KEY PRACTICE: Optimum seeding depth is ½” to 1″ below the press wheel furrow. This reduces days to emergence and improves plant population and uniformity, which produce season-long benefits.
KEY RESEARCH: Harker, K. Neil, Agriculture and Agri-Food Canada (AAFC). “Seeding Depth and Seeding Speed Effects on No-Till Canola Emergence, Maturity, Yield and Seed Quality.” Canola Journal of Plant Science (2012).
Harker, K. Neil , AAFC. “Factors Influencing Canola Emergence.” Canola Digest Science Edition (2013).
Canola growers who consistently seed at a shallow depth of 1.2 to 2.5 cm (½” to 1″) can reap significant benefits. These include improved plant density, superior competition with weeds, decreased days to emergence, increased canola ground cover, decreased days to flowering and maturity, decreased green seed levels and higher yields.
Shallow seeding of canola into a firm, moist, warm seedbed helps ensure rapid, uniform germination with a high percentage of emergence. Deeply sown seeds require several days longer to emerge and have reduced survival rates due to the insufficient stored energy in canola required to push cotyledons to the surface.Open the PDF to read the entire research summary from the 2014 Science Issue of Canola Digest
Visit the Canola Research Hub website to search the database of grower funded research