Tritosulfuron
Description
Tritosulfuron is a potent active ingredient classified within the sulfonylurea group of herbicides. It is widely employed in professional agriculture as a selective systemic herbicide, designed to control a broad range of broadleaf weeds in various cereal crop production systems, ensuring optimal yields.
The mode of action of tritosulfuron is based on the inhibition of the acetolactate synthase (ALS) enzyme within target plants. By interfering with the synthesis of essential amino acids like leucine, isoleucine, and valine, the compound halts cell division and plant growth almost immediately upon absorption, leading to the gradual necrosis of weed tissues.
It is primarily registered for application on wheat, barley, oats, and rye. Tritosulfuron demonstrates exceptional efficacy against economically significant broadleaf weeds, including species such as Cirsium arvense, Chenopodium album, and various Polygonum species. It is particularly valued for its ability to clear fields of competition, allowing the crop to establish a robust canopy.
For best results, application timing is critical. It is recommended to apply the product when weeds are in the early growth stages, typically from the cotyledon to the four-leaf stage. Due to its systemic properties, tritosulfuron is translocated throughout the plant, providing control not only of the foliage but also helping to suppress perennial root systems under favorable conditions.
Safety and environmental stewardship are paramount when using this chemical. Operators must utilize appropriate personal protective equipment and ensure spray drift is minimized to protect adjacent non-target areas. As with other sulfonylureas, attention must be paid to rotational crop restrictions to prevent potential herbicide carryover in the soil, which could affect sensitive follow-on crops.
Status in the European Union
Not approved in the EU
- CAS number
- 142469-14-5
- Category (EU)
- HB - Herbicide
- Approved from
- 01.12.2008
- Approval until
- 06.11.2024
- ADI
- 0.06 mg/kg bw/day
- ARfD
- 0.15 mg/kg bw
- AOEL
- 0.15 mg/kg bw/day
Regulatory status data: EU Pesticides Database © European Union, CC BY 4.0. EU status is for reference only and does not replace national registration in your country.