Soybean stems displaying the typical dark-brown lesions extending upwards from the soil.

Root rot races revealed

The knowledge will help farmers and researchers plan 
their response to the soybean disease

Agroundbreaking study has determined what are the most prevalent races of phytophthora root rot found in Manitoba soybean fields. The most prominent are Races 4, 25, 28 and 3. The most common is Race 4, according to the study, completed through the Pulse Science Cluster and funded by the Manitoba Pulse and Soybean Growers and

potatoes with pink rot

Cultural practices important for managing pink rot and leak

Environmental conditions can influence the appearance from year to year

Manitoba growers know there are plenty of differences between “wet” rots and “dry” rots in storage — but both can cause devastating losses each year. According to Neil Gudmestad, a distinguished professor at North Dakota State University’s department of plant pathology, important rots in storage include dry rot, late blight tuber rot, pink rot, leak


man spraying disinfectant on boots

Biosecurity measures key to combating crop diseases

Potato wart, potato cyst nematode, bacterial wilt (or brown rot) and bacterial ring rot 
are all diseases of concern to Manitoba potato growers in 2015

The risk of devastating losses from potato pests can be managed through crop biosecurity measures, says Vikram Bisht, an extension plant pathologist for Manitoba Agriculture, Food and Rural Development. As part of his presentation at Manitoba Potato Production Days in Brandon in January, Bisht issued a call to action to potato growers to stay ahead

Verticillium Wilt in canola

Disease a North American first

Where it came from isn’t as important as how it will be contained when it comes to verticillium wilt in canola

Manitoba prides itself on welcoming newcomers, but the canola sector won’t be rolling out the welcome mat for this one — verticillium longisporum. The disease was discovered in a Manitoba canola field late last fall and visually identified at Manitoba Agriculture’s Crop Diagnostic Centre. That determination was later confirmed by molecular analysis at the National


The treatment works by introducing a beneficial fungus which consumes the harmful fusarium strain.  photo: lionel kaskiw, MAFRD

A new biocontrol for fusarium head blight in cereals coming

An Ontario company will use a fungal organism found on a Manitoba field pea leaf 
to ward off FHB and possibly other fungi

Fighting fungi with fungi. That’s how an Ontario company plans to use an Agriculture and Agri-Food Canada (AAFC) discovery to control fusarium head blight in wheat and other cereal crops. Adjuvants Plus Inc. at Kingsville, Ont. has reached a 10-year licensing agreement with AAFC to use its patented technology — a fungal organism called Clonostachys

AgCanada boss says budget cuts won’t affect fusarium head blight research

Recently retired plant pathologists Andy Tekauz and Jeannie Gilbert will be replaced, 
but the positions will be in Morden, not Winnipeg

Agriculture and Agri-Food Canada isn’t easing up in the battle against fusarium head blight, says the director general for the department’s Prairie/Boreal Plain Ecozone. “Fusarium work is a high priority,” said Stephen Morgan Jones. “It is, along with the rust diseases, a very high priority for us.” Jones said two recently retired fusarium experts from


Goss’s wilt continues to spread

Goss’s wilt can be tackled through good management practices, but it may take 
genetic resistance to subdue the disease

It’s been four years since Goss’s wilt made its first appearance in Manitoba corn crops, and the disease shows no signs of abating. “It seems to have spread to most of the grain corn-growing regions of Manitoba,” said Holly Derksen, who spoke about the problem at a recent Special Crops Symposium in Winnipeg. Derksen, a

Scout your sunflowers, expert urges

Two dry years in a row doesn’t mean Manitoba sunflower growers can skip scouting for moisture-loving diseases. Producers should always be on the lookout for sclerotinia and rust, Holly Derksen said at the recent Manitoba Special Crops Symposium. “When we do have a wet year, those are ones to watch for,” said Derksen, a plant


Put these crop pests on your radar

Which pest is going to strike where next and how hard ranks right up there with weather forecasting for jobs that are difficult to get right. But extension agronomists say these are some of the yield robbers on their watch list. Soybean cyst nematode This pest hasn’t been found in Manitoba yet, but it could

Fungicide season has begun

Flag leaf stage applications provide the best protection Winter wheat is at, or near the stage, for applying fungicides to protect it from various leaf diseases and spring wheat isn’t far behind, says Holly Derksen, a plant pathologist with Manitoba Agriculture, Food and Rural Initiatives (MAFRI). Some winter wheat fields were at the flag-leaf stage