Random question that I thought about while working alone many days. I was spraying my 3-way the other day and the label has the rates as follows "warm season" grasses 2-4 pints/acre "cool season" grasses 4-6 pints/acre My question is why wouldn't you just spray at the lower rate say 2 or 3 pints/acre. Why would you have to spray a lower rate on bermuda, centipede, etc and a higer rate on fescue to kill the same weeds? would 2 pints/acre kill clover in bermuda, but not in fescue? Just curious.