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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Science

Thicker stands improve weed management

Key practice: Higher seeding rates mean a more competitive crop, which can translate into higher yields and lower in-crop weed management costs. Key research: Harker, K.N., Agriculture and Agri-Food Canada (AAFC), et al. “High-Yield No-Till Canola Production on the Canadian Prairies.” Canadian Journal of Plant Science. (2012). Harker, K.N., AAFC, et al. “Seeding Rate, Herbicide...
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Science

Reduce losses while combining

Key practice: Ground speed and mechanical adjustments to the combine can reduce harvest losses and increase yields. For growers who want to try straight combining, start with one field with uniform maturity and high yield potential. Key research: Gulden, R.H., University of Manitoba, et al. “Evaluation of Harvest Losses and Their Causes in Canola Across...
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Science

Target seven to 10 plants per square foot

Key practice: Target a population of at least seven plants per square foot to maintain yield potential for canola. This target will allow for some plant mortality due to post- seeding stresses without dropping below the minimum five plants per square foot required for canola yield potential. Key research: Leeson, Julia, Agriculture and Agri-Food Canada...
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