I have ran into several occasions where sod is put down and looks good for the first year, but then starts getting nailed with diseases. Is this a rare occurence or do others see this a lot. Do you think it has anything to do with sod farms applying preventative fungicides for so long that when it doesn't receive fungicides it is more prone to disease? I have had it happen on good soil and poor soil, so I don't believe this is the problem. The cultural practices from what I know are good too. Anyone read or experience anything like this?