Return to Canola Council Home
Test your disease ID knowledge. Match the disease to these four images…
Canola Watch quiz — pre-swath disease check
August 10, 2016
Diseases
-
-
Swath timing and disease
August 10, 2016
With blackleg, sclerotinia stem rot and clubroot, base the swath timing decision on healthy plants that will contribute to yield. One exception where early swathing could provide an economic benefit is the case of severe alternaria black spot (shown)…
-
Pre-harvest scouting: 8 diseases
August 4, 2016
Check patches of pre-mature ripened canola to identify the cause. It could be blackleg, clubroot, sclerotinia stem rot (pictured) or something else entirely. Here’s how to identify the major diseases of canola as fields get close to swathing stage…
-
Aster yellows: What does it look like?
August 4, 2016
Aster yellows is a phytoplasma infection that causes misshapen pods and flower buds. Most fields in most years have less than 1% infection, which is not an economic level of loss…
-
Scouting those sickly patches
July 27, 2016
Patches that seem to be maturing early while the rest of the crop is still green do warrant closer inspection. With all the rainfall in some areas, die-off due to excess moisture could be the prime suspect — but check anyway. It could be disease…
-
Lesion ID
July 20, 2016
Learn to tell the difference between common lesion-causing diseases — blackleg, sclerotinia stem rot and alternaria black spot…
-
Aster yellows or midge or thrips?
July 20, 2016
Misshapen sack-shaped pods are often the result of aster yellows…
-
July 13 Quiz – Lesions
July 13, 2016
How well do you know your canola leaf lesions? Take the quiz to find out! (Photo credit: Angel Hewson)…
-
Check crowns and primary roots
July 13, 2016
While scouting canola fields at flowering and podding stages, dig up a few plants in each field and look at the crown and primary root. If the crop has disease symptoms, compare healthy and unhealthy plants. Even if the crop has no outward symptoms, dig up a few plants anyway. Early infection may be present even if the plant shows…