[MAIPC] FW: Stilt grass question
Dewey
historictimekeepers at gmail.com
Tue Sep 29 13:47:29 PDT 2015
Thanks for the clarification Alyssa. I came across the cite earlier in
the year (via Cornell I think?) and I tend to store the bottom line.
Apologies.
I think your work has implications for trails that are in lightly
infested areas here in the Mid Atlantic. Not sure anything can be done
with the 500 acre monocultures that seem to be popping up though.
I think your work may help explain the recent explosion we have seen on
our trails. About 5 years ago we had a massive gypsy moth problem that
killed the oaks on ridges (removing leaf much and acid) . Since the
tread is bare soil and now well exposed to sun, the stiltgrass just
started running.
Could be it is important to get the trails mulched when such events
occur. Of course, who pays and gets it done is the $20,000 question.
Regards,
Dewey Clark,
Club Naturalist
Potomac Appalachian Trail Club
On 9/29/2015 4:35 PM, Reid, Alyssa (PARKS) wrote:
>
> Hi Everyone,
>
> Just to clarify, the invasives work at Minnewaska was done by NY State
> Parks, not the DEC. We have found mulching with leaves to be effective
> at smothering stiltgrass, but this must be repeated annually. Mulching
> with wood chips is also effective, and lasts a little longer, but will
> again succumb to stiltgrass after 2-3 years if not repeated.
>
> This year we also tried what we are calling the “Stiltgrass Shuffle,”
> where we preform heavy scuffing of the topsoil in order to remove the
> roots and plant. The better rooted natives can withstand this and
> remain. This was done in mid June and mid July here at Minnewaska in
> 10x10 plots, and those plots are still bare ground, despite being
> surrounded by stiltgrass on all sides.
>
> Several years ago my supervisor, Bob O’Brien, put some dry ice on the
> ground under a box and that killed off the stiltgrass for several
> years, meanwhile the asters also underneath the box recovered within a
> few weeks.
>
> Thanks everyone for fighting the good fight,
>
> Alyssa
>
> Alyssa Reid
>
> Invasive Species Project Coordinator
>
> NYS Office of Parks, Recreation and Historic Preservation
>
> PO Box 893
>
> New Paltz, NY 12561
>
> 845-256-0579
>
> Alyssa.Reid at parks.ny.gov <mailto:Alyssa.Reid at parks.ny.gov>
>
> Follow the Nature Times blog for news about wildlife, projects, and
> events in our Parks!
>
> http://nysparksnaturetimes.com/
>
> *From:*MAIPC [mailto:maipc-bounces at lists.maipc.org] *On Behalf Of *Dewey
> *Sent:* Monday, September 28, 2015 1:00 PM
> *To:* MarneyB
> *Cc:* INVASIVES at listserv.umd.edu; 'MA-IPC MA-IPC'
> *Subject:* Re: [MAIPC] FW: Stilt grass question
>
> 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
> <mailto: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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