The swath timing decision becomes more difficult in crops with plants at multiple stages of growth. Here are some tips to help with the swath decision on these fields…
Swath timing
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Earliest canola in southern Alberta and here and there across the Prairies will be close to swath timing in the next week or two. Many of these early fields are not looking good, with patchy emergence, uneven emergence and short stature due to moisture stress. The swath timing decision becomes more difficult in crops with plants at multiple stages of…
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With light frost in the forecast, crop left standing will still have a chance to mature further and yield more. A heavy frost will lock in high green counts and likely increase yield loss with pod splitting and pod drop. Swathing before the heavy frost event may prevent this green lock, but the crop needs to dry down to a…
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This time of year, mature canola seeds can take a long time to turn brown or black. Growers wondering why seed colour change is taking so long may want to check the fields again and look for these other signs of maturity…
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Crops left standing for straight combining could face high losses if growers change their mind and choose to swath after the crop has reached 80% seed colour change. If a field that ripe must be swathed, cut in very moist conditions (rain or heavy dew) to limit shattering as much as possible. The final decision on whether to swath or…
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The ideal swath timing is when 60% of seeds on the main stem are showing some colour change from green to brown. However, various factors complicate the swath timing decision, including frost and uneven crops due to hail. A few other scenarios surfaced this week, including late starts, disease and lodging (shown above)…
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Swathing too early and in hot windy conditions can contribute to high levels of green seed. Cutting canola in hot conditions leads to rapid dry down and desiccation, which doesn’t give chlorophyll time to clear from immature seed. Waiting until less mature seed is at least firm to roll between thumb and forefinger will help minimize yield reductions from early…
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The swath decision becomes more difficult in crops with plants at multiple stages of growth. For example, if some plants are at 60% seed colour change (SCC) on the main stem and other plants are still flowering, growers may want to hold off on swathing. Or if plants are large with many secondary stems, the main stem may be at…