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As predicted by moth traps, the Peace region has fields at thresholds. Beyond there, a few field here and there across the Prairies have been sprayed but the worm is not a problem on most fields…
Insect update
August 21, 2019
Diamondback moth
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Identify green worms accurately
July 17, 2019
The most damaging of the 'green' worms is the bertha armyworm, which can be green, brown or black…
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Three insects to look for on canola pods
July 26, 2018
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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Diamondback moth larvae observed
July 19, 2018
Diamondback moth larvae are at noticeable levels in many canola fields in the Eastern and southern Interlake areas of Manitoba. But levels are generally below the economic threshold…
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Insect update: Bertha, diamondback and weevil counts
July 11, 2018
Insect trap counts are generally low across the Prairies, but bertha counts keep rising. Here are the latest provincial survey results…
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Map of the Week – wind trajectories
May 24, 2018
Of particular interest are those trajectories that, prior to their arrival in Canada, originated over northwestern and southern USA and Mexico – anywhere diamondback moth populations overwinter and adults are actively migrating…
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Canola Watch quiz: Diamondback moth
August 2, 2017
Test your diamondback management skills with these four questions…
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Diamondback moth larvae: Common questions
August 2, 2017
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…
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Keep watch for diamondback moth larvae
July 26, 2017
Diamondback moth larvae have been found in many fields this year. In most cases counts have been well below economic thresholds, but keep looking just in case. Some fields are at thresholds and a few have been sprayed…