Experimental Study of Bioaccumulation and Effects of the Herbicide Isoproturon on Freshwater Root Macrophytes Elodea densa and Ludwigia natans

Isoproturon is a pre- or post-emergence systemic herbicide used to control annual grasses and broad-leaved weeds in wheat, barley, and rye. Water-column experiments were conducted to examine the bioaccumulation and effects of Isoproturon on two freshwater rooted macrophytes-Elodea densa and Ludwigia...

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Veröffentlicht in:Chemosphere (Oxford) 1996-04, Vol.32 (8), p.1499-1499
Hauptverfasser: Feurtet-Mazel, A, Grollier, T, Grouselle, M, Ribeyre, F, Boudou, A
Format: Artikel
Sprache:eng
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Zusammenfassung:Isoproturon is a pre- or post-emergence systemic herbicide used to control annual grasses and broad-leaved weeds in wheat, barley, and rye. Water-column experiments were conducted to examine the bioaccumulation and effects of Isoproturon on two freshwater rooted macrophytes-Elodea densa and Ludwigia natans. For E. densa, ponderal growth was decreased 40% when exposed to 100 mu g/l of the herbicide, and growth was insignificant at concentrations higher than 200 mu g/l. The inhibitory effects on L. natans were barely detectable. For both plants, bioaccumulation was relatively much more important within the lower concentration ranges. The effects of Isoproturon on oxygen production were linked directly to its phytotoxic properties.
ISSN:0045-6535