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Providing evidence to improve practice

Individual study: Greenhouse response of six aquatic invasive weeds to imazamox

Published source details

Emerine S.E., Richardson R., True S., West A. & Roten R. (2010) Greenhouse response of six aquatic invasive weeds to imazamox. Journal of Aquatic Plant Management, 48, 105-111


This study is summarised as evidence for the intervention(s) shown on the right. The icon shows which synopsis it is relevant to.

Parrot’s feather: Use of herbicides - other herbicides Control of Freshwater Invasive Species

A small, replicated, controlled, laboratory study conducted in the USA (Emerine et al. 2010) found that the herbicide imazamox reduced the growth parrot’s feather Myriophyllum aquaticum. After five weeks, plants treated with imazamox had a dry weight (0.97 g) approximately 40–85% lower than that of untreated plants (3.15 g). Application of imazamox to parrot’s feather regrowth led to similar biomass reduction. Dry weight of plants treated with imazamox did not differ from the dry weight of plants treated with the herbicides glyphosate (0.49 g) or imazapyr (0.39 g). The plants were grown for approximately three weeks prior to herbicide application and each treatment had four replicates. Herbicides were sprayed on plants with no submerged growth. Concentration of imazamox ranged from 35 to 580 g/ha, glyphosate was applied at 2240 g/ha and imazapyr at 560t g/ha.

(Summarised by Ricardo Rocha)

Parrot’s feather: Use of herbicides - other herbicides Control of Freshwater Invasive Species

A small, replicated, controlled, laboratory study conducted in the USA (Emerine et al. 2010) found that the herbicide imazapyr reduced the growth of parrot’s feather Myriophyllum aquaticum. After five weeks, plants treated with imazapyr had a lower dry weight (0.39 g) than that of untreated plants (3.15 g). Application of imazapyr to parrot’s feather regrowth led to similar biomass reduction. Dry weight of plants treated with imazapyr did not differ from the dry weight of plants treated with the herbicide imazamox (0.97 g) or glyphosate (0.49 g). The plants were grown for approximately three weeks prior to herbicide application and each treatment had four replicates. Herbicides were sprayed on plants with no submersed growth. Herbicide concentration was 560 g/ha for both imazapyr and imazamox and 2240 g/ha for glyphosate.

(Summarised by Ricardo Rocha)

Parrot’s feather: Use of herbicides - other herbicides Control of Freshwater Invasive Species

A small, replicated, controlled, laboratory study conducted in the USA (Emerine et al. 2010) found that the herbicide glyphosate reduced the growth of parrot’s feather Myriophyllum aquaticum. After five weeks, plants treated with glyphosate had a lower dry weight (0.49 g) than untreated plants (3.15 g). Application of glyphosate to parrot’s feather regrowth led to a similar biomass reduction. Dry weight of plants treated with glyphosate did not differ from that of plants treated with the herbicide imazamox (0.97 g) or imazapyr (0.39 g). The plants were grown for approximately three weeks prior to herbicide application and each treatment had four replicates. Herbicides were sprayed on plants with no submerged vegetation at a concentration of 2240 g/ha for glyphosate and 560 g/ha for both imazamox and imazapyr.

(Summarised by Ricardo Rocha)