Roundup Powermax Mix Ratio Per Gallon. My account | checkout | cart (0) 880 central ave. When using roundup powermax ii herbicide in 25 gallons of water you can use anywhere from 13 fl oz to 7 quarts.

Apply this product at the appropriate rate as specified on this label in 3 to 40 gallons of water per acre when making a broadcast application using ground application equipment, unless otherwise directed on the label. Acid equivalent (ae) or 5.88 lbs. Then, how do you mix roundup herbicide?