In this week’s quiz, we ask you to identify five weeds — including the one above. With the answers, we also provide useful agronomy information for each weed.
June 11 Quiz
Here are the questions:
1. Growers have two key considerations when it comes to spraying — good coverage and drift management. What two objectives below will help you achieve good coverage while also reducing the drift risk?
2. Which situation is most likely to provide the greater economic return for a herbicide spray?
3. The best conditions for spraying herbicide are?
June 4 Quiz
Three questions with visuals and tips that will augment your early season scouting, including “The cotyledon on the left is likely to die. Why?”
May 28 Quiz
The questions for this week:
1. Flea beetles have been feeding on these cotyledons. What percentage of these leaves are considered defoliated?
2. Cutworm damage tends to be in patches. But lots of damage can occur in patches, including herbicide carryover, seedling diseases, so scouting is essential. What is the best way to scout for cutworms?
3. Why is this insect special?
May 22 Quiz
Three questions:
1. Neil Harker, research scientist with AAFC in Lacombe, Alberta, says to provide “high yield protection” weed control should ideally occur before the ______ stage of the crop.
2. Integrated weed management uses various methods to keep weeds below economically-damaging levels. Of the following four points, three are proven principles of integrated weed management. Which one is NOT?
3. What is this weed?
May 14 Quiz
Three questions on seeding date:
1. Say canola seeded on May 1 has 100% of its yield potential. After what seeding date does canola yield potential drop below 80% of its May 1 level?
2. Growers have methods to help late-seeded crops mature earlier. Of the four choices below, three are legit, and one is not. Which choice will NOT shorten days to maturity?
3. Based on Canola Performance Trial data for 2013, roughly how many days can you gain by swapping the latest maturing Argentine hybrid for the earliest maturing Argentine hybrid?
May 7 Quiz
Can you go four for four? Here are the questions:
1. One gram of soil, less a sugar cube’s worth, from a heavily clubroot-infested field could have how many clubroot spores?
2. Considering the answer to question 1, how many canola plants could be infected with clubroot if that one gram of heavily infested soil was sprinkled over an entire acre?
3. Seeding was later than average across the Prairies in 2013, with significant progress made in the last 10 days in May. Alberta was ahead of the pack, with 60% of canola seeded by May 21, 2013. Manitoba was around 50%. Curiously, what percentage of intended canola acres were seeded in Saskatchewan at that time?
4. What was the average canola yield across the Prairies in 2013?
Canola Watch 2013 Exam
CCA Quiz 2013 answer key