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The Global Invasive Species Team | |
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Global Invasive Species Team listserve digest #080 Fri Mar 16 2001 - 15:50:14 PST --CONTENTS-- 1. Garlon 4 prices (Florida) 2. Texas Conference on Invasive Species and Restoration (Texas) 3. Imminent Weed Management Workshop (New York) 4. Weed alerts and Species Management Summaries (Nationwide) 5. Information sought on invasive Agrostis and Poa species (Global) 6. Six principles for controlling weeds with volunteers (Maryland) --------------------------------------- 1. Garlon 4 prices (Florida) From: Mark Zeller (ark.zeller(at)dep.state.fl.us) There is a product called Garlon 4 Forestry (Dow) which only comes in 30 gallon drums, but is identical to the regular Garlon 4. The percent active is the same as regular Garlon 4, and the label is an exact copy except for the word "forestry". We purchase ours under a state PO for $62.00/gal which is still cheaper than the regular Garlon 4 in 2.5 gallon, which we get under the same bid for $78.73/gal --------------------------------------- 2. Texas Conference on Invasive Species and Restoration (Texas) From: Barry Rice (bamrice(at)ucdavis.edu) The Texas Society for Ecological Restoration is having its 6th Annual Conference 17-19 August, in Hunt Texas. The featured topic is "Invasive Species and Ecological Restoration". If you wish to learn more about the schedule, registration, etc., point your web browser to: http://www.phil.unt.edu/ser/ --------------------------------------- 3. Imminent Weed Management Workshop (New York) From: Cris Winters (cwinters(at)tnc.org) A four hour Weed Management Workshop, presented by TNC's national invasive plant expert John Randall. The workshop will focus on managing invasive plants, including preventing invasion, setting control priorities, and adaptive management. John Randall is the Director of The Nature Conservancy's Wildland Invasive Species Team. The meeting is in Syracuse, New York, and costs $15-30. To register, contact the IPC office by phone (518-271-0346) or e-mail (lquillen(at)tnc.org). Confirmation is needed by March 22nd. Registration forms can be downloaded from the Wildland Invasive Species Team web site at http://tncweeds.ucdavis.edu/meetings.html --------------------------------------- 4. Weed alerts and Species Management Summaries (Nationwide) From: Barry Rice (bamrice(at)ucdavis.edu) Three new weed alerts have been posted on the Wildland Invasive Species Program website: Romulea rosea (a western weed), Cayratia japonica (Gulf Coast states), Cryptocoryne beckettii (another Gulf Coast weed). See http://tncweeds.ucdavis.edu for more information. We have also modified how we have posted our weed Element Stewardship Abstracts. Now you have the option to comment on these documents. We'll add your comments to the web site for each weed. Think of this as a way to update the Species Management Summaries and make each more of a "living" document. As an example, see http://tncweeds.ucdavis.edu/esadocs/allipeti.html --------------------------------------- 5. Information sought on invasive Agrostis and Poa species (Global) From: M. Jordan (mjordan(at)tnc.org), J. Randall (jarandall(at)ucdavis.edu) Please let us know of any instances you are aware of where non-native Agrostis species (redtop, bentgrass) or Poa species (bluegrasses) are invasive. Research reports or data supporting this will be especially valuable. We are seeking this information because it has recently come to our attention that there are several research projects seeking to genetically manipulate non-native Agrostis stolonifera and Poa pratensis for herbicide resistance. If the work is successful and releases are approved for these herbicide resistant grasses might become widely used in various turfgrass and golf course mixes. If so, they might interbreed and pass herbicide resistance to escaped, free-living populations, including any that have invaded natural areas. Different Agrostis species are known to interbreed with one another and the same is true of different Poa species. Officials from the USDA-APHIS program responsible for determining whether genetically manipulated plants should be approved for release have indicated that they will seriously consider well-documented evidence that Agrostis spp. and Poa spp. are troublesome invaders in any decisions they make. We know Agrostis stolonifera (synonym A. alba) is invasive in globally rare native grassland communities on Long Island, NY and Agrostis species are also widespread and locally abundant in Massachusetts. Agrostis stolonifera has also been reported as invasive in TNC's Middle Fork of the John Day River in eastern OR and A. tenuis has been reported from prairies in the Puget trough south of Seattle, WA and in meadows of the Sierra Nevada. Poa pratensis is invasive in meadows and grasslands at sites scattered the northern US. Unfortunately, thus far we have only been able to find anecdotal evidence of the problems these species cause so we seek better-detailed and documented information. --------------------------------------- 6. Six principles for controlling weeds with volunteers (Maryland) From: Marc Imlay (ialm(at)erols.com) Marc Imlay leads and works with volunteer groups that have had success controlling some invasive plants in several parks and preserves in Maryland. He found that the following principals help ensure effectiveness: 1)Morale. Have enough volunteers, usually 10 or more, to get the job done and see real results. 2)Judicious use of herbicides carefully targeted to the alien invasive species where they biodegrade relatively quickly and do not move to other plants. 3)Flexibility. Pull after a rain storm when it is easy. You can remove annuals when the weather is dry, or spray at that time. 4)Compare fact sheets from different groups, especially: --Maryland Native Plant Society (http://www.mdflora.org) --Virginia Natural Heritage/Virginia Native Plant Society (http://www.state.va.us/~dcr/dnh/invallia.htm) --Tennessee Natural Heritage/Tennessee Native Plant Society (http://www.se-eppc.org/, see Publications for Tennessee manual) --Invasive Plants of Canada Project (http://infoweb.magi.com/~ehaber/factgarl.html) --Alien Plant Working Group (http://www.nps.gov/plants/alien/factmain.htm) --The Nature Conservancy's Wildland Invasive Species Team (http://tncweeds.ucdavis.edu) 5)Inventory and prioritize by harm, doability, and incipient populations. Some invasives cause more harm than others. Some may be too difficult to remove now. Newly established invasives are a high priority. 6)Follow through. Plan on coming back to get them all. |
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