[Movingshrub]

Edit - The photos were out of order, which has now been corrected.

The first photo is October 2017, pre-frost.


This photo is June 17th 2018.


Nematodes? Grub damage? That area was sprigged in June 2017, and was receiving 4lb of N a month and regular irrigation. Considering the circles were developing prior to winter, I assume cold weather would've just made an existing problem worse rather than causing the problem.

Any suggestions for recovery?

 

[daganh62]

I'm no expert but it could just be winter kill. First year lawns are very susceptible to winter kill. I would keep it watered and fertilized. The bermuda will do the rest. July is coming so it will fill in.

 

[Greendoc]

See any mushrooms growing out of those rings? In the picture, I see a distinct ring pattern that is associated with Fairy Ring disease.

 

[Movingshrub]

I'm no expert but it could just be winter kill. First year lawns are very susceptible to winter kill. I would keep it watered and fertilized. The bermuda will do the rest. July is coming so it will fill in.

Entirely possible. I'm hesitant to assume all of the damage due to winter kill considering it was looking weird last October before we had anything near cold temperatures.

 

[Movingshrub]

See any mushrooms growing out of those rings? In the picture, I see a distinct ring pattern that is associated with Fairy Ring disease.

Nope.

The photos above are from my front yard which is Bermuda and zoysia. The disclorored section is only in the Bermuda.

This photo is of my backyard from May 20th 2018 and I feel like it has a similar look. The backyard had been blanked sprayed with Celsius and PGR (at separate times). For the back, I upped my fast release N to 0.5lb per week and will try to take an elevated photo again to compare the difference.

 

[Greendoc]

Hard to say. Didn't you get a soil test done recently showing a need for lime? Bermuda suffers when the soil pH is below 6. It also has a need for Calcium and Magnesium which is normally low when pH is too low. Nematodes are something I consider when I have nutrients and soil pH at optimal not minimal for survival levels. The MSLN stuff is for people with the time and budget to deal with the consequences of starving turf. As a professional called in to maintain high quality turf, I put grass on the optimal not minimal nutritional program. When that is in place and I can rule out issues with irrigation, shading and soil, then Nematodes are considered. Testing for Nematodes can be misleading if done wrong. The test samples need to be pulled from the areas near but not directly from the parts that look bad. The parts that look bad do not have a lot of Nematodes present because they need a live and healthy host to live. If they killed the grass, they have to move on.

 

[Guest]

No advice on the patch stuff but how is the tiftuf doing with what looks like quite a bit of shade in the back? Those are some big trees.

 

[Movingshrub]

No advice on the patch stuff but how is the tiftuf doing with what looks like quite a bit of shade in the back? Those are some big trees.

Overall, I think it's doing. There is one area where it's stuggling and that's right up against a fence line that's pretty low on light all day.

I changed the exposure of the photo so the area would be visible but otherwise it's significantly shaded. With that being said, there are stolons running towards the fence.
I may put my light meter along the fence edge and see how it measures.