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Late-season insects and pre-harvest intervals
We had reports this week of bertha armyworm at higher numbers (maybe not at thresholds) in some very localized areas, lygus (it’s getting late), flea beetles (don’t spray them, it…
Read moreSearch Results for: bertha
Scouting and field survey tasks for this week
…for lygus to penetrate. Lygus scouting, thresholds and timing. If choosing to spray, find a product that fits the pre-harvest interval. Pod damage from bertha armyworm feeding. Credit: Justine Cornelsen…
Read moreIssues of the Week
…that have scouted and found bertha this past week have needed to spray only one or two fields out of many. Bertha moths can be choosy which fields looked best…
Read moreHelp with insect surveys for 2018
Alberta, Saskatchewan and Manitoba will be doing bertha armyworm and diamondback moth surveys again in 2018. Diamondback moth traps are sentry traps to show the presence/absence of adults, but there…
Read moreInsect updates
Bertha armyworm. Most areas of the Prairies are low to moderate risk, according to moth counts. Even if an area is low risk according to provincial risk maps, local hot…
Read moreDisease ID tips for pre-harvest scouting
…25 per cent have exit holes and the crop was not sprayed, it probably should have been. Look for other insect damage to pods. Debarked pods (indicating bertha armyworm or…
Read moreLots of green worms. What are they?
Bertha armyworm at a developing stage. Source: Saskatchewan Ministry of Agriculture Diamondback moth larvae. Notice the spindle shape — wider in the middle than at the ends. Source: Saskatchewan Ministry…
Read moreDisease ID tips for pre-harvest scouting
…pods (indicating bertha armyworm or grasshopper feeding), larger holes in pods (which could be from diamondback, grasshopper or bertha armyworm feeding) and brown rotted seeds (which can result from lygus…
Read moreStem infections: How to tell them apart
…decision. If more than 25% have exit holes and the crop was not sprayed, it probably should have been. Look for other insect damage to pods. Debarked pods (indicating bertha…
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