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The Global Invasive Species Team | |
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Global Invasive Species Team listserve digest #119 Tue Jul 22 2003 - 14:35:36 PDT --CONTENTS-- 1. All-TNC, all invasives meeting! (Global, Planet Earth) 2. Comment period on black carp (Nationwide, USA) 3. Request for advice on johnsongrass (Oklahoma, USA) 4. Using lake/river water in herbicide mixes (Virginia, USA) 5. Illinois and North Carolina weed lists (Illinois, North Carolina, USA) 6. Crocosmia (California, USA) 7. Invasive plants and forest management (Indiana, USA) 8. Caterpillar predation on Ailanthus (Pennsylvania, USA) 9. Leafy spurge woes (Illinois, USA) 10. Web site additions (Global, Planet Earth) --------------------------------------- 1. All-TNC, all invasives meeting! (Global, Planet Earth) From: Barry Rice (bamrice(at)ucdavis.edu) Ooh! Ooh! Have you marked your calendar for the All-TNC invasives meeting in Fort Lauderdale, 2-3 November? If not, do so. Use a pen, not a pencil. Learn more about this meeting---a definite must-see for all TNCers doing invasives---at: http://tncweeds.ucdavis.edu/meetings.html --------------------------------------- 2. Comment period on black carp (Nationwide, USA) From: Barry Rice (bamrice(at)ucdavis.edu) Chris Oberholster (TNC Alabama) sent me news that the black carp (Mylopharyngodon piceus) is being considered for inclusion on the listing of injurious fish, mollusks, and crustaceans under the Lacey Act. It would prohibit importation and interstate trade of this species unless permits were first obtained (exceptions exist for scientific study and a few other situations). Those who can provide comments on the impact of this species are encouraged to contact the US Fish & Wildlife Service by 4 August, 2003, at BlackCarp(at)fws.gov. For more information, refer to the file on line at: http://a257.g.akamaitech.net/7/257/2422/ 14mar20010800/edocket.access.gpo.gov/2003/pdf/03-13996.pdf You will have to cut/paste this long url together into your web browser. I have also temporarily posted this document on the WIST web site: http://tncweeds.ucdavis.edu/news/02072003.pdf --------------------------------------- 3. Request for advice on johnsongrass (Oklahoma, USA) From: Bob Hamilton (tallgrass(at)tnc.org) What are the latest ideas regarding herbicides to control Johnsongrass (Sorghum halepense)? For over 5 years we have been spot-spraying johnsongrass on several miles of roadside with Roundup (2% solution) and it does not seem like we are gaining any ground. --------------------------------------- 4. Using lake/river water in herbicide mixes (Virginia, USA) From: Curtis Hutto (cjhutto(at)dcr.state.va.us) Does anybody have experience tank mixing glyphosate (Rodeo) with lake or river water? I am concerned about the particulates reducing the efficacy of the formulation, but this would make the logistics of aquatic spraying much easier. --------------------------------------- 5. Illinois and North Carolina weed lists (Illinois, USA) From: Barry Rice (bamrice(at)ucdavis.edu) Ann Bartuska sent me some good news from Illinois. The Illinois Exotic Weeds Act was amended for the first time since it was enacted in 1985. Both kudzu and buckthorn were added to The bill passed unanimously in the senate, and passed the house with only one dissenting vote. The Act prohibits the buying, selling, distributing, or planting of seeds or plants of designated exotic weeds. As a result of the amendment, the plants now designated "exotic weeds" in Illinois are: Japanese honeysuckle (Lonicera japonica), multiflora rose (Rosa multiflora), and purple loosestrife (Lythrum salicaria), common buckthorn (Rhamnus cathartica), glossy buckthorn (Rhamnus frangula, syn. Frangula alnus), saw-toothed buckthorn (Rhamnus arguta), dahurian buckthorn (Rhamnus davurica), Japanese buckthorn (Rhamnus japonica), Chinese buckthorn (Rhamnus utilis), and kudzu (Pueraria lobata, syn. Pueraria montana). Ironically, the assigned number to this house bill was 666. Similarly, Beth Bockoven (TNC-North Carolina) emailed me that as of April 2003, oriental bittersweet (Celastrus orbiculatus) is listed as a Class C noxious weed in NC. For more information, see the North Carolina Dept. of Agriculture web page: http://www.ncagr.com/plantind/plant/weed/nxwdrg.htm --------------------------------------- 6. Crocosmia (California, USA) From: Andrea Pickart (andrea_pickart(at)r1.fws.gov) Does anyone have advice for thick infestations of Crocosmia crocosmiiflora? (A common name for this is montbretia.) --------------------------------------- 7. Invasive plants and forest management (Indiana, USA) From: Ellen Jacquart (ejacquart(at)tnc.org) I am working with local foresters to increase awareness of invasive plant species. I hope they can be early detectors for plant invaders, similar to how they already are detectors for insect invasives. I have a chance to speak at an IN/OH SAF meeting in August on this topic and want to make clear the extent of the problem and what they can do. But I need some help... **Does anyone have information on economic impact (actual or potential) of invasive plants on forestry in the Midwest? No such impacts are included in Pimental, et. al's 2000 paper on costs of invasives, but there are certainly forest regeneration problems in the midwest due to Japanese honeysuckle, mile-a-minute vine, and others. **Does anyone know of existing best management practices documents for forestry regarding invasive plant species (e.g. minimizing soil disturbance, seeding bare areas to non-invasive plants, importance of follow up control efforts, etc.) --------------------------------------- 8. Caterpillar predation on Ailanthus (Pennsylvania, USA) From: Robert O'Neill (roneill(at)gfnet.com) I just wanted to drop you a line to inform you about something I witnessed around July 2002, while cutting invasive exotic vines in Wissahickon Park in Philadelphia. I saw a small grove of Ailanthus altissima (tree if heaven) saplings in a small clearing beneath the forest canopy that were clearly stressed and struggling. This caught my eye as I have never seen a place that Ailanthus wouldn't thrive! The terminal leaflets of the seedlings were being consumed by a small caterpillar no bigger than an inch long. I did not take a caterpillar for identification (but I could if I see this occurring again). Could it be used in the biological control of Ailanthus? Has anyone else reported anything like this? Is this significant? --------------------------------------- 9. Leafy spurge woes (Illinois, USA) From: Debra Nelson (dnelson(at)dnrmail.state.il.us) I have been fighting leafy spurge at Volo Bog SNA (in Illinois) for two years now. Originally it looked like an isolated population which I treated aggressively with RoundUp and also 3% Garlon 3A (which immediately top kills the plants and probably prevent seed production but may not kill it completely). This year I discovered 3 new populations in the vicinity, one of which was along the side of the road near Volo. I have also now noted that a fairly large population is thriving along the side of the road near Chain O'Lakes State Park. These side-of the-road populations concern me because of the potential for roadside mowing to occur just as the plants are setting seed, spreading it far and wide. I have contacted staff at McHenry County Conservation District, maybe we still have a fighting chance against this scourge. Please be on the lookout for this plant which should be treated immediately to prevent seed production. It spreads very quickly and is very difficult to eradicate. I would appreciate input from anyone who has observed it elsewhere in the NE Illinois area, especially if they have found a successful way to treat it. --------------------------------------- 10. Web site additions (Global, Planet Earth) From: Barry Rice (bamrice(at)ucdavis.edu) Mandy Tu has posted a marvelous new species management document (Species Management Summary) on Elaeagnus angustifolia at: http://tncweeds.ucdavis.edu/esadocs/elaeangu.html Meanwhile, I have updated the web site's listing of upcoming meetings, which is hopping with new entries! Be there, or be square: http://tncweeds.ucdavis.edu/meetings.html |
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