crop-chem-docs/corpus/epa_ppls/100-829.md

# Dual II Magnum SI Herbicide

- EPA Reg No: **100-829**
- Registrant: SYNGENTA CROP PROTECTION, LLC
- Signal word: Caution
- Active ingredients: S-Metolachlor (71%)
- Label accepted: 2023-01-24
- Source PDF: https://www3.epa.gov/pesticides/chem_search/ppls/000100-00829-20230124.pdf

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UNITED STATES ENVIRONMENTAL PROTECTION AGENCY 
 WASHINGTON, DC 20460 
 
 
 
OFFICE OF CHEMICAL SAFETY 
AND POLLUTION PREVENTION 
 
January 24, 2023 
 
Rachel Hardie 
Regulatory Product Manager, Herbicides 
Syngenta Crop Protection, LLC 
P.O. Box 18300 
Greensboro, NC 27419 
 
Subject: Registration Review Label Amendments Incorporating Mitigation Measures from 
the Interim Decision for S-Metolachlor and the National Marine Fisheries 
Services’ (NMFS) Biological Opinion on the Effects of S-Metolachlor on Pacific 
Salmonids 
 Product Name: DUAL II MAGNUM SI HERBICIDE 
 EPA Registration Number: 100-829 
 Application Dates: 6/11/2021 and 9/3/2021 
Decision Numbers: 576420 and 578266 
 
Dear Rachel Hardie: 
 
The Agency, in accordance with the Federal Insecticide, Fungicide and Rodenticide Act 
(FIFRA), as amended, has completed reviewing all the information submitted with your 
application to support the Registration Review of the above referenced product in connection 
with the S-Metolachlor Interim Decision. The Agency has concluded that your submission is 
acceptable. 
 
This letter also addresses the label mitigation resulting from the NMFS’ Biological Opinion on 
the effects of S-Metolachlor on Pacific salmonids. The Agency has concluded that your 
submission is also acceptable. The label referred to above, submitted in connection with 
registration under FIFRA, as amended, is acceptable. 
 
Should you wish to add/retain a reference to the company’s website on your label, then please be 
aware that the website becomes labeling under the Federal Insecticide Fungicide and Rodenticide 
Act and is subject to review by the Agency. If the website is false or misleading, the product 
would be misbranded and unlawful to sell or distribute under FIFRA section 12(a)(1)(E). 40 
CFR 156.10(a)(5) list examples of statements EPA may consider false or misleading. In addition, 
regardless of whether a website is referenced on your product’s label, claims made on the 
website may not substantially differ from those claims approved through the registration process. 
Therefore, should the Agency find or if it is brought to our attention that a website contains false 
or misleading statements or claims substantially differing from the EPA approved registration, 
the website will be referred to the EPA’s Office of Enforcement and Compliance.

Page 2 of 2 
EPA Reg. No. 100-829 
Decision No. 576420 and 578266 
 
A stamped copy of your labeling is enclosed for your records. This labeling supersedes 
all previously accepted labeling. You must submit one copy of the final printed labeling 
before you release the product for shipment with the new labeling. In accordance with 40 
CFR 152.130(c), you may distribute or sell this product under the previously approved 
labeling for 12 months from the date of this letter. After 12 months, you may only 
distribute or sell this product if it bears this new revised labeling or subsequently 
approved labeling. “To distribute or sell” is defined under FIFRA section 2(gg) and its 
implementing regulation at 40 CFR 152.3. 
 
If you have any questions about this letter, please contact Anna Senninger at 
senninger.anna@epa.gov. 
 
 Sincerely, 
 
 
 Linda Arrington, Branch Chief 
 Risk Management and Implementation Branch 4 
 Pesticide Re-Evaluation Division 
 Office of Pesticide Programs 
 
 
 
Enclosure

Dual II Magnum SI
Page 1
[Master Label]
S-METOLACHLOR GROUP 15 HERBICIDE
Sale, use and distribution of this product in Nassau and Suffolk Counties in the 
State of New York is prohibited.
Dual II Magnum® SI Herbicide
For custom application to dry fertilizer only for weed control in corn and soybeans
Active Ingredient:
S-metolachlor (CAS No. 87392-12-9):..................................................................... 71.0%
Other Ingredients: 29.0%
Total: 100.0%
This product contains petroleum distillates, xylene, or xylene range aromatic solvent.
Dual II Magnum SI contains 6.3 lbs. of active ingredient per gallon.
KEEP OUT OF REACH OF CHILDREN.
CAUTION
See additional precautionary statements and directions for use inside booklet.
EPA Reg. No. 100-829
SCP 829A
275 gallons
Net Contents
_____ gallons
Net Contents
 Jan 24, 2023
100-829

Dual II Magnum SI 
Page 2 
 
FIRST AID 
If in eyes x Hold eye open and rinse slowly an d gently with water for 15-20 
minutes. 
x Remove contact lenses, if present, after the first 5 minutes, then 
continue rinsing eye. 
x Call a poison control center or doctor for treatment advice. 
If on skin or 
clothing 
x Take off contaminated clothing. 
x Rinse skin immediately with plenty of water for 15-20 minutes. 
x Call a poison control center or doctor for treatment advice. 
If swallowed x Call a poison control center or doctor immediately for treatment 
advice. 
x Do not give any liquid to the person. 
x Do not induce vomiting unless told to do so by the poison control 
center or doctor. 
x Do not give anything by mouth to an unconscious person. 
If inhaled x Move person to fresh air. 
x If person is not breathing, call 911 or an ambulance, then give 
artificial respiration, preferably mouth-to-mouth, if possible. 
x Call a poison control center or doctor for further treatment advice. 
NOTE TO PHYSICIAN 
Contains petroleum distillate – vomiting may cause aspiration pneumonia. 
Have the product container or label with you when calling a poison control center or 
doctor, or going for treatment. 
HOT LINE NUMBER 
For 24-Hour Medical Emergency Assistance (Human or Animal) or 
Chemical Emergency Assistance (Spill, Leak, Fire, or Accident), 
Call 
1-800-888-8372 
 
 
PRECAUTIONARY STATEMENTS 
 
Hazards to Humans and Domestic Animals 
 
CAUTION 
 
Harmful if swallowed or absorbed through skin. Avoid contact with eyes, skin, or 
clothing. May cause skin sensitization reactions in some people. 
 
Personal Protective Equipment (PPE) 
 
Some materials that are chemical-resistant to this product are listed below. 
 
Applicators and other handlers must wear:

Dual II Magnum SI 
Page 3 
 
x Long-sleeved shirt and long pants 
x Chemical-resistant gloves, such as barr ier laminate, butyl rubber, nitrile rubber, 
or viton 
x Shoes plus socks 
 
Follow manufacturer's instructions for cleaning/maintaining PPE. If no such instructions 
for washables, use detergent and hot water. Keep and wash PPE separately from other 
laundry. 
 
Engineering Control Statements 
 
When handlers use closed systems or enclosed cabs in a manner that meets the 
requirements listed in the Worker Protection Standard (WPS) for agricultural pesticides 
[40 CFR 170.240(d)(4-6)], the handler PPE requirements may be reduced or modified 
as specified in the WPS. 
 
User Safety Recommendations 
 
Users should:
 
 
x Wash hands before eating, drinking, chewing gum, using tobacco, or using the 
toilet. 
x Remove clothing immediately if pestici de gets inside. Then wash thoroughly and 
put on clean clothing. 
x Remove PPE immediately after handling this product. Wash the outside of 
gloves before removing. As soon as possible, wash thoroughly and change into 
clean clothing. 
 
Environmental Hazards 
 
Do not apply directly to water, to areas where surface water is present, or to intertidal 
areas below the mean high water mark. Do not contaminate water when disposing of 
equipment wash water or rinsate. 
 
Ground Water Advisory 
 
S-metolachlor is known to leach through soil into groundwater under certain conditions 
as a result of label use. This chemical may leach into groundwater in areas where soils 
are permeable, particularly where the water table is shallow.

Dual II Magnum SI 
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Surface Water Advisory 
 
This product may impact surface water quality due to runoff of rain water or through 
ground application drift. This is especially true for poorly draining soils and soils with 
shallow groundwater. This product is classified as having high potential for reaching 
surface water via runoff for several weeks or months after application. 
A level, well-maintained vegetative buffer strip between areas to which this product is 
applied and surface water features such as ponds, streams, and springs will reduce the 
potential loading of S-metolachlor from runoff water and sediment. Runoff of this 
product will be reduced by avoiding applications when rainfall or irrigation is expected to 
occur within 48 hours. 
 
NON-TARGET ORGANISM ADVISORY 
 
This product is toxic to plants and may adversely impact the forage and habitat of non-
target organisms, including pollinators, in areas adjacent to the treated site. Protect the 
forage and habitat of non-target organisms by following label directions intended to 
minimize spray drift. 
 
Reporting Ecological Incidents 
 
To report ecological incidents, including mortality, injury, or harm to plants and animals, 
call 1-800-888-8372. 
 
 
Mixing/Loading Instructions 
 
Care must be taken when using this product to prevent spills, or improper disposal of 
excess pesticide, herbicide/fertilizer mixtures, or rinsates. 
 
Check-valves or anti-siphoning devices must be used on all mixing equipment. 
 
This product may not be mixed or loaded within 50 ft. of perennial or intermittent 
streams and rivers, natural or impounded lakes and reservoirs. This product may not 
be mixed/loaded or used within 50 ft. of all wells, including abandoned wells, drainage 
wells, and sink holes. Operations that involve mixing, loading, rinsing, or washing of 
this product into or from pesticide handling or application equipment or containers within 
50 ft. of any well are prohibited, unless conducted on an impervious pad constructed to 
withstand the weight of the heaviest load that may be positioned on or moved across 
the pad. Such a pad shall be designed and maintained to contain any product spills or 
equipment leaks, container or equipment rinse or wash water, and rain water that may 
fall on the pad. Surface water shall not be allowed to either flow over or from the pad, 
which means the pad must be self-contained. The pad shall be sloped to facilitate 
material removal. An unroofed pad shall be of sufficient capacity to contain at a 
minimum 110% of the capacity of the largest pesticide container or application 
equipment on the pad. A pad that is covered by a roof of sufficient size to completely

Dual II Magnum SI 
Page 5 
 
exclude precipitation from contact with the pad shall have a minimum containment 
capacity of 100% of the capacity of the largest pesticide container or application 
equipment on the pad. Containment capacities as described above shall be maintained 
at all times. The above-specified minimum containment capacities do not apply to 
vehicles when delivering pesticide shipments to the mixing/loading site. 
 
 
CONDITIONS OF SALE AND LIMITATION OF WARRANTY AND LIABILITY 
 
NOTICE: Read the entire Directions for Use and Conditions of Sale and Limitation of 
Warranty and Liability before buying or using this product. If the terms are not 
acceptable, return the product at once, unopened, and the purchase price will be 
refunded. 
 
The Directions for Use of this product must be followed carefully. It is impossible to 
eliminate all risks inherently associated with the use of this product. Crop injury, 
ineffectiveness or other unintended consequences may result because of such factors 
as manner of use or application, weather or crop conditions, presence of other materials 
or other influencing factors in the use of the product, which are beyond the control of 
SYNGENTA CROP PROTECTION, LLC or Seller. To the extent permitted by 
applicable law, Buyer and User agree to hold SYNGENTA and Seller harmless for any 
claims relating to such factors. 
 
SYNGENTA warrants that this product conforms to the chemical description on the label 
and is reasonably fit for the purposes stated in the Directions for Use, subject to the 
inherent risks referred to above, when used in accordance with directions under normal 
use conditions. To the extent permitted by applicable law, (1) this warranty does not 
extend to the use of the product contrary to label instructions or under conditions not 
reasonably foreseeable to or beyond the control of Seller or SYNGENTA, and (2) Buyer 
and User assume the risk of any such use. TO THE EXTENT PERMITTED BY 
APPLICABLE LAW, SYNGENTA MAKES NO WARRANTIES OF MERCHANTABILITY 
OR OF FITNESS FOR A PARTICULAR PURPOSE NOR ANY OTHER EXPRESS OR 
IMPLIED WARRANTY EXCEPT AS WARRANTED BY THIS LABEL. 
 
To the extent permitted by applicable law, in no event shall SYNGENTA be liable for 
any incidental, consequential or special damages resulting from the use or handling of 
this product. TO THE EXTENT PERMITTED BY APPLICABLE LAW, THE 
EXCLUSIVE REMEDY OF THE USER OR BUYER, AND THE EXCLUSIVE LIABILITY 
OF SYNGENTA AND SELLER FOR ANY AND ALL CLAIMS, LOSSES, INJURIES 
OR DAMAGES (INCLUDING CLAIMS BASED ON BREACH OF WARRANTY, 
CONTRACT, NEGLIGENCE, TORT, STRICT LIABILITY OR OTHERWISE) 
RESULTING FROM THE USE OR HANDLING OF THIS PRODUCT, SHALL BE THE 
RETURN OF THE PURCHASE PRICE OF THE PRODUCT OR, AT THE ELECTION 
OF SYNGENTA OR SELLER, THE REPLACEMENT OF THE PRODUCT.

Dual II Magnum SI 
Page 6 
 
SYNGENTA and Seller offer this product, and Buyer and User accept it, subject to the 
foregoing Conditions of Sale and Limitations of Warranty and Liability, which may not be 
modified except by written agreement signed by a duly authorized representative of 
SYNGENTA.

Dual II Magnum SI 
Page 7 
 
DIRECTIONS FOR USE 
 
It is a violation of federal law to use this product in a manner inconsistent with its 
labeling. 
 
Endangered Species Protection Requirements 
 
It is a Federal offense to use any pesticide in a manner that results in an unauthorized 
“take” (e.g., kill or otherwise harm) of an endangered species and certain threatened 
species, under the Endangered Species Act section 9. When using this product, you 
must follow the measures contained in the Endangered Species Protection Bulletin for 
the area in which you are applying the product. You must obtain a Bulletin no earlier 
than six months before using this product. To obtain Bulletins, consult 
http://www.epa.gov/espp/, call 1-844-447-3813, or email ESPP@epa.gov. You must use 
the Bulletin valid for the month in which you will apply the product. 
 
Dual II Magnum SI should be used only in accordance with recommendations on this 
label or in separately published EPA-accepted supplemental labeling recommendations 
for this product. 
 
Do not apply this product in a way that will contact workers or other persons, either 
directly or through drift. Only protected handlers may be in the area during application. 
For any requirements specific to your State or Tribe, consult the agency responsible for 
pesticide regulation. 
 
AGRICULTURAL USE REQUIREMENTS 
 
Use this product only in accordance with its labeling and with the Worker Protection 
Standard, 40 CFR part 170. This Standard contains requirements for the protection of 
agricultural workers on farms, forests, nurseries, and greenhouses, and handlers of 
agricultural pesticides. It contains requirements for training, decontamination, 
notification, and emergency assistance. It also
 contains specific instructions and 
exceptions pertaining to the statements on this label about personal protective 
equipment (PPE) and restricted-entry interval. The requirements in this box only apply 
to uses of this product that are covered by the Worker Protection Standard. 
 
Do not enter or allow worker entry into treated areas during the restricted
-entry 
interval (REI) of 24 hours. Exception: If the product is soil-injected or soil-
incorporated, the Worker Protection Standard, under certain circumstances, allows 
workers to enter the treated area if there will be no contact with anything that has been 
treated. 
 
PPE required for early entry to treated areas that is permitted under the Worker 
Protection Standard and that involves contact with anything that has been treated, such 
as plants, soil, or water is:

Dual II Magnum SI 
Page 8 
 
x Coveralls 
x Chemical- resistant gloves, such as barrier laminate, butyl rubber, nitrile rubber, 
or viton 
x Shoes plus socks 
 
 
FAILURE TO FOLLOW THE DIRECTIONS FOR USE AND PRECAUTIONS ON THIS 
LABEL MAY RESULT IN POOR WEED CONTROL, CROP INJURY, OR ILLEGAL 
RESIDUES. 
 
To avoid drift, do not apply under windy conditions. Avoid application overlaps other 
than those used for even fertilizer application, as crop injury may result. 
 
Sale, use and distribution of this product in Nassau and Suffolk Counties in the 
State of New York is prohibited. 
 
GENERAL INFORMATION 
 
Dual II Magnum SI is a liquid herbicide formulation designed for impregnation on dry 
bulk fertilizer and recommended as a preplant surface-applied, preplant incorporated, or 
preemergence treatment when impregnated on fertilizer for control of most annual 
grasses and certain broadleaf weeds in corn (all types), and soybeans. Dual II Magnum 
SI can be used in bulk fertilizer blenders and on-board fertilizer impregnation systems. 
Dual II Magnum SI contains a red dye to aid operators to determine when a uniform 
blend is achieved. This low viscosity (free-flowing) formulation adsorbs quickly and 
thoroughly to dry fertilizer, improving the flowability of the fertilizer/herbicide mixture 
over varying temperature and moisture conditions. 
 
Note: Dual II Magnum SI will not mix with water or liquid fertilizers. 
 
Do not apply under conditions which favor runoff or wind erosion of soil containing this 
product to non-target areas. 
 
To prevent off-site movement due to runoff or wind erosion, 
 
1. Avoid treating powdery dry or light sa nd soils when conditions are favorable for 
wind erosion. Under these conditions, the soil surface should first be settled by 
rainfall or irrigation. 
 
2. Do not apply to impervious substrates, such as paved or highly compacted 
surfaces. 
 
3. Do not use tailwater from the first flood or furrow irrigation of treated fields to treat 
nontarget crops, unless at least 1/2 inch of rainfall has occurred between 
application and the first irrigation.

Dual II Magnum SI 
Page 9 
 
If Dual II Magnum SI on dry fertilizer is incorporated, any supplemental tillage before 
planting must not exceed the depth of incorporation. 
 
Dry weather following an application of Dual II Magnum SI on dry fertilizer may reduce 
effectiveness. Cultivate if weeds develop. 
 
Dual II Magnum SI on dry fertilizer will not control emerged weeds. 
 
Where reference is made to weeds partially controlled, partial control can either mean 
erratic control from good to poor, or consistent control at a level below that generally 
considered acceptable for commercial weed control. 
 
Precaution: Injury may occur to crops other than corn following the use of Dual II 
Magnum SI under abnormally high soil moisture conditions during early development of 
the crop. 
 
WEED RESISTANCE MANAGEMENT 
 
Dual II Magnum SI herbicide contains the active ingredient S-metolachlor which inhibits 
the formation of very long chain fatty acids (VLCFA, Site of Action Group 15). Some 
naturally occurring weed populations have been identified as resistant to Group 15 
herbicides. Selection of resistant biotypes, through repeated use of these herbicides or 
lower than recommended use rates in the same field, may result in weed control 
failures. A resistant biotype may be present where poor performance cannot be 
attributed to adverse environmental conditions or improper application methods. If 
resistance is suspected, contact your local Syngenta representative and/or agricultural 
advisor for assistance. 
 
Principles of Herbicide Resistant Weed Management 
Scout and know your field 
• Know weed species present in the field to be treated through scouting and field 
history. An understanding of weed biology is useful in designing a resistance 
management strategy. Ensure the weed management program will control all 
weeds present. 
• Fields should be scouted prior to application to determine species present and 
growth stage. Always apply this herbicide at the full labeled rate and correct 
timing for the weeds present in the field. 
Utilize non-herbicidal practices to add diversity 
• Use diversified management tactics su ch as cover crops, mechanical weed 
control, harvest weed seed control, and crop rotation as appropriate. 
Use good agronomic practices, start clean and stay clean 
• Use good agronomic practices that enhance crop competitiveness.

Dual II Magnum SI 
Page 10 
 
• Plant into weed-free fields utilizing til lage or an effective burndown herbicide for 
control of emerged weeds. 
• Sanitize farm equipment to avoid spreading seed or vegetative propagules prior 
to leaving fields. 
Difficult to control weeds 
• Fields with difficult to control weeds should be planted in rotation with crops that 
allow the use of herbicides with an alternative mode of action or different 
management practices. 
• Difficult to control weeds may require sequential applications, such as a broad 
spectrum preemergence herbicide followed by one or more postemergence 
herbicide applications. Utilize herbicides containing different modes of action 
effective on the target weeds in sequential applications. 
Do not overuse the technology 
• Do not use more than two applications of this or any other herbicide with the 
same mode of action in a single growing season unless mixed with an herbicide 
with a different mode of action which provides overlapping spectrum for difficult 
to control weeds. 
Scout and inspect fields following application 
• Prevent an influx of weeds into the fi eld by controlling weeds in field borders. 
• Scout fields after application to veri fy that the treatment was effective. 
 
• Suspected- herbicide resistant weeds may be identified by these indicators 
• Failure to control a weed species normally controlled by the herbicide at 
the dose applied, especially if control is achieved on adjacent weeds; 
• A spreading patch of non-controlled plants of a particular weed species; 
and 
• Surviving plants mixed with controll ed individuals of the same species. 
• Report non-performance of this product to your Syngenta retailer, Syngenta 
representative, or call 1-866-Syngent(a) (866-796-4368). If resistance is 
suspected ensure weed escapes are controlled using an herbicide with an 
effective mode of action and/or use non-chemical means to prevent further seed 
production. 
Prevent weed escapes before, during, and after harvest 
• Do not allow weed escapes to produce seed or vegetative structures such as 
tubers or stolons which contribute to spread and survival. Consider harvest 
weed seed management and control weeds postharvest to prevent seed 
production. 
Resistant Weeds

Dual II Magnum SI 
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x Contact your local Syngenta representative, retailer, crop advisor or extension 
agent to determine if weeds resistant to this mode of action are present in your 
area. If resistant biotypes have been reported, use the full labeled rate of this 
product, apply at the labeled timing, and tank-mix with a different mode of action 
product so there are multiple effective modes of application for each suspected 
resistant weed. 
 
 
SOIL TEXTURES AND HERBICIDE RATES 
 
Where rates are based on coarse-, medium-, or fine-textured soils, it is understood that 
soil textural classes are generally categorized as follows: 
 
Coarse Medium Fine 
Sand Loam Sandy clay loam 
Loamy sand Silt loam Silty clay loam 
Sandy loam Silt Clay loam 
 Sandy clay 
 Silty clay 
 Clay 
 
Within rate ranges in the rate tables and elsewhere on this label, use the lower rate on 
soils relatively coarse-textured or low in organic matter; use the higher rate on soils 
relatively fine-textured or high in organic matter. 
 
Note: Thoroughly clean application equipment before using. Dispose of cleaning 
solution in a responsible manner. Do not use an applicator contaminated with any other 
materials, or crop damage or application irregularities may result. 
 
APPLICATION PROCEDURES 
 
Application Timing 
 
Dual II Magnum SI on dry fertilizer may be applied for weed control in certain crops at 
various times. Refer to the given crop section of the label to determine if application 
timings listed below are recommended. 
 
Preplant Surface-Applied: For minimum-tillage or no-tillage systems only, Dual II 
Magnum SI on dry fertilizer may be applied up to 45 days before planting certain crops. 
Use only split applications for treatments made 30-45 days before planting, with 2/3 the 
recommended broadcast rate for the crop and soil texture applied initially and the 
remaining 1/3 at planting. Treatments less than 30 days before planting may be made 
either as a split or a single application. Refer to individual crop to determine if early 
preplant surface application is recommended. To the extent possible, do not move

Dual II Magnum SI 
Page 12 
 
treated soil out of the row or move untreated soil to the surface during planting, or weed 
control will be diminished. 
 
Preplant Incorporated: Apply Dual II Magnum SI on dry fertilizer to the soil and 
incorporate into the top 2 inches of soil within 14 days before planting, using a finishing 
disk, harrow, rolling cultivator, or similar implement capable of providing uniform 2-inch 
incorporation. Use a preplant incorporated application if furrow irrigation is used or 
when a period of dry weather after application is expected. If crop will be planted on 
beds, apply and incorporate Dual II Magnum SI on dry fertilizer after bed formation, 
unless specified otherwise. 
 
Preemergence: Apply Dual II Magnum SI on dry fertilizer before planting and before 
weeds emerge. 
 
Special Application Procedures 
 
Fall Application (Only in IA, MN, ND, SD, WI, and portions of NE and IL – See 
specific instructions in the Corn and Soybeans sections of this label for timing of 
application and other information): Do not apply to frozen ground. Use on medium 
and fine soils with greater than 2.5% organic matter that will be planted to corn or 
soybeans the next spring. Ground may be tilled before or after application. Do not 
exceed a 2 to 3-inch incorporation depth if tilled after treatment. Note: If a spring 
application is made, the total rate of the fall plus spring applications must not exceed the 
maximum total rate for the specific crop, or illegal residues may result. 
 
Ground Application: Apply Dual II Magnum SI on dry fertilizer by ground equipment in 
200 lbs. or more of the herbicide/fertilizer mixture per acre, unless otherwise specified. 
 
For information on impregnating dry fertilizer, see the Dry Bulk Granular Fertilizers 
section. 
 
For information on application using variable-rate technologies, see the Variable-Rate 
Application section. 
 
DUAL II MAGNUM SI APPLIED ALONE ON DRY FERTILIZER 
 
WEEDS CONTROLLED 
 
barnyardgrass foxtail millet signalgrass (Brachiaria) 
 (watergrass) galinsoga southwestern cupgrass 
bristly foxtail giant foxtail tall waterhemp 
carpetweed goosegrass wild proso millet* 
common waterhemp green foxtail witchgrass 
crabgrass pigweed woolly cupgrass 
crowfootgrass prairie cupgrass yellow foxtail 
Eastern black nightshade red rice yellow nutsedge

Dual II Magnum SI 
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fall panicum robust foxtails 
Florida pusley (purple, white) 
 
*For control of these weeds in corn only, refer to the Corn – Woolly Cupgrass and 
Wild Proso Millet Control Program section of this label. 
 
Weeds Partially Controlled*: common purslane, eclipta, Florida beggarweed**, hairy 
nightshade, sandbur, seedling johnsongrass, shattercane, Texas panicum***, volunteer 
sorghum, wild proso millet, and woolly cupgrass. 
 
 *See General Information section. Control of these weeds can be erratic, due 
partially to variable weather conditions. Control may be improved by following these 
suggested procedures: 
 
1. In Corn, use 2.4-3.0 pts./A or the preplant surface-applied rates for Dual II 
Magnum SI alone on dry fertilizer when making preplant incorporated or 
preemergence applications. 
 
2. Thoroughly till moist soil to destroy germinating and emerged weeds. If Dual II 
Magnum SI on dry fertilizer is to be applied preplant incorporated, this tillage may 
be used to incorporate Dual II Magnum SI on dry fertilizer if uniform 2-inch 
incorporation is achieved as recommended under Application Procedures. 
 
3. Plant crop into moist soil immediately after tillage. If Dual II Magnum SI on dry 
fertilizer is to be used broadcast preemergence, apply before planting. 
 
4. If available, sprinkler irrigate within 2 days after application. Apply 1/2-1 inch of 
water. Use lower water volume (1/2 inch) on coarse-textured soils and higher 
volume (1 inch) on fine-textured soils. 
 
5. If irrigation is not possible and rain does not occur within 2 days after planting 
and application, weed control may be decreased. Under these conditions, a 
uniform, shallow cultivation is recommended as soon as weeds emerge. 
 
 **For partial control of this weed, use a minimum of 1.6 pts./A of Dual II Magnum SI on 
dry fertilizer and apply preemergence just before planting. 
 
***For partial control of this weed, use a minimum of 1.6 pts./A of Dual II Magnum SI on 
dry fertilizer and irrigate after application. 
 
ROTATIONAL CROPS 
 
Do not rotate to food or feed crops other than those listed below. 
 
Dual II Magnum SI on Dry Fertilizer Alone: (1) If crop treated with Dual II Magnum SI 
alone on dry fertilizer is lost, corn, cotton, peanuts, pod crops, potatoes, safflowers,

Dual II Magnum SI 
Page 14 
 
grain or forage sorghum (Concep®-treated), and soybeans may be replanted 
immediately. Do not make a second broadcast application of Dual II Magnum SI on dry 
fertilizer. (2) Barley, oats, rye, or wheat may be planted 4 1/2 months following 
treatment; alfalfa may be planted 4 months following application. Tomatoes may be 
planted 6 months following application. (3) Corn, cotton, peanuts, pod crops, potatoes, 
safflowers, grain or forage sorghum, soybeans, root crops, tobacco, barley, buckwheat, 
milo, oats, rice, rye, wheat, cabbage, or peppers may be planted in the spring following 
treatment. Clover may be seeded 9 months following application. Do not graze or feed 
forage or fodder from cotton to livestock. (4) Following a lay-by treatment or multiple 
treatments of Dual Magnum® brands applied the previous season, any crop in (1) 
above, in addition to tobacco, cabbage, peppers, stone fruits, or tree nuts, may be 
planted in the spring. 
 
Dual II Magnum SI Mixtures on Dry Fertilizer or Sequential Treatments: For 
Rotational Crops restrictions for Dual II Magnum SI used in mixture or sequentially, 
refer to the statements/restrictions above for Dual II Magnum SI and to the respective 
product labels of any partner(s) for additional statements/restrictions. 
 
Important Notes: To avoid injury to rotational alfalfa or clover: (1) Do not apply more 
than 1.9 lbs. active ingredient per acre (2.4 pts. of Dual II Magnum SI) preemergence 
(including preplant surface, preplant incorporated, etc.). (2) Do not make lay-by 
applications of Dual II Magnum SI on dry fertilizer. 
 
CORN (ALL TYPES) – DUAL II MAGNUM SI ALONE ON DRY FERTILIZER 
 
CORN RATE RESTRICTIONS 
1) Maximum Single Application Rate: 2.4 pt/A/application-(s-metolachlor 1.89 lb ai/A) 
2) Maximum Annual Rate: 4.71 pts/A/year (3.71 lb ai/A/year) 
a. DO NOT exceed 3.71 lb ai/A/year of s-metolachlor containing products. 
 
Apply Dual II Magnum SI on dry fertilizer, either preplant surface, preplant incorporated, 
or preemergence, using the appropriate rate specified below. 
 
PREPLANT SURFACE-APPLIED 
 
Refer to instructions for use of Dual II Magnum SI alone under Application 
Procedures. 
 
Fall Application: 
 
1. Apply after September 30 in ND, SD, MN, WI, and north of Route 30 in IA. 
2. Apply after October 15 north of Route 91 in NE and south of Route 30 in IA. 
3. Apply after October 31 north of Route 136 in IL. 
 
In all locations, apply to crop stubble after harvest when the sustained soil temperature 
at a 4-inch depth is less than 55°F and falling. In minimum-till or no-tillage systems on

Dual II Magnum SI 
Page 15 
 
soils having greater than 2.5% organic matter, use 2.0-2.4 pts./A on medium-textured 
and 2.4 pts./A on fine-textured soils. Do not apply to frozen ground. A tillage operation 
may precede the application. A fall and/or a spring tillage may follow application, but do 
not exceed an incorporation depth greater than 2-3 inches. Minimize furrow and ridge 
formation in the tillage operations. Note: If a spring application is made, the total rate 
of the fall plus spring applications must not exceed the maximum total rate for corn, or 
illegal residues may result. 
 
Use on medium- and fine-textured soils with minimum-tillage or no-tillage systems in 
CO, IA, IL, IN, KS, KY, MN, MO, MT, ND, NE, SD, TN, WI, and WY. Apply 2/3 the 
recommended rate of Dual II MAGNUM SI on dry fertilizer (2.0 pts./A on medium soils 
and 2.4 pts./A on fine soils) as a split treatment 30-45 days before planting and the 
remainder at planting. Applications made less than 30 days prior to planting may be as 
either a split or single treatment. Apply 1.6 pts./A on coarse soils not more than 2 
weeks before planting. 
 
On medium- and fine-textured soils with minimum- or no-tillage systems in CT, DE, MA, 
MD, ME, MI, NH, NY, OH, PA, RI, VA, VT, and WV, preplant surface applications may 
be applied following the directions for use above. If the amount of rainfall results in 
unsatisfactory length of weed control following the earlier treatment, a postemergence 
application of an appropriately labeled broadleaf and/or grass weed herbicide may be 
used, i.e., AAtrex®, Beacon®, Bicep Magnum®, Bicep II Magnum®, Exceed®, 
Accent®, Banvel®, Basagran®, bromoxynil (Brominal or Buctril®), or 2,4-D. If the 
postemergence treatment includes the herbicide used preplant surface-applied, do not 
exceed the total labeled rate for corn on a given soil texture. Observe all directions for 
use, precautions, and limitations on the label of the postemergent herbicide. 
 
PREPLANT INCORPORATED OR PREEMERGENCE ON DRY FERTILIZER 
 
Follow instructions for use of Dual II Magnum SI alone under Application Procedures. 
On coarse soils, apply 1.2-1.6 pts./A of Dual II Magnum SI if organic matter content is 
less than 3%, or 1.6 pts./A if organic matter content is 3% or greater. On medium soils, 
apply 1.6-2.0 pts./A of Dual II Magnum SI. On fine soils, apply 1.6-2.0 pts./A of Dual II 
Magnum SI if organic matter content is less than 3%, or 2.0-2.4 pts./A if organic matter 
content is 3% or greater. 
 
Note for all applications to corn: To avoid possible illegal residues, (1) do not graze 
or feed forage from treated areas for 30 days following application and (2) do not 
harvest sweet corn ears from treated areas for 30 days following application. 
 
Shattercane, Wild Proso Millet, Woolly Cupgrass, and Eclipta – Partial Control: 
For more consistent partial control of shattercane, wild proso millet, woolly cupgrass, or 
eclipta, apply 2.4-3.0 pts./A on dry fertilizer as a single application; or apply 1.2-
1.6 pts./A of Dual II Magnum SI on dry fertilizer preplant incorporated followed by 1.0-
1.33 pts./A of Dual II Magnum preemergence; however, do not apply more than a total 
of 3.0 pts./A. Make the preemergence application before planting, and before weeds

Dual II Magnum SI 
Page 16 
 
emerge. Apply the 1.6 pts./A rate of Dual II Magnum SI when a heavy infestation of 
shattercane, wild proso millet, woolly cupgrass, or eclipta is expected. A shallow 
cultivation may be needed to control any late emerging weeds. 
 
Woolly Cupgrass and Wild Proso Millet Control Program: For control of these 
species, use the following 3-step program: (1) Apply Dual II Magnum SI on dry fertilizer 
early preplant, preplant incorporated, or preemergence before planting at 2.0 pts./A on 
medium soils and 2.4 pts./A on fine-textured soils, up to the maximum label rate. Lightly 
incorporate with a rotary hoe if rainfall does not occur within 5-7 days; (2) Apply a 
postemergence tank mix of Beacon at 0.38 oz./A or Exceed at 1 packet per 4 acres plus 
Accent SP at 0.33 oz./A plus 1.0 qt. of crop oil concentrate plus 1.0 gal./A of 28% 
nitrogen, or the equivalent amount of ammonium sulfate, when grasses are 2-3 inches 
tall and the corn is at least 4 inches tall; and (3) Cultivate 14-21 days after the 
postemergence application. 
 
Notes: (1) Do not apply more than the labeled application rate for a given soil texture 
per year, either as a single or split treatment, or illegal residues may result. (2) In corn, 
Dual II Magnum SI on dry fertilizer may be used up to 3.0 pts./A as either a preplant 
surface, preplant incorporated, or preemergence treatment before planting on soils 
having an organic matter content between 6% and 20% or up to 2.4 pts./A on any soil 
for extended residual control and where severe stands of problem weeds are expected. 
(3) In the event of escape of annual weeds following a preplant surface, preplant 
incorporated, or preemergence treatment of Dual II Magnum SI on dry fertilizer, follow 
with a postemergence application of an appropriately labeled broadleaf and/or grass 
weed herbicide, i.e., AAtrex, Beacon, Exceed, Accent, Banvel, Basagran, Brominal, 
Buctril, or 2,4-D. If the postemergence treatment includes the herbicide used in the 
earlier treatment, i.e., AAtrex, do not exceed the total labeled rate for corn on a given 
soil texture. (4) Brominal or Buctril may be applied postemergence alone or in tank mix 
combination with AAtrex. Do not exceed 1.2 lbs. a.i./A of AAtrex in tank mix 
combination with Brominal or Buctril, postemergence. Refer to the AAtrex, Brominal, 
and Buctril labels for specific rates and precautions. (5) Do not use Dual II Magnum SI 
on fertilizer on peat or muck soils. 
 
CORN – DUAL II MAGNUM SI COMBINATIONS (SEQUENTIALLY-APPLIED) ON 
DRY BULK FERTILIZER 
 
Dual II Magnum SI may be blended on dry bulk fertilizer. In a separate application, 
other herbicides registered for use with Dual II Magnum and also registered for 
application on dry fertilizer may be blended with the Dual II Magnum SI fertilizer blend. 
When other products are used, follow all restrictions, rate limitations, and precautions 
on the product’s label. 
 
Notes: (1) For all applications to corn, do not graze or feed forage from treated areas 
for 30 days following application and do not harvest sweet corn ears from treated areas 
for 30 days following application, or possible illegal residues may result. (2) In corn,

Dual II Magnum SI 
Page 17 
 
Dual II Magnum SI may be used up to 2.4 pts./A on any soil for extended residual 
control and where severe stands of problem weeds are expected. 
 
Shattercane, Wild Proso Millet, Woolly Cupgrass, and Eclipta – Partial Control 
 
For more consistent partial control of shattercane, wild proso millet, woolly cupgrass, or 
eclipta, where Dual II Magnum SI on dry fertilizer is applied sequentially with other 
registered corn herbicides, apply 2.4-2.8 pts. as a single application, or the following 
applications may be made: 
 
1. Apply 1.2-1.6 pts./A of Dual II Magnum SI on dry fertilizer with 2.0 lbs. a.i./A of 
AAtrex or Princep® preplant incorporated followed by 1.0-1.33 pts. of Dual II 
Magnum preemergence. Make the preemergence application during or after 
planting, but before weeds and corn emerge. 
 
2. Apply Dual II Magnum SI on dry fertilizer at 1.6 pts./A alone or with up to 2.0 lbs. 
a.i./A of AAtrex or Princep, preplant incorporated. Do not exceed the total rate of 
triazine herbicide recommended for corn grown on a given soil texture. Follow 
with a post-directed application of Evik® 80W at 2.5 lbs./A. Refer to the Evik 80W 
label for specific directions for the post-directed application. 
 
3. Apply Eradicane® or Sutan® (or equivalent EPTC or butylate formulations) at 
labeled rates preplant incorporated, followed by a preemergence application 
before planting of Dual II Magnum SI on dry fertilizer at 1.2-1.6 pts./A. Do not 
use Eradicane or Sutan on soils where rapid degradation has been shown to 
occur. Make the preemergence application before planting, and before weeds 
emerge. 
 
Precaution: When following the application regimes in numbers 1-3 above, a shallow 
cultivation may be needed after the preemergence or postemergence application to help 
control any late emerging shattercane or wild proso millet plants. 
 
SOYBEANS – DUAL II MAGNUM SI ALONE ON DRY FERTILIZER 
 
SOYBEAN RATE RESTRICTIONS 
1) Maximum Single Application Rate: 2.4 pt/A/application-(s-metolachlor 1.89 lb ai/A) 
2) Maximum Annual Rate: 4.71 pts/A/year (3.71 lb ai/A/year) 
a. DO NOT exceed 3.71 lb ai/A/year of s-metolachlor containing products. 
 
Apply Dual II Magnum SI on dry fertilizer, either preplant surface-applied, preplant 
incorporated, or preemergence, using the appropriate rate specified below. Preplant 
Surface-Applied, Preplant Incorporated, or Preemergence: Follow instructions for 
use of Dual II Magnum SI alone under Application Procedures. 
 
Preplant Surface-Applied: Refer to instructions for use of Dual II Magnum SI alone 
under Application Procedures.

Dual II Magnum SI 
Page 18 
 
 
Fall Application: 
 
1. Apply after September 30 in ND, SD, MN, WI, and north of Route 30 in IA. 
2. Apply after October 15 north of Route 91 in NE and south of Route 30 in IA. 
3. Apply after October 31 north of Route 136 in IL. 
 
In all locations, apply to crop stubble after harvest when the sustained soil temperature 
at a 4-inch depth is less than 55°F and falling. In minimum-till or no-tillage systems on 
soils having greater than 2.5% organic matter, use 2.0-2.4 pts./A on medium-textured 
and 2.4 pts./A on fine-textured soils. Do not apply to frozen ground. A tillage operation 
may precede the application. A fall and/or a spring tillage may follow application, but do 
not exceed an incorporation depth greater than 2-3 inches. Minimize furrow and ridge 
formation in the tillage operations. Note: If a spring application is made, the total rate 
of the fall plus spring applications must not exceed the maximum total rate on 
soybeans, or illegal residues may result. 
 
Use on medium and fine soils with minimum-tillage or no-tillage systems in CO, CT, DE, 
IA, IL, IN, KS, KY, MA, MD, ME, MI, MN, MO, MT, ND, NE, NH, NY, OH, PA, RI, SD, 
TN, VA, VT, WI, WV, and WY. Apply 2/3 the recommended rate of Dual II MAGNUM SI 
(2.0 pts./A on medium soils and 2.4 pts./A on fine soils) as a split treatment 30-45 days 
prior to planting and the remainder at planting. Applications made less than 30 days 
before planting may be as either a split or single treatment. Apply 1.6 pts./A on coarse 
soils not more than 2 weeks before planting. 
 
Preplant Incorporated or Preemergence on Dry Fertilizer: On coarse soils, apply 
1.2-1.6 pts./A of Dual II Magnum SI if organic matter content is less than 3%, or 
1.6 pts./A if organic matter content is 3% or greater. On medium soils, apply 1.6-
2.0 pts./A of Dual II Magnum SI. On fine soils, apply 1.6-2.0 pts./A of Dual II Magnum 
SI if organic matter content is less than 3%, or 2.0-2.4 pts./A if organic matter content is 
3% or greater. 
 
Note: On soybeans, Dual II Magnum SI may be used up to 3.0 pts./A on dry fertilizer 
as a preplant surface-applied, preplant incorporated, or preemergence treatment before 
planting on soils having an organic matter content between 6% and 20%. The total 
Dual II Magnum SI rate applied to soybeans during any one crop should not exceed 
3.0 pts./A. 
 
DRY BULK GRANULAR FERTILIZERS 
 
Many dry bulk granular fertilizers may be impregnated or coated with Dual II Magnum SI 
alone. Dual II Magnum SI may be sequentially applied to dry bulk fertilizer in separate 
operations with other products which are registered for preplant incorporated or preplant 
surface application which are used to control weeds in crops on the Dual II Magnum SI 
label and are not prohibited from use on dry bulk granular fertilizer.

Dual II Magnum SI 
Page 19 
 
When applying Dual II Magnum SI or Dual II Magnum SI with sequentially impregnated 
products on dry bulk granular fertilizers, follow all directions for use and precautions on 
the respective product labels regarding target crops, rates per acre, soil texture, 
application methods (including timing of application), and rotational crops. 
 
All individual state regulations relating to dry bulk granular fertilizer blending, 
registration, labeling, and application are the responsibility of the individual and/or 
company selling the herbicide/fertilizer mixture. 
 
Prepare the herbicide/fertilizer mixtures by using any closed drum, belt, ribbon, or other 
commonly used dry bulk fertilizer blender. Nozzles used to spray Dual II Magnum SI 
onto the fertilizer must be placed to provide uniform spray coverage. Care should be 
taken to aim the spray directly onto the moving fertilizer and to avoid spraying the walls 
of the blender. 
 
Blender Mixing Instructions 
 
Dual II Magnum SI Alone: Fill the blender with at least 2/3 of the required amount of 
dry bulk granular fertilizer to be used. Spray the Dual II Magnum SI directly onto the 
moving dry fertilizer. Allow the fertilizer to blend for 5 minutes or until the mixture is 
uniform. Add the remainder of the fertilizer. Blend for 5 minutes or until the mixture is 
uniform. Spread the herbicide/fertilizer mixture as soon as possible. 
 
Dual II Magnum SI Combinations: Do not mix Dual II Magnum SI directly with other 
materials. Dual II Magnum SI may be applied sequentially onto dry fertilizer with other 
herbicides labeled for applications on dry fertilizer when the following procedure is 
followed: 
 
Fill the blender with at least 2/3 of the required amount of dry bulk granular fertilizer to 
be used. Spray the Dual II Magnum SI alone, directly onto the moving dry fertilizer. 
Allow the fertilizer to blend for 5 minutes or until the mixture is uniform. Then spray the 
combination partner onto the moving fertilizer. Blend the herbicide/fertilizer mixture for 
5 minutes or until uniform. Add the remainder of the fertilizer. Blend for 5 minutes or 
until the mixture is uniform. Spread the herbicide/fertilizer mixture as soon as possible. 
Follow the blender mixing instructions on the label of the companion product. 
 
Calculate amounts of Dual II Magnum SI by the following formula: 
 
2,000 X pts./A of liquid = pts. of liquid product per 
lbs. of fertilizers per acre product ton of fertilizer 
 
Pneumatic (Compressed Air) Application: Dual II Magnum SI may be applied 
through pneumatic applicators, whether the herbicide/fertilizer mixture is blender-mixed, 
or on-board fertilizer impregnation systems are used.

Dual II Magnum SI 
Page 20 
 
Dual II Magnum SI must not be mixed with any other liquid or dry material in on-board 
fertilizer impregnation system tanks. Use high quality fertilizer with a minimum of fines 
when applying Dual II Magnum SI with on-board impregnation equipment. 
 
Notes: (1) Dual II Magnum SI is designed and labeled to be applied to dry fertilizer 
only. Do not mix with water, other liquid additives, or liquid fertilizers for application by 
sprayers. Lack of mixing, poor results, and crop injury may result. (2) Drying agents 
are not recommended for use in on-board fertilizer impregnation systems. (3) When 
urea is to be used as one component in the dry bulk granular fertilizer mixture, it should 
be added to the blender last. 
 
Precautions: To avoid potential for explosion, (1) Do not impregnate Dual II Magnum SI 
or Dual II Magnum SI sequentials on ammonium nitrate, potassium nitrate, or sodium 
nitrate, either alone or in blends with other fertilizers. (2) Do not use Dual II Magnum SI 
or Dual II Magnum SI sequentials on straight unadulterated agricultural limestone, since 
absorption will not be achieved. Limestone prills which contain a binding agent and 
fertilizer blends containing limestone can be impregnated. (3) Do not mix Dual II 
Magnum SI with any water, liquid, or dry product. (4) Dual II Magnum SI may be 
applied only to dry bulk granular fertilizer. 
 
Application 
 
Apply 200 lbs. or more of the herbicide/fertilizer mixture per acre. For best results, 
apply the mixture uniformly to the soil with properly calibrated equipment immediately 
after blending. Uniform application of the herbicide/fertilizer mixture is essential to 
prevent possible crop injury and achieve weed control. Non-uniform application will 
result in unsatisfactory weed control. In areas where conventional tillage is practiced, a 
shallow incorporation of the mixture into the soil may improve weed control. On fine- or 
medium-textured soils in areas where soil incorporation is not planned, i.e., reduced 
tillage situations or in some conventional till situations, make applications approximately 
30 days before planting to allow moisture to move the herbicide/fertilizer mixture into the 
soil. On coarse-textured soils, make applications approximately 14 days prior to 
planting. 
 
Precaution: To avoid crop injury, do not use the herbicide/fertilizer mixture on crops 
where bedding occurs. 
 
VARIABLE-RATE APPLICATION 
 
Variable-Rate Broadcast Ground Application for Corn and Soybeans 
 
Variable-rate technologies may be used for more precise applications. Two additive 
factors have been determined for use in applications using variable-rate technologies. 
One of these factors (A) is directly related to soil texture and the other (B) is related to 
percent organic matter (OM) and soil texture. When these two factors are added 
together, the resulting application rate will be more precise for a soil of a given soil

Dual II Magnum SI 
Page 21 
 
texture and organic matter content. Use the formulas below to assure a more precise 
rate for any given area within a field. 
 
Formulas* for Preplant Surface-Applied, Preplant Incorporated, Preemergence, 
and Early Preplant Applications 
 
Refer to specific instructions regarding these applications in the Application 
Procedures section of this label, as well as the appropriate crop section. 
 
 Rates in Pints Per Acre 
 Preplant Surface-Applied 
Preplant Incorporated 
Preemergence Early Preplant 
 Factors Factors 
Soil Texture A B A B 
COARSE 1.2 + (0.12 x % OM) 1.45 + (0.12 x % OM) 
MEDIUM 1.4 + (0.12 x % OM) 1.7 + (0.10 x % OM) 
FINE 1.6 + (0.12 x % OM) 2.0 + (0.08 x % OM) 
 
*Do not use on soils with greater than 8% organic matter (OM). 
 
Formulas* for Fall Applications 
 
This product is registered for use only where corn or soybeans will be grown the 
following year in IA, MN, SD, ND, WI, and portions of NE and IL. Refer to specific 
instructions and restrictions regarding fall applications in the Corn and Soybeans 
sections of this label. 
 
 Rates in Pints Per Acre 
 Fall Applications 
 Factors 
Soil Texture A B 
COARSE DO NOT USE 
MEDIUM 1.68 + (0.136 x % OM) 
FINE 2.18 + (0.08 x % OM) 
 
*Do not use on soils with greater than 8% organic matter (OM). 
 
STORAGE AND DISPOSAL 
 
This product may be stored at temperatures down to 30 degrees below 0°F. 
 
Pesticide Disposal 
 
Do not contaminate water, food, or feed by storage or disposal. Open dumping is 
prohibited. Wastes resulting from the use of this product are toxic. Improper disposal of

Dual II Magnum SI 
Page 22 
 
unused pesticide, dry fertilizer mixture, or rinsate is a violation of federal law. Pesticide, 
dry fertilizer mixture, or rinsate that cannot be used according to label instructions must 
be disposed of according to federal, state, or local procedures. For guidance in proper 
disposal methods, contact your State Pesticide or Environmental Control Agency, or the 
Hazardous Waste representative at the nearest EPA Regional Office. 
 
Container Handling 
 
Refillable container. Refill this container with Dual II Magnum SI Herbicide only. Do not 
reuse this container for any other purpose. Cleaning the container before final disposal 
is the responsibility of the person disposing of the container. Cleaning before refilling is 
the responsibility of the person refilling. To clean container before final disposal, empty 
the remaining contents from this container into application equipment or mix tank. Fill 
the container about 10 percent full with water. Agitate vigorously or recirculate water 
with the pump for 2 minutes. Pour or pump rinsate into application equipment or rinsate 
collection system. Repeat this rinsing procedure two more times. Then offer for 
recycling if available or puncture and dispose of in a sanitary landfill, or by incineration, 
or by other procedures allowed by state and local authorities. 
 
For minor spills, leaks, etc., follow all precautions indicated on this label and clean up 
immediately. Take special care to avoid contamination of equipment and facilities 
during cleanup procedures and disposal of wastes. In the event of a major spill, fire, or 
other emergency, call 1-800-888-8372, day or night. 
 
 
AAtrex®, Beacon®, Bicep Magnum®, Bicep II Magnum®, Concep®, Dual Magnum®, 
Dual II Magnum®, Eradicane®, Evik®, Exceed®, Princep®, the ALLIANCE FRAME 
the SYNGENTA Logo and the PURPOSE ICON are Trademarks of a Syngenta Group 
Company 
 
Accent® trademark of E. I. duPont de Nemours and Company, Inc. 
 
Banvel® and Basagran® trademarks of BASF Ag Products 
 
Buctril® trademarks of Bayer CropScience 
 
Prowl® trademark of BASF Ag Products 
 
©201X Syngenta 
 
Manufactured for: 
Syngenta Crop Protection, LLC 
P.O. Box 18300 
Greensboro, North Carolina 27419-8300 
 
Dual II Magnum SI 829 MAS 0714 AMEND-C JUN2021-CL – CM – 12/6/2022 
000100-00829.20210610C.Dual II Magnum SI-AMEND-JUN2021-CL.PDF