Archived posting to the Leica Users Group, 2009/08/16
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]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