Response of selected aquatic invasive weeds to flumioxazin and carfentrazone-ethyl

Published source details Richardson R.J., Roten R., West A., True S. & Gardner A. (2008) Response of selected aquatic invasive weeds to flumioxazin and carfentrazone-ethyl. Journal of Aquatic Plant Management, 46, 154-158.
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This study is summarised as evidence for the following.

	Action	Category
	Parrot’s feather: Use of herbicides - carfentrazone-ethyl Action Link
	Parrot’s feather: Use of herbicides - other herbicides Action Link

Parrot’s feather: Use of herbicides - carfentrazone-ethyl

A small, replicated, controlled, laboratory study conducted in the USA (Richardson et al. 2008), found that the herbicide carfentrazone-ethyl reduced growth in parrot’s feather Myriophyllum aquaticum. Parrot’s feather plants treated with carfentrazone-ethyl had a lower dry weight (0.55–0.88 g) than untreated plants (1.43 g). Parrot’s feather shoot tips (5–10 cm) were transplanted into 9 cm² pots. Carfentrazone-ethyl application rate ranged between 56 and 224 g/ha and each herbicide rate was applied to pots with three plants and plants in one pot were left unsprayed. Dates of the studies are not presented.

(Summarised by: Ricardo Rocha)
Parrot’s feather: Use of herbicides - other herbicides

A small, replicated, controlled, laboratory study conducted in the USA (Richardson et al. 2008), found that the herbicide flumioxazin reduced growth in parrot’s feather Myriophyllum aquaticum. Parrot’s feather plants sprayed with flumioxazin had a lower dry weight (0.29–0.74 g) than unsprayed plants (1.43 g). Parrot’s feather shoot tips (5–10 cm) were transplanted into 9 cm² pots. Application rate of the herbicide flumioxazin ranged between 34 and 437 g/ha and each herbicide rate was applied to pots with three plants and plants in one pot were left unsprayed. Dates of the studies are not presented.

(Summarised by: Ricardo Rocha)