clethodim (Select Max, Section Three and many other trade names)
Rate 0.094 to 0.25 lb ai/A (9 to 32 fl oz/A depending on weeds present)
Time Apply to actively growing annual or perennial grasses at the appropriate stage of grass growth as indicated on label.
Remarks For grass weed control only. See label for specific rates, weed species, and weed size. Always add a crop oil concentrate at 1% v/v in the finished spray volume. Control may be erratic on grasses stressed by conditions such as drought, temperature extremes, and insect and herbicide damage. Do not apply if rain is expected within 1 hour of application.
Caution Do not exceed 0.25 lb ai/A of clethodim per season. Adding fertilizer to spray solution is not recommended. Preharvest interval is 15 days. Do not use on clover when soil pH is 5.5 or less. See individual labels for restrictions on livestock grazing and feeding, and cutting for forage or hay.
Site of action Group 1: acetyl CoA carboxylase (ACCase) inhibitor
Chemical family Cyclohexanedione
sethoxydim (Poast and other trade names)
Rate 0.19 to 0.47 lb ai/A (16.0 to 40.0 oz/A)
Time Apply to actively growing annual or perennial grasses at growth stage listed on label.
Remarks For grass control only. Most effective on actively growing grasses. See labels for specific rates, weed species, and weed size. Will not control annual bluegrass or fine fescues, and is weak on downy brome and quackgrass. Always add a crop oil concentrate at 2 pints/A.
Caution Control may be erratic on grasses stressed by drought, temperature extremes, insect damage, herbicide injury, or other factors. Do not apply if rain is expected within 1 hr after application. Do not exceed 1.2 lb ai/A per season. See individual labels for restrictions on livestock grazing and feeding, and cutting for forage or hay.
Site of action Group 1: acetyl CoA carboxylase (ACCase) inhibitor
Chemical family Cyclohexanedione
fluazifop (Fusilade DX)
Idaho (ID-950006) only
Rate 0.125 to 0.188 lb ai/A (8.0 to 12.0 oz/A Fusilade DX)
Time Apply to actively growing quackgrass in clover grown for seed.
Remarks Make two applications to quackgrass. Apply the first when quackgrass is 6 inches tall and the second 2 to 3 weeks later, but before the quackgrass is 10 inches tall. Always apply fluazifop with a crop oil concentrate at 1% v/v.
Caution Do not graze or feed treated forage and screenings to livestock. Do not use seed from treated plants for food, feed, or oil. All processed clover seed must be tagged "not for human or animal consumption." The grower is responsible for informing the processing facility that the clover was treated with fluazifop.
Site of action Group 1: acetyl CoA carboxylase (ACCase) inhibitor
Chemical family Aryloxyphenoxy propionate