An image of a moderately infected canola root. Photo credit: Alberta Agriculture and Forestry, Valerie Sowiak

Ponoka County farmers advised to rotate canola crops

The best way to avoid clubroot is to follow best practices set out by Alberta Ag

The best way to avoid canola clubroot infestation in fields is to rotate the crop and consider the use of resistant varieties.

For Ponoka County farmers that appears to be how they operate as the county has only seen about 10 to 49 field infestations since 2003. That’s a good sign, says Justin Babcock, manager of agricultural services at Ponoka County.

“We have not seen an increase in clubroot infestations the last couple of years within Ponoka county. I believe that it is due to the increased use of resistant varieties,” said Babcock in an email.

“With that being said it is very important to remember that there has been an increase in the breakdown of the resistance found around the province.”

Considering that Lacombe and Wetaskiwin counties have seen over 50 in the same time period, taking proper steps to reduce the risk of canola is advised. Babcock recommends a one-in-four year rotation.

“This also includes the rotation of the seed varieties that are being used to help prevent a pathotype shift,” said Babcock.

While clubroot was found as early as the 13th century, the infestation for canola was first found in 2003 in Alberta.

“According to information provided by the Alberta Clubroot Management Committee, clubroot has been detected in over 1,000 fields, with incidence levels ranging from below 30per cent (low) to above 70 per cent (high),” states the Canola Council of Canada website.

“The disease distribution in infested fields has generally been patchy but in the 10 to 15 per cent of canola crops with high levels of clubroot infestation, the disease has occurred fairly evenly throughout the field.”

Clubroot facts:

• Clubroot galls are a nutrient sink, so they tie up nutrients, and severely infected roots of canola cannot transport sufficient water and nutrients for aboveground plant parts.

• Symptoms will vary depending on the growth stage of the crop when infection occurs. Early infection at the seedling stage can result in wilting, stunting and yellowing of canola plants in the late rosette to early podding stage.

• Symptoms may be wrongly attributed to heat stress during periods with high temperatures or to other diseases such as blackleg or Fusarium wilt.

• Infection that occurs at later stages may not show plant wilting, stunting or yellowing. However, infected plants will ripen prematurely, and seeds will shrivel. Thus, yield and quality (oil content) are reduced.

Prevention tips:

• Use long rotations – grow canola not more frequently than once every four years (i.e. three years out of canola).

• Planting clubroot-resistant varieties on fields without the disease can be useful when clubroot is present nearby.

• Producers should follow the practice of cleaning soil and crop debris from field equipment before entering or leaving all fields.

• The equipment cleaning procedure involves knocking or scraping off soil lumps and sweeping off loose soil.

Information collected on clubroot was used from the Alberta Agricultural and Forestry website.

 

Image credit: Alberta Agriculture and Forestry

Just Posted

Ellis Bird Farm opens 2019 with book unveil of Charlie, Winnie and the Bluebirds

Site Manager Myrna Pearman documented the history of central Alberta’s natural treasure

Ponoka RCMP respond to intoxicated male in Golden Leisure Lodge

On May 15, 2019 the Ponoka RCMP responded to a complaint of… Continue reading

Town to sign five-year policing agreement with Ponoka Stampede

The Town of Ponoka will go ahead with a five-year renewable agreement… Continue reading

UPDATED: Ponoka RCMP arrest male on Canada wide warrant

UPDATE for Immediate Release: Collin James Courteoreille was wanted on a Canada… Continue reading

Town passes 2019 budgets and tax bylaw with 2.2 per cent increase

Ponoka town council passed a $25.5 million 2019 capital and operating budget… Continue reading

Trudeau touts economic record at Liberal fundraiser in Vancouver

The Prime Minister was in B.C. for much of this week

CMHC defends mortgage stress test changes amid calls for loosening rules

Uninsured borrowers must now show they could service their mortgage if rates rose two per cent

Red Deer man arrested in connection with Leduc armed robbery

Leduc RCMP asking for public assistance after armed robbery – UPDATE

Leduc RCMP seek older suspect in alleged assault

Leduc RCMP seek public assistance in identifying assault suspect

School bus crash in Edmonton sends 12 to hospital, 2 with broken bones

Alberta Health Services said there were no life-threatening injuries

Crews fight fire with fire to keep blaze from northern Alberta town

The wildfire now covers some 920 square kilometres

Supreme Court of Canada won’t hear Alberta murder appeals

Sheena Cuthill and her husband Timothy Rempel were found guilty three years ago of killing Ryan Lane

Pipeline protester chimes in on Justin Trudeau’s B.C. fundraising speech

The government purchased the Trans Mountain pipeline and expansion project for $4.5 billion

Canada stripping citizenship from Chinese man over alleged marriage fraud

The move comes amid severely strained relations between Ottawa and Beijing

Most Read