clethodim (Select Max )

Fluazifop (Fusilade DX), clethodim (Select Max and other tradenames) and sethoxydim (Poast)
WSSA Group 1: acetyl CoA carboxylase (ACCase) inhibitors

Post-emergence control of annual and perennial grasses.

Fluazifop and sethoxydim are registered for use in nonbearing and bearing vineyards; clethodim is registered for use only in nonbearing vineyards that will not be harvested within 1 year after treatment. They are foliage applied, translocated herbicides which will control most actively growing grass weeds. The herbicide will not control annual bluegrass or the fine-leaf fescues. Results can be erratic on grasses stressed from lack of vigor, drought, high temperature, or low fertility.

• Apply fluazifop to actively growing grasses as a directed spray in water. Add 1 quart crop oil concentrate or 0.5 pint nonionic surfactant to 25 gallons of spray material. Apply when susceptible grasses are in the labeled growth stage.
• Apply clethodim to actively growing grasses as a directed spray in water. Add 1 pint of nonionic surfactant to 50 gallons of spray material.
• Apply sethoxydim to actively growing grasses listed on the label at the 4- to 5-leaf stage (6 to 12 inches tall). Add 2 pints of a non-phytotoxic oil concentrate per acre. Do not apply to grasses which are stressed.

At least one weed species resistant to this mode of action documented to occur in ID, OR, or WA; data from Heap, I.

The International Survey of Herbicide Resistant Weeds. Available at www.weedscience.org

Usage for clethodim on Grapes

Post-Emergence (Weeds)