HerbicideFluroxypyr

NOMENCLATURE Common name fluroxypyr (BSI, draft E-ISO, (m) draft F-ISO, ANSI) IUPAC name 4-amino-3,5-dichloro-6-fluoro-2-pyridyloxyacetic acid Chemical Abstracts name [(4-amino-3,5-dichloro-6-fluoro-2-pyridinyl)oxy]acetic acid CAS RN [69377-81-7]

Chemistry

Fluroxypyr is applied as fluroxypyr-meptyl. After predominantly foliar uptake, the ester is hydrolysed to the parent acid, which is the herbicidally active form, and translocated rapidly to other parts of the plants. Acts by inducing characteristic auxin-type responses, e.g. leaf curling.

 Use

Fluroxypyr is effective by post-emergence foliar application, controlling a range of economically important broad-leaved weeds (including Galium aparine) in all small grain crops, and Rumex spp. and Urtica dioica in pastures. Directed applications are used against herbaceous and woody broad-leaved weeds in orchards (apple only) and plantation crops (rubber and oilpalm), and broad-leaved brush spp. in conifer forests. Post-emergence, broadcast applications of fluroxypyr in maize up to the 6-leaf stage of the crop are used for control of Calystegia sepium, Convolvulus arvensis and Solanum nigrum. The meptyl and 2-butoxy-1-methylethyl esters have similar activity, the advantage of the latter being the wider range of formulation options that are available.

Production formulation

Fluroxypyr 20%EC
Fluroxypyr 25%EC

Package