Canola Aphids

I remember that when we grew canola back in the early nineties it seemed like we had to spray for aphids a fair amount. In the past few years we have had limited acreage but we haven’t seen a whole lot of aphids. We are seeing some aphids now in canola. Fields I’ve been in lately weren’t at treatable levels but we need to be on the lookout, and treat if needed.

Here ‘s a photo I took recently of an infested stalk.

Treat seedling and rosette stage plants if populations exceed 5 aphids per leaf or15% infested plants.

Treat bud and early bloom stage if infestation exceeds 15% infested stalks (racemes).

Late flower and pod stage – Do not treat.

During bloom apply pesticides early in the morning or late in the day to avoid harming bees.

 

 

 

A little natural predation going on here, ladybugs love aphids.