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Stem infections: How to tell them apart
…blackleg infection, consider changing to a different major resistance (R) gene or source of resistance. Clip stems around ground level to check for blackleg. Blackleg lesion at the crown, with…
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Canola Community Connections
…identification before the growing season. The events will feature four sessions (40 minutes each) examining four major canola diseases in the Prairies: blackleg, clubroot, sclerotinia stem rot and verticillium stripe….
Read moreQuestions of the week
…for stubble testing to identify blackleg races, which helps with blackleg resistance-gene choice. THIRD: Select based on yield or traits that offer a price premium. LAST: Choose traits that are…
Read moreBlackleg and tight rotations
…rotation, consider rotating varieties on those fields. Many genes are responsible for blackleg resistance in canola and at least 16 described virulent blackleg races are currently found on the Prairies….
Read moreIs that sclerotinia or blackleg?
…response are different depending whether the problem is sclerotinia or blackleg. Here’s how to tell the difference: Blackleg: Symptoms showing up in Manitoba at this stage of the season are…
Read moreBlackleg in eastern Manitoba
…management decisions for future years. Blackleg lesion on leaf in eastern Manitoba canola field. Source: Anastasia Kubinec, Manitoba Agriculture, Food and Rural Initiatives Blackleg damage on canola leaves, Manitoba July…
Read moreChoose the right cultivar for each field
…list of cultivars with clubroot resistance. Blackleg resistance. In fields with yield-robbing levels of blackleg, use cultivars with a blackleg resistance group (RG) that works against the common blackleg races…
Read moreQuestions of the Week
…significant number of plants but at generally low severity. Though less shocking visually than aster yellows, sclerotinia and blackleg are costing significant yield in some fields: high crop density and…
Read moreBlackleg heavy in parts of Manitoba
Cross section of stem with basal blackleg lesion. Source: Anastasia Kubinec Growers are encouraged to check maturing crop for blackleg infection. It’s too late for fungicide to provide any benefit,…
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