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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><b><span style='font-family:"Arial",sans-serif;color:#1F497D'>Reminder. If you saw a large patch of Japanese Stiltgrass die last year from blight, it might be helpful to see if it continued , or even expanded this year. Five Years ago at the 200 acre Swann Park in Charles County, MD, a 20’x 30’ patch was infected by the classic looking Bipolaris rust blight after flower and it all died before seed formed. Marc<o:p></o:p></span></b></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Calibri",sans-serif'>From:</span></b><span style='font-size:11.0pt;font-family:"Calibri",sans-serif'> Marc Imlay [mailto:ialm@erols.com] <br><b>Sent:</b> Monday, August 29, 2016 9:47 AM<br><b>To:</b> 'maipc@lists.maipc.org' <maipc@lists.maipc.org><br><b>Subject:</b> RE: [MAIPC] Summer Invasives.<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><b><span style='font-family:"Arial",sans-serif;color:#1F497D'>Just to make it clear, the pre=emergent treatment recommended by Art Gover, worked very well on Microstegium. The issue is massive new invasions at the 200 acres Swann Park in Charles County and 200 acres in two parks in Prince Georges County in Maryland. <o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-family:"Arial",sans-serif;color:#1F497D'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span style='font-family:"Arial",sans-serif;color:red'>Marc Imlay, PhD, Chair, MAIPC Biological control working Group Conservation biologist, </span></b><o:p></o:p></p><p class=MsoNormal><b><span style='font-family:"Arial",sans-serif;color:red'>Park Ranger Office, Non-native Invasive Plant Control coordinator. </span></b><span style='font-family:"Arial",sans-serif;color:red'><a href="mailto:Marc.Imlay@pgparks.com"><b><span style='color:red;text-decoration:none'>Marc.Imlay@pgparks.com</span></b></a></span><o:p></o:p></p><p class=MsoNormal><b><span style='font-family:"Arial",sans-serif;color:red'>(301) 442-5657 cell Natural and Historical Resources Division</span></b><o:p></o:p></p><p class=MsoNormal><b><span style='font-family:"Arial",sans-serif;color:red'>The Maryland-National Capital Park and Planning Commission</span></b><o:p></o:p></p><p class=MsoNormal><b><span style='font-family:"Arial",sans-serif;color:red'> </span></b><o:p></o:p></p><p class=MsoNormal><b><span style='font-family:"Arial",sans-serif;color:red'>Marc Imlay, PhD <br>Chair of the Biodiversity and Habitat Stewardship Committee for the Maryland Chapter of the Sierra Club.</span></b><o:p></o:p></p><p class=MsoNormal><b><span style='font-family:"Arial",sans-serif;color:#1F497D'><o:p> </o:p></span></b></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Calibri",sans-serif'>From:</span></b><span style='font-size:11.0pt;font-family:"Calibri",sans-serif'> Marc Imlay [<a href="mailto:ialm@erols.com">mailto:ialm@erols.com</a>] <br><b>Sent:</b> Sunday, August 28, 2016 11:55 PM<br><b>To:</b> 'Ellis, Michael' <<a href="mailto:Michael.Ellis@pgparks.com">Michael.Ellis@pgparks.com</a>>; 'Art Gover' <<a href="mailto:aeg2@psu.edu">aeg2@psu.edu</a>>; 'Stephen Hiltner' <<a href="mailto:stevehiltner@gmail.com">stevehiltner@gmail.com</a>><br><b>Cc:</b> 'maipc@lists.maipc.org' <<a href="mailto:maipc@lists.maipc.org">maipc@lists.maipc.org</a>><br><b>Subject:</b> RE: [MAIPC] Summer Invasives.<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><b><span style='font-family:"Arial",sans-serif;color:#1F497D'>As Mike says, many new patches formed from new invasions even though we successfully used the pre-emergent treatment on mono-cultural patches of Stiltgrass. Marc<o:p></o:p></span></b></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Calibri",sans-serif'>From:</span></b><span style='font-size:11.0pt;font-family:"Calibri",sans-serif'> MAIPC [<a href="mailto:maipc-bounces@lists.maipc.org">mailto:maipc-bounces@lists.maipc.org</a>] <b>On Behalf Of </b>Ellis, Michael<br><b>Sent:</b> Saturday, August 27, 2016 10:11 PM<br><b>To:</b> Art Gover <<a href="mailto:aeg2@psu.edu">aeg2@psu.edu</a>>; Stephen Hiltner <<a href="mailto:stevehiltner@gmail.com">stevehiltner@gmail.com</a>><br><b>Cc:</b> <a href="mailto:maipc@lists.maipc.org">maipc@lists.maipc.org</a><br><b>Subject:</b> Re: [MAIPC] Summer Invasives.<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><div id=compose><div><p class=MsoNormal>Good to hear from you Art,<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Have you compared quizalofop-P with clethodim in your work? I've had great success with clethodim this year at two of our parks against Microstegium, even in August.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>I noticed at the low rate I was applying clethodim, it wasn't killing Dicantheliums, but was impacting Leersia virginica. We are all growing very concerned Microstegium's success at dramatically increasing populations annually despite time consuming control efforts each year. At this point it is colonizing rare habitats that we thought we could keep it out of if we managed it every year, such as our Magnolia bogs.<br><br>I personally have all but abandoned trial attempts to manage Oplismenus undulatifolius with grass specific or pre-emergent herbicides. Although both work very well at killing or preventing first year plants, the second year Oplismenus plants are harder to manage.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Regards,<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><div><p class=MsoNormal>Michael Ellis<br>Non-Native Invasive Plant Management Field Coordinator<br>Park Ranger Office, Natural and Historical Resources Division<br>The Maryland-National Capital Park and Planning Commission<br><a href="mailto:weedwarriors@pgparks.com">weedwarriors@pgparks.com</a><br><br>240-429-5042<o:p></o:p></p></div><p class=MsoNormal><o:p> </o:p></p></div></div><div><p class=MsoNormal style='margin-bottom:12.0pt'>_____________________________<br>From: Art Gover <<a href="mailto:aeg2@psu.edu">aeg2@psu.edu</a>><br>Sent: Saturday, August 27, 2016 9:51 PM<br>Subject: Re: [MAIPC] Summer Invasives.<br>To: Stephen Hiltner <<a href="mailto:stevehiltner@gmail.com">stevehiltner@gmail.com</a>><br>Cc: <<a href="mailto:maipc@lists.maipc.org">maipc@lists.maipc.org</a>><br><br><br>We use the selective grass herbicide quizalofop-P (e.g. “Assure II”) at its lowest labeled rate, and find that stiltgrass is controlled while other grasses such as Leersia virginica, Muhlenbergia scherberi, and Brachyelytrum erectum are not affected, nor any dicots or non-grass monocots.<br><br>Be well.<br><br>Art<br><br>Penn State Wildland Weed Management<br>116 ASI Building<br>University Park, PA 16802<br><br>(814) 863-9904<br>(814) 863-7043 FAX<br><a href="http://plantscience.psu.edu/wildland">http://plantscience.psu.edu/wildland</a><br><br>> On Aug 27, 2016, at 11:17, Stephen Hiltner <<a href="mailto:stevehiltner@gmail.com">stevehiltner@gmail.com</a>> wrote:<br>> <br>> Sorry to hear. Perhaps development of a C4 pathway specific herbicide would help, since stiltgrass is said to be one of the few C4 species that grows in the shade? Googling brings up a few results--more than would come up a few years ago.<br>> <br>> On Sat, Aug 27, 2016 at 10:53 AM, MarneyB <<a href="mailto:marneyb@earthlink.net">marneyb@earthlink.net</a>> wrote:<br>> On a walk recently on the River Trail at Great Falls MD I noticed that Golden ragwort – Packera aurea - was able to deter Japanese Stiltgrass in an area where this invasive and had taken to a large extent.<br>> <br>> <br>> <br>> Marney<br>> <br>> <br>> <br>> From: MAIPC [<a href="mailto:maipc-bounces@lists.maipc.org">mailto:maipc-bounces@lists.maipc.org</a>] On Behalf Of Marc Imlay<br>> Sent: Saturday, August 27, 2016 9:39 AM<br>> To: <a href="mailto:maipc@lists.maipc.org">maipc@lists.maipc.org</a><br>> Subject: [MAIPC] Summer Invasives.<br>> <br>> <br>> <br>> I have found this year that the Japanese Stiltgrass is no longer controllable over 400 acres of parkland in spites of extensive use of pre-emergents in March. At the 200 acre Swann Park beefsteak is no longer controllable. And many folks have found the same for Wavyleaf basketgrass. . Twenty years ago it was very doable to save all our parks. So mid-late Summer invasives is very sad, especially since stiltgrass is so totally destructive and replaces the other ground vegetation. <br>> <br>> <br>> <br>> I remind myself that I have been successful with invasives for the rest of the year including garlic mustard and Lesser Celandine. For the late Summer invasives , biological control remains our best hope, both effective host specific from Eurasia, etc. as well as waiting for native biological controls to pop up as with Ailanthus after 200 years. .<br>> <br>> <br>> <br>> From: Imlay, Marc <br>> Sent: Thursday, August 25, 2016 10:08 AM<br>> To: <br>> Subject: RE: Mniutes from August 2016 board meeting<br>> <br>> <br>> <br>> A top issue for invasive plant control folks is should we continue to remove all the Asiatic bittersweet, bush honeysuckle, juvenile garlic mustard, Japanese barberry, porcelain berry, beefsteak, multi flora rose, mimosa, wineberry, and mile-a minute. Or switch our resources to Japanese Stilt grass and wavyleaf basket grass that have become so much more abundant and destructive at our high priority sites.<br>> <br>> <br>> <br>> <br>> <br>> Marc Imlay, PhD, Chair, MAIPC Biological control working Group Conservation biologist, <br>> <br>> Park Ranger Office, Non-native Invasive Plant Control coordinator. <a href="mailto:Marc.Imlay@pgparks.com">Marc.Imlay@pgparks.com</a><br>> <br>> (301) 442-5657 cell Natural and Historical Resources Division<br>> <br>> The Maryland-National Capital Park and Planning Commission<br>> <br>> <br>> <br>> Marc Imlay, PhD <br>> Chair of the Biodiversity and Habitat Stewardship Committee for the Maryland Chapter of the Sierra Club.<br>> <br>> <br>> <br>> <o:p></o:p></p></div></div><br />
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