Prodiamine 65 WDG's application rates are between 0.185 - 0.83 ounces per 1,000 sq. ft. per application. The rates for larger mixes and applications are 0.5 - 2.3 lbs. per acre. Note that the mix ratio for Prodiamine 65 WDG is dependent on grass type and length of efficacy desired. Refer to the Prodiamine 65WDG label for the exact amounts for your grass type.