Description
Chlorotoluron is a herbicide belonging to the urea derivative chemical class. It is widely utilized in modern agriculture to control a range of annual grass weeds and certain broad-leaved weeds. Its primary application field includes cereal crops, specifically winter and spring wheat, as well as winter barley.
The mechanism of action for chlorotoluron involves the inhibition of photosynthesis. By interfering with the electron transport chain at photosystem II, the compound effectively stops the plant's ability to produce energy. This leads to the characteristic yellowing of leaves, stunting, and the eventual death of the target weeds.
It acts both through soil absorption by roots and direct contact through foliage. This dual-action pathway makes it a robust choice for pre-emergence and early post-emergence weed management. For optimal performance, the product requires adequate soil moisture, which ensures the active ingredient is well-distributed and available to the germinating seeds.
- Effective control of grasses such as black-grass and meadow grass.
- Provides residual soil activity for prolonged protection.
- High selectivity towards wheat and barley varieties.
- Compatible with integrated weed management programs.
Application precision is crucial, as the efficacy and crop safety of chlorotoluron depend significantly on soil type and organic matter content. On lighter, sandy soils, lower rates are often recommended to prevent potential crop phytotoxicity, particularly when environmental conditions induce stress in the plants.
Safety protocols mandate the use of appropriate personal protective equipment (PPE) during handling and application to prevent dermal or respiratory exposure. As with all herbicides, it is essential to follow label instructions, maintain correct buffer zones near water bodies, and adhere to re-entry intervals to ensure the safety of both the applicator and the environment.
Status in the European Union
Approved in the EU
- CAS number
- 15545-48-9
- Approved from
- 01.03.2006
- Approval until
- 15.08.2026
- ADI
- 0.04 mg/kg bw/day
- ARfD
- Not appl.
- AOEL
- 0.215 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.
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