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Old 08-18-2016, 11:04 PM
 
111 posts, read 128,530 times
Reputation: 38

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Pic included. Thought i had grubworms and purchased and applied bayer advanced grub killer (off memory) used my dlx scotts spreader and spread evenly throughout the yard at the directed settings...

In texas we have gotten a fair share of rain and i rub my sprinklers for 20min mon/wed/fri at 4am- heard thats best and thats when the golf course does it.

What do i have? Should i dig a spot up to check for grubs or is it a fungus? Sprinklers obviously are not running when rain falls - i turned off.

Ideally i would like to fix this for cheap as possible. Will it repair itself after sunmer?

We bought the house in february and taken great care of it. It used to he immaculate.


[pic](https://imgur.com/a/BLXGp)
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Old 08-19-2016, 05:02 AM
 
Location: Houston Metro
1,133 posts, read 2,000,318 times
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If you are sure it's not grubs there's a good chance you have soil compaction going on. When the soil dries out it gets extremely hard and any water can run right off the top without penetrating the roots. To fix it you'll need to aerate your lawn, which is a good idea to do anyway. Aeration is inexpensive and will allow water to get to the roots and prevent those dry spots.

That being said, based on the pictures, that looks more like a fungus or grubs than St Augustine drying out.
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Old 08-19-2016, 08:01 AM
 
670 posts, read 1,432,027 times
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Does the grass pull up easily, as in, the roots are gone? If so it's probably grubs. You can also dig up some 1ft x 1ft sections and see how many grubs are in it.
https://www.bayeradvanced.com/articl...ith-lawn-grubs

Could be fungal too as mentioned. There is plenty of St A fungal information out there.
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Old 08-19-2016, 08:09 AM
 
Location: Clear Lake, Houston TX
8,376 posts, read 30,582,212 times
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In my experience, August/September is usually fungus.
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Old 08-19-2016, 08:34 AM
 
Location: League City
3,842 posts, read 8,222,154 times
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Typically it will repair itself next year. I don't remember the exact search terms I used, but I once found a Texas A&M site with the agricultural department that accepted soil samples for testing. It wasn't expensive either. They could definitively tell you if it is a fungus or nutrient deficiency or a virus or whatever.

Update: this may be it
http://plantclinic.tamu.edu/
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Old 08-19-2016, 11:36 AM
 
277 posts, read 301,994 times
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It's brown rot, Brown Patch Disease of Lawns – Introduction | Urban Program Bexar County
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Old 08-19-2016, 09:04 PM
 
66 posts, read 98,252 times
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I agree - that looks like brown patch - there are fungicides that can correct it.

Unless you want to do it yourself, it may be best to call in a lawn specialist to apply/spray the fungicide.

If you want to be sure - take a square blade shovel and dig up a 24" x 24" patch of turf up and look for grubs.

If you don't see any, it is fungus. Only fungicide will solve that.
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Old 08-21-2016, 11:47 AM
 
1,232 posts, read 1,887,239 times
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That looks like chinch to me. It is the STD of lawn diseases. If one neighbor gets it, it can quickly spread to others. If your lawn service mows a lawn with it, they can be transferred to you. Treat it now, and again, and again. It is very difficult to get rid of and it comes back - just not as bad. Before we knew what it was, we kept thinking our sprinkler wasn't reaching areas of the lawn. By the time we figured it out, some of our grass had already died. Treat it now and next year, treat it as a preventive before you see damage.
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