Canola can lose flowers to many stresses, including insects, heat, heavy rain, and late herbicide application. Canola plants that lose flowers can recover without a yield penalty — or not much of one — if conditions improve by early to mid flower. The chart above shows that canola plants produce far more flowers than pods, providing a cushion to compensate for flower loss early. The plant can utilize the later flowers if needed. If not needed, these late flowers won’t likely amount to much.
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Map of the Week – High lows
Click here for a PDF of the map. *Thanks to AAFC’s Agroclimate Information Service for this custom map. Even the lows have been very warm in some areas across the Prairies. The area of Western Manitoba where CCC agronomy specialist Justine Cornelsen lives had a low(!) of 24°C on July 7, the day represented in…
Top-dressing at early flower
Late sulphur top up. The ideal time for a sulphur top up is any time before flowering, but a top up at early flowering may pay off if plants are showing signs of sulphur deficiency. Late nitrogen top up. The ideal time for a nitrogen top up is before the 5-leaf stage of canola. This…
Top dressing at early flower
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Canola can recover from hail up to 20% flower
Canola hit with light hail at up to 20% flower may recover with only minimal to moderate yield loss. Plants will flower longer and compensate. However, canola that flowers longer in response to hail may be at increased risk of sclerotinia. Hail damage also allows a point of entry for diseases such as alternaria black…