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Frost hit many areas of the Prairies on repeated nights over the past week. Emerged crop is at risk, especially delicate cotyledons. Wait 3 or 4 days, then look for……
May 25, 2011 - Issue 9
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Peace (B.C. and Alberta): Canola seeding ranges from half to two thirds complete in the east, to 95% complete in the west. Most areas had some rain in the past……
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It can take a few days for young canola plants to recover after a frost. Even if damage looks severe, give the crop a few days to see if it will recover before considering whether to reseed. Weeds also need to start growing again after a frost before a spray will provide strong efficacy… -
Early weed control is the most economical. It reduces weed competition for nutrients and moisture, and improves yield potential for canola. In-crop weed control should occur as early as possible. The following article provides application windows for Clearfield, Roundup Ready and Liberty Link matching herbicides…
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Take a few extra minutes each day to scout emerged crop for insect damage. It could be a busy spring for flea beetles, and cutworm damage is already reported in parts of Alberta… -
Growers wondering when is too late to seed canola should consider these 4 factors: maturity of the variety, average date of first fall frost, crop insurance deadlines, and profit potential of option crops… -
If growers have to seed by plane because the field is too wet for a broadcast floater, that means it’s probably also too wet for weed control, fertilizing and harrowing — each important to a profitable broadcast canola crop…
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If planning a top up fertilizer application, nitrogen must be available before the 5-leaf stage of the crop to provide the largest yield benefit…
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Blackleg infection from the cotyledon to 3-4 leaf stages is what can cause yield loss. If growers see blackleg lesions on cotyledons or leaves early in the season, then a fungicide may be warranted to stop further infection and limit yield loss…
