Active ingredient

Tribenuron methyl

Chemical name

2-[[[[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)methylamino]carbonyl]amino]sulfonyl]benzoate

Classification

Herbicide / Agrochemical

Formulation

95% Tech, 75%WDG, 75%DF, 75%WP

Biochemistry

Affects sensitive weeds through inhibition of the enzyme acetolactate synthase (ALS). Inhibition of ALS leads to the rapid cessation of cell division and subsequent growth processes in plants.

 Mode of action

Selective, post-emergence herbicide, acting primarily through foliar uptake, with little or no soil activity. Symptoms of chlorosis appear in affected weeds in days with necrosis and death occuring after 10-25 days under optimal conditions.

Usage

Post-emergence control of broad-leaved weeds in cereal crops, including wheat, barley, oats, rye and triticale, at 7.5-30 g/ha.

Mammalian  Toxicology

Oral: Acute oral LD50 for rats >5000 mg/kg. 

Skin and eye: Acute percutaneous LD50 for rabbits >5000 mg/kg. Non-irritating to skin and eyes (rabbits). Mildly sensitising to skin (guinea pig maximisation test), but not likely to be a dermal sensitisation risk to humans. 

Inhalation: LC50 (4 h) for rats >5.0 mg/l air.

Certificate of quality

T ribenuron-methyl  95% Tech