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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