Canada approves Syngenta's fluazifop-P-butyl herbicide in special review

The Canadian Pest Management Regulatory Agency (PMRA) has proposed the continued registration of Syngenta's herbicide fluazifop-P-butyl, following a special review of pest control products containing fluazifop-P-butyl as a result of the Norwegian decision to prohibit all uses of this active ingredient in Norway due to human health concerns (Rotterdam Convention, 2001).

Fluazifop-P-butyl was first registered in Canada in 1989. Fluazifop-P-butyl is a post-emergent herbicide that is used to control grass weeds in broadleaf crops and ornamentals. It acts by inhibiting fatty acid synthesis in the plant. Fluazifop-P-butyl is applied 1-3 times per year with an application rate of up to 250 g a.i./ha. The commercial end-use product is formulated as an emulsified concentrate and is applied using ground spray equipment or handheld equipment.