Publication 75, Guide to Weed Control 2012-2013: Chapter 13. Vegetable Crops

Publication 75, Guide to Weed Control 2012-2013
Chapter 13. Vegetable Crops

User Notice:

The information on this page can only be viewed properly in Internet Explorer 8 or higher. If you are using a lower version of Internet Explorer, a link to the PDF version can be found at the top right hand side of this page.

NOTES: Weed control ratings are given as 0–9 where 0 indicates no control and 9 indicates 90–100% control under ideal conditions. Ratings are subjective values based on best available information and give general comparisons based on use as described in this guide. Crop tolerance ratings are E – Excellent, G – Good, F – Fair, P – Poor. Under unfavourable conditions (e.g. too dry, too wet, too cold, or poor application) the herbicides may not be as effective as indicated. Ratings may vary with weed and crop stage and with the timing and rates of the product(s) being used. Ratings in BOLD indicate the weed is listed on the product label for control or suppression. Please see product label for more information on registered weed species, product uses and precautions.

TABLE 13-1. Vegetable Herbicide Weed Control Ratings

Trade Name	Grasses					Annual Broadleaves								Perennials
Trade Name
Soil Applied Grass Herbicides
DEVRINOL	8	9	8	8	8	5	6	8	5	5	8	7	5	5	5	5	6	5	5	5
DUAL II MAGNUM	9	9	8	9	9	2	2	7	2	8	7/8	4	2	0	0	0	8	4	0	0
EPTAM	9	9	9	9	9	4	7	7	5	7	7	5	5	–	–	–	8	5	–	–
FRONTIER MAX	9	9	8	9	9	2	2	7	2	8	8	4	2	0	0	0	8	0	0	0
Prefar	9	9	–	9	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–	–
Soil Applied Broadleaf Herbicides
GESAGARD	–	–	–	9	–	–	8	9	8	8	8	6	–	–	–	–	–	–	–	–
LOROX DF or L	7	5	5	7	7	8	9	9	9	8	9	8	6	2	2	2	2	2	2	2
PYRAMIN	5	5	5	5	5	8	8	8	8	8	8	8	6	5	5	–	5	5	5	5
Soil Applied Grass and Broadleaf Herbicides
CHATEAU	3	3	3	5	3	–	7	9	–	9	9	7	7	–	–	–	–	–	–	–
COMMAND 360 ME	9	9	–	9	–	–	–	9	–	9	6	8/9	9	–	–	–	–	–	–	–
DACTHAL W-75	6	8	8	8	8	0	0	8	0	0	7	0	0	–	–	–	–	0	0	0
KARMEX or DIUREX 80WDG	9	8	7	8	–	8	8	9	8	7	8	9	–	–	5	–	5	5	5	5
KERB	8	8	8	8	8	–	6	6	7	7	0	0	0	0	0	0	0	0	0	0
NORTRON SC	7	6	7	7	7	8	8	8	8	7	8	8	7	5	5	5	6	5	5	5
PURSUIT	8	7	7	9	9	8	9	9	9	9	9	8	9	–	–	–	7	5	–	–
PRINCEP NINE-T, SIMAZINE 480, SIMADEX	9	8	7	9	9	9	9	9	9	9	9	8	5	2	0	0	5	5	5	5
PROWL H₂O	9	9	9	8	–	–	6	9	–	8	8	2	6	–	–	–	–	–	–	–
SENCOR	7	6	7	8	8	7	9	9	9	3	9	8	8	2	2	2	2	2	2	2
SINBAR	8	7	8	8	8	–	7	8	8	7	7	7	7	–	5	6	6	6	–	6
TREFLAN or RIVAL or BONANZA	9	9	9	9	9	5	7	8	2	2	8	4	2	2	2	2	2	2	2	2
Postemergence Grass Herbicides
ASSURE II	9	8	9	9	9	0	0	0	0	0	0	0	0	0	0	0	0	9	0	0
EXCEL SUPER	9	8	9	9	9	0	0	0	0	0	0	0	0	0	0	0	0	4	0	0
KERB	8	8	6	8	–	–	0	0	0	–	6	0	0	0	0	0	0	8	0	0
POAST ULTRA	9	8	9	9	9	0	0	0	0	0	0	0	0	0	0	0	0	6	0	0
SELECT	9	8	9	8	9	0	0	0	0	0	0	0	0	0	0	0	0	7	0	0
VENTURE L	8	8	9	8	9	0	0	0	0	0	0	0	0	0	0	0	0	8	0	0
Postemergence Broadleaf Herbicides
2,4-D*	0	0	0	0	0	7	4	4	9	7	9	8	8	7	0	0	0	0	8	8
AIM EC (Hooded Sprayer Appl’n.)	0	0	0	0	0	–	–	8	8	8	8	–	8	–	–	–	–	–	–	–
BASAGRAN FORTÉ	0	0	0	0	0	7	9	8	7	7	8	8	9	6¹	2	2	8¹	0	6¹	7¹
BETAMIX	5	5	5	7	5	6	6	8	7	6	8	8	5	5	–	–	5	5	5	5
GOAL 2XL	5	5	5	5	5	9	8	8	9	9	9	8	7	5	5	5	5	5	5	5
LONTREL	5	5	5	5	5	–	7	5	–	5	5	8	5	5	–	–	5	5	7	7
MCPA*	0	0	0	0	0	4	4	9	9	–	9	8	9	7	7	0	0	0	7	7
PARDNER, BROMOTRIL or BROTEX	0	0	0	0	0	9	9	9	8	9	8	9	9	7	0	0	0	0	7	7
PINNACLE SG	0	0	0	0	0	–	8	9	8	3	9	5	8	2	2	2	2	2	2	2
PYRAMIN	5	5	–	5	–	8	8	8	8	8	8	8	–	–	5	–	5	5	5	5
TROPOTOX PLUS or CLOVITOX PLUS or TOPSIDE	0	0	0	0	0	8	8	7	8	7	9	9	9	8	0	0	0	0	8	8
Postemergence Grass and Broadleaf Herbicides
LOROX DF or L	9	7	9	8	9	8	8	8	8	8	8	8	8	7	8	7	8	7	8	7
PRISM	9	8	9	8²	9	–	7	7	9	4³	9	3	6	–	–	–	–	7	–	–
SENCOR	8	7	9	8	9	7	9	8	9	–	8	8	7	–	–	–	–	7	–	–
Postemergence Tank-Mix Options
PRISM + PINNACLE SG	9	8	9	8²	9	–	8	9	9	4³	9	5	8	2	2	2	2	7	2	2
Preharvest and Postharvest
IGNITE	9	9	9	9	9	–	9	9	9	–	9	9	9	8⁴	7⁴	6⁴	0	8⁴	–	–
BOLD numbers indicate the weed is listed on the product label for control or suppression. – Insufficient information available to make a rating. ¹ Good control of these perennial weeds may require two applications, 7–10 days part. ² Yellow foxtail will only be suppressed. ³ Registered for control of hairy nightshade. ⁴ Repeated applications may be necessary if regrowth occurs. * Various formulations available, see Table 4-1. Herbicides Used in Ontario, page 29.

More that 50 vegetable crops are grown commercially in Ontario. Some are seeded, some transplanted, some are annuals, and other crops are perennial, presenting a very diverse group of situations to manage weeds. Weed management involves all aspects of weed control in vegetable crops including scouting, herbicides, cultivation, hoeing, mulches, etc.

Perennial weeds are often a more severe problem in perennial horticultural crops, such as asparagus and need to be controlled prior to planting.

Recommendations for snap beans and sweet corn are listed in the field crop section (Beans, page 97 and Corn, page 119) because they are similar to those for field corn and field beans. Differences are noted where necessary.

Treatments listed for horticultural crops in this publication are based on extensive research trials. Do not use herbicides in cold frames or greenhouses unless specifically recommended.

Horticultural crops are often high value crops. Weed competition is costly. Improper application of herbicides can also be costly. Sprayers used for hormone type herbicides (2,4-D, etc.) should not be used to apply insecticides, fungicides or other herbicides on susceptible horticultural crops.

Herbicide Application Timings

Preplant (PP) Treatments

Preplant treatments are applied before the crop is sown or planted. Some of these herbicides kill seedlings soon after germination while others also kill weed seeds. Most herbicides used for these treatments must be thoroughly incorporated into the soil by cultivation soon after application. Check the label. Also see Preplant Weed Control, Preplant – Site Preparation Prior to any Crop, page 90 for details of products, rates and remarks.

Preplant (PP) Weed and Cover Crop Control

Control cover crops and emerged weeds before seeding or transplanting vegetable crops. Refer to Table 6-1. Non-Selective Herbicides Available for Preplant Site Preparation, page 87. Alternatively, a grower may choose to kill the cover crop and/or emerged weeds just before planting the vegetable crop and either till the area or leave the seedbed untilled.

Preplant Incorporated (PPI)

Two incorporations at right angles operating at a depth of 10 cm using a double disk (7–10 km/hr) or vibrating shank S-tine cultivator (10–13 km/hr) are required unless otherwise stated. Cultivation-type equipment used for herbicide incorporation is known to spread perennial weeds to previously uninfested areas. Special attention should be directed toward machinery cleanliness and/or treating fields with perennial weeds last.

Preemergence (PRE)

Rainfall at 15–20 mm within 7–10 days after application is necessary to activate preemergence treatments. Shallow cultivation, rotary hoeing or harrowing will control weed escapes and improves herbicide activity in the absence of rainfall. These materials prevent emergence of many weed seedlings without reducing crop stand. Apply immediately after seeding or at least before the emergence of the crop. If these materials are applied after weeds have emerged, kill is usually poor. Best results are obtained with this method when conditions for weed seed germination are good.

Postemergence (POST)

These chemicals are applied after the crop plants have sprouted or after the crop has been transplanted. Applied as directed, the weeds can be killed without injury to the crop. Leaf stage of the weeds is critical for good weed control. Smaller weeds are generally easier to kill but there needs to be enough leaf surface to intercept the herbicide. Apply according to recommended leaf stages. Crop stage is important to optimize crop safety. Adjuvants will frequently improve the weed control when used as directed. Weather or other conditions may influence the optimum rate of adjuvant, see the product label for more details. Always use appropriate drift management technology.

Inter-Row Weeding

The herbicide is directed between the crop rows onto the emerged weeds. The herbicide is used as a rescue operation where other methods of weed control have failed. Use special low pressure (7–15 kpa) applicators such as dribble bars or vibra jets equipped with shields to prevent wetting the crop. See Stale Seedbed and Inter-Row Weeding, page 92.

Stale Seedbed Technique

The stale seedbed technique is useful when the soil can be worked well before planting and weeds are allowed to emerge for several weeks. Apply one of the non-selective herbicides listed under the Stale Seedbed and Inter-Row Weeding, page 92. Seeding or planting directly into the killed weeds with minimal soil disturbance will allow the crop to establish before the next flush of weed emergence. Follow up with either cultivation, hoeing or postemergent or directed herbicides to control later germinating weeds. Where registered, some herbicides can be applied after seeding but before crop emergence.

Wiper Applicators for Selective Weed Control

Wiper applicators (rope-wick, roller applicator or similar device) have been extensively used with glyphosate (ROUNDUP). Check product labels for use of this application technique with other herbicides.

TRADE NAME
(Concentration)

active ingredient

PRODUCT RATE

PER HECTARE

active rate per ha

PRODUCT RATE

PER ACRE

PRECAUTIONS

For more information, see Chapter 4, Herbicides Used in Ontario, page 27
and Chapter 5, Notes on Adjuvants, page 77.

Asparagus

Site Preparation Before Planting – See Chapter 6, Preplant Weed Control, page 90.

Preplant (Stale Seedbed Technique)

DUAL II MAGNUM (915 g/L)

s-metolachlor/benoxacor

1.55–1.75 L/ha

1.42–1.6 kg/ha

0.6–0.7 L/ac

Apply before direct seeded or established spears emerge.

Application may result in injury to the asparagus crop, which may include potential stand loss, delayed maturity and even loss of yield.

Apply as a ground application only.

Use ONLY 1 application per year.

Do NOT apply to soil with less than 1% or more than 10% organic matter.

GRAMOXONE (200 g/L)

alone or

followed by

DEVRINOL DF (50 DF)

paraquat

followed by napropamide

2.75–5.5 L/ha

4.5–9 kg/ha

0.55–1.1 kg/ha

2.25–4.5 kg/ha

1.1–2.2 L/ac

1.8–3.6 kg/ac

Apply before direct seeded or seedling spears emerge.

Apply in 300–1,100 L/ha (120–440 L/ac) water. Use the higher volume of water on dense weed growth.

Spray GRAMOXONE to kill emerged seedling weeds before the first asparagus seedlings begin to emerge.

Apply DEVRINOL as a separate application just before a second flush of weeds emerge.

IGNITE (150 g/L)

glufosinate ammonium

2.7–5 L/ha

0.405–0.75 kg/ha

1.08–2 L/ac

Apply before direct seeded or established spears emerge.

Apply in 110–330 L/ha (44–132 L/ac) water.

Spray uniformly on emerged weeds prior to emergence of the crop.

Weeds that have not emerged will not be controlled.

glyphosate (360 g/L)*

or glyphosate (480 g/L)*

or glyphosate (500 g/L)*

or glyphosate (540 g/L)*

glyphosate

1.25–2.5 L/ha

0.94–1.875 L/ha

0.9–1.8 L/ha

0.83–1.67 L/ha

0.45–0.9 kg/ha

0.5–1 L/ac

0.38–0.75 L/ac

0.36–0.72 L/ac

0.33–0.67 L/ac

2nd year and established plantings ONLY.

For control of fall-seeded rye and emerged weeds.

Apply in the spring before spears emerge, but not closer than 7 days to harvest.

Use ONLY 1 application per year.

Soil Applied Grass Herbicides

TREFLAN EC(480 g/L)

or RIVAL EC (500 g/L)

or BONANZA 480 (480 g/L)

trifluralin

2–4.2 L/ha

2–4 L/ha

2.1–4.2 L/ha

1–2 kg/ha

0.8–1.68 L/ac

0.8–1.6 L/ac

0.84–1.68 L/ac

Established plantings ONLY.

PPI – Application should occur early enough in the spring to ensure that spears are not injured by the required incorporation (5–10 cm) or apply after last cutting of spears (postharvest disking) and incorporate.

Established plantings of 3 years or more ONLY.

Apply the higher rates to heavy clay soils.

Soil Applied Broadleaf Herbicides

LOROX DF (50 DF)

or LOROX L (480 g/L)

linuron

3.3–4.3 kg/ha or L/ha

1.6–2.15 kg/ha or L/ha

1.32–1.72 kg/ac or L/ac

2nd year and established plantings ONLY.

PRE – Disk before any shoots appear in the spring on established plantings.

A second application may be made after the postharvest disking.

Use lower rates for lighter soils.

Rates are given for overall sprays; reduce proportionately if only rows are sprayed.

SENCOR 75 DF (75 WG)

metribuzin

1.5 kg/ha

1.125 kg/ha

0.6 kg/ac

2nd year and established plantings ONLY.

PRE – Disk before any shoots appear in the spring on established plantings.

A second application may be made after postharvest disking.

Use lower rates for lighter soils.

Rates are given for overall sprays, reduce proportionately if only rows are sprayed.

Apply in 100–300 L/ha water.

Do NOT harvest for 24 days after application.

Soil Applied Grass and Broadleaf Herbicides

CHATEAU WDG (51.1%)

flumioxazin

0.28–0.42 kg/ha

0.14–0.21 kg/ha

0.11–0.16 kg/ac

1st year crown and established plantings ONLY.

Apply ONCE per season to dormant asparagus established for at least 1 year.

Apply prior to weed emergence.

Apply lower rate on sandy (coarse textured) soils with less than 5% organic matter and the higher rate on clay (medium textured) with less than 5% organic matter.

Injury may result if spears emerge before the application has been activated with water.

Apply by ground application ONLY.

After use, tanks and nozzles must be cleaned with a 3% ammonia solution. Please review label for more detailed instructions.

DEVRINOL DF (50 DF)

napropamide

4.5–9 kg/ha

2.25–4.5 kg/ha

1.8–3.6 kg/ac

Seedlings and new plantings ONLY.

PPI – Incorporation by irrigation or rainfall is essential.

Treat at planting time, or soon after planting before weed seedlings appear.

Use lower rate on sandy soils and the higher rate on clay soils.

KARMEX (80 DF)

or DIUREX 80WDG

diuron

1.1–4.5 kg/ha

8.8–3.6 kg/ha

0.44–1.8 kg/ac

2nd year and established plantings ONLY.

PRE – Disk before any shoots appear in the spring on established plantings.

A second application may be made after the postharvest disking.

Use lower rates for lighter soils.

Rates are given for overall sprays; reduce proportionately if only rows are sprayed.

Do NOT apply if you are planning to take the crop out of production after harvest.

If two applications are being made, do not exceed 3.25 kg/ha on each application.

If using irrigation, only apply 1 application of 4.5 kg/ha.

PRINCEP NINE-T (90 WG)

+ DEVRINOL DF (50 DF)

simazine

+ napropamide

2.5–3.75 kg/ha

9–13.4 kg/ha

2.25–3.38 kg/ha

4.5–6.7 kg/ha

1–1.5 kg/ac

3.6–5.36 kg/ac

2nd year and established plantings ONLY.

PRE – Disk before any shoots and weeds appear in the spring on established plantings.

Use lower rates for lighter soils.

Make no more than two applications per season.

Apply second application after postharvest disking.

Apply in 300 L/ha of water.

Do NOT apply within 6 days of harvest.

Do NOT apply during the cutting season.

Do NOT apply if heavy rain is expected.

PRINCEP NINE-T (90 WG)

or SIMADEX (500 g/L)

or SIMAZINE 480 (480 g/L)

simazine

2.5–3.75 kg/ha

4.5–6.7 L/ha

4.7–7 L/ha

2.25–3.4 kg/ha

1–1.5 kg/ac

1.8–2.68 L/ac

1.88–2.8 L/ac

Established plantings ONLY.

PRE – Apply preemergence to crop and weeds, 7 days before first cutting.

A second application may be made after postharvest disking.

Use lower rates for lighter soils.

Rates are given for overall sprays; reduce proportionately if only rows are sprayed.

Do NOT apply if you are planning to take the crop out of production after harvest.

Do NOT apply if heavy rain is expected.

Do NOT apply during cutting season.

SINBAR (80 WP)

or SINBAR (80 WDG)

terbacil

0.375 kg/ha

0.3 kg/ha

0.15 kg/ac

2nd year and established plantings ONLY.

PRE – Apply before spears emerge, or immediately after clean cutting.

Apply ONLY once throughout the entire growing season.

Apply before weeds emerge, or to small, actively growing weeds (up to 5 cm).

Do NOT use on soils containing less than 1% organic matter, or where subsoil or roots are exposed.

Do NOT use on plants that are weak or diseased, or lacking in vigor (slow growing).

Do NOT harvest within 5 days of treatment.

Treated areas may be replanted to asparagus the following year after application.

Do NOT plant any other crop for 2 years.

Postemergence Grass Herbicides

EXCEL SUPER (80.5 g/L)

fenoxaprop-p-ethyl

0.67 L/ha

0.054 kg/ha

0.27 L/ac

2nd year and established plantings ONLY.

Apply to asparagus ONLY after the spears have been harvested.

Do NOT treat spears prior to or during harvest.

Apply when majority of annual grasses are in the 1–6 leaf stage or until volunteer corn is up to 25 cm tall.

Grasses emerging after application will not be controlled.

POAST ULTRA (450 g/L)

+ MERGE

sethoxydim

+ surfactant/solvent

0.32–1.1 L/ha

0.25–2 L/ha

0.14–0.5 kg/ha

0.25–2 L/ha

0.13–0.44 L/ac

0.1–0.8 L/ac

Apply to direct seeded, 1st year crown, 2nd year and established plantings.

For annual grass, use 0.32 L/ha. Apply at the 1–6 leaf stage (2–5 is optimum).

For volunteer grains, use 0.47 L/ha. Apply at the 1–6 leaf stage (1–4 is optimum).

For quackgrass, use 1.1 L/ha. Apply up to the 3 leaf stage. Thorough preplant tillage will ensure more uniform quackgrass emergence. Cultivate after 7 days in wide row crops. Use the high rate of MERGE for quackgrass.

Use 100–200 L water/ha (40–80 L water/ac).

Grasses emerging after application will not be controlled.

Spray tips angled forward 45° will give better coverage.

Do NOT use flood jet or hollow cone nozzles.

Do NOT apply if rain is expected within 1 hour after application.

Preharvest interval is 40 days.

VENTURE L (125 g/L)

fluazifop-p-butyl

0.6–2 L/ha

0.075–0.25 kg/ha

0.24–0.8 L/ac

Apply to direct seeded, 1st year crown and established plantings.

Apply POST to actively growing grasses before tillering.

Apply 1 application per season only.

Apply at 0.6 L/ha (0.24 L/ac) at 2–5 leaf stage of volunteer corn.

Apply at 0.8 L/ha (0.32 L/ac) at 2–5 leaf stage of volunteer wheat and barley.

Apply at 1 L/ha (0.4 L/ac) at 2–5 leaf stage of annual grasses (2–4 leaf for foxtails).

Apply at 2 L/ha (0.8 L/ac) at 3–5 leaf stage of quackgrass and wirestem muhly.

Thorough preplant tillage, fragmenting quackgrass rhizomes improves control.

Do NOT cultivate between rows until 5 days after application.

Postemergence Broadleaf Herbicides

2,4-D (470 g/L)*

or 2,4-D (564 g/L)*

or 2,4-D (660 g/L)*

2,4-D*

3.5 L/ha

1.7–2.25 L/ha

1.96 L/ha

1–1.6 kg/ha

1.4 L/ac

0.68–0.9 L/ac

0.78 L/ac

2nd year and established plantings ONLY.

After last cutting immediately after harvest or 3 weeks after the post cutting disking. Direct spray to avoid wetting the asparagus fern.

Apply in 50–200 L/ha (20–80 L/ac) water.

May be applied early in the season just after a cutting.

Spray immediately after harvest to avoid injury.

Emerging spears may be twisted and should be discarded. Later emerging spears will be normal.

Postemergence Grass and Broadleaf Herbicides

SINBAR (80 WP)

or SINBAR (80 WDG)

terbacil

0.38 kg/ha

0.3 kg/ha

0.15 kg/ac

Apply before emergence of direct seeded asparagus ONLY.

PRE – Apply as a broadcast treatment within 2 days of seeding.

Plant asparagus seed to a depth of 4 cm in coarse (sandy) soils or 2.5 cm deep in fine (clay) soils into newly cultivated fields.

Post Harvest Herbicides

DUAL II MAGNUM (915 g/L)

s-metolachlor/benoxacor

1.55–1.75 L/ha

1.42–1.6 kg/ha

0.6–0.7 L/ac

Apply after last cutting of established asparagus.

Application may result in injury to the asparagus crop, which may include potential stand loss, delayed maturity and even loss of yield.

Apply as a ground application only.

Use ONLY 1 application per year.

Do NOT apply to soil with less than 1% or more than 10% organic matter.

GRAMOXONE (200 g/L)

alone or

followed by

DEVRINOL DF (50 DF)

paraquat

followed by napropamide

2,75–5.5 L/ha

4.5–9 kg/ha

0.55–1.1 kg/ha

2.25–4.5 kg/ha

1.1–2.2 L/ac

1.8–3.6 kg/ac

Apply after last cutting of established asparagus.

Apply in 300–1,100 L/ha (120–440 L/ac) water. Use the higher volume of water on dense weed growth.

IGNITE (150 g/L)

glufosinate ammonium

2.7–5 L/ha

0.405–0.75 kg/ha

1.08–2 L/ac

Apply after last cutting of established asparagus.

Apply in 110–330 L/ha (44–132 L/ac) water.

glyphosate (360 g/L)*

or glyphosate (480 g/L)*

or glyphosate (500 g/L)*

or glyphosate (540 g/L)*

glyphosate

1.25–2.5 L/ha

0.94–1.875 L/ha

0.9–1.8 L/ha

0.83–1.67 L/ha

0.45–0.9 kg/ha

0.5–1 L/ac

0.38–0.75 L/ac

0.36–0.72 L/ac

0.33–0.67 L/ac

2nd year and established plantings ONLY.

Use ONLY 1 application per year.

Beans (Lima and Snap) – See Chapter 7, Beans, page 97

Beets (Sugar) – See Sugar Beets (Processing), page 271

Beets (Red)

Site Preparation Before Planting – See Chapter 6, Preplant Weed Control, page 90.

Soil Applied Broadleaf Herbicide

PYRAMIN FL (430 g/L)

pyrazon

8.25–10.25 L/ha

3.54–4.4 kg/ha

3.3–4.1 L/ac

PPI or PRE.

PPI – Do NOT incorporate more than 5 cm.

PRE – Apply in 150–300 L/ha (60–120 L/ac) water.

Do NOT use on soils with less than 3% organic matter.

Rainfall or irrigation is required to activate the herbicide.

Soil Applied Grass and Broadleaf Herbicide

DUAL II MAGNUM (915 g/L)

s-metolachlor/benoxacor

1.25 L/ha

1.14 kg/ha

0.5 L/ac

Pre-emergent to weeds.

Apply ONLY as a ground application in 150 L water/ha minimum.

Use ONLY 1 application per year.

Irrigate after application to activate the herbicide if rainfall is not expected, but use only 0.5 inches of water to incorporate the herbicide. Excessive irrigation will increase the risk of crop injury. Mechanical incorporation of DUAL II MAGNUM will increase the risk of crop injury.

DO NOT use DUAL II MAGNUM if the planting operation creates a furrow or trough over the seed-row into which rain or irrigation water will collect and thus concentrate the herbicide over the row.

Application may result in crop injury.

Postemergence Broadleaf Herbicides

AIM EC (240 g/L)

+ AGRAL 90

or AG-SURF

or MERGE

carfentrazone-ethyl

+ non-ionic surfactant

or surfactant/solvent

36.5–117 mL/ha

2.5 L/1,000 L

1 L/1,000 L

8.8–28.1 g/ha

0.25% v/v

0.1% v/v

14.6–46.8 mL/ac

2.5 L/1,000 L

1 L/1,000 L

Apply POST with a hooded sprayer between the rows or between the plastic mulch.

Apply to actively growing weeds up to 10 cm tall.

Apply in a minimum of 100 L/ha (40 L/ac) water.

Do NOT apply closer than 1 day to harvest.

Apply ONLY once per growing season.

BETAMIX β EC ((1:1)153 g/L)

desmedipham/phenmedipham

1.15–1.75 L/ha

0.18–0.28 kg/ha

0.46–0.7 L/ac

The first application must be made when the weeds have reached the cotyledon stage. Kochia must be sprayed during the rosette stage. Wait 5–7 days before repeating application.

Apply in 100–200 L/ha of water.

Do NOT spray more than 5.25 L/ha of BETAMIX per year. Apply no more than three treatments.

Do NOT spray under extreme temperature or drought conditions.

Do NOT spray if dew is present.

Do NOT spray if rainfall is expected within 6 hours.

Temporary reduced growth and/or tip burn may occur. Beets will resume growth in 10 days.

Preharvest interval is 30 days.

PYRAMIN FL (430 g/L)

+ CITOWETT PLUS

pyrazon

+ surfactant

8.25 L/ha

2.5 L/1,000 L water

3.54 kg/ha

0.25% v/v

3.3 L/ac

2.5 L/1,000 L water

For best results, apply before the third true leaf of crop and weeds.

Apply in 300–400 L/ha (120–160 L/ac) water.

Do NOT use any other oils or surfactants, including ASSIST or MERGE or crop injury may result.

UPBEET (50 DF)

+ AGRAL 90

or Agsurf

or Citowett Plus

triflusulfuron-methyl

+ non-ionic surfactant

or + adjuvant

0.036 kg/ha

2.5 L/1,000 L water

2.5L/1,000 L water

17.5–35 kg/ha

0.25% v/v

0.25% v/v

14 kg/ac

2.5 L/1,000 L water

Apply at the 2–4, 4–6, and the 6–8 leaf stages. Use the higher rate for larger weeds and heavy weed populations. UPBEET may be applied up to three times a year. Do NOT use more than 0.108 kg/ha (0.0432 kg/ac) of UPBEET in a season.

Do NOT apply under extreme temperatures or drought conditions.

Do NOT spray if rainfall is expected within 6 hours.

Yellowing of the crop may occur, but beets will recover.

Preharvest interval is 30 days.

Cabbage, Cauliflower, Broccoli, Brussels Sprouts

Site Preparation Before Planting – See Chapter 6, Preplant Weed Control, page 90.

Soil Applied Grass Herbicides

DEVRINOL DF (50 DF)

napropamide

2.25–4.5 kg/ha

1.12–2.25 kg/ha

0.9–1.8 kg/ac

PPI or PRE – Use ONLY on transplanted cabbage, cauliflower, and broccoli.

Use ONLY 1 application per year.

Use the lower rate on light soils (coarse textured sandy and sandy loam).

Apply to well worked soil that is dry enough to permit thorough incorporation to a depth of 2.5–5.0 cm. Incorporate the same day as applied.

Damage to subsequent cover crops can be reduced by tillage across the rows after harvest. Small grains seeded in the fall may be stunted but not otherwise affected.

Do NOT harvest within 60 days.

DUAL II MAGNUM (915 g/L)

s-metolachlor/benoxacor

1.25–1.75 L/ha

1.14–1.6 kg/ha

0.5–0.7 L/ac

PRE to weeds – Apply after transplanting within 2 days, before weeds emerge.

Use the higher rate for heavier weed pressure.

Use ONLY 1 ground application per year in 300 L water/ha.

Do NOT incorporate and do not use on seeded cole crops.

Do NOT apply to soil with less than 1% or more than 10% organic matter.

Use ONLY on transplanted cabbage, cauliflower and broccoli.

Soil Applied Grass and Broadleaf Herbicides

DACTHAL W-75 (75 WP)

chlorthal dimethyl

9–15.5 kg/ha

6.75–11.63 kg/ha

3.6–6.2 kg/ac

PPI or PRE.

Apply in at least 225 L/ha (90 L/ac) of water at a rate of 9–13.5 kg/ha (3.6–5.4 kg/ac) on light sand or sandy loam soils and at a rate of 11–15.5 kg/ha (4.4–6.2 kg/ac) on medium silt loam soils. Do NOT use on muck soils.

Apply immediately after seeding or directly over transplants, preemergence to weeds. If weeds have emerged, cultivate the soil before application.

Rainfall or irrigation (about 1 cm) is necessary for activation.

FRONTIER MAX (900 g/L)

dimethenamaid

756–963 mL/ha

544–693 g/ha

305–390 mL/ac

For use on transplanted cabbage ONLY.

Apply to soil prior to transplant and before weed emergence.

Do NOT harvest within 60 days of application.

TREFLAN EC(480 g/L)

or RIVAL EC (500 g/L)

or BONANZA 480 (480 g/L)

trifluralin

1.2–2.4 L/ha

1.2–2.3 L/ha

1.25–2.3 L/ha

0.6–1.15 kg/ha

0.5–0.96 L/ac

0.5–0.92 L/ac

PPI.

Use ONLY on direct seeded cabbage or cauliflower or on transplants of cabbage, cauliflower, broccoli and Brussels sprouts.

Postemergence Grass Herbicides

EXCEL SUPER (80.5 g/L)

fenoxaprop-p-ethyl

0.67 L/ha

0.054 kg/ha

0.27 L/ac

Do NOT use on Brussels sprouts.

Apply when the majority of annual grasses are in the 1–6 leaf stage or until volunteer corn is up to 25 cm tall. Grasses emerging after application will not be controlled.

The preharvest interval for cabbage is 35 days, broccoli 44 days and cauliflower 43 days.

POAST ULTRA (450 g/L)

+ MERGE

sethoxydim

+ surfactant/solvent

0.32–1.1 L/ha

0.25–2 L/ha

0.15–0.5 kg/ha

0.25–2 L/ha

0.13–0.44 L/ac

0.1–0.8 L/ac

Do NOT use on Brussels sprouts.

Do NOT exceed 0.45 L/ha on broccoli.

For annual grass, use 0.32 L/ha at the 1–6 leaf stage.

For volunteer grains, use 0.47 L/ha.

Use 100–200 L water/ha (40–80 L water/ac).

Do NOT apply closer than 70 days to harvest.

VENTURE L (125 g/L)

fluazifop-p-butyl

0.6–2 L/ha

0.075–0.25 kg/ha

0.24–0.8 L/ac

Apply ONLY 1 POST application per season only to actively growing grasses before tillering.

Apply at 0.6 L/ha (0.24 L/ac) at 2–5 leaf stage of volunteer corn.

Apply at 0.8 L/ha (0.32 L/ac) at 2–5 leaf stage of volunteer wheat and barley.

Apply at 1 L/ha (0.4 L/ac) at 2–5 leaf stage of annual grasses (2–4 leaf for foxtails).

Apply at 2 L/ha (0.8 L/ac) at 3–5 leaf stage of quackgrass and wirestem muhly.

Thorough preplant tillage, fragmenting quackgrass rhizome improves control.

Do NOT cultivate between rows until 5 days after application.

Do NOT harvest for 40 days after application.

Postemergence Broadleaf Herbicides

AIM EC (240 g/L)

+ AGRAL 90

or AG-SURF

or MERGE

carfentrazone-ethyl

+ non-ionic surfactant

or surfactant/solvent

36.5–117 mL/ha

2.5 L/1,000 L

1 L/1,000 L

8.8–28.1 g/ha

0.25% v/v

0.1% v/v

14.6–46.8 mL/ac

2.5 L/1,000 L

1 L/1,000 L

Apply ONLY 1 POST application per growing season with a hooded sprayer between the rows.

Apply to actively growing weeds up to 10 cm tall.

Apply in a minimum of 100 L/ha (40 L/ac) water.

Do NOT apply closer than 1 day to harvest.

LONTREL 360 (360 g/L)

clopyralid

0.56 L/ha

0.20 kg/ha

0.2 L/ac

Use ONLY on transplanted cabbage, cauliflower and broccoli.

Apply POST transplant as a ground application ONLY, in 300 L water/ha.

Use ONLY 1 application per year, no closer than 30 days to harvest.

Carrots

Site Preparation Before Planting – See Chapter 6, Preplant Weed Control, page 90.

Soil Applied followed by Postemergence Grass and Broadleaf Herbicides

TREFLAN EC (480 g/L)

or RIVAL EC (500 g/L)

or BONANZA 480 (480 g/L)

followed by LOROX DF (50 DF)

or LOROX L (480 g/L)

trifluralin

followed by linuron

1.25–2.4 L/ha

1.2–2.3 L/ha

1.25–2.3 L/ha

1.1–3.25 kg/ha or L/ac

0.6–1.15 kg/ha

0.55–1.625 kg/ha or L/ha

0.5–0.96 L/ac

0.5–0.92 L/ac

0.44–1.3 kg/ac or L/ac

PPI followed by POST on mineral soils.

Spray linuron when crop has 2 or more fully developed leaves (8–15 cm tall).

Apply POST before annual grasses are 5 cm high and before broadleaf weeds are 15 cm high.

Carrot leaves will become yellow or light green, but they soon recover.

Use nozzle pressure of 175–275 kPa. Do NOT exceed 275 kPa.

Do NOT apply linuron with herbicidal oil.

Do NOT apply linuron during hot, dry weather (greater than 32°C) or when crop is under stress.

Do NOT apply linuron if heavy rains are expected.

Use the lower rates on sandy soils and for smaller weeds.

Do NOT use on coarse-textured soils low in organic matter or on soils that contain more than 15% organic matter.

GESAGARD 480 SC (480 g/L)

followed by LOROX DF (50 DF)

or LOROX L (480 g/L)

prometryne

followed by linuron

3.75–7.08 L/ha

1.1–2.25 kg/ha or L/ha

1.8–3.4 kg/ha

0.55–1.125 kg/ha or L/ha

1.5–2.83 L/ac

0.44–0.9 kg/ac or L/ac

PRE followed by POST – Use on muck soils ONLY.

For POST – Spray when crop has 2 or more fully developed leaves (8–15 cm tall).

Apply before annual grasses are 5 cm high and broadleaf weeds are 15 cm high.

Carrot leaves will become yellow or light green, but they will soon regain their normal colour.

Do NOT apply during hot, dry weather (greater than 32°C) or when crop is under stress.

Do NOT apply if heavy rains are expected.

Use the lower rates for smaller weeds.

Apply GESAGARD 480 SC once per season. Apply the higher rate of GESAGARD 480 SC to muck soils.

LOROX DF (50 DF)

or LOROX L (480 g/L)

followed by

LOROX DF (50 DF)

or LOROX L (480 g/L)

linuron

followed by linuron

1.1–2.25 kg/ha or L/ha

2.25–4.5 kg/ha or L/ha

0.55–1.125 kg/ha or L/ha

1.125–2.25 kg/ha or L/ha

0.44–0.9 kg/ac or L/ac

0.9–1.8 kg/ac or L/ac

PRE followed by POST.

Do NOT apply the 2nd treatment closer than 2 weeks after the first treatment.

Do NOT apply more than 2 applications per season.

Spray POST when crop has 2 or more fully developed leaves (8–15 cm tall).

Apply POST before annual grasses are 5 cm high and before broadleaf weeds are 15 cm high.

Carrot leaves will become yellow or light green, but they soon recover.

Use nozzle pressure of 175–275 kPa. Do NOT exceed 275 kPa.

Do NOT apply during hot, dry weather (greater than 32°C) or when crop is under stress.

Do NOT apply if heavy rains are expected.

Use the lower rates on sandy soils and for smaller weeds.

Do NOT use on coarse-textured soils low in organic matter.

Soil Applied Broadleaf Herbicides

GESAGARD 480 SC (480 g/L)

prometryne

3.75–7.08 L/ha

1.8–3.4 kg/ha

1.5–2.83 L/ac

PRE – Apply soon after seeding.

Apply in 200–1,000 L/ha (80–400 L/ac) water.

Use the lower rate on sandy soils and the higher rate on muck soils.

Do NOT use at or near the time of emergence.

Do NOT apply as a POST treatment.

LOROX DF (50 DF)

or LOROX L (480 g/L)

linuron

1.1–3.25 kg/ha or L/ha

0.55–1.625 kg/ha or L/ha

0.44–1.3 kg/ac or L/ac

PRE – Apply as a band or broadcast spray after planting but before carrots emerge.

Apply in 200–350 L/ha (80–140 L/ac) water.

Use the lower rate on sandy soils.

Carrots are very sensitive to this treatment at the time of emergence and severe injury can occur at this time if there is a heavy rain or if the area is irrigated.

Soil Applied Grass and Broadleaf Herbicides

TREFLAN EC (480 g/L)

or RIVAL EC (500 g/L)

or BONANZA 480 (480 g/L)

trifluralin

1.2–2.4 L/ha

1.2–2.3 L/ha

1.25–2.3 L/ha

0.576–1.15 kg/ha

0.48–0.96 L/ac

0.48–0.92 L/ac

0.5–0.92 L/ac

PPI – Apply the higher rate to heavy clay soils.

Do NOT apply to soils with more than 15% organic matter.

Postemergent Broadleaf Herbicides

AIM EC (240 g/L)

+ AGRAL 90

or AG-SURF

or MERGE

carfentrazone-ethyl

+ non-ionic surfactant

or surfactant/solvent

36.5–117 mL/ha

2.5 L/1,000 L

1 L/1,000 L

8.8–28.1 g/ha

0.25% v/v

0.1% v/v

14.6–46.8 mL/ac

2.5 L/1,000 L

1 L/1,000 L

Apply POST with a hooded sprayer between the rows.

Apply to actively growing weeds up to 10 cm tall.

Apply in a minimum of 100 L/ha (40 L/ac) water.

Do NOT apply closer than 1 day to harvest.

Apply ONLY once per growing season.

DUAL II MAGNUM (915 g/L)

s-metolachlor/benoxacor

1.2–1.5 L/ha

1.098–1.373 kg/ha

0.48–0.6 L/ac

Post-emergent to weeds.

Apply during the crop’s 3–5 leaf stage and before the weed’s 2 leaf stage.

Apply as a ground application ONLY.

Use ONLY 1 application per year.

Apply in 150–300 L/ha water.

Reduced levels of weed control may be observed when weed densities are high.

Do NOT harvest for 30 days after application.

Postemergence Grass Herbicides

EXCEL SUPER (80.5 g/L)

fenoxaprop-p-ethyl

0.67 L/ha

0.054 kg/ha

0.27 L/ac

Apply when majority of annual grasses are in the 1–6 leaf stage or until volunteer corn is up to 25 cm tall.

Grasses emerging after application will not be controlled.

Do NOT apply if rain is expected within 1 hour after application.

Preharvest interval is 38 days.

POAST ULTRA (450 g/L)

+ MERGE

sethoxydim

+ surfactant/solvent

0.32–1.1 L/ha

0.25–2 L/ha

0.15–0.5 kg/ha

0.25–2 L/ha

0.13–0.44 L/ac

0.1–0.8 L/ac

For annual grass, use 0.32 L/ha. Apply at the 1–6 leaf stage (2–5 is optimum).

For volunteer grains, use 0.47 L/ha. Apply at the 1–6 leaf stage (2–5 is optimum).

Grasses emerging after application will not be controlled.

Use 100–200 L water/ha (40–80 L water/ac).

Spray tips angled forward 45° will give better coverage.

Do NOT use flood jet or hollow cone nozzles.

Do NOT apply if rain is expected within 1 hour after application.

Preharvest interval is 49 days.

VENTURE L (125 g/L)

fluazifop-p-butyl

0.6–2 L/ha

0.075–0.25 kg/ha

0.24–0.8 L/ac

Apply when the crop is 10 cm in height (2–5 leaf stage) or less.

Apply at 0.6 L/ha (0.24 L/ac) at 2–5 leaf stage of volunteer corn.

Apply at 0.8 L/ha (0.32 L/ac) at 2–5 leaf stage of volunteer wheat and barley.

Apply at 1 L/ha (0.4 L/ac) at 2–5 leaf stage of annual grasses (2–4 leaf for foxtails).

Apply at 2 L/ha (0.8 L/ac) at 3–5 leaf stage of quackgrass and wirestem muhly.

Thorough preplant tillage, fragmenting quackgrass rhizomes improves control.

Do NOT cultivate between rows until 5 days after application.

Apply other postemergence herbicides separately at least 3 days after VENTURE L.

Do NOT harvest for 50 days after application.

Postemergence Grass and Broadleaf Herbicides

LOROX DF (50 DF)

or LOROX L (480 g/L)

linuron

2.25–4.5 kg/ha or L/ha

1.125–2.25 kg/ha or L/ha

0.9–1.8 kg/ac or L/ac

For carrots not treated with linuron PRE.

Spray when the crop has 2 or more fully developed leaves (8–15 cm tall).

Apply before annual grasses are 5 cm high and before broadleaf weeds are 15 cm high.

Carrot leaves will become yellow or light green, but they will soon regain their normal colour.

Use nozzle pressure of 175–275 kPa. Do NOT exceed 275 kPa.

Do NOT apply with herbicidal oil.

Do NOT apply during hot, dry weather (greater than 32°C) or when the crop is under stress.

Celery

Site Preparation Before Planting – See Chapter 6, Preplant Weed Control, page 90.

Postemergence Broadleaf Herbicides

AIM EC (240 g/L)

+ AGRAL 90

or AG-SURF

or MERGE

carfentrazone-ethyl

+ non-ionic surfactant

or surfactant/solvent

36.5–117 mL/ha

2.5 L/1,000 L

1 L/1,000 L

8.8–28.1 g/ha

0.25% v/v

0.1% v/v

14.6–46.8 mL/ac

2.5 L/1,000 L

1 L/1,000 L

Apply POST with a hooded sprayer between the rows.

Apply to actively growing weeds up to 10 cm tall.

Apply in a minimum of 100 L/ha (40 L/ac) water.

Do NOT apply closer than 1 day to harvest.

Apply ONLY once per growing season.

Postemergence Grass and Broadleaf Herbicides

GESAGARD 480 SC (480 g/L)

prometryne

3.75–4.58 L/ha

1.8–2.2 kg/ha

1.5–1.83 L/ac

Do NOT apply until 21 days after transplanting the crop when the celery plants are established.

Apply in 200–1,000 L/ha (80–400 L/ac) water in the transplanted crop.

Do NOT use on direct seeded crop.

Apply before weeds reach 5 cm tall.

Apply ONLY once a season.

Preharvest interval is 54 days.

LOROX DF (50 DF)

or LOROX L (480 g/L)

linuron

1.82–4.51 kg/ha or L/ha

0.91–2.26 kg/ha or L/ha

0.73–1.8 kg/ac or L/ac

Apply to transplants as soon as new growth has started. Some temporary discolouration may occur.

All dosages are expressed as broadcast rates. For band treatment use proportionately less.

Do NOT use on sandy or coarse-textured soils low in organic matter (less than 1%), as crop injury may result.

Root Chicory

Postemergence Broadleaf Herbicides

AIM EC (240 g/L)

+ AGRAL 90

or AG-SURF

or MERGE

carfentrazone-ethyl

+ non-ionic surfactant

or surfactant/solvent

36.5–117 mL/ha

2.5 L/1,000 L

1 L/1,000 L

8.8–28.1 g/ha

0.25% v/v

0.1% v/v

14.6–46.8 mL/ac

2.5 L/1,000 L

1 L/1,000 L

Apply POST with a hooded sprayer between the rows.

Apply to actively growing weeds up to 10 cm tall.

Apply in a minimum of 100 L/ha (40 L/ac) water.

Do NOT apply closer than 1 day to harvest.

Apply ONLY once per growing season.

UPBEET (50 DF)

+ AGRAL 90

or AG-SURF

or CITOWETT PLUS

triflusulfuron-methyl

+ non-ionic surfactant

35–7 g/ha

2.5 L/1,000 L

17.5–35 g/ha

0.25% v/v

14–28 g/ac

2.5 L/1,000 L

For the control of velvetleaf.

Apply POST after emergence of chicory and velvetleaf, but prior to the 4 leaf stage of velvetleaf.

Apply in 100–300 L/ha of water.

Do NOT exceed 70 g/ha per season.

If the lower rate has been used and velvetleaf continues to emerge, repeat application in 2–3 weeks.

Do NOT harvest within 60 days of treatment.

Temporary yellowing of the crop may occur.

Postemergence Grass Herbicides

POAST ULTRA (450 g/L)

+ MERGE

sethoxydim

+ surfactant/solvent

0.32–1.1 L/ha

0.25–2 L/ha

0.15–0.5 kg/ha

0.25–2 L/ha

0.13–0.45 L/ac

0.1–0.8 L/ac

Apply to actively growing grasses.

For annual grass, use 0.32 L/ha. Apply at the 2–6 leaf stage.

For volunteer grains, apply at a rate of 0.47 L/ha.

For quackgrass, use 1.1 L/ha. Apply up to the 3 leaf stage. Thorough preplant tillage will ensure more uniform quackgrass emergence. Cultivate after 7 days in wide row crops.

Use the high rate of MERGE for quackgrass.

Grasses emerging after application will not be controlled.

Use 100–200 L water/ha (40–80 L water/ac).

Spray tips angled forward 45° will give better coverage.

Do NOT use flood jet or hollow cone nozzles.

Do NOT apply if rain is expected within 1 hour after application.

Do NOT wait to spray broadleaf weeds if grassy weeds are not in the appropriate stage.

Do NOT apply closer than 60 days to harvest.

Cucumber

Site Preparation Before Planting – See Chapter 6, Preplant Weed Control, page 90.

Preplant (Stale Seedbed Technique)

glyphosate (360 g/L)*

or glyphosate (480 g/L)*

or glyphosate (500 g/L)*

or glyphosate (540 g/L)*

glyphosate

0.75–3.5 L/ha

0.56–2.6 L/ha

0.5–2.5 L/ha

0.5–2.3 L/ha

0.267–1.246 kg/ha

0.3–1.4 L/ac

0.22–1 L/ac

0.21–1 L/ac

0.2–0.92 L/ac

Till and fertilize soil in early spring, and then allow weeds to grow.

Spray weeds just before seeding the crop.

Use low rate for small weeds (8 cm), medium rates for weeds 8–15 cm and higher rate for weeds over 15 cm tall.

Apply recommended PRE or POST herbicides to control new flushes of weeds or use mechanical means of control.

Soil Applied Grass Herbicide

DUAL II MAGNUM (915 g/L)

s-metolachlor/benoxacor

1.2–1.5 L/ha

1.1–1.4 kg/ha

0.5–0.7 L/ac

Apply POST.

Use the higher rate for heavier weed populations.

Apply in 100–300 L/ha water by ground application equipment ONLY.

PREFAR (480 g/L)

bensulide

12–14 L/ha

5.76–6.72 kg/ha

4.8–5.6 L/ac

PPI – For mineral soils ONLY.

Incorporate thoroughly into the soil to a depth of 2.5–5 cm.

Apply in 100–500 L/ha water, ONLY once a year.

Soil Applied Grass and Broadleaf Herbicides

COMMAND 360 ME (360 g/L)

clomazone

0.78–1.17 L/ha

0.28–0.42 kg/ha

0.31–0.47 L/ac

Apply PRE, after seeding but before crop emergence, ONLY once per year. Do NOT incorporate.

For light textured soils – Apply COMMAND at 0.78 L/ha. Do NOT apply to sandy soil.

For heavy textured soils – Apply COMMAND at 1.17 L/ha.

Some rotational cropping restrictions apply (see Table 4-4. Herbicide Crop Rotation and Soil pH Restrictions – Field Crops, page 70).

Apply in 95–375 L/ha water.

Do NOT harvest for 45 days after application.

DACTHAL W-75 (75 WP)

chlorthal dimethyl

9–15.5 kg/ha

6.75–11.625 kg/ha

3.6–6.2 kg/ac

Apply only when cucumber plants have 4–5 true leaves, are well established and growing conditions are favourable for good plant growth otherwise crop injury may result.

Apply PRE prior to weed seed germination. If weeds have emerged, cultivate the soil before application.

Apply at a rate of 9–13.5 kg/ha (3.6–5.4 kg/ac) on light sand or sandy loam soils.

Apply at a rate of 11–15.5 kg/ha (4.4–6.2 kg/ac) on medium silt loam soils.

Do NOT use on muck soils.

Apply in at least 225 L/ha (90 L/ac) of water.

Rainfall or irrigation (about 1cm) is necessary for activation.

Postemergence Broadleaf Herbicides

AIM EC (240 g/L)

+ AGRAL 90

or AG-SURF

or MERGE

carfentrazone-ethyl

+ non-ionic surfactant

or surfactant/solvent

36.5–117 mL/ha

2.5 L/1,000 L

1 L/1,000 L

8.8–28.1 g/ha

0.25% v/v

0.1% v/v

14.6–46.8 mL/ac

2.5 L/1,000 L

1 L/1,000 L

Apply POST with a hooded sprayer between the rows.

Apply to actively growing weeds up to 10 cm tall.

Apply in a minimum of 100 L/ha (40 L/ac) water.

Do NOT apply closer than 1 day to harvest.

Apply ONLY once per growing season.

Postemergence Grass Herbicides

POAST ULTRA (450 g/L)

+ MERGE

sethoxydim

+ surfactant/solvent

0.32–1.1 L/ha

0.25–2 L/ha

0.14–0.5 kg/ha

0.25–2 L/ha

0.13–0.44 L/ac

0.1–0.8 L/ac

For annual grass, use 0.32 L/ha. Apply at the 1–6 leaf stage.

For volunteer grains, use 0.47 L/ha.

Use 100–200 L water/ha (40–80 L water/ac).

Do NOT use flood jet or hollow cone nozzles.

Do NOT apply if rain is expected within 1 hour after application.

Do NOT wait to spray broadleaf weeds if grassy weeds are not in the appropriate stage.

Do NOT apply closer than 30 days to harvest.

VENTURE L (125 g/L)

fluazifop-p-butyl

0.6–2 L/ha

0.075–0.25 kg/ha

0.24–0.8 L/ac

Apply POST to actively growing grasses before tillering.

Apply at 0.6 L/ha (0.24 L/ac) at 2–5 leaf stage of volunteer corn.

Apply at 0.8 L/ha (0.32 L/ac) at 2–5 leaf stage of volunteer wheat and barley.

Apply at 1 L/ha (0.4 L/ac) at 2–5 leaf stage of annual grasses (2–4 leaf for foxtails).

Apply at 2 L/ha (0.8 L/ac) at 3–5 leaf stage of quackgrass and wirestem muhly.

Thorough preplant tillage, fragmenting quackgrass rhizome improves control.

Do NOT cultivate between rows until 5 days after application.

Do NOT harvest for 30 days after application.

ONLY make 1 application per season.

Garlic

Site Preparation Before Planting – See Chapter 6, Preplant Weed Control, page 90.

Soil Applied Grass and Broadleaf Herbicides

DACTHAL W-75 (75 WP)

chlorthal dimethyl

9–18 kg/ha

6.75–13.5 kg/ha

3.6–7.2 kg/ac

PRE – Apply immediately after seeding or directly over transplants, preemergence to weeds.

Apply at a rate of 9–13.5 kg/ha (3.6–5.4 kg/ac) on light sand or sandy loam soils.

Apply at a rate of 11–15.5 kg/ha (4.4–6.2 kg/ac) on medium silt loam soils.

Apply at a rate of 18 kg/ha (7.2 kg/ac) on heavy clay soils.

Do NOT use on muck soils.

Apply in at least 225 L/ha (90 L/ac) of water.

If weeds have emerged, cultivate the soil before application.

Rainfall or irrigation (about 1 cm) is necessary for activation.

DEVRINOL DF (50 DF)

napropamide

2.24–4.5 kg/ha

1.12–2.25 kg/ha

0.9–1.8 kg/ac

PRE – 1 application per year only, prior to crop and weed emergence.

Apply in 200–900 L/ha water.

Use the lower rate on light soils (coarse textured to sandy and sandy loam).

Do NOT apply closer than 60 days to harvest.

Damage to subsequent crops and cover crops can be reduced by tillage across the rows after harvest. Small grains seeded in the fall may be stunted but not otherwise affected.

Postemergence Grass Herbicides

POAST ULTRA (450 g/L)

+ MERGE

sethoxydim

+ surfactant/solvent

0.32–1.1 L/ha

0.25–2 L/ha

0.14–0.5 kg/ha

0.25–2 L/ha

0.13–0.44 L/ac

0.1–0.8 L/ac

For annual grass, use 0.32 L/ha. Apply at the 1–6 leaf stage.

For volunteer grains, use 0.47 L/ha.

Use 100–200 L water/ha (40–80 L water/ac).

Do NOT use flood jet or hollow cone nozzles.

Do NOT apply if rain is expected within 1 hour after application.

Do NOT wait to spray broadleaf weeds if grassy weeds are not in the appropriate stage.

Do NOT apply closer than 50 days to harvest.

Postemergence Broadleaf Herbicides

AIM EC (240 g/L)

+ AGRAL 90

or AG-SURF

or MERGE

carfentrazone-ethyl

+ non-ionic surfactant

or surfactant/solvent

36.5–117 mL/ha

2.5 L/1,000 L

1 L/1,000 L

8.8–28.1 g/ha

0.25% v/v

0.1% v/v

14.6–46.8 mL/ac

2.5 L/1,000 L

1 L/1,000 L

Apply POST with a hooded sprayer between the rows.

Apply to actively growing weeds up to 10 cm tall.

Apply in a minimum of 100 L/ha (40 L/ac) water.

Do NOT apply closer than 1 day to harvest.

Apply ONLY once per growing season.

PARDNER (280 g/L)

or BROTEX (240 g/L)

or BROMOTRIL (240 g/L)

bromoxynil

1 L/ha

1.2 L/ha

0.28 kg/ha

0.29 kg/ha

0.4 L/ac

0.48 L/ac

Apply to actively growing broadleaf weeds at the 1–4 leaf stage.

Apply in 200–300 L water/ha (80–100 L water/ac).

Apply at 275 kPa.

Use ONLY 1 ground application per year.

Do NOT use flood jet nozzles.

Do NOT spray at temperatures above 25°C.

Do NOT apply closer than 58 days to harvest.

Ginseng

Site Preparation Before Planting – See Chapter 6, Preplant Weed Control, page 90.

Preplant or Prior to Crop Emergence (Stale Seedbed Technique)

glyphosate (360 g/L)*

or glyphosate (480 g/L)*

or glyphosate (500 g/L)*

or glyphosate (540 g/L)*

glyphosate

2.5 L/ha

1.86 L/ha

1.8 L/ha

1.67 L/ha

0.75–0.9 kg/ha

1.0 L/ac

0.75 L/ac

0.72 L/ac

0.67 L/ac

Apply POST to weeds once in the spring but before the crop has emerged above the soil.

Apply in 50–100 L water/ha.

Do NOT exceed rate or spray volume as crop injury may result.

Do NOT contact actively growing ginseng foliage.

Do NOT use a fall application in existing/established gardens.

Postemergence Grass Herbicides

VENTURE L (125 g/L)

fluazifop-p-butyl

0.6–2 L/ha

0.075–0.25 kg/ha

0.24–0.8 L/ac

Apply POST up to 3 times/year: early May, late June and/or mid-August.

Apply to actively growing grasses prior to tillering.

Do NOT apply in the year of harvest.

Apply through ground application only.

Postemergence Broadleaf Herbicides

AIM EC (240 g/L)

+ AGRAL 90

or AG-SURF

or MERGE

carfentrazone-ethyl

+ non-ionic surfactant

or surfactant/solvent

36.5–117 mL/ha

2.5 L/1,000 L

1 L/1,000 L

8.8–28.1 g/ha

0.25% v/v

0.1% v/v

14.6–46.8 mL/ac

2.5 L/1,000 L

1 L/1,000 L

Apply POST with a hooded sprayer between the rows.

Apply to actively growing weeds up to 10 cm tall.

Apply in a minimum of 100 L/ha (40 L/ac) water.

Do NOT apply closer than 1 day to harvest.

Apply ONLY once per growing season.

Herbs

Site Preparation Before Planting – See Chapter 6, Preplant Weed Control, page 90.

Soil Applied Grass and Broadleaf Herbicides

DEVRINOL DF (50 DF)

napropamide

2.2–4.4 kg/ha

1.1–2.2 kg/ha

0.88–1.76 kg/ac

PRE or PPI – Use on basil ONLY.

Apply in 200–900 L/ha (80–360 L/ac) water.

ONLY 1 application per year.

Do NOT plant non-labeled crops until 12 months after application to avoid injury.

High rates may result in temporary crop stunting or retardation. However, crops will outgrow the injury and yield is unaffected.

SINBAR (80 WP)

or SINBAR (80 WDG)

terbacil

1.75 kg/ha

1.4 kg/ha

0.7 kg/ac

PRE – Use on peppermint and spearmint ONLY.

Apply once per crop season at the end of September to early October.

Do NOT apply closer than 9 or 10 months to harvest.

Do NOT use on soils with less than 1% organic matter.

Postemergence Grass Herbicides

POAST ULTRA (450 g/L)

+ MERGE

sethoxydim

+ surfactant/solvent

0.32–0.65 L/ha

0.25–2 L/ha

0.14–0.29 kg/ha

0.25–2 L/ha

0.13–0.26 L/ac

0.1–0.8 L/ac

Use on borage, spearmint and peppermint ONLY.

For annual grass, use 0.32 L/ha. Apply at the 1–6 leaf stage.

For volunteer grains, use 0.47 L/ha.

For quackgrass suppression, use 0.65 L/ha. Apply up to the 3 leaf stage. Thorough preplant tillage will ensure more uniform quackgrass emergence. Cultivate after 7 days in wide row crops. Use the high rate of MERGE for quackgrass.

Apply using 100–200 L/ha (40 –80 L/ac) water.

Use the minimum application rate for borage ONLY.

Do NOT harvest borage within 70 days of application.

SELECT (240 g/L)

+ AMIGO

clethodim

+ surfactant

0.125–0.38 L/ha

5–10 L/1,000 L

0.03–0.091 kg/ha

0.5–1% v/v

0.05–0.152 L/ac

0.5% v/v

For use on coriander ONLY.

Apply using ground equipment.

Apply to weeds in the 2–6 leaf stage and when coriander is in the 2–5 leaf stage.

Do NOT exceed 1 application per year.

Do NOT use treated leaves and greens for human consumption.

Do NOT harvest coriander for 60 days after application.

Leeks

Site Preparation Before Planting – See Chapter 6, Preplant Weed Control, page 90.

Postemergence Broadleaf Herbicides

AIM EC (240 g/L)

+ AGRAL 90

or AG-SURF

or MERGE

carfentrazone-ethyl

+ non-ionic surfactant

or surfactant/solvent

36.5–117 mL/ha

2.5 L/1,000 L

1 L/1,000 L

8.8–28.1 g/ha

0.25% v/v

0.1% v/v

14.6–46.8 mL/ac

2.5 L/1,000 L

1 L/1,000 L

Apply POST with a hooded sprayer between the rows.

Apply to actively growing weeds up to 10 cm tall.

Apply in a minimum of 100 L/ha (40 L/ac) water.

Do NOT apply closer than 1 day to harvest.

Apply ONLY once per growing season.

Postemergence Grass and Broadleaf Herbicides

GESAGARD 480 SC (480 g/L)

prometryne

3.75 L/ha

1.8 kg/ha

1.5 L/ac

Apply 2 applications 10 days apart, before weeds are 5 cm high.

Make the first application to well-established transplanted leeks that have produced 1 new fully expanded leaf.

Can be used on either muck or mineral soils.

Do NOT use more than 2 applications a year.

Temporary injury can occur to the lower leaves in some cultivars of leek.

Lettuce

Site Preparation Before Planting – See Chapter 6, Preplant Weed Control, page 90.

Soil Applied Grass and Broadleaf Herbicides

KERB (50 WSP)

propyzamide

2.2 kg/ha

1.1 kg/ha

0.88 kg/ac

For direct seeded lettuce, apply PPI, PRE, or POST after the crop emerges to weed-free soil.

For transplanted lettuce, apply 7–10 days after transplanting to weed-free soil.

Use only once per year.

Do NOT replant lettuce in KERB treated fields in the same year.

Do NOT use on muck soils.

Do NOT apply closer than 55 days to harvest.

Postemergence Broadleaf Herbicides

AIM EC (240 g/L)

+ AGRAL 90

or AG-SURF

or MERGE

carfentrazone-ethyl

+ non-ionic surfactant

or surfactant/solvent

36.5–117 mL/ha

2.5 L/1,000 L

1 L/1,000 L

8.8–28.1 g/ha

0.25% v/v

0.1% v/v

14.6–46.8 mL/ac

2.5 L/1,000 L

1 L/1,000 L

Apply POST with a hooded sprayer between the rows.

Apply to actively growing weeds up to 10 cm tall.

Apply in a minimum of 100 L/ha (40 L/ac) water.

Do NOT apply closer than 1 day to harvest.

Apply ONLY once per growing season.

Postemergence Grass Herbicides

POAST ULTRA (450 g/L)

+ MERGE

sethoxydim

+ surfactant/solvent

0.32–1.1 L/ha

0.25–2 L/ha

0.14–0.5 kg/ha

0.25–2 L/ha

0.13–0.44 L/ac

0.1–0.8 L/ac

For annual grass, use 0.32 L/ha. Apply at the 1–6 leaf stage (2–5 is optimum).

For volunteer grains, use 0.47 L/ha. Apply at the 1–6 leaf stage (2–5 is optimum).

Grasses emerging after application will not be controlled.

Use 100–200 L water/ha (40–80 L water/ac).

Spray tips angled forward 45° will give better coverage.

For transplanted lettuce, apply once a year during the 1–6 leaf stage.

For direct seeded lettuce, two applications can be made.

First application between 1–6 leaf stage and the second application 14–21 days after thinning.

Do NOT exceed an application rate of 1.1 L/ha with direct seeded lettuce.

Do NOT use flood jet or hollow cone nozzles.

Do NOT apply if rain is expected within 1 hour after application.

Preharvest interval is 30 days.

Muskmelon, Watermelon, Squash and Pumpkin

Site Preparation Before Planting – See Chapter 6, Preplant Weed Control, page 90.

Soil Applied Grass Herbicides

DUAL II MAGNUM (915 g/L)

s-metolachlor/benoxacor

1.15 L/ha

1.05 kg/ha

0.46 L/ac

For use ONLY in winter squash and pumpkins.

Apply PRE in direct seeded crops prior to weed emergence OR at the 1–2 leaf stage of winter squash or pumpkin but still PRE to weed emergence.

Make ONLY 1 application per year.

Do NOT harvest within 65 days of treatment.

Reduced control in heavy weed populations may occur.

Application of this product may result in crop injury.

Soil Applied Grass and Broadleaf Herbicides

COMMAND 360 ME (360 g/L)

clomazone

0.78–1.17 L/ha

0.28–0.42 kg/ha

0.31–0.47 L/ac

Apply PRE, once per season. Do NOT incorporate. Apply after seeding but before emergence.

Apply the lower rate for melons.

Apply broadcast at 0.78 L/ha to squash and pumpkins on light soils.

Apply broadcast at 1.17 L/ha to squash and pumpkins on heavy soils.

Some rotational cropping restrictions apply (see Table 4-4. Herbicide Crop Rotation and Soil pH Restrictions: Field Crops, page 70).

Do NOT harvest melons for 60 days after application.

Do NOT harvest squash and processing pumpkins for 45 days after application.

Do NOT apply to Jack-O-Lantern pumpkins.

Do NOT apply to sandy soil.

Consult the product label for varieties sensitive to colouration after application.

DACTHAL W-75 (75 WP)

chlorthal dimethyl

9–15.5 kg/ha

6.75–11.625 kg/ha

3.6–6.2 kg/ac

PRE – apply prior to weed seed germination. If weeds have emerged, cultivate the soil before application.

Do NOT use on Pumpkins.

Apply ONLY when plants have 4–5 true leaves, are well established and growing conditions are favourable for good plant growth otherwise crop injury may result.

Apply at a rate of 9–13.5 kg/ha (3.6–5.4 kg/ac) on light sand or sandy loam soils.

Apply at a rate of 11–15.5 kg/ha (4.4–6.2 kg/ac) on medium silt loam soils.

Do NOT use on muck soils.

Apply in at least 225 L/ha (90 L/ac) of water.

Rainfall or irrigation (about 1 cm) is necessary for activation.

DEVRINOL DF (50 DF)

napropamide

2.24–4.5 kg/ha

1.12–2.25 kg/ha

0.9–1.8 kg/ac

PRE – 1 application per season.

Use on direct seeded pumpkin and squash ONLY.

Apply in 200–900 L/ha (80–360 L/ac) water.

Use the lower rate on light soils (coarse textured, sandy or sandy loam).

Shepherd’s purse and lady’s-thumb may escape treatment at this rate.

Apply before rainfall if irrigation is not available.

Damage to subsequent crops and cover crops can be reduced by tillage across the rows after harvest. Small grains seeded in the fall may be stunted but not otherwise affected.

Postemergence Grass Herbicides

ASSURE II (96 g/L)

+ MERGE

or SURE-MIX

quizalofop-p-ethyl

+ oil concentrate

0.38–0.75 L/ha

5 L/1,000 L

0.036–0.07 kg/ha

0.5% v/v

0.15–0.3 L/ac

5 L/1,000 L

For use on cantaloupe (muskmelon) ONLY.

Make 1 application per year when the crop is at the 2–6 leaf stage.

Apply at the labelled leaf stage of grassy weeds.

Use ground equipment only. Use a minimum of 100 litres of water/ha.

Do NOT enter or allow worker entry into treated areas during the restricted entry interval of 4 days for scouting, irrigation and hand weeding activities.

Do NOT apply within 30 days of harvest.

POAST ULTRA (450 g/L)

+ MERGE

sethoxydim

+ surfactant/solvent

0.32–1.1 L/ha

0.25–2 L/ha

0.14–0.2 kg/ha

0.25–2 L/ha

0.13–0.44 L/ac

0.1–0.8 L/ac

For pumpkins and squash ONLY.

For annual grass, use 0.32 L/ha. Apply at the 1–6 leaf stage.

For volunteer grains, use 0.47 L/ha.

Use 100–200 L water/ha (40–80 L water/ac).

Do NOT apply if rain is expected within 1 hour after application.

Do NOT wait to spray broadleaf weeds if grassy weeds are not in the appropriate stage.

Do NOT apply closer than 30 days to harvest.

Postemergence Broadleaf Herbicides

AIM EC (240 g/L)

+ AGRAL 90

or AG-SURF

or MERGE

carfentrazone-ethyl

+ non-ionic surfactant

or surfactant/solvent

36.5–117 mL/ha

2.5 L/1,000 L

1 L/1,000 L

8.8–28.1 g/ha

0.25% v/v

0.1% v/v

14.6–46.8 mL/ac

2.5 L/1,000 L

1 L/1,000 L

Apply POST with a hooded sprayer between the rows.

Apply to actively growing weeds up to 10 cm tall.

Apply in a minimum of 100 L/ha (40 L/ac) water.

Do NOT apply closer than 1 day to harvest.

Apply ONLY once per growing season.

Onions

Site Preparation Before Planting – See Chapter 6, Preplant Weed Control, page 90.

Most experience with herbicides below has been with the seeded crop. Experience with sets and limited experience with Spanish onions have been satisfactory. On green bunching onions, the granular formulations (applied when the leaves are dry) help to avoid leaf injury.

Soil Applied Grass and Broadleaf Herbicides

CHATEAU WDG (51.1%)

flumioxazin

0.14 kg/ha

0.07 kg/ha

0.056 kg/ac

Apply ONCE per season.

Apply to transplanted onions between the 2–6 leaf stage and on direct seeded onions between the 3–6 leaf stage prior to weed emergence.

Apply to coarse and medium textured soils with less than 5% organic matter and to muck soils.

Apply using ground application ONLY.

DO NOT apply through irrigation equipment.

Severe crop injury will result when soils are flooded or poorly drained following application and/or if applications are made under cool, wet conditions.

After use, tanks and nozzles must be cleaned with a 3% ammonia solution. Please review label for more detailed instructions.

Do NOT harvest within 45 days of treatment.

DACTHAL W-75 (75 WP)

chlorthal dimethyl

9–18 kg/ha

6.75–13.5 kg/ha

3.6–7.2 kg/ac

PRE – Apply immediately after seeding or directly over transplants, preemergence to weeds.

Apply at a rate of 9–13.5 kg/ha (3.6–5.4 kg/ac) on light sand or sandy loam soils.

Apply at a rate of 11–15.5 kg/ha (4.4–6.2 kg/ac) on medium silt loam soils.

Apply at a rate of 18 kg/ha (7.2 kg/ac) on heavy clay soils.

Do NOT use on muck soils.

Apply in at least 225 L/ha (90 L/ac) of water.

If weeds have emerged, cleanly cultivate the soil before application.

Rainfall or irrigation (about 1 cm) is necessary for activation.

Postemergence Grass Herbicides

EXCEL SUPER (80.5 g/L)

fenoxaprop-p-ethyl

0.67 L/ha

0.054 kg/ha

0.27 L/ac

Apply to annual grasses in the 1–6 leaf stage, or until volunteer corn is 25 cm tall.

Annual grasses will not be controlled if emergence occurs after application.

Apply to dry bulb onions ONLY.

Do NOT apply if rain is expected within 1 hour after application.

Preharvest interval is 38 days.

FRONTIER MAX (720 g/L)

dimethenamid

0.963–1.29 L/ha

0.69–0.93 kg/ha

0.39–0.52 L/ac

DRY BULB ONIONS:

Apply ONLY at the loop stage of onion.

Yellow nutsedge will be suppressed when applied to dry bulb onions grown on muck soils only before yellow nutsedge has emerged.

Apply ONLY once per growing season.

Pre-harvest interval of 60 days.

GREEN ONIONS:

Redroot pigweed and eastern black nightshade will be controlled in green onions grown on mineral soil. There will be reduced competition from redroot pigweed and yellow nutsedge will be suppressed in green onions grown on muck soil.

Apply alone as a single application at a rate of 963 mL/ha to green onions on mineral soil and 1.29 L/ha on muck soil at the loop stage and before weed emergence. Application made prior to the loop stage of green onion may result in significant crop injury, including possible stand reduction.

Emerged weeds will not be controlled.

Avoid application under cool conditions as stunting may result.

Pre-harvest interval of 30 days.

POAST ULTRA (450 g/L)

+ MERGE

sethoxydim

+ surfactant/solvent

0.32–1.1 L/ha

0.25–2 L/ha

0.14–0.5 kg/ha

0.25–2 L/ha

0.13–0.44 L/ac

0.1–0.8 L/ac

For dry bulb onions ONLY.

For annual grass, use 0.32 L/ha. Apply at the 1–6 leaf stage.

For volunteer grains, use 0.47 L/ha.

Use 100–200 L water/ha (40–80 L water/ac).

Do NOT apply if rain is expected within 1 hour after application.

Do NOT apply closer than 50 days to harvest.

SELECT (240 g/L)

+ AMIGO

or ARROW (240 g/L)

clethodim

+ surfactant

0.38 L/ha

5 L/1,000 L

0.09 L/ha

0.5% v/v

0.15 L/ac

5 L/1,000 L

For use on dry bulb onions.

For suppression of annual bluegrass and the control of other annual grasses and quackgrass.

See label for detailed information on rates to control all annual grasses.

Apply using ground equipment.

Apply when the crop is in the 1–4 leaf stage and grassy weeds are in the 2–6 leaf stage.

Do NOT exceed 1 application per year.

Do NOT harvest for 45 days after application.

VENTURE L (125 g/L)

fluazifop-p-butyl

0.6–2 L/ha

0.075–0.25 kg/ha

0.24–0.8 L/ac

Apply POST to actively growing grasses before tillering.

Apply at 0.6 L/ha (0.24 L/ac) at 2–5 leaf stage of volunteer corn.

Apply at 0.8 L/ha (0.32 L/ac) at 2–5 leaf stage of volunteer wheat and barley.

Apply 1 L/ha (0.4 L/ac) at 2–5 leaf stage of annual grasses (2–4 leaf for foxtails).

Apply at 2 L/ha (0.8 L/ac) at 3–5 leaf stage of quackgrass and wirestem muhly.

Apply in a maximum volume of 300 L/ha (120 L/ac).

Thorough preplant tillage, fragmenting quackgrass rhizomes improves control.

Do NOT cultivate between rows until 5 days after application.

If using a rate of 1 L/ha, Do NOT apply closer than 42 days before harvest.

If using a rate of 2 L/ha, Do NOT apply closer than 60 days before harvest.

Postemergence Broadleaf Herbicides

AIM EC (240 g/L)

+ AGRAL 90

or AG-SURF

or MERGE

carfentrazone-ethyl

+ non-ionic surfactant

or surfactant/solvent

36.5–117 mL/ha

2.5 L/1,000 L

1 L/1,000 L

8.8–28.1 g/ha

0.25% v/v

0.1% v/v

14.–46.8 mL/ac

2.5 L/1,000 L

1 L/1,000 L

Apply POST with a hooded sprayer between the rows.

Apply to actively growing weeds up to 10 cm tall.

Apply in a minimum of 100 L/ha (40 L/ac) water.

Do NOT apply closer than 1 day to harvest.

Apply ONLY once per growing season.

GOAL 2XL (240 g/L)

oxyfluorfen

0.5 L/ha

0.12 kg/ha

0.2 L/ac

Apply after onions have 2 fully developed leaves and when weeds are in the 2–4 leaf stage.

Apply in minimum of 500 L/ha (200 L/ac) water.

Do NOT exceed a total of 2.0 L/ha (0.8 L/ac) per year.

Do NOT harvest within 56 days of treatment.

Do NOT apply to sandy soil.

PARDNER (280 g/L)

or BROMOTRIL (240 g/L)

bromoxynil

0.5 L/ha

0.6 L/ha

0.14 kg/ha

0.2 L/ac

0.24 L/ac

For use ONLY on dry bulb onions.

Apply POST to actively growing pigweed and common groundsel up to the 4 leaf stage.

Apply when onions are at the 2–3 leaf stage, repeat application when onions are at the 4–5 leaf stage.

Apply in 200 L/ha (80 L/ac) water at a pressure of 170 kPa (25 psi).

Do NOT harvest within 75 days of application.

Severe leaf burn may result in onions if weather conditions have not been conducive to the development of the outer waxy layer of the onion leaf.

Postemergence Grass and Broadleaf Herbicides

PROWL H2O (455 g/L)

pendimethalin

2.2–3.3 L/ha

1–1.5 kg/ha

0.89–1.34 L/ac

For mineral soils, use on direct seeded dry bulb onions.

Apply at the 2–6 leaf stage of crop development for season long control.

Destroy existing weeds prior to application.

Do NOT exceed more than two applications a year.

Apply in a minimum of 250 L/ha water.

Best results occur when rainfall or irrigation is received within 7 days after application.

PROWL H2O (455 g/L)

pendimethalin

6.6 L/ha

3 kg/ha

2.67 L/ac

For muck soils, use on direct seeded dry bulb onions.

Apply at the loop and/or 2 leaf stage of crop development for season long control. Application at both growth stages is required for season-long control.

Destroy existing weeds prior to application.

Do NOT exceed more than two applications a year.

Apply in a minimum of 250 L/ha water.

Best results occur when rainfall or irrigation is received within 7 days after application.

Parsnips

Site Preparation Before Planting – See Chapter 6, Preplant Weed Control, page 90.

Soil Applied Grass and Broadleaf Herbicides

LOROX DF (50 DF)

or LOROX L (480 g/L)

linuron

1.25–2.4 kg/ha or L/ha

0.625–1.2 kg/ha

0.5–0.96 kg/ac or L/ac

PRE – Apply soon after seeding, prior to crop emergence.

Plant seed at least 1.3 cm deep.

Use a rate of 1.25–1.82 kg/ha on loam or clay soil with low organic matter.

Use a rate of 1.82–2.4 kg/ha on muck soil or clay soil with medium organic matter.

Heavy rains or irrigation at time of emergence may cause injury.

An additional postemergence treatment may be needed.

Do NOT apply within 60 days of harvest.

LOROX DF (50 DF)

or LOROX L (480 g/L)

followed by LOROX DF (50 DF)

or LOROX L (480 g/L)

linuron

followed by linuron

1.25–1.82 kg/ha or L/ha

1.25–2.4 kg/ha or L/ha

0.625–0.91 kg/ha

0.625–1.2 kg/ha

0.5–0.73 kg/ac or L/ac

0.5–0.96 kg/ac or L/ac

PRE (maximum 1.82 kg/ha), followed by POST (maximum 2.4 kg/ha).

These treatments must be applied at least 2 weeks apart or crop injury may result.

Do NOT apply more than these 2 applications per season and Do NOT use higher rates.

Observe instructions for both PRE and POST use carefully before using.

Do NOT apply within 60 days of harvest.

Postemergence Broadleaf Herbicides

AIM EC (240 g/L)

+ AGRAL 90

or AG-SURF

or MERGE

carfentrazone-ethyl

+ non-ionic surfactant

or surfactant/solvent

36.5–117 mL/ha

2.5 L/1,000 L

1 L/1,000 L

8.8–28.1 g/ha

0.25% v/v

0.1% v/v

14.6–46.8 mL/ac

2.5 L/1,000 L

1 L/1,000 L

Apply POST with a hooded sprayer between the rows.

Apply to actively growing weeds up to 10 cm tall.

Apply in a minimum of 100 L/ha (40 L/ac) water.

Do NOT apply closer than 1 day to harvest.

Apply ONLY once per growing season.

Postemergence Grass and Broadleaf Herbicides

LOROX DF (50 DF)

or LOROX L (480 g/L)

linuron

1.82–4.51 kg/ha or L/ha

0.91–2.26 kg/ha or L/ha

0.73–1.80 kg/ac or L/ac

Apply when the crop has 2 or more fully developed leaves.

Use lower rates on small seedling weeds and higher rates on established weeds.

On muck soils, parsnips must be more than 8 cm tall when spraying.

Do NOT mix with oil or other surfactants.

Apply in 220–440 L/ha (88–176 L/ac) water.

Apply before annual grasses exceed 5 cm and before broadleaf weeds exceed 15 cm.

During hot, dry weather, spray in the cool part of the day to avoid crop injury.

Nozzle pressure must not exceed 275 kPa (40 psi) as crop injury may result.

If unusually heavy rains follow application, severe injury may result.

Do NOT apply within 60 days of harvest.

Peas

Site Preparation Before Planting – See Chapter 6, Preplant Weed Control, page 90.

Soil Applied Grass Herbicides

DUAL II MAGNUM (915 g/L)

s-metolachlor/benoxacor

1.25–1.75 L/ha

1.14–1.6 kg/ha

0.5–0.7 L/ac

PRE – Apply by ground application equipment ONLY.

Do NOT use on muck, peat, high organic matter soils or soils with less than 1% organic matter.

Use the higher rate for heavier weed populations.

Apply in 150–250 L/ha water.

TREFLAN EC(480 g/L)

or RIVAL EC (500 g/L)

or BONANZA 480 (480 g/L)

trifluralin

1.2–1.7 L/ha

1.2–1.6 L/ha

1.25–1.7 L/ha

0.6–0.8 kg/ha

0.5–0.7 L/ac

0.5–0.64 L/ac

0.5–0.68 L/ac

PPI – Incorporate within 24 hours of application.

Do NOT exceed the low rate on medium textured soils.

Do NOT exceed the high rate on heavy textured soils.

Do NOT apply to peat or muck soils (greater than 15% organic matter).

Do NOT apply to soils with less than 2% organic matter.

Do NOT apply to fields spread with manure within the last 12 months.

Do NOT apply by air.

Soil Applied Broadleaf Herbicides

GESAGARD 480 (480 g/L)

prometryne

3.75–4.58 L/ha

1.8–2.2 kg/ha

1.5–1.83 L/ac

PRE – Apply only once per year before weeds emerge, including eastern black nightshade.

Apply in 200–1,000 L/ha (80–400 L/ac) water.

Dry soil may need light incorporation.

Use lower rate on sandy soils.

Preharvest interval is 55 days.

Soil Applied Grass and Broadleaf Herbicides

PURSUIT (240 g/L)

or PHANTOM (240 g/L)

imazethapyr

0.312 L/ha

0.075 kg/ha

0.125 L/ac

PPI or PRE – only once per year.

Apply in 200 L/ha water.

Allow at least 24 months between PPI applications.

Preharvest interval is 50 days.

Postemergence Grass Herbicides

POAST ULTRA (450 g/L)

+ MERGE

sethoxydim

surfactant/solvent

0.32–1.1 L/ha

0.25–2 L/ha

0.14–0.5 kg/ha

0.25–2 L/ha

0.13–0.44 L/ac

0.1–0.8 L/ac

For annual grass, use 0.32 L/ha. Apply at the 1–6 leaf stage (2–5 is optimum).

For volunteer grains, use 0.47 L/ha. Apply at the 1–6 leaf stage (2–5 is optimum).

Grasses emerging after application will not be controlled.

Use 100–200 L water/ha (40–80 L water/ac).

Do NOT apply herbicides other than MCPA SODIUM 300 or PURSUIT within 4 days of application.

Do NOT graze treated crop.

Spray tips angled forward 45° will give better coverage.

Do NOT use flood jet or hollow cone nozzles.

Do NOT apply if rain is expected within 1 hour after application.

Use ONLY on fresh or dry processing peas, not on fresh edible pod peas.

Preharvest interval is 30 days for fresh processing peas.

Preharvest interval is 60 days for dry peas.

Postemergence Broadleaf Herbicides

AIM EC (240 g/L)

+ AGRAL 90

or AG-SURF

or MERGE

carfentrazone-ethyl

+ non-ionic surfactant

or surfactant/solvent

36.5–117 mL/ha

2.5 L/1,000 L

1 L/1,000 L

8.8–28.1 g/ha

0.25% v/v

0.1% v/v

14.6–46.8 mL/ac

2.5 L/1,000 L

1 L/1,000 L

Apply POST with a hooded sprayer between the rows.

Apply to actively growing weeds up to 10 cm tall.

Apply in a minimum of 100 L/ha (40 L/ac) water.

Do NOT apply closer than 1 day to harvest.

Apply ONLY once per growing season.

BASAGRAN (480 g/L)

+ SUPER SPREADER

or ASSIST

bentazon

+ surfactant

or oil concentrate

1.75–2.25 L/ha

1.25–2.5 L/1,000 L

1–2 L/ha

0.84–1.08 kg/ha

0.125–0.25% v/v

0.7–0.9 L/ac

1.25–2.5 L/1,000 L

0.4–0.8 L/ac

Apply POST when peas have at least 3 pairs of leaves and before flowering.

Under hot, humid conditions reduce ASSIST oil concentrate to 1 L/ha (0.4 L/ac).

Refer to the BASAGRAN label for information on specific weed stage and height. Two applications, 10 days apart, of 1.75 L/ha (0.7 L/ac) may be required for top growth control of nutsedge and Canada thistle, and suppression of field bindweed.

Do NOT apply if rain is expected within 6 hours after application.

Apply the higher rate of SUPER SPREADER if hard water is being used.

MCPA SODIUM 300 (300 g/L)*

or MCPA AMINE (500 g/L)*

MCPA*

or MCPA*

1–1.5 L/ha

0.55–0.7 L/ha

0.3–0.45 kg/ha

0.275–0.35 kg/ha

0.4–0.6 L/ac

0.22–0.28 L/ac

Apply POST when peas are 10–20 cm high.

Do NOT apply after flower buds have formed on peas.

Do NOT apply when temperatures are over 27°C, high humidity, or under drought conditions.

Do NOT apply by air.

Apply in at least 150 L/ha water.

Apply the lower rate of MCPA AMINE for control of wild mustard.

TROPOTOX PLUS (400 g/L)

or CLOVITOX PLUS (400 g/L)

or TOPSIDE (400 g/L)

MCPB/MCPA

2.75–4.25 L/ha

1.1–1.7 kg/ha

1.1–1.7 L/ac

Apply POST when peas have 3–6 expanded leaves.

Do NOT apply after the 6 leaf stage as damage may occur.

Do NOT apply when temperatures are over 27°C, high humidity, or under drought conditions.

Do NOT apply by air.

Do NOT graze or cut treated crop for forage.

Top growth only: Canada thistle, creeping buttercup, field bindweed, horsetail, perennial sow-thistle, tall buttercup.

Apply only ONCE a year.

Peppers

Site Preparation Before Planting – See Chapter 6, Preplant Weed Control, page 90.

All treatments should be applied in 150–300 L/ha (60–120 L/ac) water. Discussion of cultural methods can be found in the Tomatoes (Transplanted) section, page 275. Weed control in peppers is best accomplished by combining chemical and cultural methods.

Soil Applied Grass Herbicides

TREFLAN EC(480 g/L)

or RIVAL EC (500 g/L)

or BONANZA 480 (480 g/L)

trifluralin

1.2–2.4 L/ha

1.2–2.3 L/ha

1.25–2.3 L/ha

0.58–1.15 kg/ha

0.5–0.96 L/ac

0.48–0.92 L/ac

0.5–0.92 L/ac

PPI – Incorporate within 24 hours of application.

Apply in at least 100 L/ha water.

Do NOT exceed the low rate on medium textured soils.

Do NOT apply to peat or muck soils (greater than 15% organic matter).

Do NOT apply to soils with less than 2% organic matter.

Do NOT apply to fields spread with manure within the last 12 months.

Do NOT apply by air.

Do NOT apply on the same land for 2 consecutive years.

Soil Applied Grass and Broadleaf Herbicides

CHATEAU WDG (51.1%)

flumioxazin

0.14–0.21 kg/ha

0.07154–0.1073 kg/ha

0.056–0.084 kg/ac

Apply before transplanting field peppers.

Apply the higher rate to medium-textured soils and the lower rate to coarse-textured soils.

Apply product with a hooded or shielded sprayer to row middles.

Do NOT apply more than 0.21 kg/ha a season.

Peppers should be planted in raised or plastic mulch beds. See product label for bed requirements.

Apply to all coarse and medium textured soils with less than 5% organic matter.

Rainfall or irrigation is required after transplanting and before application.

DO NOT apply through irrigation equipment.

After use, tanks and nozzles must be cleaned with a 3% ammonia solution. Please review label for more detailed instructions.

DUAL II MAGNUM (915 g/L)

s-metolachlor/benoxacor

1.15–1.25 L/ha

1.05–1.14 kg/ha

0.46–0.5 L/ac

Apply within 48 hours of transplanting peppers and PRE to weeds.

Risk of crop injury increases with early transplanting and soil temperatures below 10°C.

Applications made more than 48 hours after transplanting may increase the risk of foliar injury.

Do NOT harvest peppers within 80 days of application.

Do NOT apply to soils that contain less than 1% or more than 10% organic matter.

Make ONLY 1 application per year.

Apply by ground application.

Apply in a minimum spray volume of 150 L/ha of water.

Do NOT tank-mix with fluid fertilizers, oil, oil concentrates or surfactants.

DACTHAL W-75 (75 WP)

chlorthal dimethyl

9–15.5 kg/ha

6.75–11.625 kg/ha

3.6–6.2 kg/ac

PRE – If weeds have emerged, cultivate the soil before application.

Apply 4–6 weeks after transplanting or when direct seeded plants have reached a height of 10-15 cm.

Apply at a rate of 9–13.5 kg/ha (3.6–5.4 kg/ac) on light sand or sandy loam soils.

Apply at a rate of 11–15.5 kg/ha (4.4–6.2 kg/ac) on medium silt loam soils.

Do NOT use on muck soils.

Apply in at least 225 L/ha (90 L/ac) of water.

Rainfall or irrigation (about 1 cm) is necessary for activation.

DEVRINOL DF (50 DF)

napropamide

2.25–4.5 kg/ha

1.12–2.25 kg/ha

0.9–1.8 kg/ac

PPI – Incorporate within 24 hours of application.

Do NOT apply to soils with over 10% organic matter.

Damage to subsequent cover crops can be reduced by tillage across the rows after harvest. Small grains seeded in the fall may be stunted but not otherwise affected.

Postemergence Grass Herbicides

POAST ULTRA (450 g/L)

+ MERGE

sethoxydim

+ surfactant/solvent

0.32–1.1 L/ha

0.25–2 L/ha

0.14–0.5 kg/ha

0.25–2 L/ha

0.13–0.44 L/ac

0.1–0.8 L/ac

For annual grass, use 0.32 L/ha. Apply at the 1–6 leaf stage.

For volunteer grains, use 0.47 L/ha.

Grasses emerging after application will not be controlled.

Use 100–200 L water/ha (40–80 L water/ac).

Spray tips angled forward 45° will give better coverage.

Do NOT use flood jet or hollow cone nozzles.

Do NOT apply if rain is expected within 1 hour after application.

Do NOT apply closer than 30 days to harvest.

Postemergence Broadleaf Herbicides

AIM EC (240 g/L)

+ AGRAL 90

or AG-SURF

or MERGE

carfentrazone-ethyl

+ non-ionic surfactant

or surfactant/solvent

36.5–117 mL/ha

2.5 L/1,000 L

1 L/1,000 L

8.8–28.1 g/ha

0.25% v/v

0.1% v/v

14.6–46.8 mL/ac

2.5 L/1,000 L

1 L/1,000 L

Apply POST with a hooded sprayer between the rows.

Apply to actively growing weeds up to 10 cm tall.

Apply in a minimum of 100 L/ha (40 L/ac) water.

Do NOT apply closer than 1 day to harvest.

Apply ONLY once per growing season.

Potatoes

Site Preparation Before Planting – See Chapter 6, Preplant Weed Control, page 90.

The best weed management system for potato uses a combination of chemical weed control with cultivation and other techniques. Cultivation prior to potato emergence using various kinds of cultivation equipment (light harrows, finger weeders, hillers, etc.) will control the early flush of weeds. Root pruning of the crop should be minimized. If the crop is hilled after application of herbicides, untreated soil will surface and another flush of weeds may result.

POTATO VINE KILLING – For information on products and rates of application of vine killing, consult OMAFRA Publication 838, Vegetable Crop Protection Guide, and follow the product label.

Soil Applied Grass Herbicides

DUAL II MAGNUM (915 g/L)

s-metolachlor/benoxacor

1.25–1.75 L/ha

1.14–1.6 kg/ha

0.5–0.7 L/ac

PRE or PPI (for nutsedge control).

Do NOT use on the variety Superior.

Do NOT apply on sandy or coarse textured soils low in organic matter.

Do NOT apply at ground crack or if potatoes have emerged.

EPTAM (800 g/L)

EPTC

4.25–8.5 L/ha

3.4–6.8 kg/ha

1.7–3.4 L/ac

PPI – Apply to a dry soil surface before planting and incorporate immediately, at next to the last or last cultivation for grass escapes. Use at 1.7–2.2 L/ac.

Avoid wet soil conditions or weed control may be poor.

Use 2.2–3.4 L/ac rates for heavy weed infestations and nutsedge control.

Soil Applied Broadleaf Herbicides

LOROX DF (50 DF)

or LOROX L (480 g/L)

linuron

2.2–4.3 kg/ha or L/ha

1.1–2.15 kg/ha or L/ha

0.88–1.72 kg/ac or L/ac

PRE – Apply immediately after hilling but the potato tops must be covered with soil to avoid injury.

Use the lower rate on light sandy soils and the higher rate on muck or clay soils.

Apply before grasses are 5 cm tall and before broadleaf weeds are 15 cm tall.

Soil Applied Grass and Broadleaf Herbicides

CHATEAU WDG (51.1%)

flumioxazin

0.105 kg/ha

0.054 kg/ha

0.042 kg/ac

Do NOT apply after cracking.

Apply ONCE per season after hilling for the preemergence suppression of labeled weeds.

A minimum of 5 cm of soil must cover the vegetative portion of the potato plant at the time of application. Application to potatoes with less than 5 cm soil coverage may result in crop injury.

Apply to all coarse and medium textured soils with less than 5% organic matter.

Apply using ground application ONLY.

Do NOT apply through irrigation equipment.

Crop Injury may occur if applied at hilling.

After use, tanks and nozzles must be cleaned with a 3% ammonia solution. Please review label for more detailed instructions.

SENCOR 480 F (480 g/L)

metribuzin

0.85–2.25 L/ha

0.4–1.1 kg/ha

0.34–0.9 L/ac

PRE – Apply after hilling before emergence of crop or weeds, or POST before weeds are 4 cm tall.

Use the lower rate on sandy soil.

Apply higher rates to longer season potatoes, or when longer weed control is needed.

Apply in 100–300 L/ha water.

Do NOT use on muck soils.

Do NOT use on coarse soils that have less than 2% organic matter.

Do NOT use on Belleisle, Tobique, or red skinned varieties.

Do NOT exceed a total application rate of 1.1 kg active/ha per year.

Do NOT harvest for 60 days after application.

SENCOR 75 DF (75 WG)

+ LOROX L (480 g/L)

metribuzin

+ linuron

0.56–1.1 kg/ha

1.6–3.75 L/ha

0.42–0.825 kg/ha

0.768–1.8 kg/ha

0.23–0.44 kg/ac

0.64–1.5 L/ac

PRE – Apply after hilling and before emergence of the crop, or POST before weeds are 4 cm tall.

Use the lower rate on sandy soils.

Use the higher rate on late potatoes for season long control.

Do NOT use on muck soils.

Do NOT use on Belleisle, Tobique, or red skinned varieties.

Do NOT harvest within 60 days of application.

Soil Applied Tank-Mix Options

DUAL II MAGNUM (915 g/L)

+ LOROX DF (50 DF)

or LOROX L (480 g/L)

s-metolachlor/benoxacor

+ linuron

1.25–1.75 L/ha

1.75–2.25 kg/ha or L/ha

1.14–1.6 kg/ha

0.88–1.13 kg/ha or L/ha

0.5–0.7 L/ac

0.7–0.9 kg/ac or L/ac

PRE – Apply after first hilling before emergence of the crop and weeds.

See Precautions for DUAL II MAGNUM and for LOROX above.

Do NOT use on the variety Superior.

DUAL II MAGNUM (915 g/L)

+ SENCOR 480 F (480 g/L)

s-metolachlor/benoxacor

+ metribuzin

1.25–1.75 L/ha

1.1–2.25 L/ha

1.14–1.6 kg/ha

0.53–1.08 kg/ha

0.5–0.7 L/ac

0.44–0.9 L/ac

PPI or PRE – Apply after the first hilling before emergence of the crop and weeds.

See Precautions for DUAL II MAGNUM above.

Do NOT use on Superior, Belleisle, or Tobique potatoes.

Do NOT apply on sandy or on coarse textured soils low in organic matter, or on muck soils.

Do NOT apply at ground crack or if potatoes have emerged.

EPTAM (800 g/L)

+ SENCOR 480 F (480 g/L)

EPTC

+ metribuzin

4.25–5.5 L/ha

1.1–1.75 L/ha

3.4–4.4 kg/ha

0.53–0.84 kg/ha

1.7–2.2 L/ac

0.44–0.7 L/ac

PPI – Apply as a tank-mix in 220–330 L/ha (88–132 L/ac) water and incorporate immediately.

Do NOT use on muck soils.

Do NOT use on Belleisle or Tobique varieties.

Do NOT apply more than two times a year.

Do NOT use on Atlantic, Eramosa, Shepardy, red skinned, or early maturing varieties.

Non-Selective Herbicides and Tank-Mix Options

GRAMOXONE (200 g/L)

paraquat

2.75–4.25 L/ha

0.55–0.85 kg/ha

1.1–1.7 L/ac

Apply in 300–550 L/ha (120–220 L/ac) water to emerged weeds.

Use on Netted Gem and Cherokee varieties before emergence. Apply on other varieties until 25–30% of the crop has emerged but none of the tops should be over 5–8 cm in height. Temporary yellowing on the tops will occur.

Do NOT use on emerged potato plants in the evening, under cloudy conditions or when the plants are under moisture stress.

IGNITE (150 g/L)

glufosinate ammonium

2.7–5 L/ha

0.405–0.75 kg/ha

1.08–2 L/ac

Apply in 110–330 L/ha (44–132 L/ac) of water at no later than ground crack of the crop.

Only emerged weeds will be controlled.

IGNITE (150 g/L)

+ SENCOR 480 F (480 g/L)

glufosinate ammonium

+ metribuzin

2.7–5 L/ha

1.1 L/ha

0.405–0.75 kg/ha

0.55 kg/ha

1.08–2 L/ac

0.44 L/ac

POST – Apply in 110–330 L/ha (44–132 L/ac) of water at no later than ground crack of the crop.

Only emerged weeds will be controlled.

Do NOT use SENCOR on muck soils or on Belleisle or Tobique varieties.

Postemergence Grass Herbicides

EXCEL SUPER (80.5 g/L)

fenoxaprop-p-ethyl

0.67 L/ha

0.054 kg/ha

0.27 L/ac

Apply when majority of annual grasses are in the 1–6 leaf stage or until volunteer corn is up to 25 cm tall.

Do NOT apply if rainfall is expected within 1 hour after application.

Grasses emerging after application will not be controlled.

Preharvest interval is 35 days.

POAST ULTRA (450 g/L)

+ MERGE

sethoxydim

surfactant/solvent

0.32–1.1 L/ha

0.25–2 L/ha

0.14–0.5 kg/ha

0.25–2 L/ha

0.13–0.44 L/ac

0.1–0.8 L/ac

For annual grass, use 0.32 L/ha. Apply at the 1–6 leaf stage.

For volunteer grains, use 0.47 L/ha.

Use 100–200 L water/ha (40–80 L water/ac).

Do NOT apply if rain is expected within 1 hour after application.

Do NOT apply closer than 80 days to harvest.

SELECT (240 g/L)

+ AMIGO

or ARROW (240 g/L)

clethodim

+ surfactant

0.125–0.38 L/ha

5–10 L/1,000 L water

0.03–0.09 kg/ha

0.5–1% v/v

0.05–0.15 L/ac

5–10 L/1,000 L water

Potatoes are tolerant at any growth stage.

For annual grasses and volunteer cereals, apply at the 2–6 leaf stage.

For quackgrass, apply at the 2–5 leaf stage at the higher rate.

Do NOT harvest for 60 days after application.

VENTURE L (125 g/L)

fluazifop-p-butyl

0.6–2 L/ha

0.075–0.25 kg/ha

0.24–0.8 L/ac

Apply POST to actively growing grasses before tillering.

Apply at 0.6 L/ha (0.24 L/ac) at 2–5 leaf stage of volunteer corn.

Apply at 0.8 L/ha (0.32 L/ac) at 2–5 leaf stage of volunteer wheat and barley.

Apply at 1 L/ha (0.4 L/ac) at 2–5 leaf stage of annual grasses (2–4 leaf for foxtails).

Apply at 2 L/ha (0.8 L/ac) at 3–5 leaf stage of quackgrass and wirestem muhly.

Apply in a maximum volume of 300 L/ha (120 L/ac).

Thorough preplant tillage, fragmenting quackgrass rhizomes improves control.

Do NOT cultivate between rows until 5 days after application.

Do NOT apply closer than 90 days to harvest.

May be tank-mixed with SENCOR.

Postemergence Broadleaf Herbicides

AIM EC (240 g/L)

+ AGRAL 90

or AG-SURF

or MERGE

carfentrazone-ethyl

+ non-ionic surfactant

or surfactant/solvent

36.5–117 mL/ha

2.5 L/1,000 L

1 L/1,000 L

8.8–28.1 g/ha

0.25% v/v

0.1% v/v

14.8–46.8 mL/ac

2.5 L/1,000 L

1 L/1,000 L

Apply POST with a hooded sprayer between the rows.

Apply to actively growing weeds up to 10 cm tall.

Apply in a minimum of 100 L/ha (40 L/ac) water.

Do NOT apply closer than 7 days to harvest.

Apply ONLY once per growing season.

Postemergence Grass and Broadleaf Herbicides

PRISM (25 DF)

or PRISM (25 SG)

+ AGRAL 90

or AG-SURF

rimsulfuron

+ non-ionic surfactant

60 g/ha

2 L/1,000 L water

15 g/ha

0.2% v/v

24 g/ac

2 L/1,000 L water

Apply when quackgrass is at 3–6 leaf stage (less than 10 cm tall), annual grasses are at 1–6 leaf stage and redroot pigweed is in the 4–6 leaf stage.

Apply before potatoes initiate flowering.

Always add water soluble packages to clean water with the agitator running.

Apply in a minimum 100 L/ha of water.

Do NOT cultivate within 7–10 days before and after applying PRISM.

Do NOT apply within 30 days of harvest.

SENCOR 480 F (480 g/L)

metribuzin

0.85–2.25 L/ha

0.4–1.1 kg/ha

0.34–0.9 L/ac

Apply soon after potatoes emerge and before weeds are 4 cm high.

Apply in the afternoon or early evening on sunny days.

Do NOT use on red skinned varieties.

Do NOT use on Shepody or Atlantic potatoes.

Do NOT harvest within 60 days of application.

Do NOT use on muck soil to avoid injury on subsequent crops.

Preharvest

AIM EC (240 g/L)

+ non-ionic surfactant

or MERGE

carfentrazone-ethyl

+ non-ionic surfactant

or MERGE

73–350 mL/ha

2.5 L/1,000 L

10 L/1,000 L

17.5–84 g/ha

0.25% v/v

0.1% v/v

30–140 mL/ac

2.5 L/1,000 L

10 L/1,000 L

Coverage of weed and crop foliage is essential for control.

Apply at a minimum water volume of 100 L/ha (40 L/ac).

Pre Harvest Interval (PHI) is 7 days.

If a second burndown application is required, use REGLONE DESSICANT at the rates listed below.

REGLONE DESICCANT (240 g/L)

diquat

1.25–3.5 L/ha

0.3–0.84 kg/ha

0.5–1.4 L/ac

Use 1.25–3.5 L/ha by ground and 1.7–2.3 L/ha for aerial applications.

Use a minimum of 550 L/ha of spray volume.

Use the higher rate for heavy canopy of crop and weeds.

A second application may be necessary 4–6 days after first application within the normal top killing time.

Do NOT harvest for at least 14 days after application.

Do NOT apply to drought stressed potatoes or if soil is water logged.

Do NOT apply if rain is expected within 15 minutes after application.

Refer to label for specific environmental precautions.

Rutabagas

Site Preparation Before Planting – See Chapter 6, Preplant Weed Control, page 90.

Soil Applied Grass Herbicides

DUAL II MAGNUM (915 g/L)

s-metolachlor/benoxacor

1.25–1.75 L/ha

1.14–1.6 kg/ha

0.5–0.7 L/ac

Apply PPI or PRE. PPI gives optimal control of yellow nutsedge; PRE gives optimal control of eastern black nightshade.

Do NOT use on muck, peat and high organic matter soils.

Do NOT use on soils with less than 1% organic matter.

Use the higher rate for heavier weed populations.

Apply by ground application equipment only.

TREFLAN EC (480 g/L)

or RIVAL EC (500 g/L)

or BONANZA 480 (480 g/L)

trifluralin

1.2–2.4 L/ha

1.2–2.3 L/ha

1.7–2.3 L/ha

0.6–1.155 kg/ha

0.48–0.96 L/ac

0.48–0.92 L/ac

0.8–1.1 L/ac

Apply PPI. Incorporate within 24 hours of application.

Do NOT apply to peat or muck soils (greater than 15% organic matter).

Do NOT apply to soils with less than 2% organic matter.

Do NOT apply to fields spread with manure within the last 12 months.

Do NOT apply by air.

Do NOT apply on the same land for 2 consecutive years.

Soil Applied Grass and Broadleaf Herbicides

DEVRINOL DF (50 DF)

napropamide

2.2–4.4 kg/ha

1.1–2.2 kg/ha

0.9–1.8 kg/ac

PPI – Incorporate within 24 hours of application.

Use the lower rate on sandy soils.

Do NOT apply to soils with over 10% organic matter.

Damage to subsequent cover crops can be reduced by tillage across the rows after harvest.

Shepherd’s purse and lady’s thumb may escape treatment at this rate.

Preharvest interval is 60 days.

Postemergence Grass Herbicides

ASSURE II (96 g/L)

+ SURE-MIX

quizalofop-p-ethyl

+ oil concentrate

0.38–0.75 L/ha

5 L/1,000 L

0.036–0.07 kg/ha

0.5% v/v

0.15–0.3 L/ac

5 L/1,000 L

Apply to emerged annual grasses and volunteer cereals in the 2 leaf to tillering stage, and volunteer corn and quackgrass in the 2–6 leaf stage.

Use the 0.38 L/ha (0.15 L/ac) rate for control of volunteer corn, volunteer cereals and green foxtail.

The 0.5 L/ha (0.2 L/ac) rate will suppress quackgrass and also control barnyard grass.

Use the 0.75 L/ha (0.3 L/ac) rate for control of quackgrass.

Do NOT harvest within 30 days of application.

VENTURE L (125 g/L)

fluazifop-p-butyl

0.6–2 L/ha

0.075–0.25 kg/ha

0.24–0.8 L/ac

Apply POST to actively growing grasses before tillering.

Apply at 0.6 L/ha (0.24 L/ac) at 2–5 leaf stage of volunteer corn.

Apply at 0.8 L/ha (0.32 L/ac) at 2–5 leaf stage of volunteer wheat and barley.

Apply at 1 L/ha (0.4 L/ac) at 2–5 leaf stage of annual grasses (2–4 leaf for foxtails).

Apply at 2 L/ha (0.8 L/ac) at 3–5 leaf stage of quackgrass and wirestem muhly. Thorough preplant tillage will ensure more uniform emergence. Cultivate 7 days after treatment in wide row crops.

Apply in a maximum volume of 300 L/ha (120 L/ac).

Apply ONLY once per season.

Do NOT apply other herbicides within 3 days of application.

Do NOT apply if rain is expected within 2 hours after application.

Preharvest interval is 45 days.

Postemergent Broadleaf Herbicides

AIM EC (240 g/L)

+ AGRAL 90

or AG-SURF

or MERGE

carfentrazone-ethyl

+ non-ionic surfactant

or surfactant/solvent

36.5–117 mL/ha

2.5 L/1,000 L

1 L/1,000 L

8.8–28.1 g/ha

0.25% v/v

0.1% v/v

14.6–46.8 mL/ac

2.5 L/1,000 L

1 L/1,000 L

Apply POST with a hooded sprayer between the rows.

Apply to actively growing weeds up to 10 cm tall.

Apply in a minimum of 100 L/ha (40 L/ac) water.

Do NOT apply closer than 1 day to harvest.

Apply ONLY once per growing season.

LONTREL 360 (360 g/L)

clopyralid

0.56 L/ha

0.2 kg/ha

0.22 L/ac

Apply POST when ragweed is 5–10 cm tall.

Make ONLY 1 application per year in 200–300 L/ha water.

Do NOT apply by air.

Do NOT apply if rain is expected within 4 hours after application.

Preharvest interval is 83 days.

Specialty Vegetables: Chinese Broccoli, Radish and Cabbage, Kohlrabi, Mustard Cabbage, Fuzzy Squash, Snow Peas

Site Preparation Before Planting – See Chapter 6, Preplant Weed Control, page 90.

Soil Applied Grass and Broadleaf Herbicides

DEVRINOL DF (50 DF)

napropamide

2.25–4.5 kg/ha

1.12–2.25 kg/ha

0.9–1.8 kg/ac

PRE or PREPLANT – For use ONLY on seeded Chinese broccoli, mustard, cabbage, Chinese radish, Chinese mustard cabbage, Chinese cabbage, transplanted Chinese cabbage and kohlrabi.

Use the lower rate on light soils (coarse textured to sandy and sandy loam).

ONLY 1 application per year. Ground application ONLY.

Do NOT apply closer than 60 days to harvest.

After harvest, soil should be worked (across rows if banded) to prevent injury to succeeding crops.

Small grains seeded in the fall may be stunted but not otherwise affected.

DEVRINOL DF (50 DF)

napropamide

3 kg/ha

1.5 kg/ha

1.2 kg/ac

PPI – For use on fuzzy squash transplants ONLY.

Requires rainfall or sufficient irrigation to wet the soil to a depth of 5–10 cm soon after application.

Some crop stunting may be observed but this should not affect yield.

DUAL II MAGNUM (915 g/L)

s-metolachlor/benoxacor

1.2–1.5 L/ha

1.098–1.373 kg/ha

0.48–0.6 L/ha

Apply to mustard green transplants ONLY.

Apply PRE or POST (weeds at the 2 leaf stage or less).

Apply ONLY once per year by ground application in a minimum of 150–300 L/ha water.

Do NOT harvest for 30 days after application.

Yield losses may occur when applied to transplanted mustard greens.

Control may be reduced in areas of high weed density.

PURSUIT (240 g/L)

imazethapyr

0.312 L/ha

0.075 kg/ha

0.125 L/ac

PRE and PPI – For use on snow peas ONLY.

Apply ONLY once per year in 100–400 L/ha (40–160 L/ac).

Do NOT apply closer than 60 days to harvest.

Postemergence Grass Herbicides

POAST ULTRA (450 g/L)

+ MERGE

sethoxydim

+ surfactant/solvent

0.32–1.1 L/ha

0.25–2 L/ha

0.14–0.5 kg/ha

0.25–2 L/ha

0.13–0.44 L/ac

0.1–0.8 L/ac

For use ONLY on Chinese broccoli, Chinese cabbage, kohlrabi, mustard cabbage and Chinese radish and snow peas.

Apply using 100–200 L/ha (40–80 L/ac) water volume.

For annual grass, use 0.32 L/ha. Apply at the 1–6 leaf stage.

For volunteer grains, use 0.47 L/ha.

Use the 0.32 L/ha rate ONLY for snow peas.

Do NOT apply if rain is expected within 1 hour after application.

Do NOT apply closer than 30 days to harvest.

Postemergent Broadleaf Herbicides

AIM EC (240 g/L)

+ AGRAL 90

or AG-SURF

or MERGE

carfentrazone-ethyl

+ non-ionic surfactant

or surfactant/solvent

36.5–117 mL/ha

2.5 L/1,000 L

1 L/1,000 L

8.8–28.1 g/ha

0.25% v/v

0.1% v/v

14.6–46.8 mL/ac

2.5 L/1,000 L

1 L/1,000 L

Apply POST with a hooded sprayer between the rows.

Apply to actively growing weeds up to 10 cm tall.

Apply in a minimum of 100 L/ha (40 L/ac) water.

Do NOT apply closer than 1 day to harvest.

Apply ONLY once per growing season.

BASAGRAN (480 g/L)

+ ASSIST

bentazon

+ oil concentrate

1.75 L/ha

1–2 L/ha

0.84 kg/ha

1–2 L/ha

0.7 L/ac

0.4–0.8 L/ac

For snow peas ONLY.

Apply after the crop is at the 3 leaf stage when weeds are small and actively growing.

Use ONLY 1 application per year.

Apply in 300 L water/ha.

Do NOT apply closer than 30 days to harvest.

LONTREL 360 (360 g/L)

clopyralid

0.56 L/ha

0.20 kg/ha

0.2 L/ac

For use ONLY on nappa cabbage, Chinese radish, mustard cabbage, and Chinese broccoli.

Treat when weeds are young and actively growing.

Apply post planting as a ground application in 300 L water/ha.

Use ONLY 1 application per year.

Do NOT apply closer than 30 days to harvest.

Will not control weeds that emerge after treatment.

Spinach

Site Preparation Before Planting – See Chapter 6, Preplant Weed Control, page 90.

Postemergence Grass Herbicides

POAST ULTRA (450 g/L)

+ MERGE

sethoxydim

+ surfactant/solvent

0.32–1.1 L/ha

0.25–2 L/ha

0.14–0.5 kg/ha

0.25–2 L/ha

0.13–0.44 L/ac

0.1–0.8 L/ac

Apply to actively growing grasses. One application per year.

For annual grass, use 0.32 L/ha. Apply at the 1–6 leaf stage (2–5 is optimum).

For volunteer grains, use 0.47 L/ha. Apply at the 1–6 leaf stage (2–5 is optimum).

Grasses emerging after application will not be controlled.

Use 100–200 L water/ha (40–80 L water/ac).

Spray tips angled forward 45° will give better coverage.

Do NOT use flood jet or hollow cone nozzles.

Do NOT apply if rain is expected within 1 hour after application.

Preharvest interval is 15 days.

SELECT (240 g/L)

+ AMIGO

clethodim

+ surfactant

0.125–0.19 L/ha

5 L/1,000 L

0.03–0.046 L/ha

0.5% v/v

0.05–0.08 L/ac

Apply using ground equipment.

Apply when grassy weeds are in the 2–6 leaf stage.

Do NOT exceed two applications per year.

Allow for 14 days between applications.

Do NOT harvest for 14 days after application.

See label for detailed information on rates to control all annual grasses.

Postemergence Broadleaf Herbicides

AIM EC (240 g/L)

+ AGRAL 90

or AG-SURF

or MERGE

carfentrazone-ethyl

+ non-ionic surfactant

or surfactant/solvent

36.5–117 mL/ha

2.5 L/1,000 L

1 L/1,000 L

8.8–28.1 g/ha

0.25% v/v

0.1% v/v

14.6–46.8 mL/ac

2.5 L/1,000 L

1 L/1,000 L

Apply POST with a hooded sprayer between the rows.

Apply to actively growing weeds up to 10 cm tall.

Apply in a minimum of 100 L/ha (40 L/ac) water.

Do NOT apply closer than 1 day to harvest.

Apply ONLY once per growing season.

Sugar Beets (Processing)

Caution about Herbicide Residues – Sugar beets are one of the most sensitive crops to herbicide residues from the previous year’s crop. They are particularly sensitive to residues from many of the Group 2 herbicides, including PURSUIT, BROADSTRIKE, CLASSIC and PEAK. Low soil pH (below 6.0) or high soil pH (above 7.5) can be a factor to delay the breakdown of these herbicides, increasing crop injury in rotational crops. Please see Table 4-4. Herbicide Crop Rotation and Soil pH Restrictions – Field Crops, page 70, as well as product labels and your herbicide and sugar company representatives for more details on your situation.

Site Preparation Before Planting – See Chapter 6, Preplant Weed Control, page 90.

Soil Applied Broadleaf Herbicides

PYRAMIN FL (430 g/L)

pyrazon

8.25–10.25 L/ha

3.55–4.41 kg/ha

3.3–4.1 L/ac

Apply PPI or PRE.

Do NOT incorporate more than 5 cm deep.

Do NOT apply to soils with less than 3% organic matter.

Soil Applied Grass and Broadleaf Herbicides

NORTRON SC (480 g/L)

ethofumesate

3.2–8.25 L/ha

1.54–3.96 kg/ha

1.28–3.3 L/ac

Apply PPI or PRE as a ground application no more than ONCE per season, in 110–560 L/ha water. Do NOT incorporate more than 5 cm deep.

Use ONLY on mineral soils.

Use the lower rate on soils with less than 3% organic matter.

Do NOT rotate to other crops for 12 months.

Soil Applied Tank-Mix Option

PYRAMIN FL (430 g/L)

+ NORTRON SC (480 g/L)

pyrazon

+ ethofumesate

5.25 L/ha

3.65 L/ha

2.26 kg/ha

1.75 kg/ha

2.1 L/ac

1.46 L/ac

PRE – Apply ONLY once per year through ground application in 110–560 L/ha water.

Do NOT apply to soil with less than 3% organic matter. Do NOT use on sandy soils.

Use ONLY on mineral soils.

Do NOT rotate to crops other than sugar beets for 12 months.

Postemergence Grass Herbicides

ASSURE II (96 g/L)

+ SURE-MIX

quizalofop-p-ethyl

+ oil concentrate

0.38–0.75 L/ha

5 L/1,000 L water

0.036–0.072 kg/ha

0.5% v/v

0.15–0.30 L/ac

5 L/1,000 L water

Apply POST when annual grasses and volunteer cereals are in the 2 leaf to tillering stage and volunteer corn and quackgrass are in the 2–6 leaf stages.

Apply before the crop canopy closes to maximize spray coverage.

Use the 0.38 L/ha (0.15 L/ac) rate for annual grasses and volunteer cereals.

Use the 0.75 L/ha (0.30 L/ac) rate for quackgrass.

Use a second application of 0.38 L/ha (0.15 L/ac) to control late emerging weeds.

Do NOT exceed an accumulative seasonal use rate of 0.75 L/ha (0.30 L/ac).

Do NOT use flood jet nozzles.

Do NOT apply if rain is expected within 1 hour after application.

Preharvest interval is 80 days.

DUAL II MAGNUM (915 g/L)

s-metolachlor/benoxacor

1.25–1.75 L/ha

1.14–1.6 kg/ha

0.5–0.7 L/ac

Apply postemergent to sugarbeets between cotyledon to the 4 leaf stage and before weed emergence.

Do NOT apply more than 1 application per season.

Preharvest interval is 120 days.

Do NOT feed sugar beet tops to livestock.

Apply by ground equipment ONLY.

POAST ULTRA (450 g/L)

+ MERGE

sethoxydim

+ surfactant/solvent

0.32–1.1 L/ha

0.25–2 L/ha

0.14–0.5 kg/ha

0.25–2 L/ha

0.13–0.44 L/ac

0.1–0.8 L/ac

For annual grass, use 0.32 L/ha. Apply at the 1–6 leaf stage (2–5 is optimum).

For volunteer grains, use 0.47 L/ha. Apply at the 1–6 leaf stage (2–5 is optimum).

Use 100–200 L water/ha (40–80 L water/ac).

Grasses emerging after application will not be controlled.

Do NOT graze treated crop.

Spray tips angled forward 45° will give better coverage.

Do NOT use flood jet or hollow cone nozzles.

Do NOT apply if rain is expected within 1 hour after application.

Do NOT apply herbicides other than LONTREL 360 within 4 days of application.

Do NOT apply if rain is expected within 1 hour after application.

Preharvest interval is 85 days.

Postemergence Broadleaf Herbicides

AIM EC (240 g/L)

+ AGRAL 90

or AG-SURF

or MERGE

carfentrazone-ethyl

+ non-ionic surfactant

or surfactant/solvent

36.5–117 mL/ha

2.5 L/1,000 L

1 L/1,000 L

8.8–28.1 g/ha

0.25% v/v

0.1% v/v

14.6–46.8 mL/ac

2.5 L/1,000 L

1 L/1,000 L

Apply POST with a hooded sprayer between the rows.

Apply to actively growing weeds up to 10 cm tall.

Apply in a minimum of 100 L/ha (40 L/ac) water.

Do NOT apply closer than 1 day to harvest.

Apply ONLY once per growing season.

BETAMIX β EC ((1:1)153 g/L)

desmedipham/phenmedipham

Consult label and your processor for application rates.

Apply POST when sugar beets have at least 2 true leaves.

Apply before the weeds have 4 true leaves (before 2 true leaves is optimum).

Wait a minimum of 7 days before making a second full rate application.

Consult label for split (reduced rate) applications.

Do NOT spray in excess of 16.5 L/ha of BETAMIX per year.

Do NOT spray under extreme temperature or drought conditions.

Do NOT spray if dew is present.

Yellowing of the crop may occur, but sugar beets will recover.

Do NOT spray if rainfall is expected within 6 hours.

Preharvest interval is 60 days.

LONTREL 360 (360 g/L)

clopyralid

Consult label and your processor for application rates.

Apply POST when sugar beets are in the cotyledon to 8 leaf stage.

Preharvest interval is 90 days.

PYRAMIN FL (430 g/L)

+ CITOWETT PLUS

pyrazon

+ surfactant

8.25 L/ha

2.5 L/1,000 L

3.55 kg/ha

0.25% v/v

3.3 L/ac

2.5 L/1,000 L

Apply POST when first true leaf of sugar beets is at least 2.5 cm long.

Do NOT apply when beets are in the cotyledon stage.

Apply before the weeds have 3 true leaves.

Do NOT use on soils with less than 3% organic matter.

Avoid hot temperatures.

Apply using a minimum of 300 L/ha of water.

Do NOT use any other oils or surfactants.

UPBEET (50 DF)

+ AGRAL 90

or AG-SURF

or CITOWETT PLUS

or SURE-MIX

triflusulfuron-methyl

+ non-ionic surfactant

or + adjuvant

35–70 g/ha

2.5 L/1,000 L water

17.5–35 g/ha

0.25% v/v

14–28 g/ac

2.5 L/1,000 L water

Apply POST when sugar beets are actively growing.

Yellowing of the crop may occur, but sugar beets will recover.

Make 2 applications 5–10 days apart when velvetleaf has fewer than 2 leaves.

Use the higher rate for larger weeds and heavy weed populations.

Do NOT use more than 100 g/ha (40 g/ac) in a season.

Do NOT apply under extreme temperatures or drought conditions.

Do NOT spray if rainfall is expected within 6 hours.

Preharvest interval is 60 days.

Postemergence Tank-Mix Option

UPBEET (50 DF)

BETAMIX ((1:1)150 g/L)

triflusulfuron-methyl

+ desmedipham/
phenmedipham

Consult label and your processor for application rates.

Apply POST when sugar beets are actively growing.

Yellowing of the crop may occur, but sugar beets will recover.

Make 2 applications 5–10 days apart, or as weeds emerge, to weeds with fewer than 4 true leaves. Best control is obtained if weeds have less than 2 leaves.

Use the higher rate for larger weeds and heavy weed populations.

If velvetleaf is the predominant weed, use of UPBEET alone with an adjuvant is preferable.

Do NOT use an adjuvant with this tank-mix.

Do NOT use more than 100 g/ha (40 g/ac) in a season.

Do NOT apply under extreme temperature or drought conditions.

Do NOT spray if dew is present.

Do NOT spray if rainfall is expected within 6 hours.

Preharvest interval is 60 days.

Glyphosate Tolerant ("Roundup Ready") Varieties Only

ROUNDUP ULTRA2 (540 g/L)

or ROUNDUP WEATHERMAX (540 g/L)

glyphsosate

0.83–1.67 L/ha

0.45–0.9 kg/ha

0.332–0.67 L/ac

Use ONLY on pedigreed (certified) sugarbeet seed designated as glyphosate tolerant (i.e. "Roundup Ready").

Apply to emerged weeds up to 15 cm in height.

A maximum of 4 applications may be applied to glyphosate tolerant sugarbeets in 1 season. Allow a minimum of 10 days between applications.

Do NOT harvest sugarbeets within 30 days of the final glyphosate application.

Sweet Potatoes

Site Preparation Before Planting – See Chapter 6, Preplant Weed Control, page 90.

Soil applied Grass and Broadleaf Herbicides

COMMAND 360 ME (360 g/L)

clomazone

1.55 L/ha

0.558 kg/ha

0.62 L/ac

Apply as a single application post transplant surface applied to the crop and prior to weed emergence.

Do NOT incorporate.

Apply in a minimum of 95 L/ha (38 L/ac) of water.

Do NOT apply closer than 95 days to harvest.

DACTHAL W-75 (75 WP)

chlorthal dimethyl

9–18 kg/ka

6.75–13.5 kg/ha

3.6–7.2 kg/ac

PRE.

Apply at a rate of 9–13.5 kg/ha (3.6–5.4 kg/ac) on light sand or sandy loam soils.

Apply at a rate of 11–15.5 kg/ha (4.4–6.2 kg/ac) on medium silt loam soils.

Apply at a rate of 18 kg/ha (7.2 kg/ac) on heavy clay soils.

Do NOT use on muck soils.

Apply in at least 225 L/ha (90 L/ac) of water.

Apply directly over transplants, preemergence to weeds.

If weeds have emerged, cleanly cultivate the soil before application.

Rainfall or irrigation (about 1 cm) is necessary for activation.

Postemergence Broadleaf Herbicides

AIM EC (240 g/L)

+ AGRAL 90

or AG-SURF

or MERGE

carfentrazone-ethyl

+ non-ionic surfactant

or surfactant/solvent

36.5–117 mL/ha

2.5 L/1,000 L

1 L/1,000 L

8.8–28.1 g/ha

0.25% v/v

0.1% v/v

14.6–46.8 mL/ac

2.5 L/1,000 L

1 L/1,000 L

Apply POST with a hooded sprayer between the rows.

Apply to actively growing weeds up to 10 cm tall.

Apply in a minimum of 100 L/ha (40 L/ac) water.

Do NOT apply closer than 1 day to harvest.

Apply ONLY once per growing season.

Postemergence Grass and Broadleaf Herbicides

POAST ULTRA (450 g/L)

+ MERGE

sethoxydim

+ surfactant/solvent

0.32–1.1 L/ha

0.25–2.0 L/ha

0.14–0.5 kg/ha

0.25–2 L/ha

0.13–0.44 L/ac

0.1–0.8 L/ac

Apply using 100–200 L/ha (40–80 L/ac) water volume.

For annual grass, use 0.32 L/ha. Apply at the 1–6 leaf stage.

For volunteer grains, use 0.47 L/ha.

Do NOT apply if rain is expected within 1 hour after application.

Do NOT apply closer than 30 days to harvest.

Tomatoes (Transplanted)

Weed control in tomatoes usually consists of a combination of herbicide weed control and cultivation. Crop rotation is also beneficial in the control of weeds. Cultivation should be shallow to prevent bringing untreated soil to the surface, which may result in another flush of weeds. When tomatoes are grown on raised beds and beds are reshaped during the course of the season, it may be necessary or useful to apply another herbicide treatment to areas between the rows to prevent a new weed infestation from interfering with harvesting. Do not exceed the total recommended rate per season of any herbicide applied more than once per year. Band treatment of herbicides over the row will reduce the cost by one-half to two-thirds depending on the width of the band compared to the row spacing. Shallow inter-row cultivation will be required for weed control between the rows. Perennial weeds may be partially controlled by cultivation. Controlling perennial weeds in crops other than tomatoes when grown in rotation is the best approach to control. Perennials are easily spread with cultivators or tillage equipment. Till areas of perennial weeds last. Machinery sanitation is important when moving between fields.

Site Preparation Before Planting – See Chapter 6, Preplant Weed Control, page 90.

Apply all treatments in 150–300 L/ha (60–120 L/ac) water unless otherwise specified.

Soil Applied Grass Herbicides

DUAL II MAGNUM (915 g/L)

s-metolachlor/benoxacor

1.25–1.75 L/ha

1.14–1.6 kg/ha

0.5–0.7 L/ac

Use ONLY on transplant tomatoes grown for processing.

Apply PPI. Incorporate shallowly to maintain spatial separation between herbicide treated zone and developing tomato roots.

Do NOT use on muck, peat, high organic matter soils.

Do NOT use on soils with less than 1% organic matter.

Use the higher rate for heavier weed populations, eastern black nightshade and yellow nutsedge.

TREFLAN EC (480 g/L)

or RIVAL EC (500 g/L)

or BONANZA 480 (480 g/L)

trifluralin

1.2–2.4 L/ha

1.2–2.3 L/ha

1.25–2.3 L/ha

0.6–1.15 kg/ha

0.48–0.96 L/ac

0.48–0.92 L/ac

0.5–0.92 L/ac

Use ONLY on transplant tomatoes grown for processing.

Apply PPI. Incorporate within 24 hours of application. Incorporate shallowly to maintain spatial separation between herbicide treated zone and developing transplant roots.

Cool, wet weather may delay transplant establishment but yield is not usually affected.

Do NOT apply to peat or muck soils (greater than 15% organic matter).

Do NOT apply to soils with less than 2% organic matter.

Do NOT apply to fields spread with manure within the last 12 months.

Do NOT apply by air.

Soil Applied Grass and Broadleaf Herbicides

DEVRINOL DF (50 DF)

napropamide

2.25–4.5 kg/ha

1.12–2.25 kg/ha

0.9–1.8 kg/ac

Apply PPI. Incorporate within 24 hours of application. Incorporate shallowly to maintain spatial separation between herbicide treated zone and developing transplant roots.

Registered for use on field seeded and transplanted tomatoes.

Use the lower rates on light textured soils.

Do NOT apply to soils with over 10% organic matter.

Damage to subsequent cover crops can be reduced by tillage across the rows after harvest. Small grains seeded in the fall may be stunted but not otherwise affected.

DUAL II MAGNUM (915 g/L)

SENCOR 480 F (480 g/L)

s-metolachlor/benoxacor

+ metribuzin

1.0–1.25 L/ha

0.5–1.0 L/ha

1.14–1.6 kg/ha

0.24–0.7 kg/ha

0.5–0.7 L/ac

0.2–0.56 L/ac

Use ONLY on transplant tomatoes grown for processing.

Apply PPI. Incorporate shallowly to maintain spatial separation between herbicide treated zone and developing transplant roots.

Do NOT use on muck, peat, or high organic matter soils.

Do NOT use on soils with less than 2% organic matter.

Use the higher rate of DUAL II MAGNUM for heavier weed populations, eastern black nightshade and yellow nutsedge.

Use lower rate of metribuzin and repeat applications of metribuzin when the crop is established as described under postemergence application of metribuzin.

Refer to the product labels regarding application rates for different soil types.

Do NOT exceed total maximum rate of metribuzin recommended for your soil type.

TREFLAN EC (480 g/L)

+ DUAL II MAGNUM (915 g/L)

+ SENCOR 500 F (500 g/L)

trifluralin

+ s-metolachlor/benoxacor

+ metribuzin

1.1–2.25 L/ha

1–1.25 L/ha

0.5–1 L/ha

0.53–1 kg/ha

0.92–1.14 kg/ha

0.25–0.5 kg/ha

0.44–0.9 L/ac

0.4–0.5 L/ac

0.2–0.4 L/ac

Use ONLY on transplant tomatoes grown for processing, ONCE per year.

Apply PPI. Incorporate within 24 hours of application. Incorporate shallowly to maintain spatial separation between herbicide treated zone and developing transplant roots.

Do NOT use on muck, peat or high organic matter soils (greater than 15% organic matter).

Use the lower rates on light textured soils.

Use lower rate of metribuzin and repeat applications of metribuzin when crop is established as described under postemergence application of metribuzin.

Do NOT exceed total maximum rate of metribuzin recommended for your soil type.

Cool, wet weather may delay establishment, but yield is not usually affected.

For eastern black nightshade, use the higher rate of DUAL II MAGNUM.

Preharvest interval is 60 days..

TREFLAN EC (480 g/L)

or RIVAL EC (500 g/L)

or BONANZA 480 (480 g/L)

+ SENCOR 480 F (480 g/L)

trifluralin

+ metribuzin

1.2–2.4 L/ha

1.2–2.3 L/ha

1.25–2.3 L/ha

0.5–1.4 L/ha

0.6–1.15 kg/ha

0.24–0.7 kg/ha

0.48–0.96 L/ac

0.48–0.92 L/ac

0.5–0.92 L/ac

0.2–0.56 L/ac

Use ONLY on transplant tomatoes grown for processing.

Apply PPI. Incorporate within 24 hours of application. Incorporate shallowly to maintain spatial separation between herbicide treated zone and developing transplant roots.

Do NOT apply to peat or muck soils (greater than 15% organic matter).

Do NOT apply to soils with less than 2% organic matter.

Do NOT apply to fields spread with manure within the last 12 months.

Use lower rates on sandy soils or soils with low organic matter.

Use lower rate of metribuzin and repeat applications of metribuzin when crop is established as described under postemergence application of metribuzin.

Do NOT exceed total maximum rate of metribuzin recommended for your soil type.

Cool, wet weather may delay establishment, but yield is not usually affected.

Postemergence Grass Herbicides

EXCEL SUPER (80.5 g/L)

fenoxaprop-p-ethyl

0.67 L/ha

0.054 kg/ha

0.27 L/ac

Apply POST when annual grasses are in the 1–6 leaf stage and volunteer corn is up to 25 cm tall.

Annual grasses emerging after application will not be controlled.

Do NOT apply other herbicides within 4 days of application.

Do NOT apply by air.

Do NOT use flood jet nozzles or controlled droplet application equipment.

Spray tips angled forward 45° will give better coverage.

Do NOT apply if rain is expected within 1 hour after application.

Preharvest interval is 55 days.

POAST ULTRA (450 g/L)

+ MERGE

sethoxydim

surfactant/solvent

0.32–1.1 L/ha

0.25–2 L/ha

0.14–0.5 kg/ha

0.25–2 L/ha

0.13–0.44 L/ac

0.1–0.8 L/ac

For annual grass, use 0.32 L/ha. Apply at the 1–6 leaf stage (2–5 is optimum).

For volunteer grains, use 0.47 L/ha. Apply at the 1–6 leaf stage (2–5 is optimum).

Use 100–200 L water/ha (40–80 L water/ac).

Grasses emerging after application will not be controlled.

Do NOT apply any other chemicals within 4 days of POAST ULTRA application.

Spray tips angled forward 45° will give better coverage.

Do NOT use flood jet or hollow cone nozzles.

Do NOT apply if rain is expected within 1 hour after application.

Preharvest interval is 60 days.

VENTURE L (125 g/L)

fluazifop-p-butyl

0.6–2 L/ha

0.075–0.25 kg/ha

0.24–0.8 L/ac

Apply POST to actively growing grasses before tillering.

Apply at 0.6 L/ha (0.24 L/ac) at 2–5 leaf stage of volunteer corn.

Apply at 0.8 L/ha (0.32 L/ac) at 2–5 leaf stage of volunteer wheat and barley.

Apply at 1 L/ha (0.4 L/ac) at 2–5 leaf stage of annual grasses (2–4 leaf for foxtails).

Apply at 2 L/ha (0.8 L/ac) at 3–5 leaf stage of quackgrass and wirestem muhly. Thorough preplant tillage, fragmenting quackgrass rhizomes improves control.

Apply in a maximum volume of 300 L/ha (120 L/ac).

Do NOT cultivate for 5 days after application.

Do NOT apply other herbicides within 3 days of application.

Do NOT apply if rain is expected within 2 hours after application.

Preharvest interval is 60 days.

Postemergent Broadleaf Herbicides

AIM EC (240 g/L)

+ AGRAL 90

or AG-SURF

or MERGE

carfentrazone-ethyl

+ non-ionic surfactant

or surfactant/solvent

36.5–117 mL/ha

2.5 L/1,000 L

1 L/1,000 L

8.8–28.1 g/ha

0.25% v/v

0.1% v/v

14.6–4 mL/ac

2.5 L/1,000 L

1 L/1,000 L

Apply POST with a hooded sprayer between the rows.

Apply to actively growing weeds up to 10 cm tall.

Apply in a minimum of 100 L/ha (40 L/ac) water.

Do NOT apply closer than 1 day to harvest.

Apply ONLY once per growing season.

PINNACLE SG (50%)

+ AGRAL 90

thifensulfuron methyl

+ non-ionic surfactant

8.25–12 g/ha

2 L/1,000 L water

4.1–6.0 g/ha

0.2% v/v

3.3–4.8 g/ac

2 L/1,000 L water

IMPORTANT: If you have the old PINNACLE (75 DF) product, the rates are 5.5–8 g/ha (2.2–3.2 g/ac) but the adjuvant rate remains the same.

Apply 3 weeks after transplanting to weeds less than 10 cm tall.

Add PINNACLE to the spray tank and agitate, then add AGRAL 90.

Do NOT apply in less than 100 L water/ha.

Do NOT apply if rain is expected within several hours.

Apply ONLY once per year.

Do NOT apply to tomatoes that are stressed.

Do NOT apply within 45 days of harvest.

Postemergent Grass and Broadleaf Herbicides

PRISM (25 DF)

or PRISM (25 SG)

+ AGRAL 90 or AG-SURF

rimsulfuron

+ non-ionic surfactant

60 g/ha

2 L/1,000 L water

15 g/ha

0.2% v/v

24 g/ac

2 L/1,000 L water

Apply POST when hairy nightshade is up to the 4 leaf stage, quackgrass is in the 3–6 leaf stage (less than 10 cm tall), annual grasses are in the 1–6 leaf stage and redroot pigweed is at the 4–6 leaf stage.

Apply ONLY once per year.

Do NOT apply if rainfall is expected within 2 hours of application.

Preharvest interval is 30 days.

May be used on processing and fresh market tomatoes.

SENCOR DF (75 DF)

metribuzin

0.2–1.1 kg/ha

0.15–0.83 kg/ha

0.08–0.44 kg/ac

Use ONLY on transplant tomatoes grown for processing.

Apply POST at least 3 weeks after transplanting before weeds exceed 4 cm in height.

When making multiple applications, apply at a rate of 0.2 kg/ha.

Do NOT apply more than 4 times a year.

Direct spray to bottom one-third of tomato plants to reduce risk of crop injury.

Do NOT apply when crop is under stress due to cool, wet, cloudy weather or excessively hot temperatures.

Do NOT use on muck soils.

Do NOT use on soils with less than 2% organic matter.

Use lower rates on sandy soils, higher rates on clay soils.

Preharvest interval for single applications is 60 days. Preharvest interval for smaller multiple applications is 30 days from the last application.

SENCOR 480 F (480 g/L)

metribuzin

0.3 L/ha

0.14 kg/ha

0.12 L/ac

Use ONLY on transplant tomatoes grown for processing.

Apply up to 4 POST applications per season.

Apply before the weeds are 2.5 cm in height.

BRAVO 500 fungicide may be tank-mixed with this treatment at 2.4–4.8 L/ha (1.2–2.4 kg/ha active). Control of annual grasses may be reduced.

Do NOT apply when crop is under stress due to cool, wet, cloudy weather or excessively hot temperatures.

Do NOT use on muck soils.

Do NOT use on soils with less than 2% organic matter.

Do NOT exceed the maximum total rate of SENCOR 480 F recommended for your soil.

Preharvest interval is 30 days.

Postemergent Tank-Mix Options

PRISM (25 DF)

or PRISM (25 SG)

+ PINNACLE SG (50%)

+ AGRAL 90

rimsulfuron

+ thifensulfuron methyl

+ non-ionic surfactant

60 g/ha

12 g/ha

2 L/1,000 L water

15 g/ha

4.125–6.0 g/ha

0.2% v/v

24 g/ac

4.8 g/ac

2 L/1,000 L water

IMPORTANT: If you have the old PINNACLE (75 DF) product, the rates are 5.5–8 g/ha (2.2–3.2 g/ac) but the adjuvant rate remains the same.

Use ONLY on transplant tomatoes grown for processing.

Apply POST through ground application, when hairy nightshade is up to the 4 leaf stage, quackgrass is in the 3–6 leaf stage (less than 10 cm tall), annual grasses are in the 1–6 leaf stage and redroot pigweed is at the 4–6 leaf stage.

Apply to weeds 10–21 days after transplanting tomatoes.

Do NOT apply in less than 200 L water/ha.

Do NOT apply if rain is expected within 2 hours of application.

Do NOT apply to tomatoes that are stressed.

Do NOT apply within 45 days of harvest.

* See Table 4-1. Herbicides Used in Ontario, page 29, for formulations available. Not all formulations registered on all crops. See label for specific uses and rates.

Publication 75

Topics

Explore Government

Resources

Contacts