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Canola 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…

Questions of the Week

…peak emergence of bertha armyworms. Nothing can be done for late-season flea beetles. Manitoba Crop Pest Update: Trap results: diamondback moth, bertha armyworm Saskatchewan survey updates: bertha armyworm, diamondback moth Alberta live maps: bertha armyworm, cabbage seedpod weevil, cutworms, diamondback moth …

Station 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…

Bertha armyworm near economic thresholds

…by 50%. Bertha armyworm larvae tend to eat leaves first, but will feed on stems and pods if plants drop their leaves before the larvae are mature. Mature bertha armyworm….

Insect update: Lygus, bertha

…decide to spray, consider spraying only the patch. These are likely all bertha armyworms, showing the variation in color that can make identification a challenge. Mature bertha armyworms come in…

Bertha 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…

Bertha armyworm scouting tips

These are all bertha armyworms, showing the variation in color that can make idenfication a challenge. The number of bertha armyworm larvae on a farm last year is not a…

Bertha 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…

Bertha armyworm in 2014

Canola Watch Live! had two key agronomy messages with regard to bertha armyworm management in 2014: 1. Lower canola prices will mean higher thresholds for bertha armyworm. See this relationship…