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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 www.youtube.com/canolacouncil…
Canola Watch Posts
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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… -
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 can damage pods and increase the shattering risk for those pods. Before jumping the gun and swathing too early, take these decision-making steps… -
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… -
Lygus schmygus. Sweep net counts approaching thresholds have been reported in many areas across the Prairies, but high counts may not require a spray if canola is growing vigorously and has good moisture conditions. Low bertha. Trap counts for bertha armyworm adults are fairly low across the Prairies, except for a few hotspots in central Alberta. This suggests a minimal… -
This map from StatsCan's Crop Condition Assessment Program uses NDVI satellite imagery to show crop growth. This map compares growth to July 21 this year with the same period last year. Yellow indicates that growth is about the same as last year. Light brown is behind. As you can see, crop growth for most of the western Prairies is around… -
Test your worm ID skills with this week's quiz…
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Threshold tables for lygus suggest, for example, that if canola is $12 per bushel and spray costs $8 per acre, the threshold at the early pod stage is 5 lygus adults or late instar nymphs per 10 sweeps. Current thinking is that 5 lygus per 10 sweeps (0.5 per sweep) is too few to warrant a spray, and that the…
