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docker: production image + Gitea Actions for monthly refresh
Image rebuild (skip scrape) / build (push) Failing after 1h37m12s
Details

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Dockerfile: self-contained image with corpus + Chroma + BM25 baked
in. Drawbar's compose pulls + runs without volume mounts. Built from
sources.json (labels schema), PRODUCT_NAME=crop_chem by default,
HYBRID_SEARCH=true (always-on for production quality). RERANK_URL +
OLLAMA_URL get set at compose time.

.gitea/workflows/refresh.yml: monthly cron (1st @ 06:00 UTC) does
full scrape → reindex → image push. Scrapes Bayer (~30 min) +
EPA PPLS row-crop filtered (~7h). Skips reindex+push if no corpus
diff. Tags pushed: :latest, :<sha12>, :corpus-<YYYY.MM.DD>.

.gitea/workflows/image-only.yml: on-demand or auto on code-only
pushes to main (paths: docs_mcp/, rag/, scrape/, requirements.txt,
Dockerfile, sources.json). Reindexes from committed corpus, builds
image, pushes. ~10 min vs ~9h full refresh.

.gitignore: corpus/ now COMMITTED (4,159 labels, 265 MB of .md +
sidecars). Lets image-only.yml rebuild indexes without re-scraping.
chroma/ + bm25/ still gitignored (regenerable binary indexes).

.dockerignore: drops venv, eval results, PLAN/README/CLAUDE.md,
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explicitly NOT in dockerignore (those go INTO the image).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
Justin Paul
2026-05-24 12:32:41 -04:00
parent 1a45280e45
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# OPTION CORN HERBICIDE
- EPA Reg No: **264-685**
- Registrant: BAYER CROPSCIENCE, LLC
- Signal word: Caution
- Active ingredients: Foramsulfuron (35%)
- Label accepted: 2008-04-18
- Source PDF: https://www3.epa.gov/pesticides/chem_search/ppls/000264-00685-20080418.pdf
---
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
WASHINGTON, D.C. 20460
Nang-Ly Chow, Ph.D.
Registration Manager
Bayer CropScience (BSC)
2 T.W. Alexander Drive PO Box 12014
Research Triangle Park, N.C. 27709
OFFICE OF
I'REVENTION. PESTICIDES AND
TOXlC SUBSTANCES
. RE: Notification to update label under the PR Notice 2007-4
EPA Reg No.: 264-685
Date of Submission: March 10, 2008
Dear Dr. Chow:.
The Agency is in receipt of your Application for Pesticide Notification under Pesticide
Registration Notice (PRN) 98-10 dated March 10, 2008, for Option Corn Herbicide. The
Registration Division (RD) has conducted a review of this request for its applicability under
PRN 98-10 and finds that the actions requested fall within the scope ofPRN 98-10. The label
submitted with the application has been stamped "Notification" and will be placed in our
records.
If you have any questions, please call me directly at 703-305-6249 or Joyce Edwards of
my staff at 703-308-5479.
Sincerely,
~
Linda Arrington
Notifications & Minor Formulations,Team Leader
Registration Division (7505P)
Office of Pesticide Programs
APlease read instructions on reverse before completing form. d OMS N 2070 0060 A Form Approve . o. - . \pprova expires 05-31-98
United States 0 Registration OPP Identifier Number
e EPA
Environmental Protection Agency 0 Amendment
... Washington, DC 20460 ~ Other
Application for Pesticide - Section I
1. Company/Product Number 2. EPA Product Manager 3. Proposed Classification
264-685 Mr. James Tompkins
4. Company/Product (Name) 'PM Team 25 o None o Restricted
Option Corn Herbicide (Registration Division)
5. Name and Address of Application (/nc/ude ZIP Code) 6. Expedited Review. In accordance with FIFRA Section 3{c){3)
Bayer CropScience (BCS) (b)(i), my product is similar or identical in composition and labeling
PO Box 12014,2 Alexander Drive, to:
Research Triangle Park, NC 27709
EPA Reg. No.
Product Name
o Check if this is a new address
Section -II
o Amendment - Explain below. 0 Agency letter dated
o Resubmission in response to Agency letter dated ___ 0 "Me Too· Application. 0 Other - Explain below.
o Notification - Explain below.
Exelanation: Use additional pagels) if necessary. (Sect. I and II.):
Submit the Application of Pesticide Notification under PR Notice 2007-4 for Option Com Herbicide (Ref. The Final
Rule for the Standards for Pesticide Container and Containment, August 16, 2006) - for adding the required labelling
under Container Disposal (page 2 of the label)
1. Material This Product Will Be Packaged In:
Child-Resistant Packaging Unit Packaging Water Soluble Packaging 2. T{pe of C,ntainer
DYes DYes DYes Metal
o No o No o No 0' Plastic
I I Glass
I I Paper * Certification must be If "Yes", Unit No. per If "Yes" No. per
submitted Packaging wgt. container Package wgt container I I Other (Specify)
L I
3. Location of Net Contents Information 4. Size(s) Retail Container- 5. Location of Label Directions
o Label o Container
,
c::::J On Label
30 fluid ounce
0' (per plastic bottle) On Labeling accompanying product
6. Manner in Which Label is Affixed to Product
c::::::::J Lithograph 0 Other
0' Paper glued c:::::::J Stenciled
Section -IV
1. Contact PointjCol77f1lete items directlY' below for identification of individual to be contacted, if necessary, to orocess this application.)
Name Title Phone: 919-549-2147;
Nang-Ly Chow, Ph.D. Registration Manager Fax: 919-549-2545
Certification 6. Date Application
I certify that the statements I have made on this form and all attachments thereto are true. accurate and complete. I acknowledge Received
that any knowingly false or misleading statement may be punishable by fine or imprisonment or both under applicable (Stamped) law.
2. Signature 3. Title: EPA Form 8570-1 (Rev. 8-94)
rJ fA. "'4' (/-f( (~
DIFonn 8570-1 • PROGRESS Amend _11_
Registration Manager IO·04.doc
4. Typed Name: Nang-Ly Chow, Ph.D. 5. Date: March 10, 2008
" EPA Form 8570-1 (Rev. 8-94) PrevIous editions are obsolete. .. White - EPA File Copy (ongmal) Yellow - Applicant Copy
APlease read insfructions on reverse be are completing form. Form Approved. OMS No. 2070-0060. Approval expires 05-31-98
&EPA
United States
Environmental Protection Agency
Washington, DC 20460
OPP Identifier Number
o Registration
o Amendment
o Other
Application for Pesticide - Section I
1. Company/Product Number
264-685
4. Company/Product (Name)
Option Corn Herbicide
5. Name and Address of Application (Include ZIP Code)
Bayer CropScience (BCS)
PO Box 12014, 2 Alexander Drive,
Research Triangle Park, NC 27709
o Check if this is a new address
o Amendment - Explain below.
D Resubmission in response to Agency letter dated __
o Notification - Explain below.
2. EPA Product Manager
Mr. James Tompkins
PM Team 25
(Registration Division)
3. Proposed Classification
o None o Restricted
6. Expedited Review. In accordance with FIFRA Section 3(c)(3)
(b)(i), my product is similar or identical in composition and labeling
to:
EPA Reg. No. _______________ _
Product Name _________________ _
Section -II
o
D
Agency letter dated
"Me Too" Application. o Other - Explain below.
Explanation: Use additional page(s) if necessary. (Sect. I and II.):
Submit the Application of Pesticide Notification under PR Notice 2007-4 for Option Corn Herbicide (Ref.
The Final Rule for the Standards for Pesticide Container and Containment, August 16, 2006) - for adding
the required labelling under Container Disposal (page 2 of the label)
1. Material This Product Will Be Packaged In:
Child-Resistant Packaging
DYes
o No
• Certification must be
submitted
Unit Packaging
DYes
o No
If "Yes", Unit
Packaging wgt.
3. Location of Net Contents Information
D Label D Container
I
6. Manner in Which Label is Affixed to Product
No. per
container
Water Soluble Packaging
DYes
o No
If "Yes"
Package wgt
I
No. per
container
4. Size(s) Retail Container
~I ==:::' Lithograph
I , Paper glued
Section -IV
2. ype of Ctntainer
r==~ Metal
:=1 =~, Plastic
1:= =~I Glass
I I Paper
:=, ===:1 Other (Specify)
5. Location of Label Directions
I , On Label
I I On Labeling accompanying product
o Other __________ _
.I I Stenciled
1. Contact Point (Complete items directly below for identification of individual to be contacted, if necessary, to process this applicaiion.l v
Name Title:; Pnon§;: 919-5q.!:J-21'4~7~;---t
Nang-Ly Chow, Ph.D. Registration Manager :: FaX: ~ 919-549 12545
<)
','\."\"'1".1,
Certification " 6. l?ate Ap~lication
I certify that the statements I have made on this form and all attachments thereto are true, accurate and complete. I acknowledge I <) v Received.. c· <~
that any knowingly false or misleading statement may be punishable by fine or imprisonment or both under applicable law. Co C " ,. '. (Stalhp<e_~t
:.: '-J
1-2-. -S-ig-n-a-tu-r-e-------------------t-- 3-. ~T~it~'e-: ------------,.-:-: .. ,...;" cE~~ Form 8~!?~J,(Rev. 8-94)
4. Typed Name: Nang-Ly Chow, Ph.D.
EPA Form 8570-1 (Rev. 8-94) PrevIous editions are obsolete.
Registration Manager
5. Date: March 1 0, 200~
l' L.
DlForm ~57[)·1 ,.P:;CG::<.ESS Amend -11-
IO-04.doc
.. '''-" I.'
White - EPA File Copy (original) Yellow - Applicant Copy
Bayer Crop Science
March 10, 2008
Document Processing Desk (NOTIF) ,
Office of Pesticide Program (H7504P)
U.S. EPA, Room S4900
One Potomac Yard
Arlington, VA 22202 -4525
ATTN: Mr. James Tompkins (PM 25)
Registration Division (7505P)
Subject: Option@ Com Herbicide (Reg. No.: 264-685): Submission of the Application
of Pesticide Notification under PR Notice 2007-4 (Ref. The Final Rule for the
Standards for Pesticide Container and Containment, August 16, 2006 )
Dear Mr. Tompkins:
Bayer CropScience herein submits the NOTIFICATION application for Option Com
Herbicide (Reg. No.: 264-685), the water dispersible granule (WDG) formulated product
containing foramsulfuron as the active ingredient. The Notification is to comply with the
label language required by the new regulation in 40 CFR part 156 established by the Final
Rule "Pesticide Management and Disposal; Standards for Pesticide Container and
Containment" (71 FR 47330, August 16, 2006). Based on the Guidance issued under the
PR Notice 2007-4 and the product-specific information for Option, we added the following
"Container Disposal" labeling (see Section for "Storage and Disposal"; page 2):
• "Non refillable container. Do not reuse or refill this container. Offer for recycling if
available. Triple rinse container (or equivalent) promptly after emptying. Triple rinse
as follows: empty remaining contents into application equipment or a mix tank. Fill the
container I,4 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 ..... "
" e,
t.' "'l>U (., c ...
The Notification is based on the submitted final Option Com Herbicide labiil (code: Ma~t(";' c.
- 9/5/2007) in accordance with the Sep-5-2007 Agency letter that approves:th~)]~w us~( l~:'
labeling for sweet com and popcorn. " (
1, V i (~I....
Enclosed are three copies of the revised Option label, with the EPA Form ~~7g}. For the
Electronic Labeling Initiative, we also include the CD copy with the proper identificatitJl1"',
This notification is consistent with the provisions of PR Notice 95-2 and EPA regulatiQ;s ~ ,
OPTION Com Herbicide
Notification per PRN 2007-4
March 10,2008
Page 2
at 40 CFR §152.46, and no other changes have been made to the labeling or the
Confidential Statement of Formula for these products. I understand that it is a violation of
18 U.S.C. Section 1001 to willfully make any false statementJo EPA. I further understand
that if this notification is not consistent with the terms of PR Notice 95-2 and 40 CFR
§ 152.46, these products may be in violation of FIFRA and I may be subjected to
enforcement action and penalties under Section 12 and 14 of FIFRA.
We thank the Agency for approving the Notification and providing us a confirmation
record. Please contact me at nang-Iy.chow@bayercropscience.com or via phone at 919-
549-214 7 if you should have further questions.
Sincerely,
~lA"'1' J-r.r (~
Nang-Ly Chow, Ph.D.
Registration Manager
With Enclosure
OPTION WOG - NOTlFICATIlON -Mar IO-200X.doc
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Option® Corn Herbicide
A Herbicide for the Control of Annual and Perennial Grass and Broadleaf Weeds in Field Corn,
Sweet Corn and Popcorn.
ACTIVE INGREDIENTS: Foramsulfuron (CAS Number 173159-57-4) ........................................................................................ 35.0%
INERT INGREDIENTS: ................................................................................................................................................................ 65.00/0
This product is a water dispersible granule containing 35% of total active ingredients by weight. TOTAL: 100.0%
EPA Reg No. 264-685 E.P.A. Est. No.
KEEP OUT OF REACH OF CHILDREN
CAUTION
Si usted no entiende la etiqueta, busque a alguien para que se la explique a usted en detalle.
(If you do not understand the label, find someone to explain it to you in detail.)
For MEDICAL And TRANSPORTATION Emergencies ONLY Call 24 Hours A Day 1-800-334-7577
For PRODUCT USE Information Call 1-866-99BAYER (1-866-992-2937)
FIRST AID
IF SWALLOWED: • Call a poison control center or doctor immediately for treatment advice.
• Have 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. c· 0
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Do not give anything by mouth to an unconscious person.
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IF IN EYES: Hold eye open and rinse slowly and gently with water for 15-20 minutes.
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• Remove contact lenses, if present, after the first 5 minutes, then continue rinsiri,g ey,~. 0
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• Call a poison control center or doctor for treatment advice. 0 0 ("
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IF ON SKIN OR Take off contaminated clothing.
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Rinse skin immediately with plenty of water for 15 - 20 minutes.
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• Call a poison control center or doctor for treatment advice.
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For MEDICAL Emergencies Call 24 Hours A Day 1-800-334-7577.
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Have the product container or label with you when calling a~oison control center or doctor or going for treatment.
PRECAUTIONARY STATEMENTS
CAUTION
HAZARD TO HUMANS AND DOMESTIC ANIMALS
Harmful if swallowed. Causes mode.rate eye irritation. Avoid contact with eyes, skin or clothing. Prolonged or frequently repeated skin
contact may cause allergic reaction in some individuals.
PERSONAL PROTECTIVE EQUIPMENT (PPE)
Some materials that are chemical-resistant to this product are listed below. If you want more options, follow the instructions for category
A on an EPA Chemical resistance category selection chart.
Applicators and other handlers must wear: Long-sleeved shirt and long pants, socks, shoes and chemical-resistant gloves made of
any waterproof material such as polyethylene or polyvinyl chloride. Follow manufacturer's instructions for cleaning/maintaining PPE. Jf
no such instructions for washables, use detergent and hot water. Keep and wash PPE separately from other laundry.
Engineering control statement:
When handlers use closed systems, enclosed cabs, or aircraft 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 wash hands before eating, drinking, chewing gum, using tobacco or using the toilet.
ENVIRONMENTAL HAZARDS
This product is toxic to non-target plants. 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 cleaning equipment or disposing of equipment washwaters or
rinseate.
This product has a high potential for runoff after application. Poorly draining soils and soils with shallow water tables are more prone to
produce runoff that contains this product. 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 for contamination of water from runoff. Runoff
of this product will be reduced by avoiding applications when rainfall is forecasted to occur within 48 hours. Sound erosion control
practices will reduce this product's contribution to surface water contamination.
DIRECTIONS FOR USE
It is a violation of Federal law to use this product in a manner inconsistent with its labeling.
Read entire label before using this product.
Do not apply this product in a way that will contact workers or other persons, either directfyor through drift. Only protected handlers may
be in the same area during application. For any requirements specific to your State or Tribe, consult the agency responsible for
pesticides.
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
intervals. The requirements in this box only apply to uses of this product that are covered by the Worker Protection Starcciard. ~:
(l ('00 0(1 U (I U
Do not enter or allow worker entry into treated'areas during the restricted entry interval (REI) of 12 hours.~ ~: u CO
PPE required for early entry to treated areas that is permitted under the Worker Protection Standard and that involves c"ntac', with
anything that has been treated such as plants, soil or water, is coveralls over long-sleeved shirt and long pai:Hs~ Bocks and"sn'6'es and
chemical-resistant gloves made of any waterproof material such as polyethylene or polyvinyl chloride. G U , 0
STORAGE AND DISPOSAL
Do not contaminate water, food or feed by storage or disposal.
PESTICIDE STORAGE
Keep container tighlly closed when not in use. Avoid cross contamination with other pesticides.
PESTICIDE DISPOSAL
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Wastes resulting from the use of this product may be disposed of on site or at an approved waste disposal facility.
CONTAINER DISPOSAL
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Non-refillable container. Do not reuse or refill this container. Offer for recycling, if available. 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 % 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 puncture and
dispose of in a sanitary landfill, or by incineration; or, if allowed by State and local authorities, by burning. If burned, stay out of smoke.
GENERAL INFORMATION
Option® Corn Herbicide is a sulfonylurea herbicide. Option® Corn Herbicide is intended for application as a foliar spray in corn for the
control of annual and perennial grass and broad leaf weeds. Weed growth ceases within hours after Option® Corn Herbicide is applied.
Symptoms progress from yellowing to necrosis resulting in eventual plant death within 1-3 weeks after application.
Sulfonylurea herbicides have been associated with temporary yellowing or stunting. Corn quickly outgrows these effects and develops
normally. Option®Corn Herbicide contains a safener which enhances the ability of corn to recover from any initial herbicide effects.
Option® Corn Herbicide is for use on field corn, sweet corn and popcorn. Consult your local seed company agronomist prior to the use
of Option Corn Herbicide on corn grown for seed (inbreds). Option® Corn Herbicide can be used on all types of field corn, including hi­
lysine, white and high oil corn.
Injury arising from Option® Corn Herbicide due to hybrid sensitivity is the responsibility of the user. Follow seed company
recommendation charts for hybrid sensitivity to SUlfonylurea herbicides or ALS inhibitors.
2
Do not apply Option® Corn Herbicide to corn that exhibilsherbicide injury from previous applications of other herbicides.
INSECTICIDE INTERACTION INFORMATION
Soil Insecticide Interaction Information
When Option® Corn Herbicide and organophosphate (OP) insecticides are applied to corn, the degradation of Option® Corn Herbicide
is slower and corn injury can occur. DO NOT USE Option® Corn Herbicide in the same season as Counter® 15G, Counter® 20CR in
furrow, Dyfonate® or Thimet®.
For all corn hybrids, the following soil applied insecticides may be used prior to an application of Option® Corn HerbiCide:
Soil Applied Insecticide Use Pattern Use of Option® Corn Herbicide in the Same
Season
AzteC® All No use precautions
Capture®, Force®, Re[ent® All No use precautions
Lorsban® 15G All Temporary injury may occur
Counter® 20CR T-band Consult Counter® 20CR label
Counter® 20CR In-furrow DO NOT USE
Counter® 15G, Thimet®, All DO NOT USE
Dyfonate®
Foliar Insecticide Interaction Information
Foliar applications of an OP insecticide should not be made within 7 days of an Option® Corn Herbicide application or injury may result.
APPLICATION TIMING
Weed Application Timing
Option® Corn Herbicide is for postemergent use. Best results are obtained when applications are made to young actively growing.
weeds. Option® Corn Herbicide will affect weeds that are larger than the recommended height, however, speed of activity and control
may be reduced.
Broadcast Corn Application Timing
Broadcast applications of Option® Corn Herbicide must be made when corn is in the V1 through V6 growth stage.
Late or Rescue Applications:
Applications of Option Corn Herbicide at 1 3/4 ounces per acre may be applied to escaped weeds beyond labeled weed heights. In
these situations, partial control and reduced weed competition can be expected.
Drop Nozzles must be used for applications of Option® Corn Herbicide when corn is greater than V6 and less than V8 stage of growth.
Do not apply to corn that is more mature than V8 (Le. more than 8 visible leaf collars) stage of growth.
Yield loss due to competition: Research indicates competition from foxtail exceeding 4 inches in height may reduce corn yields.
Applications to foxtail and other annual grasses that exceed the sizes stated on the label increases the risk of yield losses due to
prolonged competition with the crop even though control may be acceptable.
Applications of Option® Corn Herbicide on corn that is V7 to V8 increases the potential for crop response. The risk may be greatly
reduced, put not eliminated, by using drop nozzles properly placed between corn rows to optimize coverage on the weeds and minimize
spray contact in the whorl and the leaf axles of the corn stalks.
SPRAY ADDITIVES
Option® Corn Herbicide is a water dispersible granule that requires the use of an external adjuvant and nitrogen fertilizer.
• Methylated or ethylated seed oil, containing at least 80% MSO and 10% emulsifier or greater, in combination with nitrogen
fertilizer, is the recommended adjuvant type to provide optimum weed control with Option® Corn Herbicide.
• " Non-ionic surfactants, crop oil concentrates, crop oil concentrate/methylated seed oil blends, and refined vegetable oils are not
recommended for use with Option® Corn Herbicide. The use of these adjuvants in place of methylated seed oil will result in
unacceptable weed control.
• In areas of low relative humidity (west of highway 281, which begins in Texas and ends in North Dakota) Urea Ammonium Nitrate
(UAN) is preferred over Ammonium Sulfate (AMS) and the higher rates listed in the following table are recommended.
• The addition of nitrogen fertilizer replacements and/or insufficient amounts of n"itrogen fertilizer may result in reduced weed control.
Recommended rates for methylated or ethylated seed oils and nitrogen fertilizers are listed in the following table:
3
Gallons Per Nitrogen
Acre (GPA) Adjuvant Type Adjuvant Rate 1 Nitrogen Fertilizer2
Fertilizer Rate
10-20 Methylated or 1.5 pts.lacre 28% or 32% Urea
Ethylated Seed Oil Ammonium Nitrate
(MSO or ESO). (UAN)
Methylated or Spray Grade
10-20 Ethylated Seed Oil 1.5 pts./acre Ammonium Sulfate
lMSOor ESO) (AMS)
1 For spray volumes of 19 gallons per acre or more, 1 % v/v of methylated or ethylated seed oil can be used.
2 Nitrogen fertilizer must be used in combination with an adjuvant.
APPLICATION METHODS
1.5 -2 qts./acre
1.5-3 Ibs/ac
Uniform, thorough spray coverage is important to achieve consistent weed control. Select nozzles and pressure that deliver MEDIUM
spray droplets as indicated in nozzle manufacturer's catalogs and in accordance with ASAE Standard S-572. Nozzles that deliver
COARSE spray droplets may be used to reduce spray drift provided spray volume per acre (GPA) is increased to maintain coverage of
weeds.
Do not use nozzles that produce FINE (e.g: - Cone) or EXTRA COARSE (e.g. - Flood jet) spray droplets.
Ground Application
Option® Corn Herbicide can be applied broadcast in a minimum of 10 gallons of water per acre. For weed control in dense weed
populations or under adverse growing conditions, 15 to 20 gallons of water per acre is recommended.
Typically, flat-fan nozzles operated at 30-60 PSI will deliver MEDIUM spray droplets, providing optimum spray coverage and canopy
penetration. Lower pressure operation and/or higher volume flat fan nozzles, typically, deliver COARSE sprays. Refer to nozzle
manufacturer catalogs.
Air induction nozzles should be used at or near 80 psi to produce a medium droplet size.
Aerial Application
Option® Corn Herbicide should be applied in a minimum of 5 gallons of water per broadcast acre. Use nozzle types arrangements that
will provide optimum spray distribution and maximum coverage. DO NOT use raindrop nozzles. Flagmen and loaders should avoid
inhalation of spray mist and prolonged contact with skin.
See the Spray Drift Management section of this label for additional information on proper application of Option® Corn Herbicide.
Mixing Instructions
Option® Corn Herbicide must be applied with clean and properly calibrated equipment. Prior to adding Option® Corn Herbicide, ensure
that the spray tank, filters and nozzles have been thoroughly cleaned.
1. Fill spray tank with 25% of the required volume of wate!, and begin agitation prior to the addition of Option® Corn Herbicide.
2. Continue agitation to ensure full dispersion of Option® Corn Herbicide.
3. If Option® Corn Herbicide is applied in a tank mixture with other pesticides, add Option® Corn Herbicide to the spray tank first
and ensure it is thoroughly dispersed before adding other pesticides. If Option® Corn Herbicide is added to a partial tank of
spray solution, pre-slurry Option® Corn Herbicide in clean water prior'to adding to the tank.
4. Continue to' fill the spray tank with water to the desired volume and agitate while adding the required spray adjuvants and
nitrogen fertilizers. If ammonium sulfate (AMS) is the nitrogen fertilizer source, it is preferred that the AMS go into the tank
before the Option® Corn Herbicide. .
5. Continue agitation during application to ensure a uniform spray mixture.
RE-SUSPENDING WG PRODUCTS IN SPRAYSOLUTION
Like other Water Dispersible Granules or suspension concentrates (SC's), Option® Corn Herbicide will settle if left standing without
agitation. If the spray solution is allowed to settle for one hour or more, re-agitate the spray solution for a minimum of 10 minutes before
application.
4
COMPATIBILITY
If Option® Corn Herbicide is to be tank mixed with other herbicides, compatibility should be tested prior to mixing. To test for
compatibility, use a small container and mix a small amount (0.5 to 1qt) of spray, combining all ingredients in the same ratio as the
anticipated use. If any indications of physical incompatibility develop, do not use this mixture for spraying. Indications of incompatibility
usually occur within 5-15 minutes after mixing. Read and follow the label of each tank mix product used for precautionary statements,
directions for use, geographic and other restrictions.
WEED CONTROL RECOMMENDATIONS
Rate Recommendation Tables for Weed Control
Option® Corn Herbicide should be applied at a rate of 1112 - H4 ounces of product per acre, in corn. Option® Corn Herbicide provides
control of emerged weeds. Weeds emerging after application may require a second treatment. Sequential applications of Option® Corn
Herbicide should not exceed a maximum of two applications or 3112 ounces of product per acre per use season. Option® Corn Herbicide
at 1112 ounces of product per acre for control of grass and broadleaf weeds is shown in the following table.
Grass Weeds Controlled with Option® Corn Herbicide
at a Rate of 1"M! Ounces of Product Per Acre
Maximum Weed Height or Diameter At
Grass Weed Species Application
(Inches)
Barnyardgrass 4
Bluellrass, annual 4
Brome, downy 8
Brome, smooth 8
Canarygrass, reed 8
Crabqrass, larqeb 2
CUQ9rass, woolll 2
Fescue, tall 8
Foxtail, bristly 3
Foxtail, giant 6
Foxtail, qreen 3
Foxtail, yellow 3
Goosegrass 4
Johnsongrass, rhizome 16
Johnsongrass, seedlinq 16
Millet, wild-proso 3
Oat, wild 6
Orchardgrass 8
Panicum, fall 3
Panicum, Texas 2
Quackqrass 10
Ryegrass, Italian 8
Sandbur, fielda 2
Shattercane 12
Signalgrass, broadleafb 2
Stinkgrass (Lovegrass) 3
Wirestem Muhly 10
Witchgrass 3
Volunteer Cereals 4
a Adequate soil moisture required for control.
b For best management of these weeds a pre-emergent grass herbicide followed by Option® Corn Herbicide is recommended.
5
Broadleaf Weeds Controlled with Option® Corn Herbicide
at a Rate of 1 V2 Ounces of Product Per Acre
Broadleaf Weed Species Maximum Weed Height At Application
(Inches)
Burcucumber 3
Cocklebur, common 2
Jimsonweed 3
Lambsquarters, common 2
Mallow, venice 2
Marshelder 3
Morningglory, ivyleaf *
Morningglory, pitted *
Mustard, wild 4
Nightshade, eastern black 4
Nightshade, hairy 4
Pigweed, red root 3
Pokeweed, common 3
Ragweed, common 2
Ragweed, giant * ,
Sunflower, common 2
Velvet leaf 2
Indicates suppression of weeds 3 inches or less.
Weed Resistance
ALS-resistance exists in some biotypes. These biotypes will not be controlled by Option® Corn Herbicide. Consider using herbicides
with other modes of action such as Liberty® Herbicide or Balance® Pro Herbicide to control these species.
Cultivation
Cultivation can help remove suppressed weeds or multiple flushing weeds. Cultivation can be made at least 7 days before, or after, an
application of Option® Corn Herbicide.
6
TANK MIX RECOMMENDATIONS FOR OPTION® CORN HERBICIDE IN FIELD CORN
Certain tank mixes may aid in the performance of Option® Corn Herbicide. When using Option® Corn Herbicide in tank mix
combinations, follow the precautions and directions of the most restrictive label. For tank mix applications on sweet corn and popcorn,
refer to the SWEET CORN AND POPCORN USE DIRECTIONS section of this label.
Tank Mixtures for Additional Weed Control
Methylated or ethylated seed oil and nitrogen are recommended for use with all tank mix partners including Callisto used in conjunction
with Option® Corn Herbicide.
Atrazine 1 Fultime™ Herbicide
Beacon® Guardsman Max 1
Caliisto™ Herbicide Harness®
Confidence® Herbicide Harness® Xtra 1
Confidence® Xtra Herbicide Harness® Xtra 5.6L 1
Confidence® Xtra 5.6L Herbicide Hornet™ WDG
Define™ SC Keystone™ Herbicide 1
Degree ™ Herbicide NorthStar™
Degree Xtra ™ Herbicide
DistincFM Herbicide2
Outlook™ Herbicide
Permit®
Exceed® Prowl®
SpjritTM
Status
Surpass™ EC
TopNotchTM Herbicide
Tough® 5 EC Herbicide
VolleyTM Herbicide
Widematch
1 Treat weeds that are less than 3 inches in height. Reduced control of yellow foxtail, quackgrass and wirestem muhly can be expected.
2Tank mixtures with Distinct should not be applied until corn reaches 4 inches in height.
SWEET CORN AND POPCORN USE DIRECTIONS
• Option® Corn Herbicide may be broadcast or applied with drop nozzles to sweet corn or popcorn that is in the V1 through V6 stage
of growth. "
• Not all sweet corn and popcorn varieties have been tested, nor does Bayer CropScience have access to all seed company or
processor data. Do not apply this product to sweet corn or popcorn unless the seed company, processor, or State Agricultural
Extension service has tested this product on the particular hybrid/variety and specifically approves and recommended the use. Do
not apply this product if the crop is under extreme stress due to drought, water-saturated soils, low-fertility (especially low nitrogen
levels), or other poor growing conditions.
Tank Mix Recommendations
." Sweet corn: Option® Corn Herbicide may be tank mixed with atrazine or Permit.
• Popcorn: Option® Gorn Herbicide may be tank mixed with atrazine, Distinct or Permit.
Tank Mixtures for Insect Control
To provide weed and insect control in corn, Option® Cor·n Herbicide may be mixed with the following foliar insecticides.
Ambush® Insecticide
Asana® XL Insecticide
Baythroid® 2 Emulsifiable
Pyrethroid Insecticide
Capture®
TANK CLEANUP PROCEDURE
Furadan
Mustang®
Pounce® 3.2EC
Insecticide
Warrior™ Insecticide
1. Drain the tank completely, then wash out tank, boom and hoses with clean water. Drain again.
2. Fill the tank half full with clean water and add ammonia (i.e., 3% domestic ammonia solution) at a dilution rate of 1% (i.e., 1 gallon
of domestic ammonia for every 100 gallons of rinsate). Completely fill the tank with water. Agitate/recirculate and flush through
boom and hoses. Leave agitation on for 10 minutes. Drain tank completely.
3. Repeat Step 2.
"4. Remove nozzles an"d screens and soak them in a 1 % ammonia solution. Inspect nozzles and screens and remove visible residues.
5. Flush tank, boom, and hoses with clean water.
6. Inspect tank for visible residues. If present, repeat Step 2.
SPRAY DRIFT MANAGEMENT
Option® Corn Herbicide is not volatile. Damage to sensitive crops can occur as a result of spray drift. Spray drift can be managed by
several application factors and by spraying under the appropriate climatic conditions. Consequently, avoidance of spray drift is the
responsibility of the applicator.
7
SENSITIVE AREAS: The pesticide may only be applied when the potential for drift to adjacent sensitive areas (e.g., residential areas,
bodies of water, known habitats for threatened or endangered species, non-target crops, non-target plants) is minimal (e.g., when wind
is blowing away from the sensitive areas).
Avoiding spray drift at the application site is the responsibility of the applicator. The interaction of many equipment-and-weather-related
factors determine the potential for spray drift. The applicator and the grower are responsible for considering all these factors when
making decisions.
Do not apply under circumstances where possible drift to unproiected persons or to food, forage, or other plantings that might be
damaged or crops thereof rendered unfit for sale, use or consumption can occur.
The following drift management requirements must be followed to avoid off-target drift movemenl'from aerial applications to agricultural
field crops.
1. The distance of the outer most nozzles on the boom must not exceed 3/4 the length of the wingspan or rotor.
2. Nozzles must always point backward parallel with the air stream and never be pointed downwards more than 45 degrees.
3. All aerial and ground application equipment must be properly maintained and calibrated using appropriate carriers.
Where states have more stringent regulations, they should be observed. The applicator should be familiar with and take into account
the information covered in the Aerial Drift Reduction Advisory Information.
INFORMATION ON DROPLET SIZE:
The most effective way to reduce drift potential is to apply large droplets. The best drift management strategy is to apply the largest
droplets that provide sufficient coverage and control. Applying larger droplets reduces drift potential, but will not prevent drift if
applications are made improperly, or under unfavorable environmental conditions (see Wind, Temperature and Humidity, and
Temperature Inversions below).
Uniform, thorough spray coverage is important to achieve consistent weed control. Select nozzles and pressure that deliver MEDIUM
spray droplets as indicated in nozzle manufacturer's catalogs and in accordance with ASAE Standard S-572. Nozzles that deliver
COARSE spray droplets may be used to reduce spray drift provided spray volume per acre (GPA) is increased to maintain coverage of
weeds.
CONTROLLING DROPLET SIZE:
• Volume - Use high flow rate nozzles to apply the highest practical spray volume. Nozzles with higher rated flows produce larger
droplets. '
• Pressure - Do not exceed the nozzle manufacturer's recommended pressures. For many nozzle types lower pressure produces
larger droplets. When higher flow rates are needed, use higher flow rate nozzles instead of increasing pressure.
• Number of nozzles - Use the minimum number of nozzles that provide uniform coverage.
• Nozzle Orientation - Orienting nozzles so that the spray is released parallel to the airstream with aerial applications produces larger
droplets than other orientations and is the recommended practice. Significant deflection from horizontal will reduce droplet size and
increase drift potential.
• Nozzle Type - Use a nozzle type that is designed for the intended application. With most nozzle types, narrower spray angles
produce larger droplets. Consider using low-drift nozzles. Solid stream nozzles oriented straight back produce the largest droplets
and the lowest drift.
BOOM LENGTH:
For some use patterns, reducing the effective boom length to less than 3/4 of the wingspan or rotor length may further reduce drift
without reducing swath width.
APPLICATION HEIGHT:
Applications should not be made at a height greater than 10 feet above the top of the largest plants unless a greater height is required
for aircraft safety. Making applications at the lowest height that is safe reduces exposure of droplets to evaporation and wind.
For ground boom applications, apply with nozzle height no more than 4 feet above the ground or crop canopy.
SWATH ADJUSTMENT:
When applications are made with a crosswind, the swath will be displaced downwind. Therefore, on the up and downwind edges of the
field, the applicator must compensate for this displacement by adjusting the path of the aircraft upwind. Swath adjustment distance
should increase, with increasing drift potential (higher wind, smaller drops, etc.)
8
WIND:
Drift potential is lowest between wind speeds of 2 - 10 mph. However, many factors, including droplet size and equipment type
determine drift potential at any given speed. Application should be avoided below 2 mph due to variable wind direction. and high
inversion potential. NOTE: Local terrain can influence wind patterns. Every applicator should be familiar with local wind patterns and
how they affect spray drift.
For all non-aerial applications, wind speed must be measured adjacent to the application site, on the upwind side, immediately prior to
application.
TEMPERATURE AND HUMIDITY:
When making applications in low relative humidity, set up equipment to produce larger droplets to compensate for evaporation. Droplet
evaporation is most severe when conditions are both hot and dry. Avoid spraying during conditions of low humidity and/or high
temperatures.
TEMPERATURE INVERSIONS:
Do not make aerial or ground applications into areas of temperature inversions. Temperature inversions restrict vertical air mixing,
which causes small suspended droplets to remain in a concentrated cloud. This cloud can move in unpredictable directions due to the
light variable winds common during inversions. Temperature inversions are characterized by increasing temperatures with altitude and
are common on nights with limited cloud cover and light to no wind. They begin to form as the sun sets and often. continue into the
morning. Their presence can be indicated by ground fog; however, if fog is not present, inversions can also be identified by the
movement of smoke from a ground source or an aircraft smoke generator. Smoke that layers and moves laterally in a concentrated
cloud (under low wind conditions) indicates an inversion, while smoke that moves upward and rapidly dissipates indicates good vertical
air mixing.
ROTATIONAL GUIDELINES
Option® Corn Herbicide rapidly degrades in the soil. This degradation is enhanced by warm moistsoils that are microbially active.
If a corn crop has been destroyed by hail or other means soon after a Option® Corn Herbicide application, corn can be replanted 7
days after an Option® Corn Herbicide application and soybeans can be planted 14 days after an Option® Corn Herbicide application.
All other crops can be planted 60 days after an Option® Corn Herbicide application.
RESISTANCE MANAGEMENT
Some weed populations may contain plants naturally resistant to Option® Corn Herbicide or other herbicides with the same mode of
action (ALS/AHAS enzyme inhibitors). Repeated use of herbicides with the same mode of action, allow resistant weeds to spread. To
manage the development and spread of resistant weed populations, use herbicides with different modes of action in tank mixture, in
sequence, rotation, or in conjunction with alternate cultural practices. Option® Corn Herbicide can be u~ed effectively as one of the
modes of action in conjunction with Balance® Pro or Liberty® herbicides.
PRECAUTIONS FOR USE
1. Option® Corn Herbicide is rainfast 2 hours after application on most weed species. Rainfall within 2 hours may necessitate
retreatment with Option® Corn Herbicide or may result in reduced weed control. Applications should be made to actively growing
weeds. Weed control may be reduced if application is made when weeds are dust covered or in the presence of heavy dew, fog,
and mist/rain or when weeds are under stress due to drought.
2. DO NOT apply when wind causes drift to off-site vegetation as injury may occur. Small amounts of Option® Corn Herbicide
delivered via drift or tank contamination can cause severe damage to other crops. Careful management of spray drift and tank
cleanout is required.
3. DO NOT apply more than two applicatio~s of Option® Corn Herbicide to corn in one growing season.
4. DO NOT apply Option® Corn Herbicide within 70 days of harvesting corn grain or 45 days of harvesting corn forage or sweet corn
ears. Do not graze within 45 days of an Option® Corn Herbicide application.
5. DO NOT use nitrogen solutions as spray carriers.
6. DO NOT apply this product through any type of irrigation system.
7. Apply Option® Corn Herbicide spray mixtures within 24 hours of mixing to avoid product degradation.
S. Do not apply in greenhouse.
9. DO NOT apply more than 0.0765 Ib ai/A of foramsulfuron from all recommended application of EquipTM Corn Herbicide and
Option® Corn Herbicide.
10. Do not apply Option® Corn Herbicide by air in the state of New York.
9
;t
''7
IMPORTANT: READ BEFORE USE
Read the entire Directions for Use, Conditions, Disclaimer of Warranties and Limitations of Liability before using this product. If terms
are not acceptable, return the unopened product container at once. .
By using this product, user or buyer accepts the following Conditions, Disclaimer of Warranties and Limitations of Liability.
CONDITIONS: The directions for use of this product are believed to be adequate and must be followed carefully. However, it is
impossible to eliminate all risks associated with the use of this product. Crop injury, ineffectiveness or other unintended consequences
may result because of such factors as weather conditions, presence of other materials, or the manner of use or application, all of which
are beyond tre control of Bayer CropScience. All such risks shall be assumed by the user or buyer.
DISCLAIMER OF WARRANTIES: TO THE EXTENT CONSISTENT WITH APPLICABLE LAW, BAYER CROPSCIENCE MAKES NO
OTHER WARRANTIES, EXPRESS OR IMPLIED, OF MERCHANTABILITY OR OF FITNESS FOR A PARTICULAR PURPOSE OR
OTHERWISE, THAT EXTEND BEYOND THE STATEMENTS MADE ON THIS LABEL. No agent of Bayer CropScience is authorized to
make any warranties beyond those contained herein or to modify the warranties contained herein. TO THE EXTENT CONSISTENT
WITH APPLICABLE LAW, BAYER CROPSCIENCE DISCLAIMS ANY LIABILITY WHATSOEVER FOR SPECIAL, INCIDENTAL OR
CONSEQUENTIAL DAMAGES RESULTING FROM THE USE OR HANDLING OF THIS PRODUCT.
LIMITATIONS OF LIABILITY: TO THE EXTENT CONSISTENT WITH APPLICABLE LAW, THE EXCLUSIVE REMEDY OF THE
USER OR BUYER FOR ANY AND ALL LOSSES, INJURIES OR DAMAGES RESULTING FROM THE USE OR HANDLING OF THIS
PRODUCT, WHETHER IN CONTRACT, WARRANTY, TORT, NEGLIGENCE, STRICT LIABILITY OR OTHERWISE, SHALL NOT
EXCEED THE PURCHASE PRICE PAID, OR AT BAYER CROPSCIENCE'S ELECTION, THE REPLACEMENT OF PRODUCT.
NET CONTENTS: Various Sizes
Option, Balance Pro, Baythroid, Liberty and Aztec are registered trademarks of Bayer. Define is a trademark of Bayer.
Lorsban is a registered trademark and Surpass, Fultime, Keystone, TopNotch, Volley, Hornet, and Widematch are trademarks of Dow
AgroSciences LLC.
Thimet, Counter, Prowl, and Regent are registered trademarks and Distinct, Outlook, Guardsman Max, and Status are trademarks of
BASF Corporation.
Harness and Harness Xtra are registered trademarks and Degree and Degree Xtra are trademarks of Monsanto Company.
Confidence and Confidence Xtra are registered trademarks of Monsanto Technology LLC.
Permit is a registered trademark of Nissan Chemical Industries, Ltd.
Asana XL is a registered trademark of E.!. DuPont DeNemours and Co
Pounce, Capture, Mustang and Furadan are registered trademarks of FMC Corporation
Tough, Exceed, Ambush, Force and Beacon are registered trademarks and NorthStar, Warrior, Callisto and Spirit are trademarks of
Syngenta Group Company.
Sterling Plus is a trademark of Agriliance, LLC ..
~Bayer CropScience
Bayer CropScience LP
P.O. Box 12014, 2 T.W. Alexander Drive
Research Triangle Park, North Carolina 27709
1-866-99BA YER (1-866-992-2937)
http://www.bayercropscience.us
Option® Corn Herbicide (MASTER) 09/05/07, Notification 03/10/0B.
10
Recordld#: ELL002301
Attachment 000264-00685.20080310.0ptionCornHerbicide
Name: .pdf
Registration #: 000264-00685
Product: OPTION CORN HERBICIDE
PC Code: 122020
RM Team: RM 25
Version: Initial
CD Enclosed?: Yes
Comments: Option Corn Herbicide
Application
Correspondence:
Attachment:
Product Active
Status:
Submission 03/10/2008
Date:
Receipt Date:
000264·00685.2008031 O. OptionCornH erbicide. pdf
Status: Pending
Submisssi 826246
on BC:
Action 332
Code:
OPPIN Receipt Date: 03/12/2008
Action Comments: Label notification per PRN 2007-4 : Addition of required labeling under
container disposal
Reviewer Comments:
User Reviews &
Response Letters
Certification with Respect to Label Integrity
version: 9/11/02
I certify that the information (including, but not limited to, text, tables, and graphics)
contained in the electronic file identified below by file name and submitted with this
certification is the same information as that on the paper copies of these documents
included with this submission.
II PROPOSED LABEL
EPA Registration # Date Submitted Electronic file name
to EPA
I
264-685 03/10108 000264-00685.20080310.0ptionCornHerbici
de. pdf
I certify that the statements that I have made on this form are true, accurate, and
complete. I acknowledge that any knowingly false or misleading statements may be .
punishable by fine or imprisonment or both under applicable law. , '
!JJnA.~toyrJ~ ~ignature .
03/10/2008
Date·
Anna B. Wilkins
Name (typed)
Label Development Specialist
Title