GFM Network News


The openings on the roots of soybean plants infected by SCN may cause the plant to be more susceptible to the development of root rot and seedling diseases.

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

Pea root rot moves into new cropland about the same way as clubroot. Follow the clubroot protocol.

The looming Prairie-wide pea crop disaster

Follow the clubroot protocol to ensure your future as a pea grower

When I first became involved in checking out pea diseases in Alberta in 1974, pea crops were few and far between. Pea growing was somewhat of a disaster. The pea variety generally grown was called Trapper. This was a tall, six-foot vine that lodged as soon as pod-filling took place. The mass of lodged leaves […] Read more


As much as possible, prevent the spread of disease by reducing movement of soil between fields.

How to prevent, detect and manage aphanomyces

Q & A with an expert

Q: I’m hearing more about aphanomyces. How can I prevent the disease from becoming a problem on my farm? A: Aphanomyces is a serious soil-borne disease of peas and lentils that is becoming increasingly widespread in Western Canada. Aphanomyces euteiches is a root rot pathogen that thrives under wet conditions. Symptoms are often first detected […] Read more



Get your pea and lentil seed tested

Get your pea and lentil seed tested

Preliminary testing results show high levels of ascochyta in Saskatchewan’s pea seed

Early results are in, and the recommendation is to get your pea and lentil seed to a testing lab, ASAP. At the Top Notch grower meeting in Moose Jaw sponsored by SaskCanola, SaskFlax, and the Saskatchewan Pulse Growers, Saskatchewan’s provincial plant pathologist, Barb Ziesman, talked about the preliminary seed test results from Saskatchewan seed tests […] Read more

Aphanomyces is not currently widespread in Manitoba, but pea growers do need to be concerned about it in the long term.

Two diseases to watch for in peas

Ascochyta blight and aphanomyces root rot occur in dry years as well as wet


If you’re growing peas for the first time this year, of if you haven’t grown them in a while, you’ll want to watch for these two diseases in your fields: ascochyta blight and aphanomyces root rot. The disease that is perhaps most concerning, most visible and most likely to cause yield loss is ascochyta, or […] Read more


In certain rows, Cory’s lentil plants were stunted and the leaves of those plants were turning yellow and shriveling. Some plants in the affected rows were already dead.

Crop advisor casebook: Why are rows of these lentils yellowing and stunted?

A Crop Advisor's Solution from the April 23, 2019 issue of Grainews

Cory owns a 4,000-acre grain farm near Cupar, Sask. His crop rotation consists of lentils, wheat, durum and canola. It was around the middle of June when I received a call from Cory, who was concerned about his lentil crop after he noticed that in certain rows the plants were stunted and the leaves of […] Read more

Yes to peas, no to aphanomyces

Yes to peas, no to aphanomyces

Peas are a great crop for the Prairies, but aphanomyces root rot is a major threat

Peas as a human and animal feed have been around since 5000 BC. The pea plant, a nitrogen-fixing legume, originated in the cooler areas of the Himalayas and was subsequently cultivated extensively in the Mediterranean basin. Peas, dried peas in particular, were a major part of the diet in the U.K. in the 19th and […] Read more


Be aware of aphanomyces in your area or your own cropland.

Preventing and controlling aphanomyces root rot

Aphanomyces root rot is not airborne or seedborne, like clubroot of canola, the disease is soil borne. This fungus, like clubroot, forms resting spores that can last for 10 years in infested soil. Infection of the legume host can take place at anytime in the season but is not obvious early in the year. The […] Read more

Healthy (right) versus infected (left) roots in lentils.

Managing aphanomyces root rot in your fields

Q & A with CPS

Q: What is aphanomyces and how should I manage this disease? A: Aphanomyces is a relatively new root rot disease in pea and lentil crops that is quickly expanding across the Prairies. Aphanomyces root rot is caused by aphanomyces euteiches, a soil-borne plant pathogen. The symptoms of aphanomyces root rot are yellowing and stunting of […] Read more