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Disease watch: Blackleg and wirestem
Early blackleg infection has been detected this spring. Moist conditions, good stands and tight canola rotations are contributing to blackleg and wirestem (rhizoctonia) in some canola fields. You can’t…
Read moreSearch Results for: blackleg
How to identify verticillium stripe
…throughout the plant. This gives the stem cross section a greyish colour that is easily confused with blackleg. We have two tips to distinguish the pathogens: With blackleg, stem tissue…
Read moreBlackleg symptoms found on two-leaf canola
…risk of serious blackleg infection. Here are factors that increase the blackleg risk: —Tight canola rotation —Using the same variety many times in the rotation —Yield loss to blackleg in…
Read moreLow levels of blackleg can drop yields
…to clip stems may reveal a widespread blackleg issue, for example. Ongoing research by Stephen Strelkov with the University of Alberta suggests that even low-severity blackleg — stem damage ratings…
Read moreHow to tell blackleg from sclerotinia stem rot
…basal blackleg lesion. Source: Anastasia Kubinec Another look at sclerotinia infection. Source: Anastasia Kubinec Some regions are reporting higher rates of blackleg and most regions are seeing sclerotinia stem rot…
Read moreSentinel Fields: Blackleg on residue at Enchant, AB
…to find some blackleg pycnidia on canola residue from 2016. We will have to keep an eye out for the disease this year. Go to blackleg.ca for a comprehensive look…
Read moreHow to tell blackleg, sclerotinia and clubroot apart
…find it almost completely black. Blackleg. When blackleg is severe enough to cause yield loss, the plant will have irregular, knotty, woody cankers at the base of the stem. To…
Read moreBlackleg video quiz for CCA credit
…the blackleg pathogen populations compare to the current Canadian resistant varieties being used? High diversity in the blackleg pathogen population; narrow diversity in resistant varieties. Low diversity in the blackleg…
Read moreDisease ID tips for pre-harvest scouting
…to cause major yield loss. Clip stems around ground level to check for blackleg. Credit: Justine Cornelsen Blackleg disease rating: 3 Blackleg rating scale Clubroot. Above-ground symptoms, including wilting and…
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