Response of Canola to Low Plant Populations and Evaluation of Reseeding Options

Researcher: Anne Kirk and Blaine Davey, Western Applied Research Corporation, Sherrilyn Phelps, Saskatchewan Ministry of Agriculture, North Battleford, SK, Eric Johnson, Agriculture and Agri-Food Canada, Scott, SK, Steve Shirtliffe, Department of Plant Sciences, University of Saskatchewan, Cecil Vera, Agriculture and Agri-Food Canada, Melfort, SK, Chris Holzapfel, Indian Head Agricultural Research Foundation, Indian Head, SK and Bryan Nybo, Wheatland Conservation Area, Inc., Swift Current, SK

Project Code: CARP SCDC 2010-7

Final Report:

Summary: Researchers in Saskatchewan initiated a three-year project in 2010 to try to answer the question of how producers could respond when faced with low plant populations in hybrid canola due to poor stand establishment, spring frost, or pest damage. Although hybrid canola is able to compensate for low plant populations, knowing the yield response to low plant populations would assist producers with decisions for reseeding. Overall, the study found that with a plant stand of 20 plants/m2 or less, reseeding in early June to hybrid canola provides a yield and economic benefit compared to leaving the stand of low-density canola. However, if conditions do not allow for reseeding to occur in late May or early June, producers are not recommended to reseed to canola.

Click the links below to download a short version of the report, the full detailed long version of the report, or the related Canola Digest PDF.

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