before spraying, make sure insects counts are at or above economic thresholds. Applications made when insect numbers are below thresholds will not provide a positive return on investment and can do unnecessary…
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The nominal threshold for canola is seven to 12 per square metre. This article provides tips on how to scout…
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