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Tag Archives clubroot

Once pulled, clubroot-infected plants are best disposed of by burning.
Canola, Crops

Swift removal of infected plants key for clubroot control

You can kill the plant, but the pathogens remain to continue infecting the soil

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Reading Time: 4 minutes A new study shows that even after a plant infected with clubroot has been killed with a herbicide and frozen to ensure all plant cells are dead, the pathogen survives and continues to mature. The study led by Mary Ruth McDonald, a professor of plant agriculture at the University of Guelph, and Agriculture Canada scientist […] Read more
Wet conditions will increase the chance of clubroot-infected soil sticking to machinery and being transferred to other fields.
Crops

Disease considerations for a late and wet spring

In the west, it could mean more clubroot transmission. In the east, growers should be concerned about phytophthora in soybeans

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Reading Time: 4 minutes At the time of writing, spring moisture conditions in Eastern Canada remained to be seen, but there wasn’t much question about the Prairies — many growers would still be dealing with wet soils and late planting due to rain and snow from last fall. For example, by early October the Western Cypress Hills area of […] Read more
Short rotations are partly to blame for the emergence of clubroot, which can reduce canola yield to zero.
Canola, Crops

Putting a value on crop diversity

Economists and agronomists are getting together to compare the benefits of short and long rotations

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Reading Time: 3 minutes Have you ever stared at your crop plan and wished that it didn’t rely so heavily on canola? Or wheat? Or peas? Or any crop that is too often called on for cash flow at the expense of proper rotation? Agronomists have been beating the drum of crop diversity for years and farmers understand that […] Read more
(Cropscience.bayer.ca)
Canola, Crops

DeKalb pulls two ‘inconsistent’ canolas off market

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Reading Time: 2 minutes Up against an “inconsistency of grower experiences” with the seeds’ yields in 2019, Bayer Canada is yanking two of its DeKalb TruFlex canola hybrids from the market. DeKalb’s DKTF 92 SC and DKTF 94 CR will not be available for 2020, Bayer said. Canola growers who have already booked those seeds for this spring are […] Read more
The efficacy and durability of clubroot resistance depends a lot on inoculum levels in the soil.
Canola, Crops

Hope ahead for more durable clubroot resistance

A combination of two resistance genes shows promise against multiple pathotypes

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Reading Time: 3 minutes Since it was first discovered in Alberta in the early 2000s, clubroot has proven a wily opponent for plant pathologists and breeders. Back then, researchers identified a handful of clubroot pathotypes, mostly minor, and one major one that was responsible for most infections and yield loss in Western Canada. Plant breeders focused on that and […] Read more
Western Canada’s “King wheat” acreage is now equalled by the former “Cinderella crop” of canola, but that’s at the expense of the recommended frequency in rotation.
Canola, Crops

Taking a long-term look at agronomy for canola

Researchers say canola’s environmental footprint has improved but a new agronomic struggle is on the horizon

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Reading Time: 4 minutes Canola-based rotation systems can improve long-term sustainability by using less energy and storing carbon below the ground, but keeping them going on top is proving to be a challenge. A study by Saskatchewan Research Council’s Susan MacWilliam, along with Agriculture and Agri-Food Canada research scientist Reynald Lemke and others, compared the impact of changing management […] Read more
Clubroot galls on a canola plant. (Video screengrab from Canola Council of Canada via YouTube)
Canola, Crops

Clubroot able to beat resistant canola reaches Manitoba

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Reading Time: 3 minutes A strain of clubroot able to club the roots of some resistant canola varieties has made its way east to Manitoba. Manitoba’s agriculture department reported Friday that clubroot pathotype 3A — a strain that can “overcome some first-generation sources of genetic resistance” in commercial canola — has been positively identified in the south-central rural municipality […] Read more
Agronomist Bill Ungar recommends farmers equip their pickup with disposable coveralls and booties, spray disinfectant and a dedicated pair of rubber boots in a disinfectant tray.
Crops

Biosecurity a crucial part of your farm’s business plan

As the list of pest, weed and disease threats grows longer, so should the list of measures to keep them away

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Reading Time: 9 minutes The signs instructing you to check in at the office and to put disposable booties on over your shoes are no longer just for when you visit hog and poultry farms — biosecurity measures are also becoming a feature for crop farms, for which the list of potential threats may be even longer. On its […] Read more
Twelve tips to clubroot management
Canola, Crops

Twelve tips to clubroot management

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There are several key management tools producers need to apply to minimize the risk of clubroot either reaching a damaging level, and/or to reduce a heavy spore load of the pathogen in the soil to a tolerable level (about 1,000 spores or less per gram or teaspoon of soil will not affect crop performance). The[...]
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Soil pH is often highly variable within fields, as demonstrated in this map of a single central Alberta field. The range is from red (pH of 4-4.5) to dark lime green (pH of 7.5-8). That is why grid sampling is an important step in lime application.
Crops

If you have low soil pH, should you lime?

It can take tonnes of lime per acre to move soil pH from 5 to 7, but improved fertilizer availability for all crops, better nodulation for pulse crops and alfalfa, and reduced risk from clubroot in canola can make the investment worthwhile

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Reading Time: 5 minutes “Finally.” That word got special emphasis when Doug Penney was asked about liming. “It has become a hot topic… finally.” Penney, a long-serving Alberta Agriculture fertility specialist and now semi-retired crop consultant, says many fields in Western Canada — especially in Alberta — probably would have benefited from lime a long time ago. Fields most[...]
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