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Global Invasive Species Team listserve digest #059
Fri Apr 07 2000 - 13:46:53 PDT
--CONTENTS--
1. Rust on Rhamnus, dangers of sawtooth oak (Indiana)
2. Celastrus orbiculatus control near wetlands (Massachusetts)
3. Lepidium latifolium Species Management Summary, Euonymus alatus alert (Nationwide)
4. Jack's herbicide wand (Nationwide)
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1. Rust on Rhamnus, dangers of sawtooth oak (Indiana)
From: Ellen Jacquart (ejacquart(at)tnc.org)
A botanist here came across a booklet (Native Shrubs of South Dakota -
Extension Circular 706; no date, but at least pre-1980) that states that
Rhamnus cathartica is "the alternate host for crown rust of oats." I have
never heard about this - does anybody know more about it?
Also, the planting of sawtooth oak (Quercus acutissima) in Indiana
bottomlands is increasing in popularity because this species produces lots
of mast at a very young age. My knee-jerk reaction is to be wary of such a
species. Anybody out there have experience with it invading natural areas?
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2. Celastrus orbiculatus control near wetlands (Massachusetts)
From: Karen Lombard (klombard(at)tnc.org)
Has anyone had any experience using Rodeo to remove Celastrus infestations
near wetlands? I have two patches (14 x 5 m, 10 x 15 m) with some large
vines to remove within 100 feet of wetlands. The element stewardship
abstract recommends Garlon type herbicides, but these are not allowed in
wetlands.
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3. Lepidium latifolium Species Management Summary, Euonymus alatus alert (Nationwide)
From: Barry Rice (bamrice(at)ucdavis.edu)
We have uploaded a new Species Management Summary on Lepidium latifolium (whitetop, perennial
pepperweed) to the web site. We also have an alert on line for Euonymus
alatus (winged euonymus, winged wahoo). This is a plant with some
horticultural uses, and which has some invasive qualities that make it
worth watching. These files can be downloaded at:
http://tncinvasives.ucdavis.edu/esadocs/lepilati.html
http://tncinvasives.ucdavis.edu/alert/alrteuon.html
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4. Jack's herbicide wand (Nationwide)
From: Barry Rice (bamrice(at)ucdavis.edu)
Jack McGowan-Stinski (Michigan field office) has devised an inexpensive
tool for applying herbicide via cut stump or cut stem. This PVC applicator
is easy to make. We have put construction plans on our web site. If you
would rather, you can contact us and we will lend you one of ours. To
learn more about Jack's amazing herbicide wand, go to:
http://tncinvasives.ucdavis.edu/tools/wand.html
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