Protect canola from early insect feeding

December 1, 2014

KEY PRACTICE: Use seed treatments and early in-crop treatments, if scouting deems them necessary, to protect young plants from flea beetles.

KEY RESEARCH: Hallett, Rebecca, University of Guelph. “Assessing the Impact of Swede Midge on Canola Production in the Prairies & Ontario.” Canola Agronomic Research Program (CARP 2005-14).

Olfert, Owen and Elliott, Bob, Agriculture and Agri-Food Canada (AAFC). “Detection, Surveillance and Management of Weed, Insect and Disease Pests that Threaten the Economic Viability of Crop Production and the Environmental Health of Prairie Agro-Ecosystems.” Canola Digest Science Edition (2013).

Soroka, Julie, AAFC. “Mitigation of Risk to Canola from Spring Flea Beetle Injury.” Canola Digest Science Edition (2013).


Flea beetles and cutworms are the most common early-season insect pests of canola. Despite canola’s ability to branch out and recover from thinned stands, early insect feeding will reduce canola biomass and delay maturity, increasing the risk of lower yield and quality. The key to minimizing damage is early detection and the use of an insecticidal seed treatment to control flea beetles.

Rapid emergence and early growth is also very important to offset insect feeding, along with frequent scouting for feeding damage from germination through the early rosette stage. This will allow growers to intervene before significant plant losses occur.

Open the PDF to read the entire research summary from the 2014 Science Issue of Canola Digest

You can also read the 2014 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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