[Invasive-species] a question about Crassula helmsii, an invasive waterplant species in Western Europe
keteleer.steven at gmail.com
Wed Oct 17 19:33:24 CEST 2012
Thanks all for the answers.
2012/10/17 filip verloove <filip at br.fgov.be>
> Dear all,
> I remember Jo Packet (INBO) has some experience with this noxious weed. I
> think you should contact him (jo.packet at inbo.be).
> In the nature reserve De Zegge in Geel Crassula helmsii also was/is an
> aggressive environmental weed. I don't know if they have been able to cope
> with it but it could be worthwhile asking someone from Natuurpunt.
> Best wishes,
> On Tue, 16 Oct 2012 23:32:30 +0200, Steven Keteleer wrote
> > Dear members of this mailing list,
> > I've been asked to get information about the most effective combats
> > Crassula helmsii. This species is now widely scaterred in Flanders
> > and before that elsewhere in Western Europe.
> > Is there anyone between you who knows a way to fight this invasive
> > waterplant effectively?
> > I should like to know about cases in other countries than Belgium and
> > Flanders where methods of combats against this species are proven to
> > be effective and efficiënt. Particullarly important to us is the
> > effectiveness over the longer term. Thus, which methods are proven
> > to make this species disappear for a longer period? Of course
> > methods without the use of poison are of most interest.
> > Answers may be send to my private email but may also be shared over this
> > list.
> > Kind regards,
> > Steven Keteleer
> National Botanic Garden of Belgium
> Domein van Bouchout
> B-1860 Meise
> tel +32 (0)2 260.09.20
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