When a strong wind blows off a lot of canola flowers, the crop can recover fully by flowering longer. In some cases, flowers may already be fertilized and will produce a pod even if the petals have blown off. Check to see if pods are elongating where flowers blew off. This indicates that the loss of the flower had no effect. Note that wind can possibly increase yield by increasing pollination. And alternatively, wind can cause lodging, increasing plant to plant contact that could make the sclerotinia risk bigger than the yield risk from flower loss.
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Sad- or odd-looking buds, flowers and pods
While scouting for flower staging, canopy moisture and pod-feeding insects, also take a look for deformed buds and growing points, small pale flowers and anything else unusual. Over the years in Canola Watch, we’ve written about all kinds of potential causes for a wide range of symptoms at the reproductive stage. These include: Heat-damaged flowers…
Sclerotinia management: What is 20% flower?
Fungicide to protect the crop from sclerotinia stem rot infection must be applied to petals before infected petals start to drop into the canopy. Petal drop starts after 30% flower, so the best time to apply is at or just prior to 30% flowering to cover as many flowers as possible. This is assuming conditions…
July 2 Quiz – flowers
Does that flower look pale to you?
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…