Use seed treatment to minimize early disease

December 1, 2014

KEY PRACTICE: A registered seed treatment with multiple fungicide active ingredients can minimize the threat of seed and seedling diseases. Seeding early, shallow and with good seed to soil contact for quick emergence also helps prevent early disease infection. Start field scouting 10 to 14 days after seeding.

KEY RESEARCH: Hwang, S.F., Alberta Agriculture and Rural Development (AARD). “The Effect of Seed Size, Seed Treatment, Seeding Date and Depth on Rhizoctonia Seedling Blight of Canola.” Canadian Journal of Plant Science (2014).

Hwang, S.F., AARD. “Reducing Seedling Blight to Improve Stand Establishment in Hybrid Canola.” Canola Agronomic Research Program (CARP) project (2007-1).


Canola is vulnerable to a number of seed and seedling diseases. A registered seed treatment with multiple fungicide active ingredients can minimize this threat. While early seeding is best for yield in general, shallow seeding and good seed to soil contact allow the crop to establish as quickly as possible, making it less susceptible to disease. It’s also important to start field scouting 10 to 14 days after seeding, looking for diseased seed as well as dying or dead plants.

Canola seeded too deep is at higher risk of seedling diseases. Deep seeding requires a long hypocotyl for the plant to reach the soil surface, which exposes more of the plant to soil-borne disease pathogens. Deep seeding also extends the days to emergence, which means the plant is at its vulnerable stage for longer.

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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