I cut the grass for the last time last Friday on a 3 acre home. I cut it just a bit lower at 2 3/4", and I did not mow it the week before, mainly last week to mulch leaves. Not even a week later all the grass is yellow/brown. There was no frost on the ground as it was about noon and the temps were in the mid 50's. No other property's have done this and I've never seen this before. The week before the property owner had a friend spraying herbicides. I haven't talked to him yet to see exactly what was sprayed as he probably wont know anyway. Could it have been an over application of the herbicide?