Classification

Herbicide / Agrochemical

Formulation

50%SC, 48%SC, 50%WP, 80%WP,95%TC,97%TC

Biochemistry

Photosynthetic electron transport inhibitor at the photosystem II receptor site. Maize tolerance is attributed to rapid detoxification by glutathione transferases.

 Mode of action

Selective systemic herbicide, absorbed principally through the roots, but also through the foliage, with translocation acropetally in the xylem and accumulation in the apical meristems and leaves.

Usage

Pre- and post-emergence control of annual broad-leaved weeds and annual grasses in maize, sorghum, sugar cane, pineapples, chemical fallow, grassland, macadamia nuts, conifers, industrial weed control. In Europe, use is concentrated in maize and sorghum at ≤1.5 kg/ha. Used also in combinations with many other herbicides.

Mammalian Toxicology

Oral: Acute oral LD50 for rats 1869-3090 mg tech./kg, mice >1332-3992 mg/kg. 

Skin and eye: Acute percutaneous LD50 for rats >3100 mg/kg. Mild skin irritant; non-irritating to eyes (rabbits). Skin sensitiser in guinea pigs, but not in humans. 

Inhalation: LC50 (4 h) for rats >5.8 mg/l air.