I have a property that is about 20000 sq ft of turf. It was hydroseeded last year with minimal soil prep (red clay) and part of the area was already installed prior to last year. I didn't do the install, just started maintenance last year when it was complete. Last year there were "dry spots". There are some areas of mild thatch in the area that was already installed prior to hydroseeding. A few months ago, there where areas of brown, so I pumped up the water. it was getting warmer and it made sense at the time, I realize i probably made whatever fungus worse. Last fert was 2 months ago. I delayed fert once we figured out it may be a fungus. The owner called a licened pest op, and they came out and spread 3336g, i believe. She saw what it was and went and bought more and applied three weeks later. It made no difference. She is ready for me to rip up everything and start over. Sounds nice, but i don't want to do that until we can identify the fungus and identify the source. If there is another product that should have been used, that would even be better. Northern grass mix, blugrass20% and fesuces 80%. There is probably 10% of rye in the mix i would bet. The grass starts to turn brown in a 2-3 foot section, then rapidly accelerates its growth. The tops of the grass look dead and matted. There seems to be new growth, but if you pull back the top dead areas, the soil and into the base of the grass looks black. Tips of the grass are brown, while the middle of each blade is green. The soil is completely dry where this occurs and if I go to a shady area (worse in sun areas) the soil is moist and looks healthy. I have another property that has a 20ft section of thatch that every year the owner tells me to plow it and re-seed, but she always gets busy and I have never addressed the thatch. She has the exact same issue this year as described above..... thoughts?