I bought a 200 gallon sprayer last week. I have never sprayed before only put out granular fungicide. I am getting a 16 oz bottle of disarm. I have heard that 1 bottle (16oz) will do the whole 200 gallon sprayer at 2 acres? Does anyone know if its true, or what rate I should look at instead? I am trying to figure what to charge and how much product 200 gallons needs and coverage.