Insects

Before spraying, make sure the worms feeding on your canola are actually the species you think they are. Bertha armyworm, diamondback moth larvae and

Economic spray thresholds are calculated based on individual species. We don’t have scientific evidence to combine thresholds, but where an “additive” effect of multiple

Thresholds for lygus bugs and cabbage seedpod weevil, for example, are based on a specific sweep net technique. If you’re not doing a complete

Lygus bug numbers are high in some fields, but remember that as pods harden and get leathery, lygus will not be able to penetrate

Malathion CANNOT be used to treat bins where canola will be stored or to treat canola as it goes in to storage.

Canola growers in pockets across the Prairies are seeing a rise in bertha armyworm feeding. Check your fields, know the economic thresholds, and be

Growers in some areas are spraying for late season insects, including lygus, bertha armyworm and diamondback moth. Make sure to scout.

The pre-harvest interval is the number of days that must pass between the last application of a pesticide and cutting of the crop. Cutting

Diamondback moth and bertha armyworm numbers are fairly low so far this year. Slugs and aphids are a concern for a couple canola growers.

Cabbage seedpod weevil adults have arrived and are feeding on volunteer canola at the bloom stage in southern Alberta and southwest Saskatchewan. Weevils move

Lygus bugs are feeding on canola in the Peace River region and in some parts of central Alberta. Insecticide control at the bud stage

Canada’s crop protection rules allow growers to tank mix two products as long as they are both registered for the crop in question and