June 28, 2017
Red turnip beetles are eating large patches in a few fields in central Alberta. Red turnip beetles eat plants from the brassica family only, and they are sometimes — though rarely — an economic pest in canola…
June 22, 2017
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, spraying is rarely recommended before 10% bloom…
June 14, 2017
Can you go 4 for 4 on this worm-themed quiz?…
June 14, 2017
Some fields are thinned by cutworm, diamondback moth larvae are at work but control is not usually required at this crop stage and swede midge are early in Ontario…
June 7, 2017
With hot, dry conditions, canola seedlings already under pressure from intense flea beetle feeding dried out and died…
May 31, 2017
Test your cutworm knowledge. Answers to these five questions are found in the new guide, "Cutworm Pests of Crops in Western Canada" from Agriculture and Agri-Food Canada…
May 31, 2017
Why scout? Reason one: To confirm that cutworms are the cause. For example, fungal seedling diseases can cause seed and seedling decay that can lead to patches of missing plants Reason two: To identify the cutworm species present as this can influence management decisions. Underground-feeding cutworms are less likely to encounter spray, for one thing. And thresholds vary by species…
May 31, 2017
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 why perhaps it seems numbers are lower in many areas so far this year. They just haven’t come out yet in large numbers…
May 31, 2017
A few flea beetles in a field are not worth the time and investment to spray. They will not cause economic losses. Only when defoliation reaches 25% across the field and feeding pressure continues does it make sense to spray for flea beetles…
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