[MAIPC] FW: Stilt grass question

Dewey historictimekeepers at gmail.com
Mon Sep 28 10:00:15 PDT 2015 

Marney,

You may also be getting the "mulch effect".  NYS DEC has done work at 
Minnewaska SP that suggests mulching stiltgrass along trails suppresses it.

Regards,
  
Dewey Clark,
g

On 9/28/2015 12:49 PM, MarneyB wrote:
>
> Oak leaves, too. For the same reasons. I have kept much of my property 
> free of stilt grass by mulching with the leaves from my pin oak 
> (topped with pine needles so the leaves don’t blow away).
>
> Marney
>
> *From:*MAIPC [mailto:maipc-bounces at lists.maipc.org] *On Behalf Of 
> *Ellis, Michael
> *Sent:* Monday, September 28, 2015 9:49 AM
> *To:* Earl "Bud" Reaves Jr.; tomnjan2
> *Cc:* INVASIVES at listserv.umd.edu; MA-IPC MA-IPC
> *Subject:* Re: [MAIPC] FW: Stilt grass question
>
> I agree with Bud, and I was going to say Hollies and 
> laurels/rhododendrons/azaleas generally prefer to grow in acidic 
> soils.  You should also notice less stilt grass growing in pine 
> forests and under large pines due to acidity of decomposing pine needles.
>
> I'd further venture to say the rate of decomposition of the strong 
> holly and laurel leaves may be playing a role. The dense 
> lignin/cellulose content of holly leaves means it takes at least two 
> years for the leaves to break down.  My thought is that these trees 
> may be self mulching and stilt grass may have a hard time establishing 
> in areas of dense, long lasting leaf litter.
>
> Michael Ellis
> Non-Native Invasive Plant Specialist
> Natural and Historical Resources Division, Park Ranger Office
> The Maryland-National Capital Park and Planning Commission
> www.pgparks.com <http://www.pgparks.com>
>
> 240-429-5042 <tel:240-429-5042>
>
> _____________________________
> From: Earl "Bud" Reaves Jr. <ipreav00 at aacounty.org 
> <mailto:ipreav00 at aacounty.org>>
> Sent: Monday, September 28, 2015 9:30 AM
> Subject: Re: [MAIPC] FW: Stilt grass question
> To: tomnjan2 <tomnjan2 at comcast.net <mailto:tomnjan2 at comcast.net>>
> Cc: MA-IPC MA-IPC <maipc at lists.maipc.org 
> <mailto:maipc at lists.maipc.org>>, <INVASIVES at listserv.umd.edu 
> <mailto:INVASIVES at listserv.umd.edu>>
>
>
>
> 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 
> <mailto: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 
> <mailto: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
>     <mailto: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 <tel:%28301%29%20442-5657> cell *ialm at erols.com
>     <mailto:ialm at erols.com>*
>     **Natural and Historical Resources Division
>     The  Maryland-National   Capital Park  and Planning Commission
>     www.pgparks.com <http://www.pgparks.com/>***
>
>     **
>
>     -----Original Message-----
>     From: tomnjan2 [mailto:tomnjan2 at comcast.net
>     <mailto:tomnjan2 at comcast.net>]
>     Sent: Monday, September 28, 2015 12:16 AM
>     To: Marc Imlay <ialm at erols.com <mailto: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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