Traditional canola yields in the 1980s and 1990s prior to the commercialization of GM canola were 22-25 bushels per acre.
All of the canola grown in Canada is now herbicide tolerant. Most of the varieties that are herbicide tolerant have been created through genetic modification, but a small percentage of the market is from varieties developed by mutagenesis. The mutagenic varieties account for 6-8% of the market. There is no longer any non-herbicide tolerant canola in Canada.
In the past three years, the Canadian averages for canola yields have ranged between 35 and 40 bushels per acre.