Noxious weeds in set-aside areas : Results of a nationwide observation network | Plantes indesirables dans les jacheres florales: resultats d'un reseau national d'observation
2007
Delabays, N. | Mermillod, G. | Bohren, Ch.,Station de recherche Agroscope Changins-Waedenswil ACW, Nyon (Switzerland)
Fallow land sown with a wildflower seed mixture is one of the major set-aside areas promoted by the Swiss legislation in order to enhance biodiversity in the landscape. Still, the installation of such areas on arable land raises concerns about their potential to contribute to the dissemination of noxious weeds. In order to gather information about weed development in such fallows, botanical observations have been carried, between 2003 and 2005, on about 200 of them nationwide. The majority presents an interesting or even excellent botanical composition. Nevertheless, several weeds were regularly observed, especially creeping thistle, broad-leaved dock, couch grass and bindweed. About 5 to 10% of the fallows were estimated to present a critical weed situation. Moreover, Solidago species (S. canadensis and S. gigantea) were registrered in about a third of them. Control methods are now under development to reduce the impact of these invasive species.
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Este registro bibliográfico ha sido proporcionado por Agroscope Reckenholz-Tänikon Research Station