we ned to put prosecutor in with our pre emergent in our 100 gallon spray rig. we have 38 ounces of barricade 4fl per label instructions the instructions for the prosecutor are very confusing. i am coming up with a rate of 17 ounces of chemical for 100 gallons of water does that seam right?? we spray 2 galloons per 1000 square feet that seems low compared to what what I am reading on the forums but label says not to go over 16 ounces per acre on dormant bermuda am I missing something??????