Is this insect a friend or foe? Try your ID skills on these less-common insects you might find in canola fields.
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.
A quick guide to step by step scouting and decision making
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…
canolaPALOOZA — June 23, Lacombe, AB
International Rapeseed Congress – July 5-9, Saskatoon, SK.
Crop diagnostic school — July 28-30, Outlook, SK.
Crop diagnostic school — July 7-9 and 14-17, Carman, MB
Read more for registration links
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.
When scouting, take time to check the plant stand. The video above, from 2013, provides some good tips on how to count.
Look for blank areas and also look for thin areas. The plant stand may be adequate in these thinner areas or thinner rows, but a little digging may provide clues on how to improve the drill or whatever else may have caused the problem. Taking these steps this year will help improve establishment in a drier year when mistakes will have a much larger impact on establishment. Sample good areas and bad areas to compare.
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.
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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