Originally Posted by RigglePLC
This is like a long-distance lawn autopsy. Lots of people think their neighbors do nothing--underground nighttime irrigation is sometimes the difference. Dry spells have been a problem in your area.
Possibly the pool was filled in with a sandy soil that dries out too quickly. Is the grass most dead in the sunniest area? Near the house, you probably get a half day of shade. Near the neighbor's trees you probably get a bit of shade--although--there is a band of brown grass along the back left, for some reason. Grass looks a bit clumpy.
There is a chance this is not Kentucky bluegrass. Kentucky bluegrass spreads by underground stems called rhizomes. Perennial rye grass is a bunch grass and does not spread except by growing bigger clumps. If your Kentucky bluegrass was supplied by a seed company that mixed Kentucky bluegrass with perennial rye and/or red fescue...the Kentucky bluegrass (which is very slow to germinate) may have failed--leaving you with mostly perennial rye and red fescue. Neither do well above 90 degrees. Perennial rye is sensitive to grey leaf spot.
This is a good week to reseed. Get it professionally slit-seeded. Seed germinates quick when the soil temperature is high. And fall rains should be a help. Nothing wrong with sod either--looks great in a front yard. Install irrigation for best results. Use the Milorganite as starter fertilizer. Fertilize at 30 and 60 days after your new grass is installed to stimulate thickening before winter. It is best to use a turf fertilizer as it would contain potassium, and Milorganite contains no potassium. (6-2-0).
Thanks, I personally filled in the pool years ago and had new screened soil brought in and I used Pennington seed which did have rye in it. I have a large yard and all areas my friend (the landscaper) has re-done with seed from his supplier is doing great and is green (the areas where I had trees taken out). He sprayed to kill off front lawn yesterday and said he'd be back in 2 weeks with a few loads of new soil and hydroseed. I hope that works. I live in an older neighborhood (1950's) and am pretty much the only one with this problem, front and back, and back is only 5yrs old. problems stop exactly at property lines as does the house down the street.