A report shows overall insensitivity of sclerotinia to three fungicide groups hasn’t changed in a big way between 2010 and 2024 — but shows some sclerotinia populations have been discovered with elevated insensitivity to all three.
Tag Archives sclerotinia
Good news, bad news for fungicides meant to fight stem rot in canola
A report lays out various levels of resistance and adaptation found in disease samples
In disease resistance, sunflowers don’t shine
Practical Research: Insects don’t often hit economic thresholds, but sclerotinia and other diseases do damage
The known insect pests of sunflowers don’t often hit economic thresholds in those crops, but certain diseases can do significant damage.
Pioneer levels up against sclerotinia
Corteva’s new canola hybrid delivers fungicide-equivalent protection
Fungicide-equivalent protection against sclerotinia has long been an elusive target for canola breeders — but Pioneer appears to have cracked the code. The Corteva-owned seed brand released its P617SL hybrid commercially in 2024, and the company says its trial data backs up the fungicide-equivalent claim. While the Canola Council of Canada can’t speak to specific […] Read more
Canola’s least wanted
Experts discuss pests and pathogens canola growers will want to watch for in 2024
Flea beetles pose one of the greatest risks to yields for canola growers in Western Canada. A 2022 survey conducted on behalf of the Canola Council of Canada bore that out. Some 91 per cent of growers who participated in the survey identified flea beetles as the greatest economic risk to their crops. That’s likely […] Read more
Sclerotinia control in canola
Growing hybrid varieties with improved disease resistance and other agronomic benefits can help protect your yields
Reducing and/or preventing yield losses caused by sclerotinia in canola takes a multi-pronged approach, says a research scientist with Corteva Agriscience. Scott McClinchey, a canola breeder based in Guelph, Ont., says farmers can’t change the weather but they do have other measures within their control to help minimize the effect of the disease on their […] Read more
Keep tabs on crop disease risk
Even the occasional rain event during a dry growing season can stimulate a crop disease outbreak
Is there a need for an early-warning system for crop diseases during a dry growing season? Generally, most farmers and agronomists agree with dry or drought conditions the risk of crop disease outbreaks is greatly reduced, if non-existent. And that is true to a large extent. Looking at the classic crop disease triangle, the three […] Read more
And the canola disease surveys say…
The 2020 numbers on blackleg, sclerotinia stem rot, clubroot, verticillium stripe and others across the Prairies
Western Canada’s crop disease specialists have spent the past few months finalizing results from canola field disease surveys executed during the 2020 growing season. Blackleg According to those surveys, 45.4 per cent of 350 canola fields and five mustard fields evaluated across Alberta in 2020 had blackleg. The average rate of infection was 6.4 plants […] Read more
Crop disease experts take stock of 2020
Your provincial roundup of pulse and soybean diseases, what to watch for this year and emerging threats
From east to west, pulse and soybean growers face disease challenges, and last year was no different. For example, producers from all three provinces struggled with aphanomyces root rot in peas and lentils, Manitoba’s soybean farmers were warned of increased cases of soybean cyst nematode (plants are more susceptible to root rot and seedling disease […] Read more
What were the canola yield robbers in 2020?
Some farmers benefited from the environmental conditions while others were ready to put 2020 behind them
In 2020, canola fell more than 11 bushels short of the 52 bushels per acre yield target the Canola Council of Canada (CCC) hopes Canadian farmers can achieve by 2025. Though a handful of major factors held yield back last season, hot and dry conditions bit into the most acres, said CCC agronomy specialist Justine […] Read more
How to manage sclerotinia stem rot in canola
Disease risk comes down to moisture
Sclerotinia stem rot is one of the most destructive diseases in canola. The fungus can cause up to 50 per cent yield loss. From year to year, region to region, and field to field, occurrence and severity are extremely variable. Foliar fungicides remain the main source of control. Canola Council of Canada agronomy director, Clint […] Read more
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