Category: Canola Disease, Weeds & Insects

Canola School: Lessons learned about weed seed destruction machines

With increasing cases of herbicide resistance, machines designed to destroy weed seeds at harvest could be a valuable tool. But like any technology that is not yet widely adopted, there are also some lessons to be learned and challenges to overcome, as researchers with Agriculture and Agri-Food Canada confirmed last year. 2017 marked the first… Read more »

Canola School: Research looking at liming to suppress clubroot

Although it’s been proven that high pH soil will not stop the spread of clubroot disease, liming has been used as a tool to curb the disease in other parts of the world. Early results from a research project underway in Alberta show raising the pH of acidic fields with lime could potentially aid in… Read more »

Canola School: The mysterious canola flower (not swede) midge

Seven years after swede midge was identified in Ontario, three adult midge were found in Saskatchewan, in 2007. It was then believed the insects were the same species (Contarinia nasturtii), but researchers have since discovered differences between the two. “We have now behavioural evidence — we know that what we thought was swede midge in… Read more »

Canola School: New test unlocks ability to match variety resistance with blackleg type

Researchers with Agriculture and Agri-Food Canada at Saskatoon have developed a lab test for identifying blackleg disease races in canola that complements the new blackleg resistance-gene labels on canola seed. Knowing both factors — the blackleg races present in a field and the disease packages available in seed — will allow farmers to select varieties with resistance… Read more »

Canola School: Check seed labels to rotate blackleg resistance

You may notice some new information on canola seed bags this year — a label that lists what type of blackleg resistance the variety contains. We’ll spare you all the quirky names and numbers for the actual genetic resistance, but Dilantha Fernando, with the University of Manitoba, says farmers can use the alphabetical designation of… Read more »

Canola School: Welcome to Clubroot Anonymous

Switch to longer rotations, reduce soil movement, grow resistant varieties — the list of keys to managing against clubroot disease has become familiar for many canola growers in Western Canada, but an Alberta farmer with years of experience farming with high clubroot concentrations has another piece of advice: don’t be afraid to talk about it…. Read more »

Canola School: Winter canola and the eastern experience

When we think of canola, we think Western Canada. And there’s no doubt that the prairies are the canola capital, but Meghan Moran, canola and edible bean specialist with the Ontario Ministry of Agriculture, Food and Rural Affairs, reminds us that there are still canola growers in Ontario, too. While the all-time high of 90,000… Read more »

Canola School: Identifying the new mystery midge

Researchers with Agriculture and Agri-Food Canada are in the process of identifying and describing a tiny midge species that was first confirmed in canola fields in parts of Western Canada last year. It’s not swede midge, as was previously thought. This new species belongs to the same Contarinia genus, but is more robust, has hairier… Read more »

Canola School: Scout for blackleg at harvest

The canola pods are almost done filling, if not at full maturity, in many areas of the prairies, and harvest is beginning. We often think of scouting as something we have to do earlier in the season when there are still control options, but don’t always remember the importance of knowing what’s going on in… Read more »

Canola School: Weather aids arrival of diamondback moths

Numbers of diamondback moths have increased in Western Canada over the past couple of weeks, in part due to the dry weather and strong winds. In some areas where the canola is still in late bloom, they are causing a fair amount of damage. Héctor Cárcamo, entomologist with Agriculture and Agri-Food Canada, says the key to… Read more »

Canola School: Following the smooth side — a tip for assessing maturity

When it comes to assessing canola maturity at this time of eyar, it can be tricky to see what’s what, especially when it comes to a thick canola crop. In this Canola School episode, Keith Gabert, agronomy specialist with the Canola Council of Canada, shares a tip for finding the main stem — a trick… Read more »

Canola School: Making the call on when to spray for sclerotinia

When you see the stem rot in the field, it’s too late. And that’s just one of the reasons why managing sclerotinia is a challenge, as exerienced in 2016, a severe year for the disease in canola fields in Western Canada. In this Canola School episode, we talk to Michael Harding, plant pathologist with Alberta… Read more »

Canola School: Sweep net monitoring for aster leafhoppers

Aster yellows is a ‘phytoplasma’ disease carried by aster leafhoppers. It’s known for the odd-shaped canola pods it causes later in the growing season. Problems with aster yellows are hit and miss, depending on your area and the year. “We are kind of waiting for the next leafhopper infestation with aster yellows, the next big… Read more »

Canola School: The trouble with flea beetles…

Less than ideal conditions have slowed down canola development and left the crop vulnerable to tiny 2.5 millimetre beetles in some areas this spring. Flea beetles are the number one pest in canola on the Western Canadian Prairies. In this Canola School episode, we talk with Tyler Wist, entomologist with Agriculture and Agri-Food Canada in Saskatoon, about how… Read more »

Canola School: Be on alert for cutworm and wireworm

With the cooler soil temperatures we’ve been seeing across Western Canada, unwanted pests are beginning to show up in some fields. Alberta Agriculture and Forestry Insect Management Specialist Scott Meers says that early on in the season we should be keeping our eyes out for stand establishment insects such as cutworms and wireworms. There have been a… Read more »