Aim for uniform stands

December 1, 2014

KEY PRACTICE: Uniform stands, with the same number of plants per square foot across the field and with plants at the same growth stage, are proven to increase yields.

KEY RESEARCH: Angadi, S.V., Agriculture and Agri-Food Canada (AAFC), et al. “Yield Adjustment by Canola Grown at Different Plant Populations under Semiarid Conditions.” Crop Science 43 (2003): 1358-1366.

Gan, Yantai, AAFC. “Improving Canola Establishment and Uniformity Across Various Soil-Climatic Zones of Western Canada.” Canola Digest Science Edition (2013).

Yang, C., Gan, Y., AAFC, et al. “Up to 32% Yield Increase with Uniform Canola Stands in Western Canada.” Agronomy for Sustainable Development (2014).


Canola stands with a consistent number of plants per square foot across the field and with plants at the same growth stage produce significantly higher yields. The benefit of a uniform stand is especially evident when overall plant populations are less than ideal or when moisture is limited.

Chao Yang and Yantai Gan of Agriculture and Agri-Food Canada (AAFC) et al published a March 2014 paper in Agronomy for Sustainable Development titled, “Up to 32% Yield Increase with Uniform Canola Stand in Western Canada.” The paper details a three-year Canola-Flax Agri-Science Cluster study in which field experiments were conducted at 16 site-years across the different Canadian Prairie zones to review the impact of stand uniformity on canola pod formation, seed set and crop yield. Each test consisted of the same glufosinate-resistant hybrid cultivar sown at 100, 80, 60, 40 and 20 plants per square metre (approximately 10, 8, 6, 4 and 2 plants per square foot) with both uniform and non-uniform stands.

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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