W ater primrose

n Since 2010, the CPIE has conducted experiments on managing water primrose without herbicides (mowing and thermal weed control) in the towns of Tercis-les- Bains and Orist.. From

n Since 1991, the water channels in the wetlands linked to the Sèvre-Niortaise, Mignon and Autizes Rivers have been colonised by two species of water primrose.. n

n At the request of the Rhône-Méditerranée-Corse water agency, the Vistre EPTB has since 2008 organised uprooting of water primrose in the upper sections of the Vistre basin to

n A high level of biodiversity exists in Sologne due to the many wetlands that, if colonised by water primrose, could no longer serve for the native plant and animal species

n From 2003 to 2009, herbicides were used to control Ludwigia grandiflora on the meadows of several towns (Tercis, Rivière, Saint-Vincent-de-Paul, Orist, Saubusse) and in

n Stenopelmus rufinasus thus represents a potential means of biological control for water fern, particularly for major proliferations of water fern over large surface areas on

n Sexual reproduction in the spring in the form of spores capable of resisting drying, this type of reproduction would appear to be very infrequent in France.. n

- in 2012, at the start of the multi-year management plan, it was difficult to find companies with the necessary experience in uprooting water primrose in rivers;.. - the first