The library · Herbicide
Florasulam
A triazolopyrimidine Group 2 with good activity on cleavers and chickweed in cereals.
- Group
- Herbicide Group 2
- Family
- SUs, IMIs, TPs and SCTs
- Formula
- C12H8F3N5O3S
- Molar mass
- 359.29 g/mol
Structure: PubChem CID 11700495
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
- Cleavers
- Broadleaf weeds
- Cereals
Good to know
- Effective at low use rates.
- Check cleavers for Group 2 resistance: surveys found it in 42% of tested Saskatchewan fields.
- 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 Florasulam.
| Product | Similar to | Strength |
|---|---|---|
| Florasulam | Prepass Flex ® | Florasulam 5% SC |
| Florasulam | PrePass TM FLEX Herbicide | Florasulam 25% WDG |
| Florasulam / Dicamba | Korrex II ® | Florasulam / Dicamba |
| Florasulam/Fluroxypyr | Stellar XL® | Florasulam 2.5 g/l + Fluroxypyr 100g/l |
Sold alongside: Dicamba, Fluroxypyr
Same group, same mode of action
