Science

Harvest prep starts in the spring

Studies have found that lower harvest losses in canola are associated with higher yield potential, especially when straight combining. This could be attributed to the additional strategies high-yielding growers carry out earlier in the season, such as seeding early, early weed control and frequent field scouting.
Key practice: Reducing harvest losses starts with strong crop establishment, adequate fertilization, early weed control and frequent scouting. Key research: Liu, C., Agriculture and Agri-Food Canada (AAFC), et al. “Evaluation of On-Farm Crop Management Decisions on Canola Productivity.” Canadian Journal of Plant Science (2014). Watson, P.R., Alberta Research Council, et al. “Canola Harvest Management Study.”...
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Science

Protect canola from early insect feeding

Key practice: Use seed treatments and early in-crop treatments, if scouting deems them necessary, to protect young plants from flea beetles. Key research: Hallett, Rebecca, University of Guelph. “Assessing the Impact of Swede Midge on Canola Production in the Prairies & Ontario.” Canola Agronomic Research Program (CARP 2005-14). Olfert, Owen and Elliott, Bob, Agriculture and...
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Science

Rotate crops for blackleg and clubroot management

Key practice: Increasing the number of years between canola crops in the rotation reduces incidence and severity of blackleg and clubroot in fields. Key research: Kutcher, H.R., University of Saskatchewan, et al. “Blackleg Disease of Canola Mitigated by Resistant Cultivars and Four-Year Crop Rotations in Western Canada.” Canadian Journal of Plant Pathology (2013). Peng, G.,...
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Science

Wait for 60 percent seed colour change

By delaying swathing until 60 to 70 percent seed colour change on the main stem, canola fields have been shown to produce higher seed weights, greater oil content, lower green seed percentage and a higher grade.
Growing spring canola in the moderately short growing season of the Canadian Prairies always tests the tipping point between maximum maturity time (to produce maximum yield) and avoiding the first frost. With growers taking on more acres than ever, the time crunch at harvest can make it tempting to begin swathing early. But the yield...
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Science

Apply enough nitrogen

Key practice: Use soil tests, ideally taken at consistent locations (GPS helps), and base rate decisions on soil test recommendations. Key research: S.A. Brandt, Agriculture and Agri-Food Canada (AAFC), et al.“Seeding rate, fertilizer level and disease management effects on hybrid versus open pollinated canola (Brassica napus L.)” Canadian Journal of Plant Science, 2007. R.E. Blackshaw,...
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