crop-chem-docs/corpus/epa_ppls/100-1732.md

# A23883 ST

- EPA Reg No: **100-1732**
- Registrant: SYNGENTA CROP PROTECTION, LLC
- Signal word: Caution
- Active ingredients: Picarbutrazox (0.34%); Thiamethoxam (16.8%); Fludioxonil (0.84%); Metalaxyl-M (2.52%); Azoxystrobin (0.67%); Sedaxane (0.84%)
- Label accepted: 2023-03-07
- Source PDF: https://www3.epa.gov/pesticides/chem_search/ppls/000100-01732-20230307.pdf

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Registration Notice Conditional v.20220527 
 
 
 
U.S. ENVIRONMENTAL PROTECTION AGENCY 
Office of Pesticide Programs 
Registration Division (7505T) 
1200 Pennsylvania Ave., N.W. 
Washington, D.C. 20460 
 
EPA Reg. Number: 
 
100-1732 
 
Date of Issuance: 
 
3/7/23 
NOTICE OF PESTICIDE: 
 X Registration 
 Reregistration 
 
Term of Issuance: 
Conditional 
 (under FIFRA, as amended) 
Name of Pesticide Product: 
A23883 ST 
 
Name and Address of Registrant (include ZIP Code): 
Syngenta Crop Protection, LLC 
P.O. Box 18300 
Greensboro, NC 27419 
 
Note: Changes in labeling differing in substance from that accepted in connection with this registration must be submitted to and a ccepted by the 
Registration Division prior to use of the label in commerce. In any correspondence on this product always refer to the above EPA registration number. 
 
On the basis of information furnished by the registrant, the above named pesticide is hereby registered 
under the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA). 
 
Registration is in no way to be construed as an endorsement or recommendation of this product by the 
Agency. In order to protect health and the environment, the Administrator, on his motion, may at any 
time suspend or cancel the registration of a pesticide in accordance with the Act. The acceptance of any 
name in connection with the registration of a product under this Act is not to be construed as giving the 
registrant a right to exclusive use of the name or to its use if it has been covered by others. 
 
 
This product is conditionally registered in accordance with FIFRA section 3(c)(7)(A). You must comply 
with the following conditions: 
 
1. Submit and/or cite all data required for registration/reregistration/registration review of your 
product under FIFRA when the Agency requires all registrants of similar products to submit such 
data. 
 
Continues page 2 
 
Signature of Approving Official: 
 
Shaja B. Joyner, Product Manager 20 
Fungicide-Herbicide Branch 
Registration Division 7505T 
 
 
Date: 
 
 3/7/23 
EPA Form 8570-6

Page 2 of 2 
EPA Reg. No. 100-1732 
Decision No. 583972 
 
 
2. The data requirements for storage stability and corrosion characteristics (Guidelines 830.6317 
and 830.6320) are not satisfied. You have 18 months from the date of registration to provide 
these data. 
 
3. Make the following label changes before you release the product for shipment: 
 
• Revise the EPA Registration Number to read, “EPA Reg. No. 100-1732.” 
 
4. Submit one copy of the final printed label for the record before you release the product for 
shipment. 
 
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 FIFRA 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) lists 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. 
If you fail to satisfy these data requirements, EPA will consider appropriate regulatory action including, 
among other things, cancellation under FIFRA section 6(e). Your release for shipment of the product 
constitutes acceptance of these conditions. A stamped copy of the label is enclosed for your records. 
 
The record for this product currently contains the following CSF(s): 
 
• Basic CSF dated 03/15/2022 
• Alternate CSF 1 dated 03/15/2022 
 
If you have any questions, please contact Lindsay DeMers via email at demers.lindsay@epa.gov. 
 
 
Enclosure: stamped “accepted” label

A23883 ST 
Page 1 
[MASTER] 
 
THIAMETHOXAM GROUP 4A INSECTICIDE 
MEFENOXAM GROUP 4 FUNGICIDE 
SEDAXANE GROUP 7 FUNGICIDE 
AZOXYSTROBIN GROUP 11 FUNGICIDE 
FLUDIOXONIL GROUP 12 FUNGICIDE 
PICARBUTRAZOX GROUP U17 FUNGICIDE 
A23883 ST 
 
Insecticide with Fungicides 
 
A seed treatment product for protection against damage from listed early-season insect pests 
and diseases of soybean 
 
Active Ingredients: 
Thiamethoxam
1 .......................................................................................................16.8% 
Mefenoxam2 ..............................................................................................................2.52% 
Fludioxonil3 ................................................................................................................0.84% 
Sedaxane4 .................................................................................................................0.84% 
Azoxystrobin5 .............................................................................................................0.67% 
Picarbutrazox6 ...........................................................................................................0.34% 
Other Ingredients: 77.99% 
Total: 100.00% 
 
1CAS No. 153719-23-4 
2CAS Nos. 70630-17-0 and 69516-34-3 
3CAS No. 131341-86-1 
4CAS No. 874967-67-6 
5CAS No. 131860-33-8 
6CAS No. 500207-04-5 
 
A23883 ST is a flowable concentrate for seed treatment containing 1.60 lb thiamethoxam, 
0.24 lb mefenoxam, 0.08 lb fludioxonil, 0.08 lb sedaxane, 0.06 lb azoxystrobin, and 0.03 lb 
picarbutrazox per gallon. 
 
KEEP OUT OF REACH OF CHILDREN. 
 
CAUTION 
 
See additional precautionary statements and directions for use in booklet. 
 
EPA Reg. No. 100-XXXX 
EPA Est. No. 
 
__________ 
Net Contents 
 
[Batch Code: _____ ] (For nonrefillables only.) 
 
03/07/2023
100-1732

A23883 ST 
Page 2 
TABLE OF CONTENTS 
 
1.0 FIRST AID 
2.0 PRECAUTIONARY STATEMENTS 
2.1 Hazards to Humans and Domestic Animals 
2.2 Personal Protective Equipment (PPE) 
2.3 User Safety Requirements 
2.4 User Safety Recommendations 
2.5 Environmental Hazards 
2.5.1 Pollinator Precautions 
2.5.2 Groundwater Advisory 
2.6 Physical and Chemical Hazards 
3.0 PRODUCT INFORMATION 
3.1 Resistance Management 
3.1.1 Insecticide Resistance Management 
3.1.2 Fungicide Resistance Management 
4.0 APPLICATION DIRECTIONS 
4.1 Tank Mixtures 
5.0 ROTATIONAL CROP RESTRICTIONS 
6.0 RESTRICTIONS 
7.0 SEED CONTAINER LABEL REQUIREMENTS 
8.0 SEED TREATMENT DIRECTIONS 
8.1 Soybean 
8.2 Soybean Treatment for Protection Against Seed Storage Pests 
9.0 STORAGE AND DISPOSAL 
10.0 CONDITIONS OF SALE AND LIMITATION OF WARRANTY AND LIABILITY

A23883 ST 
Page 3 
1.0 FIRST AID 
FIRST AID 
If swallowed • Call a poison control center or doctor immediately for treatment 
advice. 
• Have a person sip a glass of water if able to swallow. 
• Do not induce vomiting unless told to do so by a poison control 
center or doctor. 
• Do not give anything by mouth to an unconscious person. 
If on skin • Take off contaminated clothing. 
• Rinse skin immediately with plenty of water for 15-20 minutes. 
• Call a poison control center or doctor for treatment advice. 
Have the product container or label with you when calling a poison control center or 
doctor, or going for treatment. 
HOTLINE NUMBER 
For 24-Hour Medical Emergency Assistance (Human or Animal) 
Or Chemical Emergency Assistance (Spill, Leak, Fire or Accident), 
Call 
1-800-888-8372 
 
2.0 PRECAUTIONARY STATEMENTS 
2.1 Hazards to Humans and Domestic Animals 
 
CAUTION 
 
Harmful if swallowed. Harmful if absorbed through skin. Avoid contact with skin, eyes , or 
clothing. Wash thoroughly with soap and water after handling and before eating, drinking, 
chewing gum, using tobacco, or using the toilet. Remove and wash contaminated clothing 
before reuse. 
 
2.2 Personal Protective Equipment (PPE) 
Applicators and other handlers must wear: 
• Long-sleeved shirt and long pants 
• Chemical-resistant gloves made of barrier laminate, butyl rubber ≥14 mils, neoprene 
rubber ≥14 mils, nitrile rubber ≥14 mils, polyvinyl chloride (PVC) ≥14 mils, or Viton™ 
≥14 mils 
• Shoes plus socks

A23883 ST 
Page 4 
2.3 User Safety Requirements 
Follow manufacturer’s instructions for cleaning/maintaining PPE. If no such instructions for 
washables exist, use detergent and hot water. Keep and wash PPE separately from other 
laundry. 
2.4 User Safety Recommendations 
Users should: 
• Remove clothing/PPE immediately if pesticide gets inside. Then wash thoroughly 
and put on clean clothing. 
• 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. 
 
 
2.5 Environmental Hazards 
This pesticide is toxic to wildlife and freshwater and estuarine/marine fish and highly toxic to 
aquatic invertebrates. DO NOT contaminate water when disposing of equipment washwater 
or rinsate. Exposed treated seed may be hazardous to wildlife. 
2.5.1 Pollinator Precautions 
Thiamethoxam is highly toxic to bees exposed to direct treatment, and effects may be 
possible as a result of exposure to translocated residues in blooming crops. 
2.5.2 Groundwater Advisory 
Azoxystrobin can be persistent for several months or longer. Azoxystrobin, a degradate of 
azoxystrobin, and mefenoxam are known to leach through soil into groundwater under certain 
conditions as a result of label use. Fludioxonil and thiamethoxam have properties and 
characteristics associated with chemicals detected in groundwater. These chemicals may 
leach into groundwater if used in areas where soils are permeable, particularly where the 
water table is shallow, and may result in groundwater contamination. 
 
2.6 Physical and Chemical Hazards 
DO NOT mix or allow to come in contact with an oxidizing agent; a hazardous chemical 
reaction may occur.

A23883 ST 
Page 5 
DIRECTIONS FOR USE 
 
It is a violation of Federal Law to use this product in a manner inconsistent with its labeling. 
Use is permitted in commercial seed treatment facilities only. DO NOT use for at-plant 
applications (e.g., hopper box, planter box). This product is to be applied as a water-based 
slurry through standard slurry- or mist-type commercial seed treatment equipment. 
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. 
FAILURE TO FOLLOW DIRECTIONS, RESTRICTIONS, AND PRECAUTIONS ON THIS 
LABEL MAY RESULT IN CROP INJURY; POOR DISEASE CONTROL; AND/OR ILLEGAL 
RESIDUES. 
Treatment of highly mechanically scarred or damaged seed or seed known to be of low vigor 
and poor quality may result in reduced germination and/or reduction of seed and seedling 
vigor. Treat a quantity of seed using equipment similar to that planned for treating the total 
seed lot. Then conduct germination tests with a portion of this treated seed before 
committing the total seed lot to a selected seed treatment. 
Due to seed quality, crop or variety sensitivity, and seed storage conditions beyond the 
control of Syngenta, no claims are made to guarantee the germination of seed or propagating 
material for any crop seed treated with A23883 ST. 
 
Maximum usage when applying metalaxyl- and mefenoxam- containing products to the 
same crop within the same season: DO NOT apply more than the maximum yearly total 
application rate for the active ingredient as stated on the label of the product containing the 
lowest yearly total on that crop.

A23883 ST 
Page 6 
 
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 (WPS). 
DO NOT enter or allow worker entry into treated areas during the restricted-entry 
interval (REI) of 48 hours. Exception: If the seed is treated with the product and the 
treated seed is planted, 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: 
• Coveralls 
• Chemical-resistant gloves made of barrier laminate, butyl rubber ≥14 mils, nitrile rubber 
≥14 mils, neoprene rubber ≥14 mils, polyvinyl chloride (PVC) ≥14 mils, or Viton ≥14 mils 
• Shoes plus socks 
 
3.0 PRODUCT INFORMATION 
A23883 ST is a broad-spectrum seed treatment that consists of five fungicide active 
ingredients (azoxystrobin, fludioxonil, mefenoxam, picarbutrazox, and sedaxane) as well as 
one insecticide active ingredient (thiamethoxam). Each active ingredient has a different 
mode of action. This seed treatment protects against damage from listed early-season 
insects and soil-borne and seed-borne diseases of soybeans. 
 
Azoxystrobin fungicide is active against Rhizoctonia and Pythium spp., seed-borne white 
mold (Sclerotinia sclerotiorum) as well as other listed seed-borne diseases causing decay, 
damping-off and seedling blight. 
 
Fludioxonil fungicide protects against seed-borne and soil-borne Fusarium and Rhizoctonia 
spp. that cause seed decay, damping-off, and seedling blight. This active ingredient also 
provides protection from seed-borne Diaporthe-Phomopsis disease complex, sometimes 
referred to as pod and stem blight (caused by Phomopsis longicolla and Diaporthe 
phaseolorum). Fludioxonil also suppresses seed-borne Sclerotinia spp. 
 
Mefenoxam fungicide provides protection against Pythium damping-off and early-season 
Phytophthora.

A23883 ST 
Page 7 
Picarbutrazox provides early-season protection against Pythium and Phytophthora spp. that 
cause seed rot and damping-off. 
 
Sedaxane fungicide protects against damage from seed decay, seedling blight, and damping-
off caused by Rhizoctonia spp. 
 
Thiamethoxam protects against damage from listed insect pests. 
 
3.1 Resistance Management 
 
3.1.1 Insecticide Resistance Management 
For resistance management, please note that A23883 ST contains thiamethoxam, a Group 
4A insecticide. Any insect population may contain individuals naturally resistant to A23883 
ST and other Group 4A insecticides. The resistant individuals may dominate the insect 
population if this group of insecticides is used repeatedly in the same fields. Appropriate 
resistance-management strategies should be followed. 
 
Thiamethoxam is a systemic insecticide belonging to the neonicotinoid class of chemistry 
which includes nicotinic acetylcholine receptor (nAChR) agonists. 
 
To delay insecticide resistance, take the following steps: 
• Rotate the use of A23883 ST or other Group 4A insecticides within a growing season, or 
among growing seasons, with different groups that control the same pests. 
• Use tank mixtures with insecticides from a different group that is equally effective on the 
target pest when such use is permitted. DO NOT rely on the same mixture repeatedly for 
the same pest population. Consider any known cross-resistance issues (for the targeted 
pests) between the individual components of a mixture. In addition, consider the following 
recommendations provided by the Insecticide Resistance Action Committee (IRAC). 
o Individual insecticides selected for use in mixtures should be highly effective and 
applied at the rates at which they are individually registered for use against the target 
species. 
o Mixtures with components having the same IRAC mode of action classification are not 
recommended for insect resistance management. 
o When using mixtures, consider any known cross-resistance issues between the 
individual components for the targeted pest(s). 
o Mixtures become less effective if resistance is already developing to one or both active 
ingredients, but they may still provide pest management benefits. 
o The insect resistance management benefits of an insecticide mixture are greatest if 
the two components have similar periods of residual insecticidal activity. Mixtures of 
insecticides with unequal periods of residual insecticidal activity may offer an insect 
resistance management benefit only for the period where both insecticides are active. 
• Adopt an integrated pest management program for insecticide use that includes scouting; 
uses historical information related to pesticide use, crop rotation, and record keeping; and 
considers cultural, biological, and other chemical control practices.

A23883 ST 
Page 8 
• Monitor after application for unexpected target pest survival. If the level of survival 
suggests the presence of resistance, consult with your local university specialist or 
certified pest control advisor. 
• Contact your local extension specialist or certified crop advisors for any additional 
pesticide resistance management and/or IPM recommendations for the specific site and 
pest problems in your area. 
 
For additional information on Insect Resistance Management: 
• Contact Syngenta representatives at 1-866-796-4368 
• Visit the Insecticide Resistance Action Committee (IRAC) on the web at: 
http://www.irac-online.org
 
 
Syngenta encourages responsible product stewardship to ensure effective long-term control 
of the insect pests on this label. 
 
3.1.2 Fungicide Resistance Management 
For resistance management, please note that A23883 ST contains mefenoxam, a Group 4 
fungicide; sedaxane, a Group 7 fungicide; azoxystrobin, a Group 11 fungicide; fludioxonil, a 
Group 12 fungicide; and picarbutrazox, a Group U17 fungicide. Any fungal population may 
contain individuals naturally resistant to A23883 ST and other Group 4, Group 7, Group 11, 
Group 12, or Group U17 fungicides. A gradual or total loss of pest control may occur over 
time if these fungicides are used repeatedly in the same fields. Appropriate resistance-
management strategies should be followed. 
 
Mefenoxam belongs to the phenylamide class of chemistry which interferes with fungal RNA 
synthesis. Sedaxane is a succinate dehydrogenase inhibitor (SDHI) and belongs to the 
carboxamide class of chemistry which disrupts cellular respiration and energy generation. 
Azoxystrobin belongs to the strobilurin class of chemistry which disrupts cellular respiration 
and energy generation. Fludioxonil belongs to the phenylpyrrole class of chemistry which 
interferes with osmotic signal transduction. Picarbutrazox belongs to the tetra-zolyloximes 
class of fungicides and is not known to be cross-resistant with fungicides that have different 
modes of action. 
 
To delay fungicide resistance, take one or more of the following steps: 
• Rotate the use of A23883 ST or other Group 4, Group 7, Group 11, Group 12, or Group 
U17 fungicides within a growing season sequence with different groups that control the 
same pathogens. 
• Use tank mixtures with fungicide from a different group that are equally effective on the 
target pest when such use is permitted. Use at least the minimum application rate as 
labeled by the manufacturer. 
• Adopt an integrated disease management program for fungicide use that includes 
scouting, uses historical information related to pesticide use, and crop rotation, and which 
considers host plant resistance, impact of environmental conditions on disease 
development, disease thresholds, as well as cultural, biological and other chemical control 
practices. 
• Where possible, make use of predictive disease models to effectively time fungicide 
applications. Note that using predictive models alone is not sufficient to manage 
resistance.

A23883 ST 
Page 9 
• Monitor treated fungal populations for resistance development. 
• Contact your local extension specialist or certified crop advisor for any additional pesticide 
resistance-management and/or IPM recommendations for specific crop and pathogens. 
• For further information or to report suspected resistance contact Syngenta at 1-866-
Syngent(a) (866-796-4368). You can also contact your pesticide distributor or university 
extension specialist to report resistance. 
 
Syngenta encourages responsible product stewardship to ensure effective long-term control 
of the fungal diseases on this label. 
 
4.0 APPLICATION DIRECTIONS 
Important: Always recirculate A23883 ST thoroughly before using. 
 
Follow the manufacturer’s application instructions for the seed treatment equipment being 
used. 
 
The typical density of A23883 ST is 9.51 pounds per gallon. Consult the manufacturer of the 
application equipment you plan to use for suitability for this application and for instructions on 
operation and calibration of the equipment. Follow the manufacturer’s application instructions 
for the seed treatment equipment being used. 
 
Apply A23883 ST as a water-based slurry utilizing standard slurry seed treatment equipment 
that provides uniform seed coverage. Seed treaters with atomizers or spinning discs are 
highly recommended for better product coverage on the seed. Uneven or incomplete seed 
coverage may not give the desired level of insect or disease control. Thoroughly mix the 
specified amount of A23883 ST into the required amount of water or liquid inoculant for the 
slurry treater and dilution rate to be used. 
Certain crops require addition of inoculants when the seed is treated or planted. A23883 ST 
is compatible with several liquid inoculant products. Consult the maker of the inoculant 
product and a Syngenta Crop Protection representative for directions before applying A23883 
ST with inoculants. 
Continuous agitation or mixing of the slurry mixture is necessary to prevent settling out of the 
solution. Clean out any unused product from the treater after treating or maintain constant 
agitation if the leftover slurry will be maintained overnight. 
Allow seed to dry before bagging. 
Follow planter manufacturer’s specifications for use of talc or other hopper box additives at 
planting. Seed must be completely dry before adding to planter.

A23883 ST 
Page 10 
4.1 Tank Mixtures 
A23883 ST mixes easily with water and other water-based seed treatments manufactured by 
Syngenta. When mixing with products from other manufacturers, test the compatibility prior 
to use by conducting a jar test: mix all intended seed treatments with a proportional amount 
of water to achieve the desired slurry mixture in a clear glass container. Mix well and allow 
mixture to sit for one hour. Remix and observe for incompatibility. 
It is the pesticide user’s responsibility to ensure that all products are registered for the 
intended use. Read and follow the applicable restrictions and limitations and directions for 
use on all product labels involved in tank mixing. Users must follow the most restrictive 
directions for use and precautionary statements of each product in the tank mixture.

A23883 ST 
Page 11 
5.0 ROTATIONAL CROP RESTRICTIONS 
• In the event of a crop failure or harvest of a crop grown from seed treated with A23883 
ST, the field may be replanted according to the following schedule: 
 
Plantback Interval Table 
Immediate Plantback Interval Minimum 30-Day Plantback Interval 
Corn (Field, Pop, Seed, Sweet) 
Soybean 
 
Alfalfa 
Brassica (Cole) Leafy Vegetables Crop 
Group 5 
Canola 
Cereal Grains Crop Group 15, except Corn 
Cotton 
Cucurbit Vegetables Crop Group 9 
Fruiting Vegetables Crop Group 8 
Leafy Vegetables Crop Group 4 
Legume Vegetables (Succulent or Dried) 
Crop Group 6 
Mint: Peppermint and Spearmint 
Oilseeds: Borage, Crambe, Flax Seed, and 
Mustard Seed, Safflower, Sunflower 
Onion, Dry Bulb 
Peanut 
Root and Tuber Vegetables Crop Group 1 
Strawberry 
Tobacco 
• For all other crops, the minimum plantback interval is 120 days from the date of planting 
seeds treated with A23883 ST. A cover crop, other than the crops listed above, planted 
for erosion control or soil improvement may be planted sooner than the 120-day interval; 
however, the crop may not be grazed or harvested for food or feed.

A23883 ST 
Page 12 
6.0 RESTRICTIONS 
• DO NOT use for at-plant applications (e.g., hopper box, planter box). This product is to be 
applied as a water-based slurry through standard slurry- or mist-type commercial seed 
treatment equipment. 
• DO NOT apply this product in a way that will contact workers or other persons, either 
directly or through drift. 
• DO NOT use for feed, food, or oil purposes. 
• Store treated seed away from feed and foodstuffs. 
• DO NOT allow children, pets, or livestock to have access to treated seed. 
• Wear long-sleeved shirt, long pants and chemical resistant gloves when handling treated 
seed. 
• Treated seeds exposed on soil surface may be hazardous to wildlife. Cover or collect 
treated seeds spilled during loading or planting. 
• Treated seed must be planted into the soil at a depth greater than 1 inch. 
• Dispose of all excess treated seed. Leftover treated seed may be double sown around 
the headland or buried away from water sources in accordance with local requirements. 
• DO NOT contaminate water bodies when disposing of planting equipment washwaters. 
• Dispose of seed packaging in accordance with local requirements. 
• DO NOT use at a rate that will result in more than 0.266 lb thiamethoxam/A (120 g/A) per 
calendar year, regardless of type of application (seed treatment, soil, or foliar). DO NOT 
use at a rate that will result in more than 0.083 lb thiamethoxam/A (37.8 g/A) per calendar 
year as a seed treatment application. 
• DO NOT apply more than 0.003 lb azoxystrobin/A (1.5 g /A) per calendar year as a seed 
treatment application. 
• DO NOT apply more than 0.004 lb fludioxonil/A (2.0 g/A) per calendar year as a seed 
treatment application. 
• DO NOT apply more than 0.013 lb mefenoxam/A (5.7 g/A) per calendar year as a seed 
treatment application. 
• DO NOT apply more than 0.004 lb sedaxane/A (2.0 g/A) per calendar year as a seed 
treatment application. 
• DO NOT apply more than 0.017 lb ai/A (7.5 g ai/A) per calendar year of picarbutrazox-
containing products as a seed treatment. 
• Soybean seeds treated with this product contain 0.076 mg thiamethoxam/seed, 0.003 mg 
azoxystrobin/seed, 0.004 mg fludioxonil, 0.012 mg mefenoxam/seed, 0.004 mg 
sedaxane/seed, and 0.0015 mg picarbutrazox/seed. 
• DO NOT apply a neonicotinoid insecticide within 45 days of planting soybean seeds 
treated with this product. 
• This treated seed may be planted on the same acres up to 2 times per year.

A23883 ST 
Page 13 
7.0 SEED CONTAINER LABEL REQUIREMENTS 
The Federal Seed Act requires that containers of treated seeds must be labeled with the 
following statements: 
• This seed has been treated with azoxystrobin, fludioxonil, sedaxane, mefenoxam, and 
picarbutrazox fungicides and thiamethoxam insecticide. 
• DO NOT use for feed, food, or oil purposes. 
The U.S. Environmental Protection Agency requires the following statements on containers 
containing seed treated with A23883 ST: 
• Store treated seed away from feed and foodstuffs. 
• DO NOT allow children, pets, or livestock to have access to treated seed. 
• Wear long-sleeved shirt, long pants and chemical resistant gloves when handling treated 
seed. 
• Treated seeds exposed on soil surface may be hazardous to wildlife. Cover or collect 
treated seeds spilled during loading or planting. 
• Treated seed must be planted into the soil at a depth greater than 1 inch. 
• Dispose of all excess treated seed. Leftover treated seed may be double sown around 
the headland or buried away from water sources in accordance with local requirements. 
• Excess treated seed may be used for ethanol production only if (1) by-products are not 
used for livestock feed and (2) no measurable residues of pesticide remain in the ethanol 
by-products that are used for agronomic practice. 
• DO NOT contaminate water bodies when disposing of planting equipment washwaters. 
• Dispose of seed packaging in accordance with local requirements. 
• Groundwater Advisory: Azoxystrobin, a degradate of azoxystrobin, and mefenoxam are 
known to leach through soil into groundwater under certain conditions as a result of label 
use. Fludioxonil and thiamethoxam have properties and characteristics associated with 
chemicals detected in groundwater. These chemicals may leach into groundwater if used 
in areas where soils are permeable, particularly where the water table is shallow. 
• Pollinator Precautions: Thiamethoxam is highly toxic to bees exposed to direct 
treatment, and effects may be possible as a result of exposure to translocated residues in 
blooming crops. 
• DO NOT use at a rate that will result in more than 0.266 lb thiamethoxam/A (120 g/A) per 
calendar year, regardless of type of application (seed treatment, soil, or foliar). DO NOT 
use at a rate that will result in more than 0.083 lb thiamethoxam/A (37.8 g/A) per calendar 
year as a seed treatment application. 
• DO NOT apply more than 0.003 lb azoxystrobin/A (1.5 g /A) per calendar year as a seed 
treatment application. 
• DO NOT apply more than 0.004 lb fludioxonil/A (2.0 g/A) per calendar year as a seed 
treatment application. 
• DO NOT apply more than 0.013 lb mefenoxam/A (5.7 g/A) per calendar year as a seed 
treatment application. 
• Maximum usage when applying metalaxyl- and mefenoxam- containing products to 
the same crop within the same season: DO NOT apply more than the maximum yearly 
total application rate for the active ingredient as stated on the label of the product 
containing the lowest yearly total on that crop.

A23883 ST 
Page 14 
• DO NOT apply more than 0.004 lb sedaxane/A (2.0 g/A) per calendar year as a seed 
treatment application. 
• DO NOT apply more than 0.017 lb ai/A (7.5 g ai/A) per calendar year of picarbutrazox-
containing products as a seed treatment. 
• Soybean seeds treated with this product contain 0.076 mg thiamethoxam/seed, 0.003 mg 
azoxystrobin/seed, 0.004 mg fludioxonil, 0.012 mg mefenoxam/seed, 0.004 mg 
sedaxane/seed, and 0.0015 mg picarbutrazox/seed. 
• DO NOT apply a neonicotinoid insecticide within 45 days of planting soybean seeds 
treated with this product. 
• This treated seed may be planted on the same acres up to 2 times per year. 
• In the event of a crop failure or harvest of a crop grown from seed treated with A23883 
ST, the field may be replanted according to the following schedule: 
Plantback Interval Table 
Immediate Plantback Interval Minimum 30-Day Plantback Interval 
Corn (Field, Pop, Seed, Sweet) 
Soybean 
 
Alfalfa 
Brassica (Cole) Leafy Vegetables Crop 
Group 5 
Canola 
Cereal Grains Crop Group 15, except Corn 
Cotton 
Cucurbit Vegetables Crop Group 9 
Fruiting Vegetables Crop Group 8 
Leafy Vegetables Crop Group 4 
Legume Vegetables (Succulent or Dried) 
Crop Group 6 
Mint: Peppermint and Spearmint 
Oilseeds: Borage, Crambe, Flax Seed, and 
Mustard Seed, Safflower, Sunflower 
Onion, Dry Bulb 
Peanut 
Root and Tuber Vegetables Crop Group 1 
Strawberry 
Tobacco 
• For all other crops, the minimum plantback interval is 120 days from the date of planting 
seeds treated with A23883 ST. A cover crop, other than the crops listed above, planted 
for erosion control or soil improvement may be planted sooner than the 120-day interval; 
however, the crop may not be grazed or harvested for food or feed.

A23883 ST 
Page 15 
 
8.0 SEED TREATMENT DIRECTIONS 
8.1 Soybean 
Target Pests / Diseases 
Use Rate 
fl oz product per 
100 lb of seed 
(fl oz product per 
140,000 seeds unit) 
grams ai per 100 kg 
of seed mg ai per seed 
 
Early-season Insect Pests 
 
Aphids, Bean leaf beetle, 
Grape colaspis, Leaf 
miners, Leaf hoppers, 
Mexican bean beetle, 
Seed corn maggot, Three-
cornered alfalfa hopper, 
Thrips, White grubs, and 
Wireworm 
 
Early-season Fungal 
Diseases 
 
Seed rot/pre-emergence 
damping-off, post-
emergence damping-off, 
and seedling blight caused 
by Fusarium, Pythium, and 
Rhizoctonia spp. 
 
Seedling root rot caused by 
Fusarium spp. 
 
Pod and stem blight caused 
by seed-borne Diaporthe-
Phomopsis disease 
complex 
 
Early-season root rot and 
damping-off caused by 
Phytophthora spp. 
 
Suppresses seed-borne 
Sclerotinia caused by 
Sclerotinia sclerotiorum 
 
 
4.0 
 
 
(1.87 fl oz/140,000 
seeds) 
 
2 g Azoxystrobin 
2.5 g Fludioxonil 
7.5 g Mefenoxam 
1 g Picarbutrazox 
2.5 g Sedaxane 
50 g Thiamethoxam 
65.5 g TOTAL 
 
0.0030 mg Azoxystrobin 
0.0038 mg Fludioxonil 
0.0113 mg Mefenoxam 
0.0015 mg Picarbutrazox 
0.0038 mg Sedaxane 
0.0756 mg Thiamethoxam 
0.099 mg TOTAL 
The product rates per 100 lb seed and per 140,000 seed are based on an average seed weight of 3,000 
soybeans/lb. If treating seed with a different average seed weight, recalculate the appropriate product 
use rate 
USE RESTRICTIONS 
• Refer to Section 7.0 for additional product use restrictions.

A23883 ST 
Page 16 
8.2 Soybean Treatment for Protection Against Seed Storage Pests 
Target Pests 
Use Rate 
Fl oz product per 100 
lb of seed 
(Fl oz product per 
140,000 seeds unit) 
Grams ai per 100 kg 
of seed Mg ai per seed 
 
Seed Storage Pests 
Indian Meal Moth 
(Plodia interpunctella) 
 
Rice Weevil 
(Sitophilus oryzae) 
 
Red Flour Beetle 
(Tribolium castaneum) 
 
Lesser Grain Borer 
(Rhyzopertha dominica) 
 
4.0 
 
 
(1.87 fl oz/140,000 
seeds) 
 
2 g Azoxystrobin 
2.5 g Fludioxonil 
7.5 g Mefenoxam 
1 g Picarbutrazox 
2.5 g Sedaxane 
50 g Thiamethoxam 
65.5 g TOTAL 
 
0.0030 mg Azoxystrobin 
0.0038 mg Fludioxonil 
0.0113 mg Mefenoxam 
0.0015 mg Picarbutrazox 
0.0038 mg Sedaxane 
0.0756 mg Thiamethoxam 
0.099 mg TOTAL 
• Provides protection against listed seed storage pests when applied prior to storage 
• If the seed to be treated has existing infestations of stored grain insects, fumigate the seed with a 
registered product approved for such use prior to treated with A23883 ST and bagging. 
USE RESTRICTIONS 
• Refer to Section 7.0 for additional product use restrictions.

A23883 ST 
Page 17 
9.0 STORAGE AND DISPOSAL 
STORAGE AND DISPOSAL 
Do not contaminate water, food or feed by storage or disposal. 
Pesticide Storage 
Store in a cool, dry place. Storage for extended periods above 90°F is not recommended. 
Store in original containers only. Keep container closed when not in use. Do not store near 
food or feed. In case of spill on floor or paved surfaces, mop and remove to chemical waste 
storage area until proper disposal can be made if product cannot be used according to the 
label. 
Pesticide Disposal 
Pesticide wastes are toxic. Improper disposal of excess pesticide, spray mixture, or rinsate is 
a violation of Federal Law. If these wastes cannot be disposed of by use according to label 
instructions, contact your State Pesticide or Environmental Control Agency, or the Hazardous 
Waste Representative at the nearest EPA Regional Office for guidance. 
Container Handling [(less than or equal to 5 gallons)] 
Non-refillable container. Do not reuse or refill this container. Triple rinse container (or 
equivalent) promptly after emptying. Triple rinse as follows: Empty the remaining contents 
into application equipment or a mix tank and drain for 10 seconds after the flow begins to 
drip. Fill the container ¼ full with water and recap. Shake for 10 seconds. Pour rinsate into 
application equipment or a mix tank or store rinsate for later use or disposal. Drain for 10 
seconds after the flow begins to drip. Repeat this 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 approved by state and local authorities. 
Container Handling [(greater than 5 gallons)] 
Non-refillable container. Do not reuse or refill this container. Triple rinse container (or 
equivalent) promptly after emptying. Triple rinse as follows: Empty the remaining contents 
into application equipment or a mix tank. Fill the container ¼ full with water. Replace and 
tighten closures. Tip container on its side and roll it back and forth, ensuring at least one 
complete revolution, for 30 seconds. Stand the container on its end and tip it back and forth 
several times. Turn the container over onto its other end and tip it back and forth several 
times. Empty the rinsate into application equipment or a mix tank or store rinsate for later 
use or disposal. Repeat this 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 
approved by state and local authorities. 
Container Handling [(greater than 5 gallons)] 
Refillable container. Refill this container with pesticide 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 approved by state and local authorities. 
CONTAINER IS NOT SAFE FOR FOOD, FEED, OR DRINKING WATER.

A23883 ST 
Page 18 
10.0 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. 
 
SYNGENTA and Seller offer this product, and Buyer and User accept it, subject to the 
foregoing Conditions of Sale and Limitation of Warranty and Liability, which may not be 
modified except by written agreement signed by a duly authorized representative of 
SYNGENTA.

A23883 ST 
Page 19 
The ALLIANCE FRAME 
the SYNGENTA Logo, and the PURPOSE ICON 
are Trademarks of a Syngenta Group Company 
 
Viton™ is a trademark of The Chemours Company FC, LLC 
 
©20XX Syngenta 
 
 
For non-emergency (e.g. current product information), call 
Syngenta Crop Protection at 1-866-796-4368. 
 
 
Manufactured for: 
Syngenta Crop Protection, LLC 
P.O. Box 18300 
Greensboro, North Carolina 27419-8300 
 
 
 
 
A23883 ST XXXX NEW-C 0422-CL – jeb – 03/02/2023 
000100-XXXXX.20220414C.A23883_ST_NEW_APR2022-CL.pdf