I have developed a large brown patch (aprox 200 sq. ft.) in the middle of my
otherwise healthy and green lawn. I suspect grubs, but dug up a few places
and found none. (This might have been because the lawn is already dead, the
grubs have moved on.)
Before I blast the area with grubicide (or whatever it is) does anyone have
any advice on a) verifying the problem, and b) treating it, c) getting back
On Wed, 1 Sep 2004 15:18:25 -0400, "Ian Stock \(remove the
:) I have developed a large brown patch (aprox 200 sq. ft.) in the middle of my
:) otherwise healthy and green lawn. I suspect grubs, but dug up a few places
:) and found none. (This might have been because the lawn is already dead, the
:) grubs have moved on.)
grubs will eat the roots so the dead area will lift up like the
welcome mat on a fronch porch...if the roots seem to be in tact you
might dig up a sq foot section and take to a local nursery to identify
what sort of disease may efect what ever type of lawn you have.
Lar. (to e-mail, get rid of the BUGS!!
It is said that the early bird gets the worm,
but it is the second mouse that gets the cheese.
The dead turf is more like thatch than doormat. But it does come up easily.
Re: the brownpatch fungus note in earlier response, the area is quite dry
with lots of direct sunlight, which I would think precludes fungus.
Ian Stock (remove the "antispam")" <ianstock"antispam wrote:
Does not sound like grubs. Take a sample in and find out what it is.
Don't treat and kill off everything around, when you don't know if you have
anything that needs to be killed.
I have seen several cases of brown spots showing up after a dry spell.
The common problems are some buried object, like rock or wood; a natural gas
leak, or in a couple of cases, reflections off a window overheating the
grass. On occasion dogs can also cause problems.
Look at a extension service website for your area. The last advice I
read in looking for grubs was to lay back a square foot of sod and count
the grubs that you find. Can recall what number is acceptable per sq ft
Has this been a gradual or sudden problem? Warm climate? Mole crickets
here in Florida can scalp a lot of lawn. One method for finding them is
to saturate about a sq foot of sod with soapy water - tbsp of
dishwashing detergen per gallon - wait and see what comes up for air.
Interesting experiment, as it causes even earthworms to struggle for air.
I intended to say "I cannot recall.....". Also forgot what was most
important - take a soil sample and a section of sod from the border of
your problem area to have them determine what the problem is.
Also, have you applied any chemicals recently? Conditions wetter or
drier than normal? How long has the problem existed?
Our condo had large bare areas, but seemed to have no specific problem,
other than poor maintenance. A gopher cricket infestation, here,
could kill a lot of lawn and be long gone if one did not stay on top of
problems. It is also easy to cause damage through improper application
of fertilizer and/or herbicides.
It would help to know where you live Ian, but doesn't sound like grub
damage. To check for grubs or any other insect check at the border where
the lawn is still green. It sounds like a surface feeding insect to me.
In our area of Canada I would suspect Chinch Bug.
I stand by my original guess if you are in the Toront area. When you
walk on the dead area does it feel different? If so chances are the root
structure is gone and there is little home for the patch.
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