[MAIPC] FW: Stilt grass question

[Earl "Bud" Reaves Jr.]

I think it may be a soil condition, specifically a low pH from the
accumulation of leaf debris.  Stilt grass is known to prefer more basic
soils.

On Mon, Sep 28, 2015 at 8:46 AM, tomnjan2 <tomnjan2 at comcast.net> wrote:

> There were areas that little light was clearly at play, but a blanketed
> grass area with a lone Holly still didn't have grass below. Tree heights
> were mixed, and many were in significant sunlight as well. This variety of
> holly is more open than common garden type.
> Jan
>
> Sent from my iPad
>
> On Sep 28, 2015, at 8:03 AM, "Hughes, Jake" <jake_hughes at nps.gov> wrote:
>
> My guess is that light limitation is at work.  Cole and Weltzin found the
> same pattern with paw paw (Asimina triloba):
>
> Cole, P.G. and J.F. Weltzin. 2005. Light limitation creates patchy
> distribution of an invasive grass in eastern deciduous forests. Biological
> Invasions 7(3): 477-488.
>
>
>
>
> On Mon, Sep 28, 2015 at 6:27 AM, Marc Imlay <ialm at erols.com> wrote:
>
>> *Any response for Tom and Jan?*
>>
>> *Marc Imlay, PhD, **Chair, Biological control working Group *
>>
>> *Conservation biologist, Park Ranger Office, Non-native Invasive Plant
>> Control coordinator.*
>> *(301) 442-5657 <%28301%29%20442-5657> cell  *ialm at erols.com
>>
>>
>> *Natural and Historical Resources DivisionThe  Maryland-National
>> Capital   Park  and Planning Commission**www.pgparks.com
>> <http://www.pgparks.com/>*
>>
>>
>>
>>
>>
>>
>>
>> -----Original Message-----
>> From: tomnjan2 [mailto:tomnjan2 at comcast.net]
>> Sent: Monday, September 28, 2015 12:16 AM
>> To: Marc Imlay <ialm at erols.com>
>> Subject: Stilt grass question
>>
>>
>>
>> Hi Marc,
>>
>> Tom (Crone) and I were walking around the back end of Greenbelt Park
>> today. He was checking on some multiflora rose he'd cut earlier as well
>> stilt grass he cut. But I noticed something I hadn't before. There were
>> large swathes of stilt grass that had bare patches within those areas. The
>> common denominator was Holly tree leaf shed. We started searching elsewhere
>> and found the same correlation. The stilt grass totally avoided wherever
>> the dropped holly leaves landed. Have you seen this before, or know if
>> there's a specific chemical in the leaf that inhibits or kills the grass?
>> Or some other symbiotic relationship creating the inhibition? I'm really
>> curious to know. As we were driving out of the park, I started looking at
>> the mountain laurel and what I saw didn't seem to be surrounded by stilt
>> grass either.
>>
>>
>>
>> thanks
>>
>> Jan Steiner
>>
>>
>>
>> Sent from my iPad=
>>
>>
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>
>
> --
> Jake Hughes
> Lead Biological Science Technician
> Shenandoah National Park
> 3655 US Hwy 211 E
> Luray, VA 22835
> Jake_Hughes at nps.gov
> Office: 540-999-3500 ext 3492
> Fax: 540-999-3697
>
>
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-- 
Earl "Bud" Reaves,
County Forester
Licensed Forester, ISA Certified ArboristÒ
2664 Riva Road
Annapolis, Maryland 21401 MS #6201
410.222.7441 X3230  Fax: 410.222.7752
http://www.mdinvasivesp.org/index.html
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