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With cool temperatures, flea beetles have moved down to the stems and undersides of leaves to feed. Thresholds for stem feeding are lower than thresholds for leaf feeding, so make sure to scout the whole plant. A plant cut off represents 100% leaf area loss for that plant…
Canola Watch Posts
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Small and vulnerable canola plants face many threats during their first three weeks. The crop may need your protection to get through these stages with its top-end yield potential intact. Canola growers are encouraged to walk their fields a couple times a week — or more — until plants are firmly established and growing strong…
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With most canola seeded and starting to emerge across the western Prairies, scouting becomes a top priority. This is a canola crop’s most vulnerable stage, and through scouting you can……
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Peace (B.C. and Alberta): Seeding is 90-95% complete. Emergence is generally good, but some canola seed is stranded in dust and waiting for rain. Flea beetles are all over the……
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Canola is most fragile during the first 21 days after emergence. The small plants are highly susceptible to flea beetles, cutworms, seedling diseases, weed competition and various other threats. Scouting may be required every day for at-risk crops, especially if a threat such as flea beetles seems to be building. At a minimum get out to each field a couple… -
You can often tell the condition of a crop the day after a frost. It may have survived without any damage, in which case you may not have to worry. Or, if most of the plants are black and bent over, it may be clear that serious losses have occurred. But does that mean the field should be reseeded? The… -
If wild oats are the one problem weed in a Liberty Link canola field, one option is to apply a grassy weed product (Centurion or Select) alone while waiting for emergence of other weeds prior to the Liberty application. But walk the field and take a close look at the weed spectrum before making this decision to ensure that delaying…
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In cool cloudy conditions, weed growth is slower and herbicide efficacy may be lower. Cool humid conditions are also prime conditions for herbicide injury to the crop. The leaf cuticle (waxy layer) is thinner allowing more rapid uptake of herbicide into the plant and cool conditions reduce the speed at which the herbicide is inactivated in the crop. This can…
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With fields too wet to seed, growers in Manitoba and parts of Saskatchewan may be tempted to leave volunteer canola and harvest it as a crop. There are many reasons to avoid this, and very poor yield potential is just one of them…