[APWG] Removing invasive grasses

[Marc Imlay]

 IVM example for an invasive non-native grass.

Marc Imlay, PhD

Conservation biologist, M-NCPPC

Board member of the Mid-Atlantic Invasive Plant Council,

Hui o Laka at Kokee State Park, Hawaii

Vice president of the Maryland Native Plant Society,

Chair of the Biodiversity and Habitat Stewardship Committee

for the Maryland Chapter of the Sierra Club.



-----Original Message-----
From: apwg-bounces at lists.plantconservation.org [
<mailto:apwg-bounces at lists.plantconservation.org>
mailto:apwg-bounces at lists.plantconservation.org] On Behalf Of Holly
Sletteland
Sent: Monday, April 04, 2011 10:19 PM
To: apwg at lists.plantconservation.org; 'californiaweedtalk at topica.com'
Subject: [APWG] Removing invasive grasses

Does anyone have any suggestions on an approach for removing invasive
grasses that are inter-mixed with wetland vegetation such as rushes, sedges
and native salt grass? The grasses we are dealing with are veldt grass
(Ehrharta calycina) and velvet grass (Holcus lanatus) primarily. We have a
real problem and we're not winning the battle by hand digging. There's too
much of a seed bank and the soil disturbance just brings up a whole new
crop. I'm thinking of perhaps "sacrificing" a section at a time and just
spraying everything and replanting wetland vegetation. I would try to hold
the line against any new invaders and move to a new section when things were
pretty well established. It might be  easier to control new grass shoots.
But I recoil at the thought of killing that many native plants. Are there
any selective herbicides (or concentrations) that would set the grasses
back, but not do in the sedges and rushes? Any other mechanical methods -
mulches, weed barriers, flamers, whatever that anyone has used with any
success? Help!

_______________________________________________

Holly Sletteland
Preserve Manager
Morro Coast Audubon Society
PO Box 1507
Morro Bay, CA 93443
805.772.1991 / 805.239.3928
_______________________________________________






-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.plantconservation.org/pipermail/apwg_lists.plantconservation.org/attachments/20110409/93aa5c49/attachment.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: arthraxon hispidus LPBPEPA.xls
Type: application/vnd.ms-excel
Size: 36864 bytes
Desc: not available
URL: <http://lists.plantconservation.org/pipermail/apwg_lists.plantconservation.org/attachments/20110409/93aa5c49/attachment.xls>