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Herbicide Risk Assessment for Non-target Aquatic Plants: Sulfosulfuron – a Case Study by Joanna Davies; Joy L Honegger; Francesca G Tencalla; Giovanna Meregalli; Philip Brain; Jonathan R Newman; Hannah F Pitchford is a Agricultural and Biological Sciences article available to read on EtoBox.

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## Abstract Herbicides entering the aquatic environment by spray drift, run‐off and leaching to field drains may cause adverse effects on non‐target aquatic vegetation. The potential for such effects has typically been evaluated from tests with floating, monocotyledonous __Lemna__ sp. However, concern has been expressed as to whether this species could be used to indicate potential effects on other vegetation types, particularly rooted, submerged, emergent or dicotyledonous species. In 1997, the Centre for Aquatic Plant Management undertook development of new tests based on the additional species, __Glyceria maxima__ (Hartm) Holmb, __Lagarosiphon major__ (Ridl) Moss and __Myriophyllum spicatum__ L. The resulting methodology was used to assess the effects of the sulfonylurea herbicide, sulfosulfuron on these species. Data presented here demonstrate that exposure to initial sulfosulfuron concentrations of 3.33 μg litre^−1^ for up to 21 days was tolerated by these species and that adverse effects were observed only when plants were exposed to initial concentrations of 3.33 and 10 μg litre^−1^ for 70 days. As the occurrence of such high initial concentrations for long periods is unlike

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Author

Joanna Davies; Joy L Honegger; Francesca G Tencalla; Giovanna Meregalli; Philip Brain; Jonathan R Newman; Hannah F Pitchford

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 1526-498X)

Published

2003

Language

EN

Field

Agricultural and Biological Sciences (Life Sciences)