Ethoxysulfuron
Description
Ethoxysulfuron is a potent active ingredient belonging to the sulfonylurea chemical class. It acts as a selective, post-emergence herbicide primarily used to manage a wide range of broad-leaved weeds and sedges in various agricultural settings, providing essential protection for crop yields.
The mode of action of ethoxysulfuron involves the inhibition of the enzyme acetolactate synthase (ALS). By preventing the biosynthesis of essential amino acids, the herbicide effectively stops the cell division process. As a result, susceptible weeds cease growing shortly after application and eventually die off completely as the active ingredient translocates through the plant tissues.
In practice, ethoxysulfuron is predominantly applied in rice cultivation. It is highly effective against major weed species that typically infest flooded fields, ensuring that the rice crop has minimal competition for nutrients, sunlight, and space during its critical early development stages.
Effective application requires targeting the early stages of weed growth. Because the product works systemically, environmental conditions such as soil moisture and air temperature play a significant role in its uptake and translocation. Agronomists recommend precise timing to maximize the efficacy of the treatment while minimizing the potential for crop stress.
Safety and handling are paramount when utilizing this herbicide. Users must wear appropriate personal protective equipment to prevent dermal or respiratory exposure. Furthermore, it is essential to implement drift control strategies and maintain water management practices to prevent environmental contamination, particularly in aquatic ecosystems associated with paddy rice fields.
- Excellent selectivity for rice crops
- Systemic herbicidal activity
- Low application rates required
- Effective control of resistant weed biotypes
Status in the European Union
Not approved in the EU
- CAS number
- 126801-58-9
- Category (EU)
- HB - Herbicide
- Approved from
- 01.07.2003
- Approval until
- 31.03.2014
- ADI
- 0.04 mg/kg bw/day
- ARfD
- Not appl.
- AOEL
- 0.06 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.