[MAIPC] Stiltgrass control
Margaret Chatham
margaret.chatham at verizon.net
Mon Sep 23 16:09:29 PDT 2013
I can definitely cite Fraser Preserve in Northern Virginia as an example of
stilt grass growing exuberantly in the shade under high canopy, but fading
out in a ring around lower-growing, more densely shading trees such as young
beech & maple, pawpaw, American holly, and blackhaw.
Margaret Chatham
Falls Church, VA
On 9/23/13 5:20 PM, "Steve Young" <steveyoung at aol.com> wrote:
> The other issue with deer is that they spread around Microstegium seed from
> their hooves and fur as they travel, so that infestations appear to grow
> faster and denser where there are many deer. We humans also are culprits in
> spreading the seed via our own disturbance. In Northern Virginia, I have seen
> dense stiltgrass stands in fairly shady areas, so I am not convinced that
> shading makes that much difference. although surely it helps. Any way you look
> at it, the deer contribute to the problem. Cheers,
>
> Steve Young
> Arlington VA
>
>
>
> On Mon, Sep 23, 2013 at 3:54 PM, Landandforest <landandforest at gmail.com>
> wrote:
>> I agree that deer management should be utilized as another tool In the
>> toolbox of IPM as well as light manipulation and herbicides to combat
>> invasives. I have noticed the ring around American beech where I currently am
>> applying pre-emergent control for next growing season in heavily infested
>> forest stands of Japanese stilt grass and mile-a-minute. I wish we could get
>> the Crummies Creek virus or blight to infest our stilt grass populations in
>> south central PA and central MD.
>>
>> Sent from my iPhone
>>
>> On Sep 23, 2013, at 3:49 PM, <rachel at fohvos.org> wrote:
>>
>>> Unfortunately, deer do not eat the stiltgrass.
>>>
>>> Deer browse the natives, which has left the forests of central NJ without a
>>> sapling, shrub, and herb layer. More light reaches the forest floor.
>>>
>>> In healthy forests, with less deer pressure, there native plants below the
>>> canopy level. These plants create a level of shade that significantly
>>> reduces or eliminates the presence of stiltgrass.
>>>
>>> I've observed this to be true in upland, mesic, and lowland forests.
>>>
>>> I'd been interested if anyone else has observed the stiltgrass-free ring
>>> that occurs beneath a robust shrub or sapling.
>>>
>>> Deer management is a great tool in invasive species control, right next to
>>> herbicide.
>>>
>>> Rachel
>>>
>>>
>>>
>>>
>>>
>>>
>>> Rachel Mackow
>>> Land Steward / NJISST Central Region Coordinator
>>>
>>> Friends of Hopewell Valley Open Space
>>> P.O. Box 395, Pennington, NJ 08534
>>> Tel: (609) 730-1560 <tel:%28609%29%20730-1560> Fax: (609) 730-1561
>>> <tel:%28609%29%20730-1561>
>>> http://www.fohvos.org/
>>>
>>>
>>>
>>>
>>>> -------- Original Message --------
>>>> Subject: Re: [MAIPC] Stiltgrass control
>>>> From: Kathi Mestayer <kwren at widomaker.com>
>>>> Date: Mon, September 23, 2013 3:20 pm
>>>> To: <rachel at fohvos.org>
>>>> Cc: maipc at lists.maipc.org
>>>>
>>>> wow. Send some of your deer down our way....ours aren't eating the
>>>> stiltgrass at all. And it's flourishing in full shade. Maybe that's just
>>>> because it's so much hotter down here?
>>>> k
>>>>
>>>>
>>>> Kathi Mestayer
>>>> KMA Consulting
>>>> 105 Gilley Drive
>>>> Williamsburg, Va 23188
>>>> kwren at widomaker.com
>>>> 757-229-6575 <tel:757-229-6575>
>>>> 757-229-9396 <tel:757-229-9396> (fax)
>>>>
>>>> "There are 10 kinds of people -- people who understand binary and people
>>>> who don't."
>>>> - Anon.
>>>>
>>>>
>>>>
>>>>
>>>> On Sep 23, 2013, at 12:37 PM, <rachel at fohvos.org> wrote:
>>>>
>>>> Hi Marc,
>>>> In forest habitats, Stiltgrass is usually controlled by shade cast by
>>>> native seedlings, shrubs and small trees, as well as herbs and grasses.
>>>> Most of these forms of plant life are browsed excessively, however...
>>>>
>>>> In deer exclosures, jewelweed is a great control method. Is deer management
>>>> an option on the preserve and adjacent parcels?
>>>>
>>>> On a very limited basis, I have smothered the seeds with oak leaves removed
>>>> from my driveway. I placed the leaves in a forest exclosure beneath a red
>>>> maple canopy. This is feasible in garden-like situations.
>>>>
>>>> Rachel
>>>>
>>>>
>>>> Rachel Mackow
>>>> Land Steward / NJISST Central Region Coordinator
>>>>
>>>> Friends of Hopewell Valley Open Space
>>>> P.O. Box 395, Pennington, NJ 08534
>>>> Tel: (609) 730-1560 <tel:%28609%29%20730-1560> Fax: (609) 730-1561
>>>> <tel:%28609%29%20730-1561>
>>>> http://www.fohvos.org <http://www.fohvos.org/> /
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>>
>>>>> -------- Original Message --------
>>>>> Subject: Re: [MAIPC] Stiltgrass control
>>>>> From: Bruce Barbour <barbour at RCE.Rutgers.edu>
>>>>> Date: Wed, September 04, 2013 10:42 am
>>>>> To: maipc at lists.maipc.org
>>>>>
>>>>>
>>>>> Marc,
>>>>> I notice you did mention herbicides. Research has shown effectiveness of
>>>>> crabgrass pre-emergent herbicides on stiltgrass and, if the site warrants
>>>>> it, you can also kill stiltgrass with post emergent selective grass
>>>>> herbicides such as Poast and Fusilaide. Of course, depending on your state
>>>>> law and the material selected there may be a requirement to have the
>>>>> application done by a certified pesticide applicator.
>>>>> Bruce
>>>>> ================================================== Bruce Barbour Voice:
>>>>> 908-475-6505 <tel:908-475-6505> Ag & Resource Management Agent Fax:
>>>>> 908-475-6514 <tel:908-475-6514> Rutgers Cooperative Extension Mobile:
>>>>> 908-309-7660 <tel:908-309-7660> RCE of Warren County 165 Route 519 South
>>>>> Belvidere, N.J. 07823-1949 Internet: Barbour at Aesop.Rutgers.Edu
>>>>> ===================================================== Learn more about the
>>>>> Rutgers Environmental Stewards at http://envirostewards.rutgers.edu/ On
>>>>> 9/4/2013 8:00 AM, Marc Imlay wrote:
>>>>>
>>>>>
>>>>>>
>>>>>> How is Japanese Stiltgrass control going on in your park?
>>>>>>
>>>>>>
>>>>>>
>>>> This year I have had the ability to only remove all the Japanese Stiltgrass
>>>> over 150 acres at the 200 acre Ruth B. Swann Park in Charles county, MD. We
>>>> have removed all the stiltgrass every year since 2004. It should be
>>>> gone since the seed bank is supposed to be only 5 years. When I removed all
>>>> the stiltgrass in the 200 acre Swann Park in the last decade stiltgrass was
>>>> gone by the 5th year and almost gone by the 4th year.
>>>>
>>>
>>>
>>>
>>>
>>>
>>> So what has changed? Climate change is one answer. For the past few years in
>>> an open area at Swann Park I would remove all the stilt gras and beefsteak
>>> plant in July and come back in late August to remove late emergents. The
>>> amount of work in August was only 10% of the amount of work in July. Now it
>>> is an equal amount. In fact, I had to remove beefsteak plant 3 times to be
>>> sure I got late emergents.
>>>
>>>
>>>
>>> Other explanations include deer movement and movement of stiltgrass down
>>> streams. 90 % of the massive new populations that have sudenly apppeared at
>>> Swann Park are not near streams and not where people use the park. Deer may
>>> be more effective in bringing in stiltgrass since the areas contiguous with
>>> Swann Park are now covered with stiltgrass so it is easier to come in. So
>>> stiltgrass is probably moving in by deer and water from abundant sources
>>> from outside of the park.
>>>
>>>
>>>
>>>
>>> In conclusion, we have three choices. We can apply for a large crew to join
>>> us to control stiltgrass.
>>>
>>>
>>>
>>> Or we can give up.
>>>
>>>
>>>
> For a third choice please look for stiltgrass dying from leaf blight. My major
> concern about waiting for the leaf blight bio-control to become available
> years from now is stiltgrass moving in to the massive pristine areas of
> the 200 acre park. I found one such patch, about 10' x 20' in early September
> last year in the middle of Swann Park. I left the contiguous stiltgrass
> untreated slightly down the hill for about 20' and will check it out next
> week. If you find such a patch there are researchers that may be interested in
> looking at the patch.
>
> Marc Imlay, PhD
> Chair of the Biodiversity and Habitat Stewardship Committee for the Maryland
> Chapter of the Sierra Club.
>
>
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