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  #11  
Old 09-07-2012, 11:54 AM
44DCNF 44DCNF is offline
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Shallow roots from frequent but shallow watering. Stress and dormancy from the drought. It's slowly snapping back in other areas as well. Be vigilant with fall weeds taking over in the thin spots, but wait untill the grass has recovered for a while to spot spray if needed.

Was the area recently more shaded, before a tree fell or was removed? This can also happen when there's a sudden sun exposure/microclimate change like that, to where it can take a couple seasons to fully rebound.
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  #12  
Old 09-07-2012, 08:02 PM
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TScapes TScapes is offline
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I'd pull back some of the dead turf with a shovel and inspect for grubs. As for disease, if you look at the leaf blade of the dead and the edge of where it is green... look for any lesions with dark brown borders that have turned brown or even gray. That is probably brown patch or could be another disease like dollar spot. If you see the lesions, just get a fungicide and go ahead and treat the areas. Either way, you will HAVE to overseed. If it is a fungus, plan on pre-treating the area next season to prevent it.
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  #13  
Old 09-07-2012, 11:02 PM
maynardGkeynes maynardGkeynes is offline
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Quote:
Originally Posted by 44DCNF View Post
Shallow roots from frequent but shallow watering. Stress and dormancy from the drought. ...
Agree. Look at the neighbor's lawn. If fungus, neighbor would show some signs of brown patch etc., but theirs looks real good.
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  #14  
Old 09-07-2012, 11:15 PM
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TScapes TScapes is offline
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Quote:
Originally Posted by maynardGkeynes View Post
Agree. Look at the neighbor's lawn. If fungus, neighbor would show some signs of brown patch etc., but theirs looks real good.
Umm... Yes a fungus spreads, but just because a neighbor has it doesn't mean it's gonna spread to yours and vise versa.
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  #15  
Old 09-07-2012, 11:20 PM
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TScapes TScapes is offline
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Also, upon further review of your pics... you have some serious separation from the soil and the sidewalk. That is a classic sign of drought or extreme heat stress. It also appears that there is some dead or "Burn" on the alberta. Without actually seeing the location in person, these are only assumptions based on your photos.
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  #16  
Old 09-08-2012, 12:02 AM
maynardGkeynes maynardGkeynes is offline
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Originally Posted by TScapes View Post
Umm... Yes a fungus spreads, but just because a neighbor has it doesn't mean it's gonna spread to yours and vise versa.
Fungus damage is a lot less frequent than drought damage. If you have to guess what is causing a bunch of large, dry looking areas with virtually no information other than a couple of pictures, your first guess should be the one that is the most common cause, which is drought damage. But it is a guess -- it could be many other things. Also, a lot of these fungi are ubiquitous, so you don't need spreading from lawn to lawn. It's the heat and humidity that brings it out. I assume that is the same at both yards.

Last edited by maynardGkeynes; 09-08-2012 at 12:12 AM.
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  #17  
Old 09-08-2012, 08:19 AM
Smallaxe Smallaxe is offline
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Quote:
Originally Posted by TScapes View Post
Also, upon further review of your pics... you have some serious separation from the soil and the sidewalk. That is a classic sign of drought or extreme heat stress. It also appears that there is some dead or "Burn" on the alberta. Without actually seeing the location in person, these are only assumptions based on your photos.
The O.P. says he has enough water,,, so that can't be the problem... he doesn't have to check the root zone because he already knows that the turf is getting irrigated...

Every season we get 100 cases of fungus for every 3 cases of Summer Burnout...
__________________
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Now that I know that clay's texture(platelets) has nothing to do with water infiltration, percolation, or drainage
,,, I wonder what does...
*
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  #18  
Old 09-08-2012, 08:26 AM
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sea ox sea ox is offline
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Thanks for everyones input. The alberta is brown from red spiders. The neighbors lawn looks nice because that house was just built and the sod laid about a month ago. I will definitely inspect the root zone the next time im out that way and collect some more pictures!! I over seeded with a mix of perrienal rye, fescue, and bluegrass last fall.
It is definitely not heat damage because the lawn was nice and green all summer. This only developed about 3 weeks ago and it has been cool and rainy here for the most part
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  #19  
Old 09-08-2012, 08:29 AM
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sea ox sea ox is offline
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Across the street is a city maintained island with no irrigation and it is lush and green. Of course its all weeds
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  #20  
Old 09-08-2012, 10:36 AM
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RigglePLC RigglePLC is online now
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Could be gray leaf spot.
as here.
http://www.google.com/url?sa=t&rct=j...uGKu7QX20A5mHA

Be sure you can identify it, and that you are also familiar with red thread disease.
Whenever a turf is renovated and reseeded like you did last year. If you plant a mixture containing perennial ryegrass...the quick germination can result in a predominately ryegrass lawn...you may have near zero bluegrass. Worse yet, if you planted a mix that contained an inexpensive perennial ryegrass variety...that turf may not have much disease resistance.
Blazer 4 has good resistance to gray leaf spot.
http://pickseed.com/usa/proTurf/turf/index.html

Last edited by RigglePLC; 09-08-2012 at 10:38 AM. Reason: link
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