Canada approves herbicide fluroxypyr

The Canadian Pest Management Regulatory Agency (PMRA) is granting full registration for the sale and use of Dow AgroSciences’ Starane F Technical Herbicide and Starane II Herbicide, containing the active ingredient fluroxypyr, for postemergent suppression or control of kochia in industrial and non-cropland areas including roadsides, rights of way and industrial vegetation management areas.

Fluroxypyr is a systemic and selective post-emergent herbicide that offers control of hard-to-kill annual broadleaved weeds such as kochia (2-8 leaf), cleavers (1-4 whorl), and chickweed (up to 8 cm) in small grain cereals and control of kochia in rangeland, permanent pasture, industrial and other non-cropland areas. Fluroxypyr is formulated as fluroxypyr-methylheptyl ester which, after predominantly foliar uptake, hydrolyses to fluroxypyr acid, which is the herbicidally active form of fluroxypyr. Fluroxypyr induces auxin-type responses and disrupts plant cell growth in the newly forming stems and leaves of susceptible plants.