Kikuyu problem

[bulldogs195461]

Kikuyu lawn in Toowoomba, this is driving us nuts,anyone got any ideas of what's causing this, plus a solution? Appreciate any help, cheers john

[Fred's mowing]

Google anco turf diseases.
They have substantial pics, some very similar to yours .......... You pick :i dunno:

Cheers Fred.

[NLALM]

its either a fairy ring , or kikuyu yellows
either way I would aerate it and hit it with a good fungicide like banner max or chipco gt ,
if you don't want to spend the dollars on the fungicide I would aerate it the give it a hit with a good quality wetting agent
water it in and give it a big feed to help it grow out, but let it dry out between waterings you don't want it to stay wet

a lot of time you will see puff balls or toad stools growing in the perimeter if its a fairy ring