Blackberries and Raspberries

Joe DeFrancesco
Revised March 2014

Boysenberry; Loganberry; blackberries (Marion, Evergreen and other cultivars); and red and black raspberries

BLACKBERRIES AND RASPBERRIES—Site Preparation

glyphosate (numerous product names)

Rate Consult labels

Remarks Apply to weeds at least 10 days before planting crop. Use highest rate on field bindweed. Do not apply if weeds are stressed by drought, weather, or maturity. Rain within 6 hours after application may reduce effectiveness. Inhibits production of three amino acids and protein synthesis.

Site of action Group 9: inhibits EPSP synthase

Chemical family None generally accepted

BLACKBERRIES AND RASPBERRIES—New Plantings and Nonbearing Crops

clethodim (Envoy Plus)

Nonbearing crop only

Rate 1.8 to 2.4 lb ai/A (24 to 32 fl oz/A Envoy Plus)

Time Apply postemergence to actively growing annual or perennial grasses as listed on label.

Remarks Consider environmental and plant growth conditions that affect leaf uptake (see label). Add 0.25% v/v nonionic surfactant to improve efficacy.

Caution Do not exceed 68 fl oz/A per season. Do not apply over top of plants. Do not apply within 1 year of harvest.

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

Chemical family Cyclohexanedione

fluazifop (Fusilade DX)

For new plantings and nonbearing crops

Rate 0.25 to 0.375 lb ai/A (16 to 24 oz/A) depending on target species and growth stage

Time Apply to actively growing grasses, or within 7 days after irrigation, as a directed spray with 1% crop oil or 0.25% nonionic surfactant.

Remarks Identify grasses and adjust rates depending on susceptibility and stage of weed growth, according to label instructions. Results often are erratic on grasses stressed from lack of vigor, drought, high temperature, or low fertility. More mature grasses and quackgrass can be controlled but may require two applications. Annual bluegrass and all fine fescues resist treatment. Inhibits fatty acid production, cell membranes, and new growth.

Caution Do not apply within 1 year of harvest. Grazing is prohibited.

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

Chemical family Aryloxyphenoxy propionate

flumioxazin (Chateau)

Raspberries only; new plantings and nonbearing; Oregon and Washington only

Rate 0.07 lb ai/A (2.2 oz/A Chateau WDG 51%)

Time Post-transplant: after transplanting but before emergence. Directed spray: direct spray to base of primocanes when canes are actively growing. Dormant spray: over the top when canes are dormant. Apply to weed-free soil for preemergence weed control.

Remarks Special local needs labels OR-120018, WA-070005, and WA-120011. Controls several broadleaf weeds.

Caution Do not apply within 1 year of harvest.

Site of action Group 14: protoporphyrinogen oxidase inhibitor

Chemical family N-phenylphthalimide

glyphosate (numerous products)

Rate See label

Time Apply to actively growing weeds.

Remarks Avoid contact with green foliage or suckers of crop. Preharvest interval is 14 days.

Caution Do not exceed 12.8 pints/A per year. Follow all precautions on label.

Site of action Group 9: inhibits EPSP synthase

Chemical family None generally accepted

isoxaben (Gallery 75DF or Trellis)

New plantings and nonbearing crops in alternate-year systems

Rate 0.5 to 1 lb ai/A (0.66 to 1.33 lb/A product) depending on target weed species

Time Apply after transplanting to firm soil, or during the nonbearing year of alternate-year production. Apply before weeds germinate and emerge. Requires sprinkler irrigation or rain (0.5 inch or more) to activate.

Remarks Controls several broadleaf weeds but no grasses. Partially suppresses field bindweed and curly dock at 1 lb ai/A.

Caution Do not apply within 1 year of harvest.

Site of action Group 21: inhibits cell wall biosynthesis Site B

Chemical family Benzamide

trifluralin (2%) + isoxaben (0.5%) (Snapshot 2.5TG)

New plantings and nonbearing crops in alternate-year systems

Rate 2.5 to 5 lb ai/A (100 to 200 lb/A Snapshot 2.5TG), depending on target weed species, length of control desired, and soil conditions.

Time Apply after transplanting to firm soil or during the nonbearing year of alternate-year production. Apply before weeds germinate. Requires sprinkler irrigation or rain (0.5 inch or more) to activate. Results are best if activated within 3 days of application.

Remarks Controls several broadleaf weeds and grasses. Partially suppresses field bindweed and curly dock at 200 lb/A.

Caution Do not apply within 1 year of harvest.

Site of action (isoxaben) Group 21: inhibits cell wall synthesis Site A; (trifluralin) Group 3: microtubule assembly inhibitor

Chemical family (isoxaben) benzamide; (trifluralin) dinitroaniline

napropamide (Devrinol 50DF)

Rate 4 lb ai/A (8 lb/A Devrinol 50DF)

Time Apply after transplanting to firm soil, before weeds germinate. Apply in fall through spring for early weed emergence control.

Remarks The day of treatment, wet soil 2 to 4 inches deep to reduce degradation by sun and to activate herbicide. If convenient, shallow mechanical incorporation appears to improve activation. Inhibits root growth.

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

Chemical family Acetamide

oryzalin (Surflan AS)

Rate 2 to 6 lb ai/A (2 to 6 quarts/A Surflan AS)

Time Apply after transplanting to firm soil, before weeds germinate.

Remarks Do not allow transplant roots to contact treated soil. Requires sprinkler irrigation, rain, or shallow cultivation (1 to 2 inches) for activation. Inhibits cell division or mitosis, primarily in roots.

Site of action Group 3: microtubule assembly inhibitor

Chemical family Dinitroaniline

sethoxydim (Poast)

Rate 0.47 lb ai/A (2.5 pints/A Poast)

Remarks Identify susceptible grasses and apply at optimum growth stage listed on the label. Add 2 pints/A of 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. Inhibits fatty acid production, cell membranes, and new growth. Preharvest interval is 45 days.

Caution Do not exceed 5 pints/A of Poast per season.

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

Chemical family Cyclohexanedione

simazine (Princep 4L)

Rate 2 to 4 lb ai/A (2 to 4 quarts/A Princep 4L)

Time Apply in spring within 2 weeks after transplanting if soil is settled around plant roots. Apply before weeds are established. In plantings less than 6 months old, use half the above rate.

Remarks Requires sprinkler irrigation or rain to activate.

Caution Do not apply on sandy or gravelly soils.

Site of action Group 5: photosystem II inhibitor

Chemical family Triazine

BLACKBERRIES AND RASPBERRIES—Established Plantings—Applications that Persist in the Soil

dichlobenil (Casoron CS and 4G)

Rate 1.96 to 3.92 lb a/A (1.4 to 2.8 gal/A CS formulation); 4 lb ai/A (100 lb/A Casoron 4G)

Time Apply midwinter, immediately before a cold rain to reduce volatility and enhance weed suppression.

Remarks Weigh and distribute uniformly exact quantities over precisely measured areas to ensure accurate applications. The CS formulation (liquid) may allow more precise application rates. In thornless evergreen blackberries, apply November 15 through February 15, but never on light-texture, sandy soils. Oregon results over 9 years suggest perennial weeds can be suppressed with 4-, 3-, and 2-lb ai/A rates applied during 3 consecutive years. Inhibits cellulose and cell wall formation.

Caution Grazing livestock is prohibited. Do not apply during shoot emergence.

Site of action Group 20: inhibits cell wall synthesis Site A

Chemical family Nitrile

diuron (several products)

Rate 1.6 to 2.4 lb ai/A (2 to 3 lb/A of the 80% formulation)

Time Apply in winter as single application, or apply half-doses in October and March.

Remarks Reduce rate or rotate to other herbicides after weed control is achieved. Sprinkler irrigate if applied before fall rains begin. Spray soil around base of plant avoiding crop foliage. Can be rotated with simazine or other herbicides (except terbacil) to reduce weed shifts. (Inhibits photosynthesis.)

Caution Do not use within 1 year after planting. Do not use on plants being tip layered. Do not apply on very sandy or gravelly soils.

Site of action Group 7: photosystem II inhibitor

Chemical family Substituted urea

halosulfuron-methyl (Sandea)

Rate 0.035 to 0.93 lb ai/A (0.5 to 2 oz/A)

Time Pre- or postemergence (nutsedge control)

Remarks For nutsedge control, make a single postemergence application of 0.75 oz/A minimum to nutsedge that has 3 to 5 leaves. Two applications are permissible if additional nutsedge plants emerge, but allow 45 days between applications. Do not irrigate for 3 to 4 days after application to maximize efficacy. Add a non-ionic surfactant to improve activity. Preharvest interval is 14 days. Sandea also can be applied preemergence to control annual weeds including marestail and common groundsel. Preemergence control of nutsedge is poor.

Caution Minimize contact with raspberry and blackberry stems or foliage. Do not apply more than 2 oz/A per year. Do not apply to plants less than 1 year old, or concentrate the spray in the crop row.

Site of action Group 2: acetolactate synthase (ALS) inhibitor

Chemical family Sulfonylurea

mesotrione (Callisto)

Blackberry and raspberry only

Rate 0.09 to 0.18 lb ai/A (3 to 6 fl oz/A Callisto)

Time Apply pre-bloom or as a split application at 3 fl oz/A, no closer than 14 days apart.

Remarks Supplemental label. For control of broadleaf weeds only. Consult labels for tank-mix suggestions. The use of a 1% v/v crop oil concentrate is recommended, but avoid adjuvants that may injure small fruit leaves.

Caution Do not apply after the onset of bloom stage or illegal residues may occur

Site of action Group 27: pigment synthesis inhibitor

Chemical family Triketone

napropamide (Devrinol 50DF)

Rate 4 lb ai/A (8 lb/A Devrinol 50DF)

Time Apply in fall through spring before weeds germinate, or apply foliar-active herbicide to control existing vegetation.

Remarks Irrigation or shallow incorporation is recommended for treatments made November through February, if no rain falls within 2 weeks after applying. Irrigate within 24 hours to wet soil 2 to 4 inches deep when applied March through October. Excessive plant residues on soil surface reduce performance. Inhibits root growth.

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

Chemical family Acetamide

norflurazon (Solicam DF)

Blackberry and raspberry only

Rate 1.95 to 7.8 lb ai/A (2.5 to 10 lb/A Solicam DF)

Time Apply as directed spray from fall to early spring, before weeds emerge and when crop is dormant.

Remarks Soil surface must be weed free and relatively free from plant residues or debris. Apply only once per year. Temporary bleaching or chlorosis may occur. Inhibits yellow pigment formation and bleaches green chlorophyll. Preharvest interval is 60 days.

Caution Do not apply to nursery stock.

Site of action Group 12: bleaching; inhibits carotenoid biosynthesis

Chemical family Pyridazinone

oryzalin (Surflan AS)

Rate 2 to 6 lb ai/A (2 to 6 quarts/A Surflan AS)

Time Apply late fall or early spring to bare soil or after existing vegetation has been destroyed by tillage or use of a foliar-active herbicide.

Remarks Use higher rates or split treatments and apply in fall and spring for longer residual control. Irrigate with at least 0.5 inch water or rain to activate herbicide. Shallow cultivation can control newly germinated weeds without reducing herbicide activity. Allow 24 months before planting vegetables after berries. Inhibits mitosis, primarily in roots.

Site of action Group 3: microtubule assembly inhibitor

Chemical family Dinitroaniline

pronamide (Kerb 50-W, Kerb SC)

Blackberry, raspberry, and boysenberry only

Rate 1 to 3 lb ai/A (2 to 6 lbs/A Kerb 50-W; 2.5 to 7 pints/A Kerb SC)

Time Apply in fall or winter, preferably October to December when ground is not frozen.

Remarks ID-020020 SLN is for Kerb 50-W. Use lower rates on annual grasses, higher rates on perennial grasses such as quackgrass. Requires moisture from rain or irrigation for activation. Use only in berries established at least 3 months. Degraded by microorganisms at higher temperatures. Inhibits root growth.

Caution A restricted-use pesticide. Do not exceed one application per year.

Site of action Group 3: microtubule assembly inhibitor

Chemical family Benzamide

rimsulfuron (Matrix SG)

Blackberry and raspberry only; Oregon and Washington only

Rate 0.0625 lb ai/A (0.25 lb/A Matrix SG)

Time Apply in spring or fall. Preemergence or early postemergence to actively growing weeds.

Remarks Supplemental label. Use a directed spray application and minimize spray contact with caneberry plants. Use only in berries that have gone through one growing season and are in good health.

Matrix will cause chlorosis and/or stunting if applied to emerged primocanes. Avoid injury by applying before primocanes emerge or by directing the spray to avoid the growing points after canes are 3 ft or longer (and not lying on the ground). Tankmixing Matrix with other cane-burning herbicides such as Aim or Goal may lessen the effect of Matrix on primocanes. Preharvest interval is 21 days.

Caution Do not exceed one application per year. When applied as a banded treatment (50% band or less), Matrix SG may be applied twice per year.

Site of action Group 2: Acetolactate synthase (ALS) inhibitor

Chemical family Sulfonylurea

S-metolachlor (Dual Magnum)

Blackberry and raspberry only; Oregon and Washington only

Rate 0.95 to 1.90 lb ai/A (1 to 2 pints/A Dual Magnum)

Time Apply in early spring before weeds emerge.

Remarks Special local needs labels OR-110005 and WA-120002. Apply as a banded application to both sides of the plant row. Lower rates are suggested for canes established less than one year. Requires rainfall or irrigation to activate.

Caution Do not apply more than once at 1.90 lb ai/A rate per season. Preharvest interval is 28 days.

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

Chemical family Acetamide

simazine (Princep)

Rate 1.6 to 4 lb ai/A (3.2 to 8 pints/A)

Time Apply in winter as single application, or apply half-doses in October and March.

Remarks Reduce rate or rotate with other herbicides after weeds are controlled. Requires surface moisture to activate. Apply half-rate on plants less than 6 months old. Can be rotated with diuron or other herbicides (except terbacil) to reduce weed shifts.

Site of action Group 5: photosystem II inhibitor

Chemical family Triazine

sulfentrazone (Zeus XC)

Rate 0.25 to 0.375 lb ai/A (8 to 12 fl oz/A)

Time Apply in fall through spring to bare soil before weeds emerge.

Remarks Only apply to plants that have been in the ground at least three years. Minimize contact with raspberry and blackberry stems or foliage. A hooded or shielded sprayer is required if application is made after petal fall. Requires 0.5 to 1.0 inch of water to activate; if adequate rainfall or irrigation is not received within 7 to 10 days after application, a shallow incorporation may be needed to obtain desired weed control. Do not apply more than 12 fl oz product per acre (0.375 lb ai/A) per season.

Site of action protoporphyrinogen oxidase

(PPO) inhibitor

Chemical family Triazolinone

terbacil (Sinbar)

Rate 0.8 to 1.6 lb ai/A (1 to 2 lb/A Sinbar)

Time Apply higher rate on fine-texture soils or soils high in organic matter, in fall or early spring before fruit set, while weeds are small.

Remarks Sprinkler irrigate if rain does not follow application in 2 weeks. Reduce rates by as much as half or rotate with other herbicides after weeds are controlled. Calibrate sprayer and apply with tractor-mounted, fixed-boom sprayer using a constant speed and delivery rate. Preharvest interval is 70 days.

Caution Do not apply on gravelly soils or soils containing less than 1% organic matter. Do not apply to weak plants or eroded areas with exposed roots. Avoid use for 2 years if replanting is anticipated. Can be rotated with diuron or other herbicides (except simazine) to reduce weed shifts.

Site of action Group 5: photosystem II inhibitor

Chemical family Uracil

BLACKBERRIES AND RASPBERRIES—Established Plantings—Directed Applications in Berry Rows

acetic acid (Weed Pharm)

Rate 15 to 30 gal product/A

Remarks 20% acetic acid. Apply as a directed application to actively growing small weeds. Application equipment must be hooded or shielded. Any contact with the crop will cause crop injury. Weed Pharm can be applied up to and including the day of harvest. Approved for organic production.

Caution This product is a contact, nonselective, herbicide. Avoid contact with desirable caneberry foliage, green bark, or fruit.

clethodim (Select Max)

Rate 0.07 to 0.12 lb ai/A (9 to 16 oz/A Select Max)

Time Apply postemergence to actively growing annual or perennial grasses as listed on label.

Remarks Consider environmental and plant growth conditions that affect leaf uptake (see label). Add 0.25% v/v nonionic surfactant to improve efficacy. Use higher rates to control perennial grasses. Preharvest interval is 7 days.

Caution Do not exceed 64 fl oz/A (0.5 lb ai/A) per season. Do not apply over top of plants.

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

Chemical family Cyclohexanedione

clove or clove leaf oil (Matratec)

Rate 5 to 8% dilution in 25 to 100 gal of water, depending on weed size, temperature, and sunlight intensity.

Time Before weeds are 6 inches tall.

Remarks OMRI listed and WSDA approved herbicide for in-crop use. Apply before crop emerges, or between rows after emergence; avoid contact with desirable foliage. Directed sprays or hooded sprayers are recommended to protect desirable foliage. Works best on annual weeds less than 6 inches. Performance may be erratic depending on environmental conditions. Bright sunlight improves efficacy. No preharvest or re-entry interval.

glyphosate (numerous products)

Blackberries only

Rate Consult labels

Time Apply to actively growing weeds.

Remarks Avoid treatments in late summer when sugars move toward crown. Select application equipment to prevent crop injury by directing spray, or use low-pressure hand-held sprayers or selective applicators. Adjust concentration depending on equipment. Consult label about rate and time of application, especially for perennial weeds. Mixing additional surfactant or ammonium sulfate as label instructs may improve control of slightly stressed weeds. Preharvest interval is 14 days. If repeat applications are necessary, do not exceed a total of 10.6 lb ai/A per year. Inhibits production of three amino acids and protein synthesis.

Caution Grazing is prohibited. In raspberries, the herbicide moves throughout the plant; excessive injury prevents labeling and non-dormant use in this crop. Repeated glyphosate applications have created resistant biotypes of ryegrass in Australian and Oregon orchards. To avoid weed resistance, rotate weed control practices and use products from different herbicide groups.

Site of action Group 9: inhibits EPSP synthase

Chemical family None generally accepted

glyphosate (several products)

Blackberries only

Rate Wiper: 33% solution

Remarks Mix 1 gal product with 2 gal water and wipe weeds, avoiding contact with desirable vegetation. In severe infestations, reduce equipment ground speed or apply in two directions to ensure contact with wiper. (See remarks above.)

Site of action Group 9: inhibits EPSP synthase

Chemical family None generally accepted

limonene (lemon grass oil) (Green Match EX)

Rate 7 to 15% depending on weed size and species; 14% dilution rate, 20% for spot treatment of difficult to control weeds.

Time When weeds are less than 6 inches tall and up to first fruit set.

Remarks Broadspectrum, non-selective contact herbicide that does not translocate. Spot treatments allowed in bearing crops up to one week before harvest. Do not exceed 8.5 gal/A per application in bearing crops. OMRI listed, NOP compliant, and WSDA approved organic burndown herbicide for use in crop and non-crop sites. Foliage contacted by Green Match will be damaged. Directed sprays or hooded sprayers are recommended to protect desirable foliage. Coverage is very important. Leaf damage is visible within hours. Cool weather may slow activity. No re-entry interval. Causes fast wilting or necrosis of the leaves due to removal of waxy cuticle

paraquat (Gramoxone Inteon)

Rate 0.5 to 1 lb ai/A (2 to 4 pints/A Gramoxone Inteon)

Time Apply late winter or early spring before new shoots emerge, or late summer or fall after training new canes.

Remarks Adjust spray volume to thoroughly wet weeds. Add a nonionic surfactant or crop oil concentrate as label specifies, taking care to avoid anionic formulations that react in the tank to form insoluble precipitates. Acts as a contact herbicide; absorbs energy produced by photosynthesis, forming peroxides that disrupt living cells.

Caution A restricted-use herbicide. Do not ingest or inhale spray mist. Wear protective face shields, respirators, and clothing.

Site of action Group 22: photosystem I electron diversion

Chemical family Bipyridilium

sethoxydim (Poast)

Rate 0.47 lb ai/A (2.5 pints/A Poast)

Time Apply at optimum growth stage listed on the label; add 2 pints/A nonphytotoxic crop oil concentrate to improve leaf absorption.

Remarks Identify susceptible grasses. Control often is erratic if grasses are stunted or stressed from drought, high temperatures, or low fertility. Resistant grasses include annual bluegrass and all fine fescues, whereas quackgrass can be suppressed. Inhibits fatty acid production, cell membranes, and new growth. Preharvest interval is 45 days.

Caution Do not exceed 5 pints/A per season.

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

Chemical family Cyclohexanedione

BLACKBERRIES AND RASPBERRIES—Weed Control and Cane Suppression for Mechanical Harvesting

carfentrazone (Aim EC)

Raspberry, blackberry, and boysenberry; Oregon and Washington only

Rate 0.1 lb ai/A (6.4 oz/A Aim EC); consult labels

Time Apply when primocanes are about 6 inches tall. In alternate-year blackberries, do not apply to new canes during nonbearing year.

Remarks Apply as directed application in band to bottom 18 inches of canes. Apply in at least 40 gal/A water. Can reapply at 14- to 21-day intervals. Follow calculations for banded applications. Minimize drift or spotting of crop foliage with large-orifice nozzles and low pressure while directing spray toward base of canes. Preharvest interval is 15 days.

Caution Do not treat caneberries stressed by drought, poor growth, or disease. Do not exceed 0.4 lb ai/A (16 oz/A) per season.

Site of action Group 14: inhibits protoporphyrinogen oxidase

Chemical family Triazinone

oxyfluorfen (Goal 2XL)

Raspberries only; Oregon only

Rate 0.2 to 0.75 lb ai/A (0.75 to 3 pints/A Goal 2XL broadcast)

Time Apply when primocanes have emerged 4 to 6 inches.

Remarks Special local needs label for primocane suppression in raspberries with Goal (OR-020025). Use a minimum spray volume of 50 gal/A broadcast (see label for conversion from broadcast to banded rate). Adding 2 pints 80% active nonionic surfactant per 100 gal spray solution is suggested. Primocane suppression may last 3 to 6 weeks; adjust timing, rate, and number of applications according to plant vigor and desired degree of primocane suppression. Cool, overcast conditions may enhance activity or potential injury to the crop.

Caution Do not exceed 5 pints/A broadcast per season.

Site of action Group 14: inhibits protoporphyrinogen oxidase

Chemical family Diphenylether

oxyfluorfen (Goal 2XL)

Blackberries during bearing year; Oregon only

Rate 0.4 to 0.8 lb ai/A (1.6 to 3.2 pints/A Goal 2XL broadcast)

Time Apply when primocanes have emerged 4 to 6 inches.

Remarks Special local needs label for primocane suppression in blackberries with Goal (OR-020024). Use a minimum spray volume of 50 gal/A broadcast (see label for conversion from broadcast to banded rate). Adding 2 pints 80% active nonionic surfactant per 100 gal spray solution is suggested. Primocane suppression may last 3 to 6 weeks; adjust timing, rate, and number of applications according to plant vigor and desired degree of primocane suppression. Cool, overcast conditions may enhance activity and/or injure the crop. The highest rate and/or additional applications may be required.

Caution Do not exceed 8 pints/A broadcast per season.

Site of action Group 14: inhibits protoporphyrinogen oxidase

Chemical family Diphenylether

oxyfluorfen (Goal 2XL only)

Alternate-year blackberries during nonbearing year; Oregon only

Rate 0.5 to 1 lb ai/A (2 to 4 pints/A Goal 2XL broadcast rate)

Time Apply when desired primocanes reach either the bottom wire or are 4 ft high (typically early to mid-June).

Remarks Special local needs label OR-020026. Apply after desired number of canes have been bundled and trained to trellis wire. Otherwise, next year’s crop potential may be harmed and control of basal growth will be diminished. A second treatment may be required to suppress new growth at base of plant.

Site of action Group 14: inhibits protoporphyrinogen oxidase

Chemical family Diphenylether

pelargonic acid (Scythe)

Rate For annual weeds, a 3 to 5% solution; for burndown or sucker control, a 5 to 7% solution

Time Apply in 75 to 200 gal/A water broadcast when temperatures exceed 45°F. Apply to weeds or primocanes shorter than 6 inches.

Remarks Cool weather after treatment may slow activity and delay or reduce visible effects. Adding a surfactant may enhance control. Preharvest interval is 1 day.

Site of action Unknown

Chemical family Unknown