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The Global Invasive Species Team | |
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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) --------------------------------------- 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? --------------------------------------- 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. --------------------------------------- 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 --------------------------------------- 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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