<div dir="ltr"><div>I would just emphasize the importance of treating an *extremely* fresh cut. And I have a feeling for whatever it's worth that a water-based rather than oil-based treatment will be better for cut stump.</div><div><br></div><div>One other thing, just a reminder that there was the incident a few years ago where someone suffered cardiac symptoms after cutting Ailanthus. See for example:</div><div><br></div><div><a href="https://www.health.harvard.edu/newsletter_article/Heart_Beat_Tree_of_heaven_may_be_hard_on_the_heart">https://www.health.harvard.edu/newsletter_article/Heart_Beat_Tree_of_heaven_may_be_hard_on_the_heart</a></div><div><br></div><div>So it may be wise to take extra precautions to avoid exposure! Best and cheers, Steve<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Aug 11, 2023 at 3:09 PM Ossi, Damien (DOEE) <<a href="mailto:damien.ossi@dc.gov">damien.ossi@dc.gov</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div class="msg1961486026684978695">
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<p class="MsoNormal">Thanks, everyone, for your responses. This was very helpful. I have been pushing for the hack-and-squirt method, but it looks like we only have the funding for one visit to each site. I’ll keep the listserv updated on our results using
cut-stump methods on ailanthus (using either basal oil or water-based triclopyr on the cut surfaces).<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal">Damien<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal"><b>Damien Ossi<u></u><u></u></b></p>
<p class="MsoNormal"><i><span style="font-size:10pt">Wildlife Biologist</span></i><span style="font-size:10pt"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:10pt">Fisheries and Wildlife Division<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:10pt">Department of Energy and Environment<u></u><u></u></span></p>
<p class="MsoNormal" style="background:white"><span style="font-size:10pt;color:black">202-741-0840</span><span style="font-size:10pt;color:rgb(40,40,40)"><br>
<a href="mailto:damien.ossi@dc.gov" target="_blank">damien.ossi@dc.gov</a><u></u><u></u></span></p>
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<p class="MsoNormal"><b>From:</b> MAIPC <<a href="mailto:maipc-bounces@lists.maipc.org" target="_blank">maipc-bounces@lists.maipc.org</a>> <b>On Behalf Of
</b>Mims, Ray<br>
<b>Sent:</b> Wednesday, August 9, 2023 3:05 PM<br>
<b>To:</b> Jeffrey Branham <<a href="mailto:jbranham@prescott.edu" target="_blank">jbranham@prescott.edu</a>><br>
<b>Cc:</b> MAIPC Listserve <<a href="mailto:maipc@lists.maipc.org" target="_blank">maipc@lists.maipc.org</a>><br>
<b>Subject:</b> Re: [MAIPC] [EXTERNAL] Re: Basal oil on ailanthus as stump treatment<u></u><u></u></p>
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<p class="MsoNormal" style="margin-bottom:12pt">All the literature I have seen indicates that is the best method. <u></u><u></u></p>
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<p class="MsoNormal">Ray<u></u><u></u></p>
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<p class="MsoNormal" style="margin-bottom:12pt">On Aug 9, 2023, at 3:02 PM, Jeffrey Branham <<a href="mailto:jbranham@prescott.edu" target="_blank">jbranham@prescott.edu</a>> wrote:<u></u><u></u></p>
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<p class="MsoNormal"> <u></u><u></u></p>
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<p class="MsoNormal">What do folks think about winter basal oil treatments?<u></u><u></u></p>
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<p class="MsoNormal">On Tue, Aug 8, 2023 at 10:58 AM Conner McBane <<a href="mailto:cmcbane@appalachiantrail.org" target="_blank">cmcbane@appalachiantrail.org</a>> wrote:<u></u><u></u></p>
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<p class="MsoNormal"><span style="font-size:12pt;color:black">Hey Damien, <u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:12pt;color:black">We use Garlon 4 and basal oil on ailanthus a lot in Southwest and Central Virginia with great results. I have used both glyphosate and triclopyr on ailanthus and I've found anecdotally that triclopyr
always works best for this species. <u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:12pt;color:black">We use 20% triclopyr and 80% basal oil mix and we have leaned towards hack and squirt and basal bark. I have had good success with basal bark on ailanthus, but you use more chemical and some non-target
treatment will happen depending on proximity. With that said, we use the same mix for autumn olive and bush honeysuckle as a basal bark for anything too large to foliar and it works really well for that application too. Basal bark treatment should wait at
least 30 days before cutting. I do not recommend cut-stump treatment for ailanthus because you don't have enough translocation to the entire root system and a lot of suckers are likely. If you HAVE to do a cut-stump treatment and they are large DBH I would
treat the cut surface and buttress roots/stem. You will probably have some resprouts, but you can try to foliar those as they come up. <u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:12pt;color:black">Once you treat standing ailanthus, the stems are likely to drop within 2 years' time so just be aware of that additional hazard if you go that route in the future. You can also buy some PathFinder
II which is basal oil/triclopyr RTU herbicide at 20% and it saves the hassle of mixing, but it is a little bit more expensive. <u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:12pt;color:black">Let me know if you have any other questions and I'm happy to help! I also have a contractor who can help out up there, they are located in Charlottesville, but willing to travel. <u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:12pt;color:black"><u></u> <u></u></span></p>
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<p class="MsoNormal"><span style="font-size:12pt;color:black">Cheers,<u></u><u></u></span></p>
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<p style="margin:0in;background:white"><span style="font-size:10pt;font-family:"Arial",sans-serif;color:black">Conner McBane</span><span style="font-size:11.5pt;font-family:"Segoe UI",sans-serif;color:black"><u></u><u></u></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-size:10pt;font-family:"Arial",sans-serif;color:black">Natural Resource Manager</span><span style="font-size:11.5pt;font-family:"Segoe UI",sans-serif;color:black"><u></u><u></u></span></p>
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<p class="MsoNormal" style="background:white"><span style="font-size:10pt;font-family:"Arial",sans-serif;color:black">Appalachian Trail Conservancy</span><span style="font-size:10pt;font-family:"Segoe UI",sans-serif;color:black"><br>
</span><span style="font-size:10pt;font-family:"Arial",sans-serif;color:black">416 Campbell Ave | Suite 101</span><span style="font-size:10pt;font-family:"Segoe UI",sans-serif;color:black"><br>
</span><span style="font-size:10pt;font-family:"Arial",sans-serif;color:black">Roanoke, VA 24016</span><span style="font-size:10pt;font-family:"Segoe UI",sans-serif;color:black"><br>
</span><span style="font-size:10pt;font-family:"Arial",sans-serif;color:black">Phone: 540-427-7098</span><span style="font-size:10pt;font-family:"Segoe UI",sans-serif;color:black"><br>
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<p class="MsoNormal" style="background:white"><span style="font-size:10pt;font-family:"Segoe UI",sans-serif;color:black">cmcbane<a href="mailto:eprice@appalachiantrail.org" target="_blank">@appalachiantrail.org</a></span><span style="font-size:11.5pt;font-family:"Segoe UI",sans-serif;color:rgb(33,33,33)"><u></u><u></u></span></p>
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<p class="MsoNormal"><b><span style="color:black">From:</span></b><span style="color:black"> MAIPC <<a href="mailto:maipc-bounces@lists.maipc.org" target="_blank">maipc-bounces@lists.maipc.org</a>> on behalf of Ossi, Damien (DOEE) <<a href="mailto:damien.ossi@dc.gov" target="_blank">damien.ossi@dc.gov</a>><br>
<b>Sent:</b> Monday, August 7, 2023 10:48 AM<br>
<b>To:</b> 'MAIPC Listserve' <<a href="mailto:maipc@lists.maipc.org" target="_blank">maipc@lists.maipc.org</a>><br>
<b>Subject:</b> [MAIPC] Basal oil on ailanthus as stump treatment</span> <u></u><u></u></p>
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<p class="MsoNormal"> <u></u><u></u></p>
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from outside of the organization. Do not click links or open attachments unless you recognize the sender and know the content is safe.</span></b><span style="font-size:10pt;font-family:"Arial",sans-serif;color:black"><u></u><u></u></span></p>
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<p style="margin:0in">Hi MAIPC members,<u></u><u></u></p>
<p style="margin:0in"> <u></u><u></u></p>
<p style="margin:0in">Does anyone use oil-based triclopyr rather than water-based on ailanthus as a stump-cut treatment? We’re looking to remove a large number of ailanthus in DC before the spotted lanternflies arrive in force, and the vendor is proposing
to do a stump-cut treatment with triclopyr. I want to recommend that they use Garlon-4 or equivalent rather than Garlon-3a or equivalent, because the herbicide can be applied to both the sapwood on the stump and the bark on base of the stump. But I also
saw a study from Italy that indicated that glyphosate is better for stump-cut treatment of ailanthus.<u></u><u></u></p>
<p style="margin:0in"> <u></u><u></u></p>
<p style="margin:0in">The trees must be removed at the time of treatment, so using hack-and-squirt or typical basal bark treatments won’t fly. Any advice from the membership?<u></u><u></u></p>
<p style="margin:0in"> <u></u><u></u></p>
<p style="margin:0in">Thanks,<u></u><u></u></p>
<p style="margin:0in">Damien <u></u><u></u></p>
<p style="margin:0in"> <u></u><u></u></p>
<p style="margin:0in"> <u></u><u></u></p>
<p style="margin:0in"><b>Damien P. Ossi</b><u></u><u></u></p>
<p style="margin:0in">Wildlife Biologist<u></u><u></u></p>
<p style="margin:0in">Fisheries & Wildlife Division<u></u><u></u></p>
<p style="margin:0in">Department of Energy & Environment<u></u><u></u></p>
<p style="margin:0in">Government of the District of Columbia<u></u><u></u></p>
<p style="margin:0in">1200 First Street NE, 5th Floor<u></u><u></u></p>
<p style="margin:0in">Washington, DC 20002<u></u><u></u></p>
<p style="margin:0in">(202) 741-0840<u></u><u></u></p>
<p style="margin:0in"><a href="mailto:damien.ossi@dc.gov" target="_blank">damien.ossi@dc.gov</a><u></u><u></u></p>
<p style="margin:0in"> <u></u><u></u></p>
<p style="margin:0in"> <u></u><u></u></p>
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<p class="MsoNormal"><span class="m_1961486026684978695gmailsignatureprefix">-- </span><u></u><u></u></p>
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<p class="MsoNormal">Cheers,<br>
JB<u></u><u></u></p>
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