St. Augustine grass problem

[Roy Machin]

Hello all,

Not sure what is up with my grass, look at the pics.

I mow every 3-4 days at 3.5 inches. I’ve fertilized and put down fungicide and insecticides quarterly. These spots are showing up and not sure what to do... it has been raining a lot here in south Florida, every day for almost 2 weeks now. The lawn appears to be in overall good shape and would like to keep it that way... all input is appreciated!

 

[Chuck]

Any dogs around?

 

[Roy Machin]

Nope

 

[Silentrunning]

How long has it been since you thatched the lawn? You have to either thatch or “bury” it every few years to keep it at its best.

 

[Roy Machin]

Once to twice a year I’d say

 

[Chuck]

do the spots get larger or stay the same

 

[Silentrunning]

Good work! Do you have it sprayed for grubs and sod web worms?

 

[Roy Machin]

do the spots get larger or stay the same

Different sizes, some are spots and some are the runners are yellow.

 

[Roy Machin]

Good work! Do you have it sprayed for grubs and sod web worms?

Yes sir.... anyone think root rot?

 

[Chuck]

Different sizes, some are spots and some are the runners are yellow.

Without being there its very hard to diagnose. If the runners are easy to pull up in the affected areas it's possible it's root rot but I don't think so. The following link may be of help. Are you sure one of your neighbors doesn't let his dog out at night? It really looks like a dog urine problem.
http://ufdcimages.uflib.ufl.edu/IR/00/00/28/48/00001/LH03400.pdf

 

[DirtMechanic]

Yes sir.... anyone think root rot?

Root rot like take all is easy to diagnose because the grass comes right up because dead and dissolved roots. Plus you sprayed fungicides which should help. Have you considered bacterial? @Chuck would you think actinovate might help?

 

[Chuck]

Root rot like take all is easy to diagnose because the grass comes right up because dead and dissolved roots. Plus you sprayed fungicides which should help. Have you considered bacterial? @Chuck would you think actinovate might help?

Yes, I do. I think it would be a lot better than all of the synthetic fungicides. I really think it is the neighbors dogs or stray dogs that are causing the problem though. I've seen it many times, a spot here a spot there..............