Spraying for weevils reduces lygus bugs and increases yield

November 13, 2015

KEY PRACTICE: Managing cabbage seedpod weevils (when they reach thresholds) with a single insecticide application at early flower stage can reduce pod-stage abundance of lygus bugs and may increase yield by an average of 1.5 bu./ac.

PROJECT TITLE, LEAD RESEARCHER: “Management of lygus bugs and seedpod weevil in canola at the farm level,” 2010-14, Hector Carcamo, Agriculture and Agri-Food Canada (AAFC) Lethbridge

GROWER ORGANIZATION FUNDER: Alberta Canola


Cabbage seedpod weevil (CSPW) and lygus bug are both chronic pests of canola in Western Canada. It is important to periodically scout for these insects with a sweep net starting at late bud stage, and also to consult economic threshold charts to determine the need for insecticidal control. The results of this study show there are additional benefits to spraying for weevils at the early-flower stage (at or above the economic threshold).

Open the PDF to read the entire research summary from the 2015 Science Issue of Canola Digest

You can also read the 2015 Science Issue of Canola Digest as a flipbook

Visit the Canola Research Hub website to search the database of grower funded research

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