Each fall the Western Forum on Pest Management meets to review the previous growing season. Scientists, researchers, and agronomists get together to compare notes on what happened during the previous growing season. This helps everyone get a better understanding of the issues so that they can help each other help farmers. Dale Leftwich, field editor… Read More
Tag: Holly Derksen
Now is the time to check canola fields for symptoms of clubroot, as a new streak of cases have been found in Manitoba over the last few weeks. The clubroot map for the province will likely be changing this fall, as the soil-borne disease has been found in a new municipality, says Holly Derksen, field… Read More
Do wheat varieties perform in line with the ratings provided during the registration process? When it comes to fusarium head blight tolerance, the short answer is yes, but the long answer is it depends on the year. Holly Derksen, plant pathologist with Manitoba Agriculture, explains that the province has been tracking resistance performance of wheat… Read More
Stripe rust was reported in early spring in Alberta, likely having over-wintered in the southern part of the province, and now there are reports in Manitoba of the fungus arriving on winds from the U.S. In this Wheat School episode, Holly Derksen, plant pathologist with Manitoba Agriculture, Food and Rural Development, describes how stripe rust inoculum moves north from the… Read More
Poor emergence or damping off of young soybean plants can be a sign of a seedling disease or root rot problem, especially following cool, wet weather as experienced in much of the soybean growing part of Western Canada this spring. As Holly Derksen, plant pathologist with Manitoba Agriculture, explains in this Soybean School West episode, there are… Read More
Another gene that has provided resistance to crown rust in oat varieties grown in Western Canada is losing its effectiveness. The Pc91 gene was a source of resistance to crown rust in some of common varieties in recent years, including Souris, Stainless, HiFi, AAC Justice and CDC Morrison, but changes in the crown rust pathogen population in… Read More
It’s too early to say how big a problem verticillium wilt could become for the Canadian canola industry, but it should be on the radar for growers, says the crop pathologist taking the lead on the new disease issue within Manitoba Agriculture. As reported by Real Ag last week, the first known case of Verticillium… Read More
Editor’s note: This story was updated on Thursday, January 8th with additional information from the CFIA about the location of the case of verticillium wilt in canola. The first North American case of a disease that has caused serious economic losses in Europe’s rapeseed crop has been found in a canola trial plot in Manitoba…. Read More
With clubroot disease showing up in fields east of Alberta over the last few years, there’s work underway in Manitoba to survey the entire canola-growing region of the province for the presence of clubroot spores. So far, spores or symptoms have been found in 13 fields in 10 rural municipalities in Manitoba. Spore concentrations in… Read More
It may have an ominous sounding name, but black chaff is rarely a cause for major concern in wheat, says a crop pathologist with Manitoba Agriculture. Black chaff is one of several wheat disorders that will catch a grower’s eye at harvest due to the dark colour and discolouration that appears on wheat heads. As… Read More
Two years ago if you had asked the average Saskatchewan canola grower what aster yellows was, they likely wouldn’t have been too concerned about it, if they had ever heard of it at all. That’s because aster yellows, a disease carried by the aster leafhopper insect that mangles the buds/pods of a plant, typically occurs… Read More
Manitoba has the not-so-great distinction of being the fusarium hot spot of the Canadian Prairies. This year, ample moisture and recent heat have combined to create a high-humidity soup pot of fusarium head blight growth and spread. Farmers in other provinces need to be on the look out as well, as the disease spreads west…. Read More
While seeding may be running a wee bit behind average for many, the long days and warmer soil can mean crops pop up quite quickly. In Manitoba, many canola fields are pushing through in about a week, which makes now a great time to start scouting for a number of things, like flea beetle feeding… Read More