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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-size:12.0pt;font-family:"Arial",sans-serif;color:#1F497D'>For a small patch, I have had 100% success with foliar spray about waist to chest high. I casually and safely sprayed some of the under sides of the leaves. Without the underside treatment component I did not get 100% success. <o:p></o:p></span></b></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><b><span style='font-size:12.0pt;font-family:"Arial",sans-serif;color:#1F497D'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span style='font-family:"Times New Roman",serif;color:blue'>Marc Imlay, PhD,</span></b><b><span style='font-family:"Arial",sans-serif;color:blue'> </span></b><b><span style='font-size:12.0pt;font-family:"Arial",sans-serif;color:blue'>Conservation biologist, Park Ranger Office, Non-native Invasive Plant Control coordinator.</span></b><b><span style='font-size:12.0pt;color:blue'> </span></b><b><span style='font-size:12.0pt;font-family:"Times New Roman",serif;color:blue'><br></span></b><b><span style='font-size:12.0pt;font-family:"Arial",sans-serif;color:blue'><a href="tel:%28301%29%20442-5657" target="_blank">(301) 442-5657</a> cell </span></b><span style='font-size:12.0pt;color:#1F497D'><a href="mailto:ialm@erols.com" target="_blank" title="blocked::mailto:ialm@erols.com">ialm@erols.com</a></span><b><span style='font-size:12.0pt;font-family:"Times New Roman",serif;color:#1F497D'><br></span></b><b><span style='font-size:12.0pt;color:blue'>Natural and Historical Resources Division</span></b><b><span style='font-size:12.0pt;font-family:"Times New Roman",serif;color:blue'><br></span></b><b><span style='font-size:12.0pt;color:blue'>The Maryland-National Capital Park and Planning Commission</span></b><b><span style='font-size:12.0pt;font-family:"Times New Roman",serif;color:blue'><br></span></b><b><span style='font-size:12.0pt'><a href="http://www.pgparks.com/" target="_blank" title="blocked::http://www.pgparks.com/
blocked::http://www.pgparks.com/
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blocked::blocked::blocked::http://www.pgparks.com/
blocked::blocked::http://www.pgparks.com/
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blocked::http://www.pgpa"><span style='text-decoration:none'>www.pgparks.com</span></a></span></b><b><span style='font-size:12.0pt;font-family:"Times New Roman",serif;color:blue'> </span></b><b><span style='font-size:10.0pt;font-family:"Times New Roman",serif;color:blue'> </span></b><span style='color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><span style='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>From:</b> MAIPC [mailto:maipc-bounces@lists.maipc.org] <b>On Behalf Of </b>Todd Hagenbuch<br><b>Sent:</b> Thursday, April 23, 2015 7:13 AM<br><b>To:</b> Celia V. Martin; maipc@lists.maipc.org<br><b>Subject:</b> Re: [MAIPC] question about knotweed<o:p></o:p></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='color:#1F497D'>Celia:<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Based on a Penn State Study, it is better to let the Japanese Knotweed stalks get full height by early June then cut them down. They will grow back to about waist to chest high by late August/early September. At that point, a high volume application(truck mounted hydraulic sprayer) of Rodeo 2-3 qts per 100 gallons of water + surfactant 1-2 qts per 100 gallons of water. Application volume should be around 150-200 gallons per acre(really soak down the Knotweed). This combination has shown to reduce the Knotweed by 95% or so. A follow up the next season would be prudent. For more information on this, Art Gover from Penn State can be a great resource. <o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Best Regards,<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Berlin Sans FB";color:#1F497D'>Todd Hagenbuch<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Berlin Sans FB";color:#1F497D'>Vegetation Management Specialist<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Berlin Sans FB";color:#1F497D'>Arborchem Products <o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Berlin Sans FB";color:#1F497D'>2505 Coventry Lane<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Berlin Sans FB";color:#1F497D'>Glen Mills, PA 19342<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Berlin Sans FB";color:#1F497D'>570-401-7098<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Berlin Sans FB";color:#1F497D'><a href="mailto:thagenbuch@arborchem.com">thagenbuch@arborchem.com</a><o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Berlin Sans FB";color:#1F497D'><a href="http://www.arborchem.com/">www.arborchem.com</a><o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma",sans-serif'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma",sans-serif'> MAIPC [<a href="mailto:maipc-bounces@lists.maipc.org">mailto:maipc-bounces@lists.maipc.org</a>] <b>On Behalf Of </b>Celia V. Martin<br><b>Sent:</b> Tuesday, April 21, 2015 9:25 AM<br><b>To:</b> <a href="mailto:maipc@lists.maipc.org">maipc@lists.maipc.org</a><br><b>Subject:</b> [MAIPC] question about knotweed<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>If we cut the knotweed buds now, does it have any effect on the stalk’s growth? What is the most efficient way to deal with it?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thank you.<o:p></o:p></p><p class=MsoNormal>C<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Celia V. Martin<o:p></o:p></p><p class=MsoNormal>301-325-5301<o:p></o:p></p><p class=MsoNormal><a href="mailto:celiavmartin@comcast.net">celiavmartin@comcast.net</a><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>AppleTree Institute awarded a US Dept of Ed Investing in Innovation ("i3") grant for Every Child Ready. Read more at: <u><span style='color:#3333FF'><a href="http://www.appletreeinstitute.org" target="_blank">www.appletreeinstitute.org</a></span></u><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p></div>
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