QUIZ – Cabbage seedpod weevil Jay Whetter July 3, 2025 Cabbage seedpod weevil on canola. Photo credit: Shelley Barkley Three questions on cabbage seedpod weevil attractants, spray thresholds and how they damage canola. 1. A Western Manitoba farmer found a bunch of cabbage seedpod weevils gathered on her canola plant counts ring. Why? Cabbage seedpod weevils on plant count ringCabbage seedpod weevils are attracted to yellow.The ring was the one dry area in a wet field.Cabbage seedpod weevils are aggressive, and tend to attack things that fly into their feeding area.Totally random. Cabbage seedpod weevils are on everything. 2. While scouting canola near Swift Current, Saskatchewan this week, one agronomist collected 254 weevils in 10 sweeps. (The field average was much lower.) What is the spray threshold for cabbage seedpod weevils in canola?2-5 per 10 sweeps25-40 per 10 sweeps50-100 per 10 sweeps200-500 per 10 sweeps 3. How do cabbage seedpod weevils cause yield loss in canola?They eat pollen from flowers, reducing seed set.They chew buds and flowers.They are a vector for bacterial infection that causes seed rot in pods.They lay eggs in pods, and the hatched larvae eat seeds. Loading...
