Canola Digest Science 2014 Issue
Science

Earlier seeding generally increases yield

Early spring seeding typically benefits canola yield and quality. An early planting date enables the crop to take advantage of good spring moisture, avoid some heat stress at flowering, and reduce the risk of fall frost damage. Key practice: Crops seeded early (in late April or early May, depending on the region) will out-yield canola...
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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

Seed at 1/2″ to 1″ deep

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...
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Science

Micronutrients: Take care of macros first

Key practice: Economic response to micronutrient applications is rare for canola in Western Canada. However, if growers apply recommended rates of nitrogen, phosphorus and sulphur and yields are not increasing, growers may want to check the micronutrient situation. Key research: Karamanos, R.E., Westco Fertilizers, et al. “Canola response to boron in Canadian prairie soils,” 2003,...
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