Yield drops with fewer than five plants per square foot

November 13, 2015

KEY PRACTICE: Analysis of 35 canola seeding rate studies shows that hybrid canola can achieve its yield potential when at least five plants per square foot survive to harvest.

PROJECT TITLE, LEAD RESEARCHER: “Determining the economic plant density in canola,” 2009, Steve Shirtliffe, University of Saskatchewan

GROWER ORGANIZATION FUNDER: Alberta Canola, SaskCanola


This meta-analysis of 35 previous canola seeding rate studies concluded that crops with fewer than 50 plants per square metre (about five per square foot) almost always have yield.

The objective of this study was to conduct a meta-analysis of canola seeding rate and plant population trials to determine the optimum seeding rate and plant population. A meta-analysis statistically combines the results of several studies to increase the inference of the results.

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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