clopyralid
Trade Names: Lontrel 360, Transline
Group 4
Site of Action: Synthetic auxins
Symptoms
At first symptoms include:- Bending, twisting, swelling and elongation of stems
- Leaf cupping and curling
- Chlorosis at the growing points
- Growth inhibition
- Wilting
- Necrosis, and death of susceptible plants within 3- 5 weeks
- Low concentration may cause young leaves to look puckered
Uptake and Translocation
- Rapidly absorbed by foliage
- Translocated readily throughout the plant via both xylem and phloem systems
- Clopyralid is distributed throughout the plant to the meristem
Persistence
- Half life in field: less than 30 days
- Residuals may injure certain crops (such as tomatoes and peppers) planted 1 year after application