Quinclorac 75 Herbicide - 1 Pound (Drive 75 Quinstar) by

- The maximum mix rate for Quinclorac is 0.367 ounce per gallon of water. That comes out to about 1.4 teaspoons of quinclorac per gallon. - Quinclorac 75% - Quinclorac is used to control crabgrass in bermuda and zoysia lawns. It can also be used on athletic fields, schools, commercial properties, landscapes, ornamental beds, and other turf grasses.