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Alberta, Saskatchewan and Manitoba will be doing bertha armyworm and diamondback moth surveys again in 2018. To put up a trap and help with the monitoring program (including trap checking), please contact your provincial entomologist: Alberta: Email Shelley Barkley at Shelley.Barkley@gov.ab.ca or Scott Meers at Scott.Meers@gov.ab.ca Saskatchewan: Email James Tansey at james.tansey@gov.sk.ca. Manitoba: Email John Gavloski at john.Gavloski@gov.mb.ca…
Insects
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Prairie Pest Monitoring Network (PPMN) regional maps for insect pests affecting canola are provided in this article… -
A reader from southeast of Saskatoon emailed this question: I had a field with bertha armyworms on the perimeter in 2017. Numbers were not quite enough to reach spray thresholds, but very close. (I likely should have sprayed the perimeter.) My plans are to seed the field next to it to canola this year. Will this second field likely have… -
The Field Heroes website shows how natural enemies can help manage insect pest populations. Scouting is still necessary because beneficial insects do not always keep pest damage below economic levels, but spraying without consideration for economic thresholds can hurt the farm bottomline and also cause unnecessary damage to these beneficial insects… -
With each canola seed decision, growers face this question: Would a seed treatment upgrade to improve management of flea beetles and cutworms provide a return on investment? A review of flea beetle and cutworm scouting notes from the past few years will help with this decision…
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A heavily-infested field in western Manitoba (south of Riding Mountain National Park) generated a lot of interest on Twitter in the past week. It prompted a lot of scouting, which is good. But what this one field and the ensuing scouting demonstrated is that bertha armyworm population spikes can be highly localized… -
Test your diamondback management skills with these four questions…
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Diamondback moth larvae have been found in canola fields across the Prairies this year. Of those fields with the larvae, counts in many (perhaps most) are below and often well below thresholds. Some fields are at thresholds. Some fields seem to be well above thresholds. The key is to the check each field. Diamondback larvae can vary in number from… -
Bertha armyworm adult moth counts were generally low across the Prairies in 2017. A few trap sites did enter the moderate risk level, but none was high. See provincial counts in the Prairie Pest Monitoring Network blog. However, as experienced with diamondback moth trap counts this year, egg survival could be higher in dry conditions and warm weather will promote…
