For spot treatments, you will mix Celero Herbicide at 0.25 oz (1.5 tsp) to 0.33 oz (1.98 tsp) in one to two gallons of water to treat 1,000 square feet.
Add 2 teaspoons (1/3 fl oz) of non-ionic surfactant per gallon of water.
Yes, you can potentially mix those products together. The product label for Propiconazole 14.3 states "If Quali-Pro Propiconazole 14.3 is tank mixed with other products, use the following sequence: Always check the compatibility of the tank mix using a jar test with proportionate amounts of Quali-Pro Propiconazole 14.3, other chemicals to be used, and the water before mixing in the spray tank."
Celero Herbicide cannot be applied over-the-top, around or within root zones to desirable flowers, ornamentals, vegetables, shrubs or trees per the product label.
We would recommend contacting a local Arborist or the Master Gardner Division with your County Extension Office for their recommendations on active ingredients/products specific to the weeds you are treating and varieties of trees on the tree farm.
Celero Herbicide does not list buffalograss as tolerable to applications on the product label, it would not be recommended to use.