i've got this little 18 x 18 patch of lawn that has had all kinds of problems. it started off this season with a bunch of different weeds and generally looking like garbage, so i killed it off, tilled it and reseeded. that was probably in march. it didn't grow fast enough and the homeowner decided after reseeding 3 times that she wanted to just put in sod instead. so this time she tilled it herself, and i put in the sod. it was being watered about 10 min a day, every day. up until this point i was the only person giving advice on what needed to be done with the lawn but then she started getting advice from 3 additional sources and things have escalated to the point where the lawn looks worse then it did before we started this project. the "helpers" here are the sod company, her neighbor who is an lco and has been for 30 years, and whoever works at home depot in the garden section. well the sod starts drying out at the corners, so she calls the sod company and complains, they tell her it's most likely a fungus, so she goes to home depot and loads up on fungicide, and then sprays the lawn. that doesn't work, so she calls the sod company again. this time they send someone out, and determine the sprinklers are not covering these spots. they make some adjustments and resod the corners. things start looking better but mushrooms take over. next random places die off. looked like an insect problem to me, but i was not totally sure. at the base of the blades in the affected are things that look like white spider webs, only they are bunched together in tight balls of webs. (thats the best i can explain it.) anyhow, that was last weekend. she starts getting depressed and calls the sod company again, they tell her to cut back on her water to 4 min in the morning and 4 min at night. today i get there and now half of the lawn is yellow. best way i can describe what it looks like is if someone were to either urinate all over it. i'm completely baffled by this. this sod has only been in the ground about 2 - 3 months, and has already had 20-27-5 applied, a homedepot brand fungicide applied two or three times, ironite, and now more nitrogen applied this morning before i got there.