The library · Herbicide
Imazethapyr
An imidazolinone for pulses, with foliar and soil activity.
- Group
- Herbicide Group 2
- Family
- SUs, IMIs, TPs and SCTs
- Formula
- C15H19N3O3
- Molar mass
- 289.33 g/mol
Structure: PubChem CID 54740
How it kills
ALS / AHAS inhibitors
Blocks the enzyme that makes three key amino acids, so the plant can no longer build protein.
Growth stops first. Yellowing and death come slowly, sometimes over weeks.
Taken in by the leaf, then carried with sugars down to the roots and up to the growing points.
Where it fits
In the season.
Commonly used on
- Broadleaf weeds
- Pulses
Good to know
- Mind re-cropping intervals.
- Group 2 resistance affects many weeds.
- The most resistance-prone group on the Prairies. Kochia, wild oats, cleavers and many others have Group 2 resistant biotypes.
On Dean's list
Products with Imazethapyr.
| Product | Similar to | Strength |
|---|---|---|
| Imazamox/Imazethapyr | Odyssey WDG | Imazamox 35% + Imazethapyr 35% WDG |
| Imazethapyr | Pursuit | — |
Sold alongside: Imazamox
Same group, same mode of action
