I had a similar problem in my yard. Yes, it is a fungus I used propiconazole 14.3 and I hope like hell it works.
St Augustine Grey Spot Recovery
2
I purchased a house from a single lady who did not like to go outside. As a result the yard was neglected for over 20yrs. I inherited this yard with all 4 of the 4 season grasses. I have what I believe to be both Emerald and Z-52 Zoysia, St Augustine, Common Bermuda, and Centipede. I also had several trees removed and there are lots of bare ground. The predominant grass type is St Augustine. I joined the forum looking for help because earlier this year all I had was clover and weeds. I have been trying to push the grass hoping to get it to fill in the bare spots with whatever grass type is adjacent to. I received my soil sample back early in the year and my soil was very acidic.
I am using this yard to learn and hope to do a full sod renovation in the next 1 -2 years. In the meantime it is my goal to just push growth make mistakes and learn everything I can before that time. This forum has been a tremendous resource and my yard is almost entirely weed free after just one full rate application of Celcius. It is amazing.
Here is what I have done so far which is probably why I have such bad Grey Spot.
4/6/2018
4lbs/1000 of 24-2-11 (1lb/1000 N)
4lbs/1000 of Pelletized Lime
4/30/2018
Core Aerate
5/03/2018
12lb/1000 of Pelletized Lime
High rate broadcast Celcius application for broadleaf weeds high rate stunted the growth of the St Augustine for almost 2 weeks.
5/16/2018
4lbs/1000 of 24-2-11 (1lb/1000 N)
6/4/18
Significant rain event from tropical storm. I noticed the fungus starting right before I left for a work trip. Returned 3 days later and all of the St Augusine was covered in Grey Leaf Spot.
What did I do wrong and what can I do about it now? Should I treat with a preventative fungicide or can I treat it now? Would an Iron application help? Should I stop with nitrogen applications? Would love any advice.
I am using this yard to learn and hope to do a full sod renovation in the next 1 -2 years. In the meantime it is my goal to just push growth make mistakes and learn everything I can before that time. This forum has been a tremendous resource and my yard is almost entirely weed free after just one full rate application of Celcius. It is amazing.
Here is what I have done so far which is probably why I have such bad Grey Spot.
4/6/2018
4lbs/1000 of 24-2-11 (1lb/1000 N)
4lbs/1000 of Pelletized Lime
4/30/2018
Core Aerate
5/03/2018
12lb/1000 of Pelletized Lime
High rate broadcast Celcius application for broadleaf weeds high rate stunted the growth of the St Augustine for almost 2 weeks.
5/16/2018
4lbs/1000 of 24-2-11 (1lb/1000 N)
6/4/18
Significant rain event from tropical storm. I noticed the fungus starting right before I left for a work trip. Returned 3 days later and all of the St Augusine was covered in Grey Leaf Spot.
What did I do wrong and what can I do about it now? Should I treat with a preventative fungicide or can I treat it now? Would an Iron application help? Should I stop with nitrogen applications? Would love any advice.
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I'm also thinking about buying a class 11 fungicide also, putting it down in 30 days. I'll keep in touch letting you know how the first one works out.Cman said:Thanks for the response @Ecks from Tex . I will get back on the fertilizer just wanted to hold off until I knew what to do about the fungus. I will try eagle 20. I have a site one nearby that I think I can get it.
@CenlaLowell Let me know how yours works out. I really should gotten on this earlier but analysis paralysis kicked in and I was not certain what to do. Unfortunately I will be out of town for the next 6 days but this will be my first chore when I get back. Hope it isn't to late by then.
Make sure to water you lawn consistency, but only in the morning it will come back. I'm still working on a small part of my lawn, the rest has already came back.HewKnowHew said:What's up yall?! I am facing the same issues my lawn. I have put down a bag or headway G (has worked the best for me), I have put an application of Propiconazole 14.3 and Eagle 20 and I just can't shake this fungus. I have also been using Milorganite(I am now off that ban wagon), N-ext products (RGS, Microgreem, Air8)...and I think that's it. I took a soil sample and know I need some potassium in my soil...so from this information and from you guys that have dealt with or are curently dealing with this offer me any advice? I put that Eagle down yesterday and I just put down down some Microgreen (0-0-2) and Air8 from GCF. I am pretty nervous about losing my lawn! It looks worse now than in the picture. Thanks!
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