[MAIPC] question about knotweed

[Todd Hagenbuch]

Celia:

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.

Best Regards,


Todd Hagenbuch
Vegetation Management Specialist
Arborchem Products
2505 Coventry Lane
Glen Mills, PA 19342
570-401-7098
thagenbuch at arborchem.com<mailto:thagenbuch at arborchem.com>
www.arborchem.com<http://www.arborchem.com/>



From: MAIPC [mailto:maipc-bounces at lists.maipc.org] On Behalf Of Celia V. Martin
Sent: Tuesday, April 21, 2015 9:25 AM
To: maipc at lists.maipc.org
Subject: [MAIPC] question about knotweed

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?

Thank you.
C

Celia V. Martin
301-325-5301
celiavmartin at comcast.net<mailto:celiavmartin at comcast.net>

AppleTree Institute awarded a US Dept of Ed Investing in Innovation ("i3") grant for Every Child Ready. Read more at: www.appletreeinstitute.org<http://www.appletreeinstitute.org>

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.maipc.org/pipermail/maipc-maipc.org/attachments/20150423/84d4ee72/attachment.htm>