Aphanomyces Root Rot in Peas.

What Causes Root Rot in Peas?

Root rot of peas in the Canadian prairies has been a growing concern over the last several years.  While root rot can be caused by a number of organisms including Fusarium, Rhizoctonia, and Pythium, Aphanomyces has garnered the most attention as the new kid on the block.  First confirmed in Saskatchewan in 2012, then Alberta in 2013, it now appears that the pathogen is much more widespread (about 45% of Alberta fields in 2014), suggesting that it has been present for several years.  Aphanomyces euteiches

What Causes Clubroot in Canola?

Clubroot in canola is caused by Plasmodiophora brassicae, a parasite that infects the roots of host plants and produces club-shaped galls that restrict the flow of water and nutrients. Plasmodiophora brassicae is an obligate parasite, meaning it cannot survive without a living host.

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Additional information:

What is a Fungal Screen™ for Cereals?

The Fungal Screen™ is a test that identifies potentially devastating seed-born pathogens that may be present on cereal seed (Please note: True Loose Smut requires a separate test.  Please click here to learn more.)

This is, perhaps, one of the most valuable diagnostic tools available to growers. It was developed by and is exclusive to 20/20 Seed Labs Inc.

What Causes True Loose Smut in Wheat and Barley?

The fungal pathogens that cause true loose smut, or TLS, are crop specific:

  • Ustilago nuda in barley
  • Ustilago tritici in wheat

Why Does it Matter?

What Causes Sclerotinia White Mold in Pulses?

A fungus called Sclerotinia sclerotiorum can attack a wide variety of crops, including pulses, vegetables, canola and forages, causing sclerotinia white mold.

ECONOMIC IMPORTANCE

  • Yield loss. During periods of wet or humid weather, yield loss from white mold can be as high as 50%.
  • Grade loss. Sclerotia (resting bodies) found in seed can reduce grades.

What are the Symptoms?

What Causes Sclerotinia in Canola?

A fungus called Sclerotinia sclerotiorum causes this disease.

Why Does it Matter?

What is a Complete Disease Diagnostic™ for Pulses?

The Complete Disease Diagnostic™ is a test that identifies potentially devastating seed-borne pathogens that may be present on pulse seed. This is, perhaps, one of the most valuable diagnostic tools available to pulse growers. It was developed by and is exclusive to 20/20 Seed Labs Inc.

Why do a Complete Disease Diagnostic™?

Seed-borne pathogens can cause a host of problems with germination, vigour and seedling health, which can, in turn, impact stand establishment and, ultimately, yield potential.

What Causes Botrytis Grey Mold in Pulse Crops?

A fungus called Botrytis cinerea infects many different crops, fruits, vegetables, ornamental plants, weeds, and tubers causing what is commonly called grey mold.

Why Does it Matter?

What Causes Blackleg in Canola?

The fungus Leptosphaeria maculans causes this disease.

Why Does it Matter?

Blackleg is a serious disease of canola in Canada. In Western Canada, it takes two forms:

What Causes Ascochyta Blight in Peas?

Three species of the Ascochyta fungus can cause this disease:

  • Ascochyta pisi
  • Ascochyta pinodella, also known as Mycosphaerella pinodella
  • Ascochyta pinodes, also known as Mycosphaerella pinodes

According to seed testing procedures approved by Canadian Food Inspection Agency, no distinction needs be made between A. pinodella and A. pinodes.

Why Does it Matter?

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