QUIZ – This Week in Agronomy

Jay Whetter

Five questions on pests seen in canola this week. Test your agronomy skills related to insects, weeds and weather effects.

1. These were found in one canola field in the Peace River region of Alberta. What are they? Scarab beetle larvae
2. The weed on the bottom left is redroot pigweed seedling (red arrow). What is the weed seedling on the top right (blue arrow)?

redroot pigweed (left) and waterhemp (right)
3. What is caused this leaf discolouration?

Leaf discolouration due to excess moisture
4. Flea beetles have been chewing at this canola cotyledon. What is the leaf area loss?

25 per cent leaf area loss
5. Cabbage seedpod weevils are emerging and out and about across the Prairies. What is the right timing for a spray – if thresholds suggest a spray is warranted?

Cabbage seedpod weevil (close-up) on a canola plant