Quinclorac 1.5 L with Quinclorac 17.79% is comparable to Drive XLR8 herbicide with 18.92% and is an excellent crabgrass killer. It is a post-emergent, selective herbicide that is superior in crabgrass control. It also treats a broad variety of other grasses and broadleaf weeds. It may be applied in residential or non-residential areas, parks, golf courses, athletic fields and many more locations.
Quinclorac is the "go to" product for killing crabgrass. It is safe for most grasses but don't use it on St. Augustinegrass or on Centipedegrass. If you really want to get the most out of it I would recommend using a surfactant that contains methylated seed oil (MSO). Check out Southern Ag's MSO, it comes in a quart size and is very affordable.
Product Information
Quali Pro's Quinclorac 1.5 L (64 oz)
Quinclorac 1.5 L with Quinclorac 17.79% is comparable to Drive XLR8 herbicide with 18.92%, and is an excellent crabgrass killer. It is a post-emergent, selective herbicide that is superior in crabgrass control. It also treats a broad variety of other grasses and broadleaf weeds. It may be applied in residential or non-residential areas, parks, golf courses, athletic fields and many more locations.
Manufacture recommends a surfactant such as Dyn-Amic Surfactant combined with Quinclorac.
Broadcast Applications
Broadcast: 1.45 oz per 1,000 square feet or 64 oz per acre
Spot Applications: 1.45 oz per 1,000 square feet
Mode of Action
Quinclorac 1.5 is absorbed by the foliage and roots and travels throughout the entire plant. Visible signs of symptoms include stem and leaf twisting and chlorosis. The susceptible grasses will redden and stunted growth followed by necrosis and death.
Application
Apply Quinclorac 1.5 L to actively growing weeds as a spot spray or broadcast spray to turfs listed in Table 1
Bentgrass, creeping1 Bermudagrass, hybrid1 Bluegrass, rough (Poa trivialis) Fescue, Chewing’s Fescue, fine2 Fescue, hard Fescue, red Paspalum, seashore
Bahiagrass Bentgrass, colonial Bentgrass, seaside Centipedegrass Dichondra St. Augustinegrass
1 Yellowing that occurs on these species can be reduced by of sprayable solution of soluble nitrogen fertizier or chelated iron. (see APPLICATION INFORMATION and ADDITION OF ADJUVANTS sections of the product label). 2 Apply QUINCLORAC 1.5 L herbicide to fine fescue only when it is part of a blend. Not to be applied on golf course greens and collars. Consult Table 4 in the label. See the chart on seeding/overseeding/Sprigging Timing for this scenario.