Swiss Chard Seed

clopyralid (Stinger)

Oregon and Washington only

Rate 0.094 to 0.125 lb ae/a (0.25 to 0.33 pints/a Stinger)

Time Apply in 10 gal or more total spray volume when seed crop has at least two true leaves. Spot applications up to 0.66 pint/a may be applied to Canada thistle. Apply after most thistle basal leaves emerge but before buds form.

Remarks SLN labels OR-090018 and WA-970033. Use above rates for annual weeds 1 to 2 inches high. Re-treat as necessary up to eight-leaf stage of crop growth, but do not exceed 0.66 pint/a Stinger per growing season. Crop safety data are limited, so use only if crop injury is acceptable. Follow rotational crop restrictions on label. Avoid spray drift to sensitive crops.

Caution Do not use any part of the treated field, including seed, seed screenings, hay forage, and stubble, for human or animal consumption.

Site of action Group 4: synthetic auxin

Chemical family Pyridine

EPTC (Eptam 7E)

Oregon and Washington only

Rate 2.0 to 3.0 lb ai/a (2.25 to 3.5 pints/a Eptam 7E)

Time Apply preplant incorporated (OR only), postemergence incorporation after transplant or first true leaves have emerged, or as a layby application at time of last cultivation.

Remarks SLN labels OR-160009 and WA-140001. Product must be incorporated either by rainfall/irrigation or by mechanical means. Eptam has little to no postemergence activity, so emerged weeds must be controlled by incorporation equipment, other herbicide, or hand-weeding near the time of application.

Caution Do not feed or graze table beet forage or fodder. No portion of the treated field, including seed, seed screening, hay forage, and stubble, may be used for human or animal consumption. Do not exceed 3.5 pints EPTAM 7E per acre per crop (except for irrigation applications in the Pacific Northwest Region where two applications of 3.5 pints may be made).

Site of action Group 8: lipid synthesis inhibitor but not an ACCase inhibitor.

Chemical family Thiocarbamate

ethofumesate (Nortron SC)

Oregon and Western Washington only

Rate Consult label.

Time Apply preplant incorporated, preemergence, or postemergence. Postemergence treatment may be repeated in 4 weeks.

Remarks SLN labels OR-160002 and WA-010002. Crop may be injured under unfavorable environmental conditions or when higher rates are used.

Caution Do not feed or graze Swiss chard forage or fodder. Do not use any part of the treated field, including seed, seed screening, hay forage, and stubble, for human or animal consumption.

Site of action Group 16: unknown

Chemical family Benzofuran

fluazifop (Fusilade DX)

Washington only

Rate 0.063 to 0.25 lb ai/a (4 to 16 oz/a Fusilade DX)

Time Apply to actively growing grasses.

Remarks SLN label WA-040006. Identify grasses and adjust rates for susceptibility and stage of weed growth as label instructs. Results often are erratic on grasses stressed by lack of vigor, drought, heat, or low fertility. More mature grasses and quackgrass can be controlled but may require two applications. Annual bluegrass and all fine fescues resist treatment.

Caution Do not exceed 32 oz/a per season. Do not apply if rain is expected within 1 hour. Rotational grass crops such as corn and cereals may not be planted within 60 days of the last application. Grazing any plant products and residues is prohibited.

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

Chemical family Aryloxyphenoxypropionate

quizalofop (Assure II)

Rate 0.069 to 0.17 lb ai/a (5 to 12 oz/a Assure II)

Time Apply at optimum growth stage listed on label.

Remarks Identify susceptible grasses and add 4 quarts crop oil concentrate or 1 quart nonionic surfactant/100 gal spray mix. Grass control may be reduced if applied immediately before or after applying a broadleaf herbicide.

Caution Do not mix with or apply with any other pesticide except as specified on label. Do not apply to plants stressed from lack of moisture, cold, or injury from herbicides, insects, or disease. Do not use any treated part of crop for food or feed. Do not exceed 25 oz/a per season.

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

Chemical family Aryloxyphenoxy propionate

sethoxydim (Poast)

Rate 0.28 to 0.47 lb ai/a (1.5 to 2.5 pints/a Poast)

Time Apply at optimum growth stage listed on label.

Remarks Identify susceptible grasses and add 2 pints/a nonphytotoxic crop oil concentrate to improve leaf absorption. Control often is erratic on grasses stunted or stressed from drought, high temperatures, or low fertility. Resistant grasses include annual bluegrass and all fine fescues, but quackgrass can be suppressed.

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

Chemical family Cyclohexanedione

S-metolachlor (Dual Magnum)

Oregon and Washington only

Rate 0.64 lbs ai/a (0.67 pints/a Dual Magnum)

Time Broadcast preplant with ground application equipment.

Remarks Make a single soil broadcast application of Dual Magnum to the soil surface after planting, but before the weeds or crop emerge (preemergence). Inhibits roots and shoots. SLN indemnified labels OR-040010 and WA-120001 and. This indemnified label is available only through the Syngenta Indemnified Labels website ((https://www.syngenta-us.com/labels/indemnified-label-search)). Follow the steps listed in "Beet seed" section of this chapter to acquire the indemnified label.

Caution Restricted-use herbicide in Washington to protect surface and groundwater. Crop may be injured if environmental conditions are unfavorable. Do not feed or graze forage or fodder, or cut for hay or forage. No part of the treated field, including seed, seed screenings, hay, forage, or stubble, may be used for human or animal consumption. See label for all other precautions and regulations.

Site of action Group 15: inhibits very long chain fatty acid synthesis

Chemical family Chloroacetamide