Information on the following plants

Bob Vickery vickery at MPX.COM.AU
Sun Oct 25 07:35:14 EST 1998


"Pat Frasher" <cent at uq.net.au> wrote:

>Can I get some information on the following plants and effects
>
>Groundsel. Lantana, Prickly Pear....
>

Groundsel = _Senecio_  species.  There are 40 species in New South Wales of
which five are introduced.  These are minor weeds of disturbed ground in
Australia.  _Senecio madagascariensis_ is a declared noxious weed in some
places because of its toxicity to horses and cattle. (Flora of NSW, (Ed)
Gwen J. Harden, New South Wales Univesity Press, 1992)

Lanatana: There are several introduced lantanas.  As far as I know, only
_Lantana camara_ has become a noxious weed.  It is a major pest of fertile
well-watered areas in Australia. It is  also poisonous to animals.  Several
insect have been introduced to control lantana.  They may have had some
success but there is still a lot of lantana around.

Prickly pear = _Opuntia stricta_

This was a serious pest covering wide areas of North-Eastern Australia,
from the 1840ies until it was spectacularly controlled by introduction of
the _Cactoblastis cactorum_ insect in 1926. Prickly pear is now rare. (C.
B. Osmond & J. Monro pp 194-222 in 'Plants and Man in Australia', D.J. &
S.G.M Carr, Adademic Press 1981)

>what are the effects of these introduced plant pests in Australia?
>if you could just outline what they do /are, or where I can get some further
>information regarding this.
>
>cent at uq.net.au
>thankyou


Bob Vickery
vickery at mpx.com.au





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