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Bertha armyworm thresholds
Mature bertha armyworm. Source: Roy Ellis Bertha armyworm is one pest that can do a lot of damage in a short time. They’re large and eat a lot. Even within…
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Be on alert for bertha armyworms
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…
Read moreBertha armyworm: A few warm spots
…levels of larvae will be present, but indicates that while scouting canola in late-July and August look for the presence of potential feeding from bertha armyworm larvae. Bertha armyworms, various…
Read moreInsect update: Lygus, bertha armyworm, CSPW
…borders. Read more. Bertha armyworm. Most regions across the Prairies are reporting a low risk (fewer than 300 moths in traps throughout the season) at this point. Some Manitoba sites…
Read moreCanola Watch quiz – bertha armyworm
Test your bertha armyworm identification and scouting skills with these 6 questions. 1. The following are all features of bertha armyworm, but which one best distinguishes bertha armyworm from other…
Read moreWhich worm is it: bertha, diamondback or cabbage?
Many growers are spraying for bertha armyworm, even though a forecasting program based on collecting adult moths in pheromone-baited traps had reported low bertha armyworm moth counts in most areas….
Read moreStation 2: Bertha, diamondback and their natural enemies
…has a few natural enemies. They are an orange wasp called Banchus, which lays eggs in the bertha armyworm, and Tachinid flies, which lay eggs on the backs of bertha…
Read moreBertha armyworm update
…have been a low threat to canola this year. But some fields can encounter higher populations while others nearby have few or none. Bertha armyworm scouting tips Bertha armyworm thresholds…
Read moreBertha armyworm on the move soon
…to link to MAFRI’s bertha armyworm factsheet. Bertha armyworm scouting tips —It is easiest to locate the larvae in early morning or in the evening when they are up feeding…
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