Archived posting to the Leica Users Group, 2009/08/17

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Subject: [Leica] IMG: Information Needed on Cause of Lawn Circle
From: douglas.sharp at gmx.de (Douglas Sharp)
Date: Mon, 17 Aug 2009 18:28:36 +0200
References: <978FB258646E44CAA3F682B552AF1BCE@jimnichols> <4A886765.9060101@gmx.de> <CB7F8BE8480548F485A19CAF801CA829@jimnichols> <3e7573d40908161508k144f2b77s8c6d2633b310ce30@mail.gmail.com> <6.2.5.6.2.20090817091917.02932418@med.cornell.edu>

Looks like very sandy soil - not really a place for fungi.

Maybe a Native American burial ground - is it spooky at night?

Cheers
Douglas

Chris Saganich wrote:
> Mushrooms
>
>
> At 06:08 PM 8/16/2009, you wrote:
>> Septic tank?
>>
>> Leo Wesson
>> Photographer/Videographer
>> 817.733.9157
>> www.leowesson.com
>>
>>
>> On Sun, Aug 16, 2009 at 4:01 PM, Jim Nichols 
>> <jhnichols at lighttube.net>wrote:
>>
>> > Hi Douglas,
>> >
>> > The only structure that ever adorned these lots before our houses 
>> was an
>> > American Civil War earthwork on the opposite end of my lot, 
>> overlooking the
>> > roadside at that time.  That disappeared forty years ago.
>> >
>> > Thanks for the feedback.
>> >
>> > Jim Nichols
>> > Tullahoma, TN USA
>> > ----- Original Message ----- From: "Douglas Sharp" 
>> <douglas.sharp at gmx.de>
>> > To: "Leica Users Group" <lug at leica-users.org>
>> > Sent: Sunday, August 16, 2009 3:09 PM
>> > Subject: Re: [Leica] IMG: Information Needed on Cause of Lawn Circle
>> >
>> >
>> >  Hi Jim,
>> >>
>> >> have you had very little rain recently?
>> >>
>> >> This looks like what happens when some kind of structure is at 
>> shallow
>> >> depth below the surface. Both sides stiil get enough water from 
>> deeper
>> >> in the ground, but above the structure everything dies off. Very 
>> useful
>> >> for archaeologists but not so good for a nice green lawn.
>> >>
>> >> Could be an old wall or foundations, the rim of an old pond (hard 
>> packed
>> >> clay), an old farm building or similar.
>> >>
>> >> If there's been a lot of construction work with pretty deep 
>> foundations
>> >> being dug or pipelaying in the neighbourhood, it could mean that the
>> >> groundwater table has fallen.
>> >>
>> >> We had a similar effect in our garden caused by "lenses" of clay and
>> >> sand. These filled with rainwater and made circular areas that 
>> wobbled
>> >> like quicksand. I had to dig a criss-cross of trenches almost 3-feet
>> >> deep through the garden to get it draining properly.
>> >>
>> >> Cheers
>> >> Douglas
>> >>
>> >>
>> >>
>> >> Jim Nichols wrote:
>> >>
>> >>> I know there are many knowledgable people on these two lists. I am
>> >>> looking for a hint on the cause of a circle of dead grass that is 
>> very well
>> >>> defined on my lawn and extends, faintly, into the adjoining lawn.
>> >>>
>> >>> I recall that a cherry tree once existed in this general area in the
>> >>> neighboring lawn. I had a maple in my yard that was damaged by a 
>> wind storm
>> >>> and removed.  However, neither of these was near the center of 
>> the circle.
>> >>>  I have heard that maple roots can cause problems in grass, but no
>> >>> previously-existing root circle matches what I now observe.
>> >>>
>> >>> Anyone got a suggestion?
>> >>>
>> >>> http://gallery.leica-users.org/v/OldNick/Lawn+Circle.jpg.html
>> >>>
>> >>> Jim Nichols
>> >>> Tullahoma, TN USA
>> >>>
>> >>> _______________________________________________
>> >>> Leica Users Group.
>> >>> See http://leica-users.org/mailman/listinfo/lug for more information
>> >>>
>> >>>
>> >>>
>> >>
>> >
>> >
>> > 
>> --------------------------------------------------------------------------------
>>  
>>
>> >
>> >
>> >
>> >
>> >> _______________________________________________
>> >> Leica Users Group.
>> >> See http://leica-users.org/mailman/listinfo/lug for more information
>> >>
>> >
>> >
>> >
>> > _______________________________________________
>> > Leica Users Group.
>> > See http://leica-users.org/mailman/listinfo/lug for more information
>> >
>>
>> _______________________________________________
>> Leica Users Group.
>> See http://leica-users.org/mailman/listinfo/lug for more information
>
>
> _______________________________________________
> Leica Users Group.
> See http://leica-users.org/mailman/listinfo/lug for more information
>


In reply to: Message from jhnichols at lighttube.net (Jim Nichols) ([Leica] IMG: Information Needed on Cause of Lawn Circle)
Message from douglas.sharp at gmx.de (Douglas Sharp) ([Leica] IMG: Information Needed on Cause of Lawn Circle)
Message from jhnichols at lighttube.net (Jim Nichols) ([Leica] IMG: Information Needed on Cause of Lawn Circle)
Message from leowesson at gmail.com (leo wesson) ([Leica] IMG: Information Needed on Cause of Lawn Circle)
Message from chs2018 at med.cornell.edu (Chris Saganich) ([Leica] IMG: Information Needed on Cause of Lawn Circle)