When it comes to diseases that rob canola yields, blackleg often doesn’t get the credit it deserves. Many farmers underestimate the significance of blackleg, says Bruce McKinnon, an agronomist with Dekalb in Alberta, in the video below. “Blackleg is a powerful disease that seems to be able to adapt to whatever we throw at it. As we’ve tightened… Read More
Category: Blackleg
With canola swathing underway across Western Canada, now is the time for growers to assess the toll that diseases have taken on the crop. The “what to look for” list at this time includes the main suspects: blackleg, sclerotinia and clubroot. In this episode of the Canola School, Keith Gabert of the Canola Council of… Read More
Syngenta Canada’s foliar fungicide, Quilt, has received approval for an expanded label that now includes control of blackleg in canola crops. Quilt contains two actives for dual modes of action, azoxystrobin (Group 11) and propiconazole (Group 3), and is applied at the rosette stage between the second true leaf and bolting (2 to 6 leaf)… Read More
Is blackleg resistance breaking down in current canola varieties? The only way to really know is to first scout (swath-timing, harvest and post-harvest are all great times to scout) for the disease and confirm infection. Resistant varieties may still become infected, so seeing infected plants in your crop isn’t necessarily cause for alarm, but if… Read More
There’s a lot you can learn from late season scouting of canola. Not only is this prime insect feeding time, it’s also when disease development reaches its peak. Prematurely ripened areas in a field should be a giant red flag to any farmer or agronomist. What are you looking for? It could be sclerotinia, blackleg,… Read More
Here’s a little tidbit for you: if you’re scouting canola at the 2- to 4-leaf stage and spot blackleg lesions it’s already likely too late to spray. What’s more, a fungicide application later in the season is also likely a waste of money and time, even if symptoms are severe, because the yield loss has… Read More
Sclerotinia gets so much attention, you’d think it was the only disease canola succumbed to. While there are many reasons to brush up on sclerotinia management, doing so at the expense of watching and managing for blackleg is a recipe for a slow-building disaster. While canola varieties do have resistance to several strains of the… Read More