The majority of the canola green seed problems in Western Canada are usually the result of frost. Even a light frost can fix the green colour by damaging the enzymes that clear the chlorophyll in higher moisture seed, preventing additional clearing regardless of how favourable weather conditions may become…
Frost
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We don’t really know how much frost (temperature, duration) would be equivalent to an application of diquat (Reglone), but we do know that in cool conditions, diquat may not actually work that well…
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Default to waiting. Don’t make a snap decision to swath. Before taking any harvest action, start with this sequence… -
Late season hail can damage pods and increase the shattering risk for those pods. Before jumping the gun and swathing too early, take these decision-making steps:… -
Default to waiting. Don’t make a snap decision to swath. Before taking any harvest action, start with this sequence…
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Spray decisions — when to spray or whether to spray at all — will depend on leaf condition after the snow is gone… -
Default to waiting. Don’t make a snap decision to swath. Before taking any harvest action, start with this sequence…
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Frost on pods can stop plant development and lock in green. It can also cause pods to split. However, a light frost may have no effect at all, and the crop will be better left to mature fully before swathing… -
You have two choices in this situation: Swath now or wait. Swathing now might prevent further seed loss if severe frost damage will soon cause pods to pop open and pedicels to snap. You could have shriveled seeds and high green counts, but that might be better than the potential losses from waiting. But if frost did not kill the…
