[MAIPC] Removing stiltgrass after it has gone to seed

Wed Sep 25 16:39:06 PDT 2019

Removal of plant material with seed would be great if the area is small
enough.

Research was done about ten years ago at NC State by Carrie  Schmidt
(Judge) with regard to seed bank longevity. showed generally a 5 year soil
life for Japanese Stiltgrass.

What I have found is control before seed production  in year 1 you can't
tell in year 2 that you were even there. treat again in year 2 with no seed
production and year 3 you will see improvement. then the same for 2 more
years and very little will be seen. after the 5 years then plan regular
maintenance to prevent re-infestation from outside.

Pre emergent treatment has its advantage in the first couple years as you
can treat before the "regular" weed season gets busy but plan to check and
treat post emergent as well for skips. Also, if treating post emergent, if
you start too early you may miss some that is germinating.  gives a much
smaller window of opportunity for treatments

Once down to spots then all post emergent works best time wise and
financially.

I prefer using the grass herbicide but the cost is higher. Application is
easier since you can more easily work around desirable woody and broad
leaf  plants.

Keep an eye on labels for all materials and especially the grass herbicides
since most of them do not  have forestry labeling.

Envoy Plus has an advantage with a specific note in the label allowing use
in parks.

Also recommend a non ionic surfactant, not crop oil concentrate.

when using one of the grass herbicides for Wavyleaf Basketgrass i prefer
the Clethodim materials because it has the best activity on perennial
grasses. Poast is the weakest on perennial grasses with the exception of
burmudagrass.

The Ornimec 170 may  look safer only due to its already low concentration
in the jug.

Lane

On Mon, Sep 23, 2019 at 7:35 AM Todd Hagenbuch <thagenbuch at arborchem.com>
wrote:

> Everyone:
>
>
>
> If unopposed to synthetic herbicides……..
>
> You really want to address the seed source with Stiltgrass, you’ll need to
> use a soil active herbicide in order keep the weed at bay for a number of
> years.
>
> If forestry in PA, WV, and MD we (industry) have used Oust XP for a number
> of years.  Fall rates of application would be 3 to 4 ounces per acre,
> spring could be 2 to 3 ounces per acre.  Yes, you will likely see control
> of the site through most of the next growing season.  The idea here is that
> you would be allowing for hardwood seedling establishment.  The best we
> have seen is about 2 years of Stiltgrass absence on most sites before it
> starts to move back in.  Softer residual products like Proclipse 65 WDG
> have been used in the spring before seed germination.  The Proclipse
> generally will not harm the perennial plants on the site, it will only
> control annual weeds (seed) like Japanese Stiltgrass.  This needs to be
> applied early in the spring ahead of germination to be most effective.
>
>
>
> Best Regards,
>
>
>
> Todd Hagenbuch
>
> Vegetation Mgmt. Specialist
>
> Arborchem Products
>
> 137 Lydia Lane
>
> West Chester, PA 19382
>
> 570-401-7098
>
> www.arborchem.com
>
>
>
>
>
>
>
>
>
>
>
> *From:* MAIPC <maipc-bounces at lists.maipc.org> *On Behalf Of *Jim Hurley
> *Sent:* Sunday, September 22, 2019 6:49 PM
> *To:* Rod Simmons <Rod.Simmons at alexandriava.gov>
> *Cc:* lee at ipc.us.com; Eileen Grant <granfling at aol.com>; Susan Gitlin <
> susan.mclaughlin at alumni.stanford.edu>; alex at ipc.us.com; MAIPC Listserve <
> maipc at lists.maipc.org>; jimclark5 at comcast.net
> *Subject:* Re: [MAIPC] Removing stiltgrass after it has gone to seed
>
>
>
> *CAUTION:*  This email originated from outside of the organization. Do
> not click links or open attachments unless you recognize the sender and
> know the content is safe.
>
>
>
> Rod,
>
>
>
> I've been using Sethoxydim in POAST, as well as Clethodim 2E.  Have you
> found better performance with Ornamec and fluazipop products?  Thanks!
>
>
>
>
>
> Jim
>
> -----Original Message-----
> From: Richard Gardner
> Sent: Sep 22, 2019 7:15 AM
> To: Diana Carter , Rod Simmons
> Cc: "lee at ipc.us.com" , Eileen Grant , Susan Gitlin , "alex at ipc.us.com" ,
> MAIPC Listserve , "jimclark5 at comcast.net"
> Subject: Re: [MAIPC] Removing stiltgrass after it has gone to seed
>
> Has anyone considered using horticultural vinegar? It is organic,
> biodegradable, easy to clean up and much less toxic than most agricultural
> chemicals.
>
>
>
>
>
> On Saturday, September 21, 2019, 09:50:29 PM EDT, Rod Simmons <
> Rod.Simmons at alexandriava.gov> wrote:
>
>
>
>
>
> Thanks Susan - good work!  This past week we have been foliar-treating
> Microstegium in the City of Alexandria, Virginia with grass-specific
> Ornamec (fluzipop), instead of Vantage (sethoxydim).
>
>
>
> Alternatively, Jim Clark and Eileen Grant hand-pulled and bagged a large
> patch of Microstegium from Forest Park.
>
>
>
> I consider the latter method ideal for smaller, incipient populations.
>
>
>
> Thanks,
>
>
>
> Rod
>
>
>
>
>
> > On Sep 21, 2019, at 9:07 PM, Diana Carter <dcarter1776 at yahoo.com> wrote:
>
> >
>
> > Hi Susan. I’m anxious to hear from those wiser than me, but I’ll share
> what I’ve done just based on my gut sense of it. First, I think there is a
> lot more seed production pending based on what I’m seeing. So my sense is
> to get it out before the whole load drops. On bad infestations I have
> rolled it up to contain the seeds within the stalks. On milder infestations
> I have used a tub type container on its side and pushed the stiltgrass in
> seed first. Then I’ve poured it into large bags which I sneak into the
> regular trash pickup.
>
> >
>
> > You make a good point about checking shoes afterwards. I will add that
> to my method. But I (like you) am hoping to learn from others and see what
> they are doing at this time of the year.  I suppose spraying may be an
> option but I never use herbicides. I have heard that glyphosate dries out
> cornstalks late in the season.
>
> >
>
> > Diana Carter
>
> >
>
> > On Sep 21, 2019, at 8:10 PM, Susan Gitlin <
> susan.mclaughlin at alumni.stanford.edu> wrote:
>
> >
>
> > Hi.  Today I was at a property that is built on and into the edge of
> national forest land, outside of Waynesboro, VA.  This property has some
> new buildings around which I noticed a bunch of stiltgrass.  The forest
> land surrounding these buildings looked clean of any infestations.
>
> >
>
> > I mentioned this to the property owner, and he was sincere in his
> interest in removing the Microstegium.  I could not stay there to do the
> removal myself at the time, but I promised him I would send him information
> on how to do it.
>
> >
>
> > However, the plant is now in seed, and all information that I have about
> stiltgrass recommends removal or weed whacking prior to seed development.
> That makes sense, of course, but what should I recommend to the property
> owner?
>
> > a) That he remove and bag it this year?  Could that lead to additional
> spread of the seeds via shoes, bags, etc.?
>
> > b) Or should he wait until next year, thus allowing a thousand plants to
> release their seeds?
>
> >
>
> > Please share your wisdom.
>
> >
>
> > Thank you.
>
> >
>
> > --Susan
>
> > _______________________________________________
>
> > MAIPC mailing list
>
> > MAIPC at lists.maipc.org
>
> >
> https://gcc01.safelinks.protection.outlook.com/?url=http%3A%2F%2Flists.maipc.org%2Flistinfo.cgi%2Fmaipc-maipc.org&data=02%7C01%7Crod.simmons%40alexandriava.gov%7Cb2b6cc2b7ac44b69019908d73ef93b55%7Cfeaa9b3143754aeeadccc76ad32a890b%7C0%7C1%7C637047112482785909&sdata=BMm1Uq9m0x6uXXyQwaAWdWSN%2Fj%2BONHr%2Bl0%2BQlccBY3M%3D&reserved=0
>
> >
>
> > _______________________________________________
>
> > MAIPC mailing list
>
> > MAIPC at lists.maipc.org
>
> >
> https://gcc01.safelinks.protection.outlook.com/?url=http%3A%2F%2Flists.maipc.org%2Flistinfo.cgi%2Fmaipc-maipc.org&data=02%7C01%7Crod.simmons%40alexandriava.gov%7Cb2b6cc2b7ac44b69019908d73ef93b55%7Cfeaa9b3143754aeeadccc76ad32a890b%7C0%7C1%7C637047112482795903&sdata=WfLYeLaI9cT4qSbMhKvegpRrjxyVxnGJkSTsYY8EfHw%3D&reserved=0
>
> _______________________________________________
>
> MAIPC mailing list
>
> MAIPC at lists.maipc.org
>
> http://lists.maipc.org/listinfo.cgi/maipc-maipc.org
> <https://linkprotect.cudasvc.com/url?a=http%3a%2f%2flists.maipc.org%2flistinfo.cgi%2fmaipc-maipc.org&c=E,1,sPn7tu2zZVMQPoI18BiNsgdURmZhxIyt33t3uclb_6C1uWkL35TJXHTirsTU_Lp4Sui8jmmXHNZhpWHnWFZe0kB_yyLDFB-25b7qZiQP0ATq&typo=1>
>
> _______________________________________________
> MAIPC mailing list
> MAIPC at lists.maipc.org
> http://lists.maipc.org/listinfo.cgi/maipc-maipc.org
>

-- 
Lane Heimer
Administrator - Noxious Weed Control
Maryland Department of Agriculture
50 Harry S Truman Pkwy.
Annapolis, MD 21401

301-667-9376 Cell
410-841-5920 Office

-- 
Visit Our Website at: www.mda.maryland.gov <http://www.mda.maryland.gov/>

 <http://facebook.com/MdAgDept>  <http://twitter.com/mdagdept>  
<http://www.flickr.com/photos/mdagdept>  
<https://www.youtube.com/channel/UCN3dEV5ddJYbGQu64h79tgg>  
<http://www.instagram.com/MdAgDept>  <http://www.soundcloud.com/MdAgDept>

Click here to complete a three question customer experience survey. 
<http://www.doit.state.md.us/selectsurvey/TakeSurvey.aspx?agencycode=MDA&SurveyID=86M2956#>

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.maipc.org/pipermail/maipc-maipc.org/attachments/20190925/3897a174/attachment-0001.html>