May 28, 2015 – Issue 11

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  • Five things you need to know about flea beetles

    Here are five important points to help with flea beetle scouting and management:

    1. Flea beetle damage can advance quickly.
    2. Flea beetles will keep eating on cool days.
    3. Spray can be effective on cool days, but not wet days.
    4. Stem feeding can be more damaging than leaf feeding.
    5. Seed treatments are less effective on striped flea beetles.


  • May 28 Quiz — Insect ID

    Rustcolored blister beetle (bugwood-Whitney Cranshaw) 5023093 copy

    Is this insect a friend or foe? Try your ID skills on these less-common insects you might find in canola fields.


  • Flea beetles feasting

    Striped flea beetles. Photo credit: Deanna McLennan

    Flea beetle pressure is quite high in many locations. Spraying may be necessary. If damage was quick and devastating, growers may face a reseeding decision. Early scouting is necessary to make sure the seed treatment provides enough protection.


  • Top 10 things to look for after emergence

    Striped flea beetles. Credit: Denis Pageau, AAFC


  • Help for the reseeding decision — scenarios

    Thin stand small

    When growers have canola stands of fewer than 4 plants per square foot — due to low seeding rates, poor seed survival, insects, crusting, frost, wind, etc. — they grapple with the question whether to reseed. An established canola stand with as few as 1-2 plants per square foot generally has higher economic potential than if were to reseed that crop in June. This population is far below the minimum 4-5 per square foot required to meet yield potential, but a thin stand seeded early has greater economic potential (considering yield, quality and cost of production) than an adequate stand that doesn’t get established until mid to late June.

    However, reseeding may be the better option if…


  • BLOG: Summer storage of canola

    A screen capture of the real-time display for Bin 20 (as of 3:39 pm June 6, 2014)

    The Canola Council, in collaboration with PAMI and the provincial canola grower commissions, is gathering information to help define best management practices for summer storage of canola.

    We do not have enough practical information to answer the question “How does the warm summer air affect the temperature, moisture and potential spoilage of cooled canola?” There was also no way to validate the recommendation that cooled canola should be warmed slowly to reduce the risk of spoilage during summer storage. Nor was there any evidence that “turning” a bin will help even out the temperature distribution in the grain. In May 2014, the Canola Council secured funding for a project to help answer these questions. This blog will follow the progress of this project.


  • How to count plants

    Start counting a week after seeding and repeat a couple of times over the following two weeks. Here’s how…


  • Early in-crop herbicide: More profit with no added cost

    Here are the label stages for in-crop herbicide applications, by HT system.

    Past research has demonstrated an advantage of 3 bu./ac. for controlling weeds at the 1-2 leaf stage of canola versus the 3-4 leaf stage, and a 7 bu./ac. advantage versus 6-7 leaf. At $12 per bushel, that’s $36 to $84 per acre more profit with no added cost. These numbers will be even higher if a preseed burnoff was not completed. Scout fields to determine the number, size and species of that are present in each field before choosing a rate and tank mix.

    Read more for specific timing and options for the three HT systems.


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