Home Crop Monitoring Canola School: New online tools support blackleg management

Canola School: New online tools support blackleg management

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The Canola Council of Canada (CCC) has lately up to date a number of agronomy graphics, together with the life cycle of blackleg.

“We’ve had different life cycles in the past, but we wanted to update it and provide a little bit more information kind of in a one shot,” says Justine Cornelsen, agronomy specialist with CCC.

On this Canola College episode, Cornelsen talks about how blackleg impacts canola, and the way the graphic explains the crucial window for scouting for blackleg.

“Through some of our recent research, we’ve really dialled into that cotyledon to two-leaf stage,” says Cornelsen. “If you can protect your canola plants at that stage from a blackleg infection, you shouldn’t have to worry about any sort of yield loss; you’re really going to reduce that pressure.”

The primary manner of defending the crop from early season blackleg an infection is thru genetics — an efficient main gene will cease the pathogen from getting into the plant at this stage, says Cornelsen.

If the most important gene of the variability isn’t efficient in opposition to blackleg, then you definitely begin to depend on quantitative resistance, says Cornelsen, which is able to gradual an an infection, however not fully forestall in opposition to yield loss. Systemic seed therapies, which is taken up by the plant, will shield till in regards to the one-leaf stage.

“Lastly, and this is one of our older recommendations, is a foliar fungicide application,” says Cornelsen, which must occur extraordinarily early for it to repay by harvest.

Catch the complete interview between Cornelsen and RealAg subject editor Kara Oosterhuis, story continues beneath video:

One other useful gizmo that CCC has unveiled this yr is a yield-loss calculator, that Cornelsen says is one other thrilling part popping out of Canadian Agricultural Partnership analysis funding, based mostly on up to date work from the College of Alberta. The unique work for the yield-loss fashions, was about 5 years in the past.

“We don’t see much loss at really low disease severity ratings, so if we’re only getting a rating of one on our zero to five scale, we don’t see any yield losses there,” says Cornelsen. “It’s when you have disease severity ratings for blackleg over that one, where you start to see yield loss.”

Cornelsen says that a lot of farmers and agronomists did a terrific job of scouting final harvest, however have a troublesome time evaluating between blackleg, sclerotinia, fusarium wilt, or a brand new illness, verticillium stripe.

Blackleg appears to be the silent yield-robber in canola, says Cornelsen and “it doesn’t take a lot of pressure to take away that yield.” It’s a stubble-borne and air-borne illness, so growers want to permit time between canola crops for the illness strain to subside.

CCC hopes that by offering up to date data in a graphic, growers will be capable of higher establish the illness, and, together with the yield-loss calculator, understand the injury it causes.

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