Canola Watch – May 26, 2016

May 26, 2016

MAY 26 QUIZ – EARLY-SEASON DAMAGE

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Five damaged plants. Can you ID the cause? Take our quiz to find out…

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DAMAGE ID: CUTWORMS OR SEEDLING DISEASES?

Cutworms clipped this plant. The investigation included digging to discover cutworms present and observation of the plant damage, which looked like biting not rotting.

Cutworms and seedling diseases are fairly common causes for toppled or missing plants this time of year. Here are a few tips to help you distinguish which is at work….

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TOP 10 THINGS TO LOOK FOR AFTER EMERGENCE

Crucifer and striped flea beetles are feeding together in this crop. Credit: Brent Wiebe

Flea beetles are just one thing to look for while scouting one to three weeks after seeding.

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WEED MANAGEMENT TIMING — SCENARIOS

This field is seeded, as you can tell by the seeds sitting on the surface, but it faces pretty still weed competition. A pre-seed burnoff would have been preferable in this situation.

Early weed control is preferred because nutrient and moisture taken up by weeds means less for the crop. Weeds emerging before the crop also compete for sunlight, which is an issue if those weeds canopy over the crop. Ideally, growers want crop emerging in a clean field so it can get ahead of the weed competition. That is why pre-seed and early in-crop control are so valuable.

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SPRAYING BEFORE A RAIN

If rains are coming and you're spraying, keep in mind the required rainfall interval for the product you're applying.

The rainfast requirement varies by product. Here are required intervals for each common product used in HT canola systems…

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TIPS FOR SPRAYING IN THE WIND

Herbicide drift injury on canola. Drift can be costly on your own farm and especially awkward and costly if it carries to a neighbouring farm.

How do you spray weeds in a timely fashion when every day seems too windy? Too windy, according to the Guide to Crop Protection, is wind above 15 km/h. Here are tips for spraying in the wind…

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PRECIPITATION MAPS: HOW MUCH? HOW LITTLE?

Precipitation over the past week has been a big help for growers in many regions of the Prairies. But not all…

This map shows precipitation in the past week. To get the latest map from WIN, go to http://weatherfarm.com/weather-maps/

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HELP FOR THE RESEEDING DECISION

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8 STEPS TO MAKE THE RIGHT FLEA BEETLE DECISION

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Here is how to make the flea beetle spray decision….

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COMING EVENTS

SaskCanola pancake breakfast — June 17 in Regina
Manitoba canolaPALOOZA — June 21 in Portage
Alberta canolaPALOOZA — June 28 in Lacombe

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Canola Watch is a free, unbiased, timely and research focused weekly newsletter from the Canola Council of Canada Crop Production Team

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Upcoming Events

John Mayko's canola crop walk

Speakers include Dan Orchard, Kelly Turkington, Breanne Tidemann and more
Aug 21
North of Mundare, Alberta

Webinar: Getting your farm certified for EU exports

It’s a simple and free process that will expand your market access, and most Canadian producers already qualify. Please join us for a webinar to learn more about this opportunity.
Aug 22

canolaPALOOZA late season crop walk

Join us for one last look at the 2019 canolaPALOOZA plots
Aug 28
Lacombe, Alberta

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