Canola Watch 2024 Exam – Section 4

The Canola Council of Canada has a new sclerotinia risk assessment calculator. Step 1 of the tool has a questionnaire that works through a number of risk factors, then makes a fungicide recommendation for the field. One risk factor is sclerotinia severity in the previous host crop. How many risk points apply if the severity was “Moderate – 11-30% infected stems”?

Canola Watch will often use information, including forecast maps, from the Prairie Pest Monitoring Network at prairiepest.ca. The network features an “insect of the week” through the growing season. Week 11 of 2024 featured this insect, shown at various instars. What is it?

The Canola Research Hub includes reports on completed and ongoing canola research projects. It also has a blog. The blog post “Integrated weed management starts early and varies by species” includes a poster from the Prairie Weed Monitoring Network. The poster shows herbicide resistant weeds in the Prairies region, organized by herbicide groups 1, 2, 3, 4, 5, 9, 14 and 15. How many of those groups include kochia?

Keep It Clean has pre-harvest glyphosate staging guides for canola, cereals and pulses. The canola guide says: Only apply once grain moisture content is less than ____ in the least mature part of the field. Applying too early can result in unacceptable product residues in the grain.

The Canola Council of Canada has a number of factsheets and infographics available for download in PDF format. An infographic called “Comparison of root rot pathogens” describes activity and symptoms for pythium species, fusarium species and rhizoctonia Solon. The infographic describes one disease that is likely a combination of all three pathogens working together. What is the disease?

In the Canola Genetics Development section of the Canola Encyclopedia at canolaencyclopedia.ca is a chapter called “canola cultivar traits.” That chapter has a table showing blackleg resistance, clubroot resistance and shatter tolerance ratings for each commercial cultivar. What does the asterisk (*) beside the R mean in the clubroot resistance column?

The March 2024 Canola Digest had an article called Aussie Rules. It described canola agronomy practices in Australia that may be of interest in Canada. For example, Australian farmers often set a seeding date based on what?

In 2024, the Canola Watch weekly email included short agronomy videos from the field. In July, CCC agronomy specialist Jason Casselman posted a video on scouting for lygus. He said: “Recent research supported by several entomologists report that a range of ____________ is the economic threshold recommendation to spray for lygus bugs.” (Fill in the blank)

In an August short video, CCC agronomy specialist Breanna Miller showed how to submit samples for verticillium stripe and blackleg testing. You should submit how many stem-base segments and what lengths?

In a September short video, CCC agronomy specialist Ian Epp shared a green seed experience from his farm. He had a field hit with hail just before harvest, and when he first tried to combine it, green counts were 12%. He waited. The swaths got some rain and warm temperatures, which is what canola needs to resume the green cleaning process. What was the green count when Ian finally combined the crop?