August 7, 2014 – Issue 18

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  • Four the week

    Helicopter SW Man 2014 small

    Blackleg close up. A new CCC video takes you down to the microscopic level to see how blackleg infects canola and how resistance works.

    Straight goods. When straight combining canola for the first time, start with one or two fields chosen for high uniformity, good stand, no weeds and lower frost risk.

    Peer pressure. Do your own insect risk assessments. Bertha armyworm numbers are generally low, but isolated hotspots can pop up. Don’t be caught by regional complacency. Lygus seem to be plentiful in some regions this week, but that doesn’t mean YOU need to spray.

    Hail to pods. Before jumping the swathing gun to save pods rattled by late-season hail, consider the condition of those pods lower in the canopy that will contribute more to yield.

    *CCC agronomy specialist Angela Brackenreed shot the photo at the top while on a helicopter tour of western Manitoba last week. Effects of extreme water levels through May and June are evident.


  • Map of the week

    GDD Base 0 August 4

    Here are the growing degree days (Base 0°C) for the Prairies from April 1 to August 4, 2014.


  • August 7 Quiz

    sclerotinia stem rot lesion shredding small

    Pre-harvest scouting is upon us. How are your pre-harvest disease ID skills? Here is a quick test.


  • New CCC video: Blackleg Disease and Resistance Management

    A vivid new video from the Canola Council of Canada zooms in on blackleg, showing how the canola disease infects a plant, how it spreads throughout a field, and what growers can do to protect blackleg resistance traits. The video, called “Blackleg Disease and Resistance Management,” is posted at


  • Cut later for higher yields

    Summary results pooled for both 3 and 5 lb/ac seeding rates at all locations based on similar trends observed. Straight cut treatments at 10 of 12 locations produced relative yield of 107% vs 30-40% SCC.

    Cutting canola after 50% seed colour change will increase crop yields because side branches have longer to fill and average seed size for the whole plant is larger.


  • Best headers for straight combining canola

    Biso header for straight combining canola

    Specialty headers designed to straight combine canola seem to provide an improvement over standard straight cut headers. These specialty headers have the cutterbar out in front of the reel to catch seed that drops on impact from the reel bats.


  • Late season hail: Damaged pods and swathing timing

    These white spots on pods and stems are hail damage. These plants and seeds should be fine, but more intense hail could have damaged and bruised seed.

    Late season hail can damage pods and increase the shattering risk for those pods. Before jumping the gun and swathing too early, take these decision-making steps….


  • Insect update: Lygus, bertha, swede midge, CSPW

    Lygus hotspots: Lygus numbers are high in some regions, with reports of 70+ per 10 sweeps in some fields in central and northern Alberta. Some fields will warrant a spray, but seeing the plane next door does not mean all canola in the area should get sprayed. Assess each field.

    Bertha armyworm hotspots: Berthas are a very low numbers in most areas, but there are a few hotspots. Bertha numbers can be high in one field, or even in areas within a field, and not a threat at all in fields close by. Assess each field.


  • Coming events

    Read more for summer tours and other canola-related events across the Prairies.


Canola Watch