Description
Azimsulfuron is a potent active ingredient belonging to the sulfonylurea chemical class, widely recognized for its efficacy as a systemic, selective herbicide. It is primarily engineered for the protection of paddy rice crops, offering a precise solution for managing various problematic weed species without damaging the main crop.
The primary mode of action of Azimsulfuron involves the inhibition of the acetolactate synthase (ALS) enzyme. This enzyme is crucial for the biosynthesis of essential amino acids such as valine and isoleucine. By halting the production of these amino acids, the herbicide effectively stops cell division, leading to the rapid growth cessation and subsequent death of target weeds.
Targeted application of Azimsulfuron is essential for the successful management of broad-leaved weeds and sedges within rice fields. Its systemic nature allows the plant to absorb the active ingredient through both foliage and root systems, which provides flexibility in application timing relative to the water management practices typical in rice cultivation.
When applying this herbicide, agronomists should focus on uniform distribution to ensure the active substance reaches the canopy and root zone of the weeds effectively. Low application rates, which are characteristic of modern sulfonylureas, allow for excellent weed control efficacy while maintaining a favorable profile for the rice crop's physiological development.
Safety and handling procedures for Azimsulfuron require the use of personal protective equipment to prevent skin and eye contact. Given its high biological activity, users must take extreme care to prevent drift towards non-target areas or sensitive crops. Furthermore, proper tank cleaning protocols are recommended to avoid any residues that might affect subsequent crops in a rotation cycle.
Status in the European Union
Not approved in the EU
- CAS number
- 120162-55-2
- Approved from
- 01.01.2012
- Approval until
- 31.12.2021
- ADI
- 0.1 mg/kg bw/day
- ARfD
- Not appl.
- AOEL
- 0.1 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.