Annual and Perennial Grasses

Postemergence

clethodim (Shadow)

Rate 0.03 to 0.045 lb ai/a (4 to 6 fl oz/a Shadow)

Time After grasses emerge. See label for details.

Remarks Controls annual and perennial grasses. Use adjuvants recommended by the label. REI is 24 hr.

Caution Do not exceed 6 fl oz/a per season. PHI is 70 days. Do not graze. Do not apply after crop begins bolting. Application during bloom period may injure crop. Addition of fertilizer is not recommended for this crop. Does not control rattail fescue.

Site of action Group 1: acetyl CoA Carboxylase (ACCase) inhibitor

Chemical family Cyclohexanedione

clethodim (Intensity One, SelectMax)

Rate 0.068 to 0.091 lb ai/a (9 to 12 fl oz/a Intensity One or SelectMax)

Time After grasses emerge. See label for details.

Remarks Controls annual and perennial grasses. Use adjuvants recommended by the label. REI is 24 hr.

Caution Do not apply after crop has begun bolting. Crop injury may occur if applied during bloom. Do not apply more than 12 fl oz/a in a season. Does not control rattail fescue.

Site of action Group 1: acetyl CoA Carboxylase (ACCase) inhibitor

Chemical family Cyclohexanedione

quizalofop P-ethyl (Assure II, Targa)

Rate 0.03 to 0.08 lb ai/a (5 to 12 fl oz/a Assure II, Targa)

Time Postemergence to grasses. Apply when weeds are young and actively growing. See label for details.

Remarks Controls annual and perennial grasses. Does not control rattail fescue. Use either a nonionic surfactant at 1 quart/100 gal of water or a petroleum-based crop oil at 1 gal/100 gal of water. Crop oil concentrates are the preferred adjuvant in arid regions. REI is 12 hr.

Caution Do not exceed 18 fl oz/a per season. PHI is 60 days. Do not graze.

Site of action Group 1: acetyl CoA Carboxylase (ACCase) inhibitor

Chemical family Aryloxyphenoxy propionate

sethoxydim (Poast)

Rate 0.19 to 0.47 lb ai/a (1 to 2.5 pints/a Poast)

Time Apply to actively growing grasses listed on label. Add 2 pints/a nonphytotoxic crop oil concentrate for ground application to improve leaf penetration.

Remarks Control may be erratic on grasses stressed by lack of vigor, drought, or high temperature. Poast does not control fine fescues, annual bluegrass, or rattail fescue. REI is 12 hr.

Caution Do not apply more than 2.5 pints/a in single application. Do not exceed 5 pints/a of product per year. PHI is 60 days. Do not mix or apply with any other pesticide, additive, or fertilizer except as label directs.

Site of action Group 1: acetyl CoA Carboxylase (ACCase) inhibitor

Chemical family Cyclohexanedione