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Old 07-09-2013, 07:43 AM
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ron mexico75 ron mexico75 is offline
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What does this look like

Had person send me these pictures. I did not take them so I don't have any close up of the blades themselves. I would imagine when I go out there that if the blades have lesions of some sort than it's an infection. If not, than its damage/burn.

If it was chemical damage/burn, would there still be green grass in the middle of these spots?
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Old 07-09-2013, 09:04 AM
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RigglePLC RigglePLC is online now
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Is this St Augustine? Has it been hot and humid? Looks a little dry in spots--what is the irrigation plan?

Blades sharp? In that first pic...the mower seems to be a bit under powered for the job.
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Old 07-09-2013, 09:10 AM
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Quote:
Originally Posted by RigglePLC View Post
In that first pic...the mower seems to be a bit under powered for the job.
Made me look.
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Old 07-09-2013, 09:54 AM
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Quote:
Originally Posted by RigglePLC View Post
Is this St Augustine? Has it been hot and humid? Looks a little dry in spots--what is the irrigation plan?

Blades sharp? In that first pic...the mower seems to be a bit under powered for the job.
Hot and humis, zone 7. Homeownwer cuts so I highly doubt blades are sharp. They have irrigation and lawn had looked a little dry in areas that are in full sun.

I'm just not sure about those circular spots. I did spray Q4 early in the day 10 days ago.
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Old 07-09-2013, 05:21 PM
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First pic looks like some drought stress/hot spots. If the other 2 spots were in my area/turf, I would say they had a "flare up" of patch disease(large patch/brown patch) that has now gone "inactive".

But, since I don't know your location or the turf type, I can't tell you for sure, but the last 2 pics are of disease. That I do know.
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Old 07-09-2013, 05:28 PM
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Quote:
Originally Posted by monoshock View Post
Made me look.
Me 2, had to look, can't imagine how long it would take.
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Old 07-09-2013, 09:35 PM
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If its a chemical burn--you should find a dead weed in the center of each spot. Do not overdose with Q4.
I suspect fungus.
But also, it is typical of dry spots when the grass dies in a slightly irregular pattern. If a mixture was sown--the deeper-rooted grass survives and the newer or shallow-rooted grass fades out to brown (or maybe it is rye).
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Old 07-10-2013, 11:01 AM
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well, thanks everyone for posting. Again, this is zone 7 TTTF. I went out to inspect in person. Here are some close up pics of grass blades from the green center of those brown spots. Pics of the spot and then closeups of the blades.

I think this supports my claim that it is a fungus and not damage from the Q4 don't you think? MAYBE a slight discoloration from the Q4 but not those huge spots. I say this because any of the grass blades I looked at that were not totally brown were green with lesions on them.
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Old 07-10-2013, 08:13 PM
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Anyone have opinions?
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Old 07-11-2013, 02:52 PM
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Being TTTF I would say Brown Patch with the heat and humidity you have experienced. Not chemical burn.
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