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


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


Upcoming Events

canolaPALOOZA late season crop walk

Join us for one last look at the 2019 canolaPALOOZA plots
Aug 28
Lacombe, Alberta

2019 Agriculture Update for Professionals Seminar

Alberta Canola is proud to support these training opportunities for accountants and lawyers working with farm clients.
Oct 28 - Nov 6

2019 Powering Your Profits Tour

A day of canola agronomy, marketing management and more!
Nov 19 - Nov 28
12 locations across Alberta,

Join our mailing list to receive important news and event updates!

Subscribe to our newsletters