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Pod eaters: Scouting tips and thresholds
…most common pod feeders in canola in Western Canada. Bertha armyworm. Credit: Justine Cornelsen Bertha armyworm Berthas come in brown, black and green shades. The green berthas are shinier than…
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ID green worms accurately
…of the field at egg laying. Bertha armyworm at a developing stage. Source: Saskatchewan Ministry of Agriculture Clover cutworm are similar in size and feeding activity to bertha armyworm. Differences…
Read moreQuestions of the Week
…down in the canopy. (Thresholds for major canola insects) (Insect scouting how to) Diamondback moths are being reported across the Prairies, though not yet in large numbers. Bertha armyworm reports…
Read moreInsect update
…canola pods. The others are lygus and bertha armyworm. Read more Further reading: AAFC Insect Field Guide Prairie Pest Monitoring Network: Bertha armyworm scouting tips Field Heroes bertha armyworm guide…
Read moreCanola Watch quiz – How many berthas?
It’s ‘I spy’ time! This quiz is just one question but too fun to pass up. Train your eye for bertha scouting. 1. Look closely at the photo below. How…
Read moreThree insects to look for on canola pods
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,…
Read moreLabel update for lambda-cyhalothrin removes feed use
…the provincial crop protection guides for Alberta, Saskatchewan or Manitoba, or the following Canola Encyclopedia resources to manage: Bertha armyworm Cabbage seedpod weevil Cutworms Diamondback moth Flea beetles Grasshoppers Lygus…
Read moreSpray berthas in the evening
On hot days, bertha armyworms take shelter low in the canopy or on the ground under leaf litter. This is not a good time to scout or spray. Bertha…
Read moreInsect update: The biggies plus clover cutworms and little red bugs
…the situation last year and includes tips for scouting this year. Bertha armyworm. Trap counts of bertha armyworm adult moths are low to date across the Prairies. Alberta map Cabbage…
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