What causes a circle of dead lawn grass?

[grsthegreat]

All you guys are UFO deniers

 

[OzarkChris]

I our front yard is a 20 foot diameter circle of dead grass, about 6" across. It may be hard to see in picture but you clearly see in foreground dead lawn and it's really almost a perfect circle.
I've had my soil tested by agricultural laboratory and it came back excellent except a little high in nitrogen. Rest of lawn (over an acre) is fine. Septic lines and tank is way away in back yard. No underground wires, phone, AC, pipes, etc.
Over the years any bare spot I lightly raked, seeded, then thin layer of potting soil, straw on top & it does great.
I've seeded this, doesn't help. Any idea what causes this? It's weird. (Aliens? ).View attachment 758212

Looks like crop circles to me! If you look real hard I'm sure you can see the alien text running through the yard, or is that a self portrait from them??

 

[Surshot]

Around here it is mole crickets, the wild turkeys and ducks love it when it rains, causes them to surface.

 

[Fuddyduddy1952]

I got this at Ace Hardware yesterday. Bag says best to put down an hour before it rains, otherwise water.
An hour later it rained!

 

[Shenandoah MF1760]

I think I found what it is by internet research.
This picture is not my lawn but found on the web.
We've had lots of hot days (90°F+), lots of rain and my soil a little high in nitrogen, all elements for Rhizoctonia solani to thrive.
There is a treatment and Ace Hardware is close by...hope they have it. Scott's lawn disease treatment.
Think that's it? ...thanks for opinions...View attachment 758231

Dead Rings In Your Grass? - Dealing With Brown Circles In Your Lawn? - LawnSavers Toronto

Dead circles or brown rings in your lawn are called necrotic ring spot. These patchy brown areas of dead grass are brought on by the presence of fungus in your yard. What can you do?

lawnsavers.com

Check this site out. That looks like it's caused by a fungus.

 

[Tony H]

Gub

I our front yard is a 20 foot diameter circle of dead grass, about 6" across. It may be hard to see in picture but you clearly see in foreground dead lawn and it's really almost a perfect circle.
I've had my soil tested by agricultural laboratory and it came back excellent except a little high in nitrogen. Rest of lawn (over an acre) is fine. Septic lines and tank is way away in back yard. No underground wires, phone, AC, pipes, etc.
Over the years any bare spot I lightly raked, seeded, then thin layer of potting soil, straw on top & it does great.
I've seeded this, doesn't help. Any idea what causes this? It's weird. (Aliens? ).View attachment 758212grubs? Moles, voles

Animal urine

 

[gckshea]

I our front yard is a 20 foot diameter circle of dead grass, about 6" across. It may be hard to see in picture but you clearly see in foreground dead lawn and it's really almost a perfect circle.
I've had my soil tested by agricultural laboratory and it came back excellent except a little high in nitrogen. Rest of lawn (over an acre) is fine. Septic lines and tank is way away in back yard. No underground wires, phone, AC, pipes, etc.
Over the years any bare spot I lightly raked, seeded, then thin layer of potting soil, straw on top & it does great.
I've seeded this, doesn't help. Any idea what causes this? It's weird. (Aliens? ).View attachment 758212

Fairy Ring. It's a grass fungus.

 

[MossRoad]

Looks like crop circles to me! If you look real hard I'm sure you can see the alien text running through the yard, or is that a self portrait from them??

Try to decode it…

 

[Shorteraaron]

Old pool, previous tree, excess fertilizer leak, weed and feed leaking (father-in-law did this with an old sprayer and it dripped even when off), mower footprint.

 

[Fuddyduddy1952]

Old pool, previous tree, excess fertilizer leak, weed and feed leaking (father-in-law did this with an old sprayer and it dripped even when off), mower footprint.

No....not I'm sure...