# DUPONT STEADFAST HERBICIDE

- EPA Reg No: **352-608**
- Registrant: CORTEVA AGRISCIENCE, LLC
- Signal word: Caution
- Active ingredients: Nicosulfuron (50%); Rimsulfuron (25%)
- Label accepted: 2010-05-18
- Source PDF: https://www3.epa.gov/pesticides/chem_search/ppls/000352-00608-20100518.pdf

---
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UNITED STATES ENVIRONMENTAL PROTECTION AGENCY 
Washington, D.C. 20460 
~~IU~ ~ r! 
~i.PRo¢~ 
Rebecca Ashley 
E.!. du Pont de Nemours and Company 
1007 Market Street 
Wilmington, DE 19898 
Subject: Label Amendment (container disposal) 
DuPont Steadfast Herbicide 
EPA Reg. No. 352-608 
Application Dated April 21, 2010 
Dear Ms. Ashley: 
OFFICE OF 
CHEMICAL SAFETY AND 
POLLUTION PREVENTION 
MAY 1 8 2010 
The labeling referred to above, submitted in connection with registration under the Federal Insecticide, 
Fungicide, and Rodenticide Act (FIFRA), as amended, is acceptable, provided you make the following 
changes: 
1. It is suggested that the resistance-management grouping symbols be placed on the front panel of the 'label 
as described in PR Notice 2001-5. 
2. .On the DUPONT STEADFAST HIGHLIGHTS page, change the text to read "Apply to actively growing 
grass and broadleaf weeds at the specified sizes. See RATE." 
3. Change the User Safety Recommendations phrase to "Remove clothinglPPE". 
4. Change the Environmental Hazards phrase from "equipment rinsewater" to "equipment washwaters or 
rinsate". 
5. On page 10 and in the Table of Contents, change the heading from "IMPORTANT PRECAUTIONS" to 
"RESTRICTIONS AND PRECAUTIONS". It is suggested that the advisory precautions be 
distinguished from the mandatory restrictions by placing them under separate.subsections. 
A stamped copy of your label is enclosed for your records. This label supercedes all previously 
accepted labels. You must submit one (1) copy of the final printed label before you release the product for 
shipment. Products shipped after eighteen (18) months from the date of this letter or the next printing of the 
label, whichever occurs first, must bear the new revised label. If these conditions are not complied with, the 
registration will be subject to cancellation in accordance with FIFRA §6(e). Your release for shipment of the 
product constitutes acceptance of these conditions. 
Page 1 of 1 
Sincerely, 
Jim Tompkins 
Product Manager 25 
Herbicide Branch 
Registration Division (7505P) 
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DuPont™ Steadfast® 
• •• 
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herbicide 
DRAFT LABEL··: : .. :: . 
•••• • • ••••

~'D.lJ'p~~iN,IT,~':~I~AQF~~r@'tii~H,i..I(;:ijI$iF'; :111 TABLE OF CONTENTS 
! • 'SfuAl)FAST®R~6~idJ;~,~6Itigti~{p,6s' \;~";; Directions for Use ............................ 2 
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", an.g1:>fQ~ql~llfw¢~;£QJ:).tTQlirifi~rgL¢,o, Product Information .......................... 2 
When to apply ............................. 2 
Timing to crop ........................... 2 
Timing to weeds .......................... 2 
Rate ................................... 3 
Weeds controlled ........................ .3 
Spray adjuvants ......................... .3 
Mixing instructions ...................... .4 
When to apply - sequential applications ........ .4 
Tank mix applications ...................... .4 
Broadleaf weeds ......................... .4 
Crabgrass ............................... 5 
Additional information .................... .5 
Tank mix compatibility testing ................ 6 
Sequential DuPont™ ACCENT® applications .... 6 
Cultivation ................................ 7 
Environmental conditions 
and biological activity ..................... 7 
Soil insecticide interactions ................... 7 
Crop rotation .............................. 7 
Application information ...................... 8 
Ground application ....................... .8' 
Aerial application ......................... 8 
Sprayer preparation and cleanout .............. 8 
Spray drift management ...................... 9 
Integrated Pest Management .................. 10 
Resistance ............................... ,.10 
Important precautions ......................... 10 
Storage and Disposal .......................... 10 
Warranty ................................... 12 
•••••• • •• • •• • • 
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DuPont™ 
Steadfast® 
herbicide 
For use inField Corn 
Active Ingredients By Weight 
ACCEPTED 
with COMMENTS 
in EPA Letter Dated 
MAY 1 8 2010 
Under the Federal Ill8Ccticide, 
Fungicide, and Rodenticide Act 
lIS amended, for the pesticide 
registered under EPA Reg. No. 
Nicosulfuron PRECAUTIONARY STATEMENTS (cont'd) 
2-[[(4,6-dimethoxypyrimidin-2- HAZARDS TO HUMANS 
yl)aminocarbonyl]aminosulfonyl]-
--=-N.:..::,N~-..;:;dl::,;· m;:,;;e.=;th:....;yl:...,:-3:;",.-p.::.y:.:;ri:,;:;dl::,;· n.=.;ec:,;:;ar:;,:;b.::,;ox;:,;;a:::ffil::;· d:;,:;e ____ .....;5::..;0;.;.:,% AN DOOM ESTIC AN I MALS 
Rimsulfuron Caution! Causes moderate eye irritation. Harmful if 
N«4,6-dimethoxypyrimidin-2- absorbed through skin. Avoid contact with skin, eyes or 
yl) aminocarbonyl)-3-(ethylsulfonyl) clothing. 
---=-2::...J-p"",y.:.,:rid=i:.:.::ne;.:;,;su:;::lf;;;,.on::::a::,::ffil::::· d;;;,.e _______ -=2::.:;,5.:..:%_ PERSONAL PROTECTIVE EQUIPMENT (PPE) 
Other Ingredients 25% Some materials that are chemical resistant to this product 
TOTAL are listed below. If you want more options follow the 
100% instructions for Category A on the EPA chemical 
EPA Reg. No. 352-608 EPA Est. No. ____ resistance category selection chart. 
Nonrefdlable Container 
Net _____ _ 
OR 
Refdlable Container 
Net _____ _ 
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 
this label, find someone to explain it to you in detail.) 
FIRST AID 
IF IN EYES: Hold eye open and rinse slowly and gently 
with water for 15-20 minutes. Remove contact lenses, if 
present, after the first 5 minutes, then continue rinsing eye. 
Call a poison control center or doctor for treatment advice. 
IF ON SKIN OR CLOTHING: 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. 
You may also contact 1-800-441-3637 for emergency 
medical treatment information. 
1 
Applicators and other handlers must wear: 
Long-sleeved shirt and long pants. 
Chemical Resistant Gloves Category A (such as butyl 
rubber, natural rubber, neoprene rubber, or nitrile rubber) 
~14 mls. 
Shoes plus socks. 
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. 
USER SAFETY RECOMMENDATIONS 
USERS SHOULD: Wash hands before eating, ___ • 
drinking, chewing gum, using t~Iii<OQ,(ir usin~h­
toilet. Remove clothing immedit1tely!if resticide gets 
inside. Then wash thoroughly an-d Qut on clean-· _ -_ 
, ...... . clothing. :: _. -. . . - -ENVIRONMENTAl!ofik~ARDS •• 
Do not apply directly to water, to i!idi w~ere surfac~ 
water is present or to intertidal areas below the ~.aorp '~h 
water mark. Do not contaminate water when disposin1i of 
equipment rinsewater. Do not apply where/when. - - • -
conditions could favor runoff. Do not apply if a severe­
storm is expected within 24 hours.

DIRECTIONS FOR USE 
It is a violation of federal law to use this product in a 
manner inconsistent with its labeling. 
Do not apply this product in a way that will contact workers 
or other persons, either directiy 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 (RED of 4 hours. 
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 Category A (such as butyl 
rubber, natural rubber, neoprene rubber, or nitrile 
rubber) ~14 rnls. 
Shoes plus socks. 
DuPont™ STEADFAST® herbicide must be used only in 
accordance with directions on this label or in supplemental 
DuPont publications. DuPont will not be responsible for 
losses or damage resulting from use of this product in any 
manner not specified by DuPont. 
PRODUCT INFORMATION 
STEADFAST® herbicide is a water-dispersible granule 
used at the rate of 3/4 ounce per acre for selective 
postemergence grass and broadleaf weed control in field 
corn. 
Do not apply to field corn grown for seed, to popcorn or to 
sweet corn. 
Do not make more than one application of STEADFAST® 
per cropping season. 
Do not apply aerially in California or New York State. 
2 
WHEN TO APPLY 
TIMING TO CROP STAGE 
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Apply STEADFAST® to field corn hybrids with a relative 
maturity (RM) rating of 77 days or more, including "food 
grade" (yellow dent, hard endosperm), waxy and oil corn. 
Not all field corn hybrids of less than 77 days RM, not all 
white corn hybrids nor Hi-Lysine hybrids have been tested for 
crop safety, nor does DuPont have access to all seed company 
data. Consequently, injury arising from the use of 
STEADFAST® on these types of corn is the responsibility of 
the user. Consult with your seed supplier before applying 
STEADFAST® to any of these corn types. Applications of 
STEADFAST® to corn hybrids of 77-88 CRM should be 
limited to corn that is 12" tall, less than or equal to 5-1eaf 
collars, whichever is most restrictive. In addition, the 
application of tank mixtures with dicamba-containing 
herbicides (such as "Clarity" or "Distinct") to 77-88 CRM 
corn should contain no more than 2 ounces a.i. dicamba (e.g. 
4 ounces "Clarity"). Seed company publications indicate 
"Warning", "Crop Response Warning", or "Sensitive" 
notations for the use of some ALS herbicides on corn hybrids 
of 77 CRM or higher. As noted in the seed company 
publications, DuPont sulfonylurea herbicides such as 
STEADFAST® should be used with caution on these hybrids. 
Consult with your local DuPont representative or the DuPont 
Label Web Site (http://cropprotection.dupont.coml) for any 
additional supplemental labeling information relative to 
potential corn hybrid sensitivity to STEADFAST®. 
Limit STEADFAST® applications to corn that is up to 12" 
tall, up to and including 5 leaf collars, whichever is IU~~. 
restrictive, in the states of KS, OK ap~.\~.. ..:. 
TIMING TO WEEDS : :: • • • .. -. Apply STEADFAST® when grass.fioar&.~ung a:ae~v.ely 
growing, but before they exceed the s~es listed on this •• ••• label. •• • ••• • •••• 
• Applications made to weeds at grm4th sZages greatM than 
those listed below may result in ilIM~plete control. • •••••• Grass competition due to incomplete control may reduce 
yields. • ••••• 
• Adequate soil moisture is required for optimum :cti~!ty. 
Rainfall within 5 to 7 days after application will enhance 
STEADFAST® residual activity.

If an activating rainfall or sprinkler irrigation (>0.5 inch) is 
not received within 5-7 days after application, follow with a 
cultivation or with a sequential application of DuPont™ 
ACCENT® herbicide, if needed. See CULTIVATION or . 
SEQUENTIAL ACCENT® APPLICATIONS. 
RATE 
Apply DuPont™ STEADFAST® at a rate of 3/4 ounce per 
acre for season-long control of grass and broadleaf weeds listed 
below. 
WEEDS CONTROLLED 
Grasses 
Barnyardgrass 
Canarygrass 
Cereals, volunteer 
Crabgrass, large* 
Cupgrass, woolly* 
Foxtails 
bristly 
giant 
green 
yellow* 
Goosegrass 
Johnsongrass, seedling or rhizome 
Millet, wild proso 
Muhly, wirestem 
Panicum, fall & Texas 
Quackgrass 
Ryegrass, Italian 
Sandbur, field* 
Shattercane 
Signalgrass, broadleaf 
Oats, wild 
Witchgrass 
Height (Inches) 
at Application 
4" 
6" 
2" 
I" 
3" 
4" 
4" 
4" 
4" 
2" 
8 - 12" 
4" 
4"* 
4" 
8"* 
4" 
2" 
6" 
2" 
2" 
4" 
*Cultivation or retreatment with DuPont™ ACCENT® may be required. 
See "For Additional Control of Crabgrass and Later Emerging Grasses." 
Broadleaf Weeds 
Control: 
Amaranth, powell 
Burcucumber 
Dandelion 
Jimsonweed 
Momingglory, annual 
Mustard, wild 
Pigweed, redroot & smooth 
Sunflower, common 
Suppression: 
Cocklebur, common 
Ladysthumb 
Lambsguarters, common 
Hemp dogbane 
Nutsedge, yellow 
Smartweed, PA 
Thistle, Canada 
Velvetleaf 
Waterhemp, tall & common 
Height (Inches) 
at Application 
4" 
4" 
8" 
4" 
4" 
4" 
4" 
4" 
4" 
4" 
4" 
4" 
4" 
4" 
4" 
4" 
2" 
3 
As weeds mature, their sensitivity to STEADFAST® 
decreases. Grassy weeds growing under stress due to 
drought or other environmental factors may become mature 
(more than 3 tillers) before they reach the size listed, in 
which case their susceptibility to STEADFAST® may be 
reduced. 
SPRAY ADJUVANTS 
Applications of STEADFAST® must include either a crop 
oil concentrate or a nonionic surfactant. In addition, an 
ammonium nitrogen fertilizer must be used unless specif­
ically prohibited by tank mix partner labeling. Crop oil 
concentrate plus ammonium nitrogen fertilizer is the 
preferred adjuvant system for STEADFAST®. Consult local 
DuPont fact sheets, technical bulletins, and service policies 
prior to using other adjuvant systems. If another herbicide is 
tank mixed with STEADFAST®, select adjuvants 
authorized for use with Doth products. Products must 
contain only EPA-exempt ingredients (40 CFR 1001). 
Petroleum Crop Oil Concentrate (COC) or 
Modified Seed Oil (MSO) 
• Apply at 1 % v/v (1 gallon per 100 gallons spray solution) or 
2% under arid conditions. 
• MSO adjuvants may be used at 0.5% v/v (0.5 gallon per 100 
gallons spray solution) if specifically noted on adjuvant 
product labeling. 
• Oil adjuvants must contain at least 80% high quality, 
petroleum (mineral) or modified vegetable seed oil with at 
least 15% surfactant emulsifiers. 
Nonionic Surfactant (NIS) 
• Apply at 0.25% v/v (1 quart per 100 gallons spray 
solution) or 0.5% under arid conditions. 
• Surfactant products must contain at least 60% nonionic 
surfactant with a hydrophilicllipophilic balance (HLB) 
greater than 12. 
Ammonium Nitrogen Fertilizer 
• Use 2 quarts/acre of a high-quality urea ammonium nitrate 
(UAN), such as 28%N or 32%N, or 2 pounds/acre of a 
spray-grade ammonium sulfate (AMS). Use 4 quarts/acre 
UAN or 4 pounds/acre AMS under arid conditions. 
• Do not use liquid nitrogen fertilizer as the total carrier 
solution. 
Special Adjuvant Types 
• Combination adjuvant products may be used at d'~e·s ·that 
provide the required amount of ~:rs', rQc, M~~ ~d/or 
ammonium nitrogen fertilizer. C~nsu't ~roduct lite;ature -. .. . 
for use rates and restrictions. • • •• • • ••• •• • • • 
• In addition to the adjuvants specifie~t,ve, otMftr • 
adjuvant types may be used ifth~~r.wide the;'a~~.· 
functionality and have been evaluat&ct m:ct approvect by ... ,. DuPont Product Management. Consu t separat<:l;>~fOyt 
technical bulletins for detailed information befc1re using 
adjuvant types not specified on this label. •••••• 
••••

MIXINGINSTRUcnONS 
1. Fill the tank 114 to 113 full of water. 
2. While agitating, add the required arnount of DuPont™ 
STEADFAST®. 
3. Continue agitation until the STEADFAST® is fully 
dispersed, at least 5 minutes. 
4. Once the STEADFAST® is fully dispersed, maintain 
agitation and continue filling tank with water. Thoroughly 
mix STEADFAST® with water before adding any other 
material. 
5. As the tank is filling, add the required spray adjuvants 
(crop oil concentrate, nonionic surfactant, or ammonium 
nitrogen fertilizer). 
6. If the mixture is not continuously agitated, settling will 
occur. If settling occurs, thoroughly re-agitate before 
using. 
7. Apply STEADFAST® spray mixture within 24 hours of 
mixing to avoid product degradation. 
8. If STEADFAST® and a tank mix partner are to be 
applied in multiple loads, pre-slurry the STEADFAST® 
in clean water prior'to adding to the tank. This will 
prevent the tank mix partner from interfering with the 
dissolution of the STEADFAST®. 
WHEN TO APPLY - SEQUENTIAL APPLICATIONS 
FOLLOWING REDUCED RATES OF 
PREEMERGENCE HERBICIDES 
STEADFAST® may be used as a sequential application in a 
planned postemergence weed control program in com following 
a reduced rate of a preemergence herbicide. 
Apply a reduced rate of a preemergence grass herbicide Prior to 
com emergence and then follow with a postemergence 
application of STEADFAST®. Apply products such as 
DuPont™ CINCH®, "Balance" PRO, "Axiom", "Dual" II 
Magnum, "Surpass", "Frontier" and "Harness" Xtra at as low as 
114 to 112 of the full labeled use rate and follow with a 
sequential postemergence application of STEADFAST®. Refer 
to WHEN TO APPLY - POSTEMERGENCE and ENVIRON­
MENTAL CONDmONS AND BIOLOGICAL ACTIVITY 
sections for complete application information and precautions. 
Refer to the preemergence grass herbicide label for use 
restrictions, application information, rotational crop guidelines, 
and cautionary statements prior to applying STEADFAST®. 
Do not apply STEADFAST® to com that exhibits herbicide 
injury from previous applications made to the current or 
preceding crop. 
TANK MIX APPLICATIONS 
Application of STEADFAST® tank mixtures containing 
atrazine and/or dicamba (in some states) are limited to corn 
that is up to 12" tall, up to and including 5 leaf collars, 
whichever is most restrictive. See TANK MIXTURES 
WITH "DISTINCT" OR DICAMBA for additional 
information. Refer to the table below for weeds controlled 
using preferred tank mixtures. 
4 
1~\0 
For Additional Control of BroadleafWeeds 
STEADFAST® may be tank mixed with the herbicides below 
for additional control of broadleaf weeds. See the tank mix 
partner label for weeds controlled, precautions, use' restrictions 
and crop rotation information. 
Crop oil concentrate must be used in the tank mixtures specified 
below. The use of nonionic surfactant is permitted in place of 
crop oil concentrate for tank mixtures containing dicamba, 
however, overall weed control may be reduced. See SPRAY 
ADJUVANTS for adjuvant rate recommendations. 
Rate/A 
atrazine 90DF 4 - 35 oz 
dicamba (e.g .. "Clarity" - 4lb/gal dicamba) 2 - 4 fl oz 
dicamba + atrazine (e.g. "Marlcsrnan" 
- l.l Ib/gal dicamba) 
"Distinct" 
"Callisto" 
"Hornet" WOO 
8 -16 floz 
1.0 - 2.0oz 
1.5 - 3.0 fl oz 
2.0 - 3.0 oz 
Rates listed are for the specific products noted in the table. If 
other brands or formulations are used, rates of active ingredients 
should be adjusted to correspond to the products indicated. 
Formulations of products other than those listed may not have 
been tested with STEADFAST®. Check with the manufacturer 
for information on tank mix compatibility prior to using (see 
TANK MIX COMPATIBILITY TESTING). 
The table below indicates weeds controlled using preferred tank 
mixtures. 
STEAD- + + 2 oz. + 1 pt + 2.0 oz. + 1I21b +2 oz 
Broadleaf FAST® 4 oz. "Dis- "Marks- "Hornet" atra- ''CaII-
Weeds Alone "Clarity" tinct" man" WDG line isto"t 
Cocklebur. 
common 
Dandelion 
Kochia 
Ladysthumb 
Lambs-
quarters, 
common 
Mallow, 
venice 
Nightsbade, 
eastern black 
Ragweed, 
common 
Ragweed, 
giant 
Smartweed, 
PA 
Velvetleaf 
Waterhemp, 
common, 
tall 
-Suppression 
4'" 
8" 
4"-
2"-
4'" 
4'" 
2'" 
4" 4" 
10" 10" 
4"' 4"-
4'" 4'" 
4" 4" 
2" 2" 
4" 4" 
4'" 4"-
4" 4" 
4" 4" 
2" 2" 
--Requires the addition of 4 oz a.i. atrazine 
4" 4" 4" 4" 
10" 10" 10" 10" 
4'" 4"** 
4"- 4" 4'" 4" 
4" 2"- 4" 4" 
4" 4"** 
4" 2"- 2" 4" 
4" 4" 4" 4"** 
4"- 4" 4"- 4" 
4" 4" 4" 4" 
4" 4" 2" 4" 
4" 2"- 2" 4" 
•••• tSee "Callisto" tank mix chart on next page .. 
•••••• • ••• • •• Unless noted elsewhere in this labet all1:4 mixtures ~n the 
table above require the addition of CJQ9 jilv~once~ak! :m .... . .. ammonium nitrogen fertilizer as notedh S .. RAY •• ••• ADJUVANTS •• • 
• •••••• •• • • ii:~~iJ!9~.·H)t~:M~q···ilij~~i~t[!I~~~i(~:~~trig,·.'!T~" .• ~i.:;]: 
•• ,§J]~~r~~~~\mt.h>L9('?~r,ce~ ~,',€a1lisfo"/.: :~i~ ~t~:" 
•••• • • ••••

ADDITIONAL DIRECTIONS AND/OR 
DIRECTIONS FOR SPECIFIC WEED PROBLEMS 
Tank Mixtures with Atrazine 
DuPont™ STEADFAST® may be tank mixed with 114 - 2 
pounds ai. atrazine* for additional control of many broadleaf 
weeds, including: 
Weed beil:bt at application 
Sicklepod 1 - 2 inches 
Prickly sida 1 - 2 inches 
Wild Radish 6 - 12 inches 
Cutleaf evening primrose 4 - 6 inches 
Florida pusley 1 - 2 inches 
-For best results add 0.25 - 2.0 quarts atrazine 4L OR 4 - 35 ounces atrazine 
90DF. Products containing atrazine are restricted use products. 
STEADFAST® + atrazine tank mix may result in reduced 
control of grasses (antagonism) if applied to grasses under low 
moisture-stress or to grasses exceeding the maximum labeled 
height. Before applying STEADFAST® + atrazine tank mix, 
refer to the atrazine product label for information regarding the 
maximum amount of atrazine that may be applied in a season. 
Tank Mixtures with "Callisto" 
STEADFAST® may be tank mixed with 1.5 - 3.0 fluid 
ounces/acre of "Callisto" herbicide for weed control as indicated 
in the table below: 
Maximum Weed Height (in inches) 
Species 
Cocklebur 
Dandelion 
Jimsonweed 
Kochia 
Lambsquarters, 
common 
Morningglory 
annual 
Mustard, wild 
Nightshade, 
black 
Nightshade, 
eastern black 
Pigweed, 
palmer 
Pigweed, 
redroot 
Ragweed 
common 
Ragweed, 
giant 
Smartweed, 
ladysthumb 
Smartweed, 
Pennsylvania 
Sunflower, 
common 
Velvetleaf 
Waterhemp, 
"Callisto" alone "Callisto" + atrazine* 
1.50z 2.00z 3.00z 1.5 oz 2.00z 3.00z 
4" 4" 4" 10" 10" 10" 
10" 10" 10" 10" 10" 10" 
4" 4" 4" 4" 10" 10" 
4" 4" 4" 
4" 4" 4" 10" 10" 10" 
4" 4" 4" 4" 4" 4" 
4" 10" 
4" 4" 4" 10" 10" 10" 
4" 4" 4" 10" 10" 10" 
4" 4" 4" 10" 
4" 4" 4" 10" 10" 10" 
4" 10" 10" 
3" 4" 4" 10" 10" 
4" 4" 4" 10" 10" 
4" 4" 4" 4" 10" 10" 
4" 4" 4" 4" 4" 10" 
4" 4" 4" 10" 10" 10" 
tall & common -- 4" 4" 4" 10" 10" 
*Plus 0.25 to 0.75 pound a.i. atrazine per acre, may provide better 
control when weeds are at maximum height. 
For improved grass and broadleaf weed control, STEADFAST® 
tank mixtures with 1.5 ounces "Callisto" (with or without 
atrazine) may be applied with 0.5 % v/v MSO spray adjuvant. 
5 
;i:1~~~~~fe~~~;~~ 
Tank Mixtures with "Distinct" or Dicamba 
In situations where the use of crop oil concentrate with growth 
regulator heibicides is not desirable (e.g. extremely cold 
weather), STEADFAST® may be tank mixed with 2 ounces 
"Distinct" + a nonionic surfactant at 0.25% v/v (1 quart/IOO 
gallons spray solution) in place of crop oil concentrate, but 
overall weed control may be reduced. 
Tank mixture applications of STEADFAST® with herbicides 
containing dicamba (e.g. 1-2 ounces "Distinct" and 4 fluid 
ounces "Clarity") should be limited to com that is up to 12" tall, 
up to and including 5 leaf collars, whichever is most restrictive, 
except for the states east of the line formed by the western 
borders ofMI, IN, KY, TN, and MS, and except where noted in 
local DuPont Technical Bulletins. In these states the upper com 
size limits are 20" tall, up to and including 6 leaf collars. 
Tank Mixtures with "Exceed" or "Spirit" 
STEADFAST® may be tank mixed with 0.5 ounces of 
"Spirit" or 0.125 ounces of "Exceed" herbicides for 
additional control of velvetleaf, COrnnlon and giant ragweed, 
lambsquarters, ivy leaf momingglory, PA smartweed, and 
sunflower. Applications must be made to emerged field com 
before the com is 12" tall or is exhibiting 6 leaf collars, 
whichever is the more restrictive. 
For Additional Control of Crabgrass and Later Emerging 
Grasses 
STEADFAST® may be tank mixed with full or reduced rates of 
preemergence grass heibicides labeled for early postemergence 
application to field com (such as DuPont™ CINCH®, "Prowl", 
"Surpass" EC, "Dual" II Magnum, and "Outlook") for increased 
residual activity of later-emerging flushes of grasses such as 
smooth and large crabgrass. Application must be made before 
the crabgrass emerges and before other grass weeds on the 
STEADFAST® label exceed their labeled sizes. 
For Additional Control of BroadleafWeeds 
STEADFAST® may be tank mixed with 2 pints per acre of 
"Lumax" or 2 113 pints of "Lexar" for improved bumdown or 
residual control of several broadleaf weeds including common 
water'hemp, common ragweed, common lambsquarters, and 
velvetleaf. When applying mixtures of STEADFAST®.W1tllt 
"Lumax" or "Lexar" the use of a no~oP-i.c.~actant.ii : • 
recommended. Refer to "Lumax" or:Le$r'!labels for • 
additional information regarding application timing,.OO1k • 
. d· d· al --.-.... .... IlllXtures, a ~uvants, an rotatIon CIUp~. •• • 
• • • For Additional Control of BroadleafWeetlt :. • • 
- "~."t· •• STEADFAST® may be tank mixed Wl~.) ~ 0.75 fluid. 
ounces per acre of "Impact" plus -atr~:!t~.375 to J.5 popnds 
active per acre for improved bumdown or residual co~ft-~r~t 
several broadleaf weeds including common waterhem{l, ••• 
common ragweed, common lambsquarters, and velve'bem .. • 
When applying mixtures of STEADFAST® plus "Impact" at 0.5 
fluid ounces per acre the use of methylated seed oil is

recommended. Refer to "Impact" label for additional 
information regarding application timing, tank mixtures, 
adjuvants, and rotational crops. 
Whe~ taiik.;~xing D~PontTM STEADE 
;Jeirmullited' ;eemer ence"'rass' he~biCidisi' 
\i~····~~~'~li~~~ll~~; 
;illiiilli'~'~f~~fii" 
Tank mixes of STEADFAST® and preemergence grass 
herbicides must be broadcast applied postemergence to field 
corn before the crop exceeds the heights listed on the 
preemergence grass herbicide label. Refer to WHEN TO 
APPLY-POSTEMERGENCE and the preemergence grass 
herbicide label for complete postemergence application 
information, rates, and restrictions. 
For Additional Control of Palmer Pigweed (Amaranth) in the 
states of CO, KS and OK 
STEADFAST® may be tank mixed with 2.0 - 3.0 ounces 
a.i./acre of dicamba (e.g. 4.0 - 6.0 fluid ounces/acre of "Clarity") 
and crop oil concentrate for additional control of palmer 
pigweed. Applications must be made to corn that is 4 - 8" tall 
and is exhibiting fewer than 4 leaf-collars. 
For Additional Control ofYeliow Nutsedge 
STEADFAST® may be tank mixed with up to 0.66 ounce/acre 
"Permit" herbicide or up to 4 ounces ''Yukon'' herbicide for 
control of yellow nutsedge. Applications must be made before 
the corn exhibits 6 leaf collars or is 12" tall, whichever is the 
more restrictive. Consult the "Permit" or "Yukon" labels for 
additional weeds controlled. Always add COC and ammonium 
nitrogen fertilizer. 
6 
For Additional Control of Kochia 
STEADFAST® may be tank mixed with 113 to 213 pint per acre 
of "Starane" for improved control of kochia. Use higher rates 
when weed infestation is heavy. Refer to the specific "Starane" 
label for application timing and restrictions. 
Tank mixtures with insecticides 
STEADFAST® may be tank mixed with pyrethroid or 
carbamate insecticides such as DuPont™ ASANA® XL or 
DuPont™ LANNATE® insecticides. 
Other than the exceptions noted, and in addition to the tank mix 
partners and rates indicated above, STEADFAST® may be tank 
mixed or followed with sequential applications of other products 
registered for use in field corn. STEADFAST® may be applied 
in tank mix combinations with full or reduced rates of other 
products provided: 
o The tank mix product is labeled for the same timing, method 
of application, adjuvants, and use restrictions as 
STEADFAST®. 
o The tank mixture is not specifically prohibited on the label of 
the tank mix product 
o The tank mix combination is compatible as determined by a 
'jar test" described in the TANK MIX COMPATmILITY 
TESTING section below. . 
Tank Mixing Precautions: 
o Weed control and crop response with tank mixtures not 
specifically recommended in this label are the responsibility 
of the user and manufacturer of the tank mix product. •••• 
o Read and follow all applicable use.~~W1s, pre_di.ms, 
and limitations specified on the retec¢Ve~roduct lablils and 
fact sheets. - • _ • -
•••••• ••• 
o Do not exceed labeled application ratt.~ not tafIk lIM 
STEADFAST®with other products thlfttontain tl.t! ~~ 
active ingredients as STEADFAS1W OIt<!biulfuro/\ ancT­
rirnsulfuron) unless the label of eitlltd<¥¥c-mix partner-• • specifies the maximum rate that may be used. : • - - - • 
o A corn plant's predisposition to develop fused tissu~ing 
from the whorl (rattail) after the V-II stage may in!:Jl:Q(Jt 
when a product containing dicamba (i.e. "Clarity", 
"Marksman") is applied to small corn under early stressful

conditions. Be aware of this when applying tank mixes with 
dicamba to small com (V-3 stage or smaller) under stressful 
conditions. See ENVIRONMENTAL CONDmONS for a 
description of these stressful conditions. 
TANK MIX COMPATIBILITY TESTING 
Perform a jar test prior to tank mixing to ensure compatibility of 
DuPont™ STEADFAST® and other pesticides. Use a clear 
glass quart jar with lid and mix the tank mix ingredients in their 
relative proportions. Invert the jar containing the mixture several 
times and observe the mixture for approximately 112 hour. If 
the mixture balls-up, forms flakes, sludges, gels, oily film or 
layers, or other precipitates, it is not compatible and the tank 
mix combination should not be used. 
SEQUENTIAL DUPONTTM ACCENT® 
APPLICATIONS 
Apply ACCENT® herbicide 14 or more days after 
STEADFAST® applications to control grasses that may 
emerge later in the season. Refer to the ACCENT® label for 
grass species controlled, proper size of weeds, rates, com 
sizes, and other information. When following a 
STEADFAST® application, do not use more than 2/3 ounce 
ACCENT® per acre. 
:,il"'I~.~~ 
CULTIVATION 
A timely cultivation may be necessary to control suppressed 
weeds, or weeds that emerge after an application of 
STEADFAST® in the absence of an activating rainfall. 
Optimum timing for cultivation is 7-14 days after 
STEADFAST® 'application or upon seeing the establishment 
of new weeds. 
ENVIRONMENTAL CONDITIONS 
AND BIOLOGICAL ACTIVITY 
STEADFAST® provides best results when applied to young, 
actively growing weeds. Applications made during warm, 
moist conditions (70°F or more) and adequate soil moisture 
both before and after application maximizes performance. 
The degree and duration of control depend on spray coverage, 
activating rainfall, weed spectrum, weed size, growing 
conditions before and after treatment, soil moisture, and 
adjuvant selection. 
Adequate soil moisture is required for optimum activity. 
Rainfall within 5-7 days will enhance STEADFAST® residual 
activity. A timely cultivation may be required for maximum 
weed control without an activating rain. 
STEADFAST® is rainfast in 4 hours. 
Treating weeds that exceed maximum label height or that are 
under stress may result in incomplete control. Poor weed control 
or crop injury may result from applications made to plants under 
stress from: 
\oo\'\~ 
• abnormally hot or cold weather 
• environmental conditions such as drought, water-saturated 
soils, hail damage, or frost 
• disease, insect, or nematode injury 
• prior herbicide, or carryover from a previous year's herbicide 
application 
Severe stress from conditions immediately following application 
may also result in crop injury or poor weed control. Stress 
affects all weeds, but especially weeds such as woolly cupgrass, 
.green and yellow foxtail, and wild proso millet. 
7 
If the com or grass weeds are under stress, delay application 
until stress passes and both weeds and com resume active 
growth. 
Apply STEADFAST® when minimum nighttime temperatures 
are above 40°F and the maximum daytime temperatures are 
below 92°F to maximize performance and minimize the 
potential for crop injury. 
Applications made during or immediately following periods of 
large day/night temperature fluctuations or where daytime 
temperatures do not exceed 50°F may decrease weed control 
and increase the potential for crop injury. 
STEADFAST® rapidly inhibits the growth of susceptible 
weeds, reducing weed competition within as little as 6 hours 
after application. Susceptible plants are controlled in 7-21 days. 
Ground application of STEADFAST® to dry, dusty fields may 
reduce weed control in wheel track areas. 
SOIL INSECTICIDE 
INTERACTION INFORMATION 
Before'usiri' c'STEADFAST®;'ensiire't1iai·'ifis"com'ii.tible'i' 
~~l;W~~~~~~m~~:~;~~,~~1~!~ij~i~~!t:~~~~~q~~~!~;~~!,~~.;~t~~:lf5'W:!i: 
STEADFAST® may interact with certain insecticides 
previously applied to the crop. Crop response varies.v;;ililfield 
com type, insecticide used, insecti~i~~ ~e~licatiou _od, 
and soil type. : :: • 
STEADFAST® may be applied to com Rreviousl:uea~d 
with "Fortress" "Aztec" or "Force"·i:;e~~cides er ;<'J1L • , , . . 
organophosphate (OP) soil insecticides ... egardles~~f.so'l.type. 
• DO NOT APPLY STEADFAST® ~~ ~~rn..previously treated 
with "Counter" 15G or to com tre:tte:~th"Coupter~ ,,-OCR 
infurrow or over the row at cultivation. : • •••• 
·Applications of STEADFAST® to com previous~ ... at~d 
with "Counter" 20 CR, "Lorsban", or "Thimet" mit)" e:!Use 
unacceptable crop injury, especially on soils of less than 4% 
organic matter. 
CROP ROTATION 
Rotational crops vary in their response to low concentrations of 
STEADFAST® remaining in the soil. STEADFAST® 
dissipates rapidly in warm, acidic, microbiologically active soils. 
The amount of STEADFAST® which may be present in the soil 
depends on soil pH and organic matter content, elapsed time 
since application, crop production practices, and environmental 
factors.

Injury to rotational crops may occur in high-pH, cold soils if dry 
weather prevails between application and rotational crop 
planting. 
For fields treated with sequential applications of DuPont™ 
STEADFAST® and DuPont™ ACCENT® herbicide, consult 
the crop rotation intervals listed on the ACCENT® and 
STEADFAST® labels. Use the most restrictive recrop interval 
from either label. 
The following rotational intervals must be observed when using 
STEADFAST®: 
STEADFAST® ROTATIONAL CROP GUIDELINE - 1 
No soil pH restrictions 
Crop Rotational 
Com (field) 
Com (pop, sweet, seed)* 
Soybeans 
Cereals, spring (barley, oats, rye, wheat) 
Cereals, winter (barley, oats, rye, wheat) 
Canola** 
Cotton 
Dry Beans, Snap Beans 
Alfalfa**t 
Aax** 
Red Clover** 
Peas 
Potato** 
Sunflower** 
Other Crops 
Interval in Months 
Anytime 
10 
0.5 (15 days) 
8 
4 
10 
10 
10 
10 
10 
10 
10 
10 
10 
See Rotational Crop 
Guideline 2 
* Except the sweet com varieties "Merit", "Carnival", and "Sweet Success", for 
which the minimum time interval is 15 months. 
**Rotational intervals should be extended to 18 months if drought conditions 
prevail after application and before the rotational crop is planted, unless 
sprinkler irrigation has been applied and totals greater than 15" during the 
growing season. 
t On sprinkler irrigated fields in Idaho, Utah, and Northern Nevada it is best to 
use deep fall tillage such as plowing prior to planting alfalfa. Product 
degradation may be less on furrow irrigated soils and may result in some crop 
injury. 
STEADFAST® ROTATIONAL CROP GUIDELINE - 2 
Crops With soil pH restrictions 
Rotational Interval in Months 
Crop Soil pH - < 6.5 6.5 - 7.5 >7.5 
Sorghum 10 10 18* 
Sugarbeets*** 10 180 • 18 
All other crops 10 18 18 
* Except in Texas and Oklahoma east of Highway 281, where the rotational 
interval is 10 months, regardless of pH. 
.* Except on irrigated sites in Colorado, Wyoming, Nebraska, Texas, or in 
Minnesota east and south of the Red River Valley, Michigan, and Ohio, 
where precipitation and/or irrigation following application must exceed 
25" prior to planting beets, where the interval is 10 months on soils 
with pH < 7.5. In the States of Colorado, Wyoming, and Nebraska, 
temporary crop response, stunting and/or crop injury may occur if soil 
pH is > 7.5, or precipitation and/or irrigation following application is 
less than 25" prior to planting sugarbeets. 
**·In North Dakota and northwest Minnesota, the cumulative precipitation 
. and/or irrigation following in the 18 months following application must 
exceed 28" in order to rotate to sugarbeets. 
APPLICATION INFORMATION 
Many crops are highly sensitive to STEADFAST®. All 
direct or indirect contact (such as spray drift) with crops 
other than field com should be avoided (see also SPRAY 
DRIFT MANAGEMENT). 
For all application systems, use 50-mesh or larger strainer 
screens. 
8 
Do not apply. STEADFAST® through any type of irrigation 
system. 
GROUND APPLICATION 
Broadcast Application 
Use a minimum of 15 gallons of water per acre (GPA) to 
ensure thorough coverage of the weeds and the best 
performance. Use a minimum of 10 GPA for light, scattered 
stands of weeds 
For best performance, select nozzles and pressure that 
deliver MEDIUM spray droplets, as indicated, for example, 
by ASAE Standard S572. Nozzles that deliver COARSE 
spray droplets may be used to reduce drift, provided spray 
volume is increased to maintain coverage on small weeds. 
For optimal product performance and minimal spray drift, 
adjust the spray boom to the lowest possible spray height 
recommended in manufacturers' specifications. 
Ensure that equipment is set up to avoid applying an 
excessive rate directly over the rows and into the com plant 
whorl. Overlaps or starting, stopping, slowing, and turning 
while spraying may result in crop injury. 
Band Application 
For band applications, use proportionately less spray 
mixture. To avoid crop injury, carefully calibrate the band 
applicator to not exceed the labeled rate. Carefully follow 
the manufacturer's instructions for nozzle type (flat fans), 
orientation, distance of nozzles from the crop and weeds, 
spray volumes, calibration and spray pressure. 
AERIAL APPLICATION 
Aerial application is not permitted in New York State or 
California. 
Use nozzle types and arrangements that will provide 
optimum spray distribution and maximum coverage at a 
minimum of 5 GPA. 
•••• 
Do not apply during a temperatur~ Ju"enion, wpe4 ;vinds 
are gusty, or when conditions fav~r p~r)::overage ilild/or 
off-target spray movement. • • ••• 
•••••• ••• SPRAYER PREPARATIONlCL.E~NUP •• •• ••• 
It is important that spray equipmenti~<olWl and fr& ot ~vious 
pesticide deposits before using STEAIt<'A~® and thea 
properly cleaned out following appl~MO'n. Clean ail aoolication •• ,"i •• 
equipment before applying STEADFAST®. Follo .. the cleanup 
procedures specified on the label of the product pre¥itJtl!l, • 
sprayed. If no cleanup procedure is provided, use the~&dure 
that follows. Immediately following applications of 
STEADFAST®, thoroughly clean all mixing and spray 
equipment to avoid subsequent crop injury. 
Note: 
• When cleaning spray equipment before applying 
STEADFAST®, read and follow label directions for proper 
rinsate disposal of the product previously sprayed. 
• Steam cleaning of aerial spray tanks will help to dislodge any 
visible pesticide deposits. 
• When spraying or mixing equipment will be used over an 
. extended period to apply multiple loads of STEADFAST®,

partially fill the tank with fresh water at the end of each day of 
spraying, flush the boom and hoses, and allow to sit 
overnight. 
Cleanup Procedure 
I. Drain the tank and thoroughly hose down the interior 
surfaces. Flush the tank, hoses, and boom with clean 
water for a minimum of 5 min. 
2. Partially fill the tank with clean water and add one gallon 
of household ammonia* (contluning 3% active) for every 
100 gallons of water. Finish filling the tank with water, 
then flush the cleaning solution through the hoses, boom, 
and nozzles. Add more water to completely fill the tank 
and allow to agitate/recirculate for at least IS min. Again, 
flush the hoses, boom, and nozzles with the cleaning 
solution, then drain the tank. 
3. Repeat Step 2. 
4. Remove the nozzles and screens and clean separately in a 
bucket containing the cleaning agent and water. 
5. Thoroughly rinse the tank with clean water for a 
minimum of 5 min, flushing the water through the hoses 
and boom. 
* Equivalent amounts of an alternate strength ammonia solution or a 
tank cleaner recommended in the DuPont bulletin "Sulfonylurea 
Herbicides, A Guide to Equipment Cleanout," may be used. 
SPRAY DRIFT MANAGEMENT 
The interaction of many equipment and weather-related 
factors determines the potential for spray drift. The 
applicator is responsible for considering all these factors 
when making application decisions. 
AVOIDING SPRAY DRIFT IS THE RESPONSIBILITY 
OF THE APPLICATOR. 
IMPORTANCE OF DROPLET SIZE 
The most effective way to reduce drift potential is to apply 
large droplets (>150 - 200 microns). The best drift 
management strategy is to apply the largest droplets that 
provide sufficient coverage and control. The presence of 
sensitive species nearby, the environmental conditions, and 
pest pressure may affect how an applicator balances drift 
control and coverage. APPLYING LARGER DROPLETS 
REDUCES DRIFT POTENTIAL, BUT WILL NOT 
PREVENT DRIFT IF APPLICATIONS ARE MADE 
IMPROPERLY OR UNDER UNFAVORABLE ENVIRON­
MENTAL CONDITIONS! See Wind, Temperature and 
Humidity, and Temperature Inversions sections of this 
label. 
Controlling Droplet Size - General Techniques 
• Volume - Use high flow rate nozzles to apply the highest 
practical spray volume. Nozzles with higher rated flows 
produce larger droplets. 
• Pressure - Use the lower spray pressures recommended 
for the nozzle. Higher pressure reduces droplet size and 
does not improve canopy penetration. WHEN HIGHER 
FLOW RATES ARE NEEDED, USE A HIGHER­
CAPACITY NOZZLE INSTEAD OF INCREASING 
PRESSURE. 
• 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. 
Controlling Droplet Size - Aircraft 
• Number of Nozzles - Use the minimumnumber of 
nozzles with the highest flow rate that provide uniform 
coverage. 
• Nozzle Orientation - Orienting nozzles so that the spray 
is emitted.backwards, parallel to the airstream will 
produce larger droplets than other orientations. 
• Nozzle Type - Solid stream nozzles (such as disc and core 
with swirl plate removed) oriented straight back produce 
larger droplets than other nozz!e types. 
• Boom Length - The boom length should not exceed 3/4 
of the wing or rotor length - longer booms increase drift 
potential. 
• Application Height - Application more than lOft above 
the canopy increases the potential for spray drift. 
BOOM HEIGHT 
Setting the boom at.the lowest labeled height (if specified) 
which provides uniform coverage reduces the exposure of 
-' droplets to evaporation and wind. For ground equipment, 
the boom should remain level with the crop and have 
minimal bounce. 
9 
WIND 
Drift potential increases at wind speeds of less than 3 mph 
(due to inversion potential) or more than 10 mph. However, 
many factors, including droplet size and equipment type 
determine drift potential at any given wind speed. AVOID 
GUSTY OR WINDLESS CONDITIONS. 
Note: Local terrain can influence wind patterns. Every 
applicator should be familiar with local wind patterns and 
how they affect spray drift. 
TEMPERATURE AND HUMIDITY •••• • When making applications in hot tlIlri 41~ conditoi~I'I:f, set up 
~ .. equipment to produce larger droPfts 00 ~duce effects of 
evaporation. • • • • • • : •• •• 
TEMPERATURE INVERSI0NB.. : :..: 
Drift potential is high during a tefQgqi~re invetsi~l\o. • 
Temperature inversions restrict verti~ aO- mixing, vehich 
causes small suspended droplets t~ UrMin close.to th<t ., .... ground and move laterally in a concentrated clooo. 
Temperature inversions are characterized by inc~eMifl~. 
temperature with altitude and are common on nigl\t~ ... ith 
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.

SHIELDED SPRAYERS 
Shielding the boom or individual nozzles can reduce the 
effects of wind. However, it is the responsibility of the 
applicator to verify that the shields are preventing drift and 
not interfering with unifonn deposition of the product. 
INTEGRATED PEST MANAGEMENT 
This product may be used as part of an Integrated Pest 
Management (IPM) program that can include biological, 
cultural, and genetic practices aimed at preventing economic 
pest damage. IPM principles and practices include field· 
scouting or other detection methods, correct target pest 
identification, population monitoring, and treating when 
target pest populations reach locally detennined action 
thresholds. Consult your state cooperative extension service, 
professional consultants or other qualified authorities to 
detennine appropriflte action treatment threshold levels for 
treating specific pest/crop systems in your area. 
RESISTANCE 
When herbicides that affect the same biological site of 
action are used repeatedly over several years to control the 
same weed species in the same field, naturally-occurring 
resistant biotypes may survive a correctly appliedberbicide 
treatment, propagate, and become dominant in that field. 
Adequate control of these resistant weed biotypes cannot be 
expected. If weed control is unsatisfactory, it may be 
necessary to retreat the problem area using a product 
affecting a different site of action. 
To better manage herbicide resistance through delaying the 
proliferation and possible dominance of herbicide resistant 
weed biotypes, it may be necessary to change cultural 
practices within and between crop seasons such as using a 
combination of tillage, retreatment, tank-mix partners 
and/or sequential herbicide applications that have a different 
site of action. Weed escapes that are allowed to go to seed 
will promote the spread of resistant biotypes. 
It is advisable to keep accurate records of pesticides applied 
to individual fields to help obtain infonnation on the spread 
and dispersal of resistant biotypes. Consult your 
agricultural dealer, consultant, applicator, and/or appropriate 
state agricultural extension service representative for 
specific alternative cultural practices or herbicide 
recommendations available in your area. 
IMPORTANT PRECAUTIONS 
Injury to or loss of desirable vegetation may result from failure 
to observe the following: 
• Do not apply DuPont™ STEADFAST® or drain or flush 
application equipment on or near desirable trees or other 
plants, or on areas where their roots may extend, or in 
locations where the chemical may be washed or moved into 
contact with their roots. 
• Do not use on lawns, walks, driveways, tennis courts, or 
similar areas. 
• Prevent drift of spray to desirable plants. 
• Do not contaminate any body of water. 
• Thoroughly clean application equipment immediately after 
use. (See the Sprayer Cleanup section of this label for 
instructions.) 
• Do not graze or feed forage, hay, or straw from treated areas 
to livestock Within 30 days of STEADFAST® application. 
10 
STORAGE AND DISPOSAL 
Do not contaminate water, food, or feed by storage 
and disposal. 
Pesticide Storage: Store product in original container 
only. Do not contaminate water, other pesticides, 
fertilizer, food or feed in storage. Store in a cool, dry 
place. 
Pesticide Disposal: Waste resulting from the use of 
this product must be disposed of on site or at an 
approved waste disposal facility. 
Container Handling: Refer to the Net Contents 
section of this product's labeling for the applicable 
''NonrefIllable Container" or "RefIllable 
Container" designation. 
NonrefIllable Plastic and Metal Containers 
(Capacity Equal to or Less Than 50 Pounds): 
Nonrefillable 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 114 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, for Plastic 
Containers, offer for recycling if available or puncture 
and dispose of in a sanitary landfill, or by incineration. 
Do not bum, unless allowed by state and local 
ordinances. For Metal Containers, offer for recycling 
if available or reconditioning if appropriate, or 
puncture and dispose of in a sanitary landfill, or by 
other procedures approved by state and local 
authorities. •••• 
Nonre~llable Plastic and Me~l. ~pvtainers •• :. 
(Capacity Greater Than 50 P .. undS)'Nonrefilla~le 
container. Do not reuse or refi1l1his·coltainer. Triple 
rinse container (or equivalent) IV"~~Ll~ after:·. •• 
emptying. Triple rinse as follows: ~mlty the· • • 
remaining contents into application et'luipmens ~f, a· • 
mix tank. Fill the container 114 a.i.I. w.th watelll • • 
Replace and tighten closures. Tip ~ntlG.ner on its aide 
and roll it back and forth, ensurrttt~ '!east on~ • 
complete revolution, for 30 seconds. Stand tht; • • • •• 
container on its end and tip it back and forth several 
times. Tum the container over onto its other eItd and • 
tip it back and forth several times. Empty the riMaM 
into application equipment or a mix tank or store 
rinsate for later use or disposal. Repeat this procedure 
two more times. Then, for Plastic Containers, offer for 
recycling if available or puncture and dispose of in a 
sanitary landfill, or by incineration. Do not bum, 
unless allowed by state and local ordinances. For 
Metal Containers, offer for recycling if available or 
reconditioning if appropriate, or puncture and dispose 
of in a sanitary landfill, or by other procedures 
approved by state and local authorities.

NonrefIllable Plastic and Metal Containers, e.g., 
Intermediate Bulk Containers [mC] (Size or Shape 
Too Large to be Tipped, Rolled or Thrned Upside 
Down): Nonrefillable container. Do not reuse or refill 
this container. Clean container promptly after 
emptying the contents from this container into 
application equipment or mix tank and before final 
disposal using the following pressure rinsing 
procedure. Insert a lance fitted with a suitable tank 
cleaning nozzle into the container and ensure that the 
water spray thoroughly covers the top, bottom and all 
sides inside the container. The nozzle manufacturer 
generally provides instructions for the appropriate 
spray pressure, spray duration and/or spray volume. If 
the manufacturer's instructions are not available, 
pressure rinse the container for at least 60 seconds 
using a minimum pressure of 30 PSI with a minimum 
rinse volume of 10% of the container volume. Drain, 
pour or pump rinsate into application equipment or 
rinsate collection system. Repeat this pressure rinsing 
procedure two more times. Then, for Plastic 
Containers, offer for recycling if available or puncture 
and dispose of in a sanitary landfill, or by incineration. 
For Metal Containers, offer for recycling if available 
or reconditioning if appropriate, or puncture and 
dispose of in a sanitary landfill, or by other procedures 
approved by state and local authorities. 
NonrefIllable Paper or Plastic Bags, Fiber Sacks 
including Flexible Intermediate Bulk Containers 
(FmC) or Fiber Drums With Liners: Nonrefillable 
container. Do not reuse or refill this container. 
Completely empty paper or plastic bag, fiber sack or 
drum liner by shaking and tapping sides and bottom to 
loosen clinging particles. Empty residue into 
application or manufacturing equipment. Then offer 
for recycling if available or dispose of empty paper or 
plastic bag, fiber sack or fiber drum and liner in a 
sanitary landfill, or by incineration. Do not bum, 
unless allowed by state and local ordinances. 
Refillable Fiber Drums With Liners: Refillable 
container (fiber drum only). Refilling Fiber Drum: 
Refill this fiber drum with DuPont™ STEADFAST® 
herbicide containing nicosulfuronand rimsulfuron 
only. Do not reuse this fiber drum for any other 
purpose. Cleaning before refilling is the responsibility 
of the refiller. Completely empty liner by shaking and 
tapping sides and bottom to loosen clinging particles. 
Empty residue into application or manufacturing 
equipment. Disposing of Fiber Drum and/or Liner: Do 
not reuse this fiber drum for any other purpose other 
than refilling (see preceding). Cleaning the container 
(liner and/or fiber drum) before final disposal is the 
responsibility of the person disposing of the container. 
Offer the liner for recycling if available or dispose of 
liner in a sanitary landfill, or by incineration. Do not 
bum, unless allowed by state and local ordinances. If 
drum is contaminated and cannot be reused, dispose of 
it in the manner required for its liner. To clean the fiber 
drum before final disposal, completely empty the fiber 
drum by shaking and tapping sides and bottom to 
loosen clinging particles. Empty residue into 
application or manufacturing equipment. Then offer 
the fiber drum for recycling if available or dispose of 
in a sanitary landfill, or by incineration. Do not bum, 
unless allowed by state and local ordinances. 
All Other RefIllable Containers: Refillable 
container. Refilling Container: Refill this container 
with STEADFAST® herbicide containing 
nicosulfuron and rimsulfuron only. Do not reuse this 
container for any other purpose. Cleaning before 
refilling is the responsibility of the refiller. Prior to 
refilling, inspect carefully for damage such as cracks, 
punctures, abrasions, worn out threads and closure 
devices. If damage is found, do not use the container, 
contact DuPont at the number below for instructions. 
Check for leaks after refilling and before transporting. 
If leaks are found, do not reuse or transport container, 
contact DuPont at the. number below for instructions. 
Disposing of Container: Do not reuse this container 
for any other purpose other than refilling (see 
preceding). Cleaning the container before final 
disposal is the responsibility of the person disposing of 
the container. To clean the container before final 
disposal, use the following pressure rinsing procedure. 
Insert a lance fitted with a suitable tank cleaning 
nozzle into the container and ensure that the water 
spray thoroughly covers the top, bottom and all sides 
inside the container. The nozzle manufacturer 
generally provides instructions for the appropriate 
Spray pressure, spray duration and/or spray volume. If 
the manufacturer's instructions are not available, 
pressure rinse the container for at least 60 seconds 
using a minimum pressure of 30 PSI with a minimum 
rinse volume of 10% of the container volume. Drain, 
pour or pump rinsate into application equipment or 
rinsate collection system. Repeat this pressure rinsing 
procedure two more times. Then, for Plastic 
Containers, offer for recycling if available or puncture 
and dispose of in a sanitary landfill, or by incineration. 
Do not bum, unless allowed by state and local 
ordinances. For Metal Containers, offer for recycling 
if available or reconditioning if appropriate, or 
puncture and dispose of in a sanitary landfill, or by 
other procedures approved by state and local 
authorities. 
Outer Foil Pouches of Water Soluble Packets 
(WSP): Nonrefillable container. Do not reuse or refill 
this container. Offer for recycling if available or,: • • • 
dispose of the empty outer foil OM~i%I the ~J:t !ts 
long as WSP is unbroken. If the:outer Couch cont~ts 
the formulated product in any w.ay. the J?ouch Vlust tl¥ 
triple rinsed with clean water. ~d'd!trte rinsateto t~ 
spray tank and dispose of the outef~~ttch as <lee;crilied 
previously. •• • •• : •••• 
Do not transport if this container i;da~aged or • 
leaking. If the container is damag~~~ teaking or • 
obsolete, or in the event of a major spill, fire <t·otRlr· 
emergency, contact DuPont at 1-800-441-3637 .. <W'.or 
night. • •••• • 
NOTICE TO BUYER: Purchase of this material does not 
confer any rights under patents of countries outside of the 
United States. 
The DuPont Oval Logo, DuPont™, STEADFAST®, 
ACCENT®, CINCH®, ASANA® and LANNATE® are 
trademarks or registered trademarks of E. I. duPont de 
Nemours and Company 
11

"Axiom", "Aztec" and "Balance" are trademarks or registered 
trademarks of Bayer Crop Protection 
"Basagran", "Clarity", "Counter", "Distinct", "Frontier", 
"Laddok", "Marksman", "Outlook", "Prowl" and ''Thimet'' are 
registered trademarks of BASF Ag Products 
"Callisto", "Dual", "Exceed", "Force", "Spirit", "Lexai"" and 
"Lumax" are trademarks or registered trademarks of Syngenta 
Crop Protection Inc. 
"Fortress" and "Impact" are registered trademarks of Amvac 
Chemical Corp. 
"Harness" and "Yukon" are registered trademarks of Monsanto 
Technology LLC 
"Hornet", "Lorsban", "Stinger': and "Surpass" are registered 
trademarks of Dow AgroSciences LLC 
"Permit" is a registered trademark of Nissan Chemical Industries, 
Ltd. 
D -1588 042110 
LIMITATION OF 
WARRANTY AND LIABILITY 
NOTICE: Read this 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. 
It is impossible to eliminate all risks associated with the 
use of this product. Such risks arise. from weather 
conditions, soil factors, off target movement, unconven­
tional farming techniques, presence of other materials, 
the manner of use or application, or other unknown 
factors, all of which are beyond the control of DuPont. 
These risks can cause: ineffectiveness of the product, 
crop injury, or injury to non-target crops or plants. 
WHEN YOU BUY OR USE THIS PRODUCT, YOU 
AGREE TO ACCEPT THESE RISKS . 
. DuPont warrants that this product conforms to the 
chemical description on the label thereof and is 
reasonably fit for the purpose stated in the Directions for 
Use, subject to the inherent risks described above, when 
used in accordance with the Directions for Use under 
normal conditions. 
TO THE EXTENT CONSISTENT WITH 
APPLICABLE LAW, DUPONT MAKES NO OTHER 
EXPRESS OR IMPLIED WARRANTY OF FITNESS 
OR OF MERCHANTABILITY OR ANY OTHER 
EXPRESS OR IMPLIED WARRANTY. TO THE 
EXTENT CONSISTENT WITH APPLICABLE LAW, 
IN NO EVENT SHALL DUPONT OR SELLER BE 
LIABLE FOR ANY INCIDENTAL, 
CONSEQUENTIAL OR SPECIAL DAMAGES 
RESULTING FROM THE USE OR HANDLING OF 
THIS PRODUCT. BUYER'S OR USER'S 
BARGAINED-FOR EXPECTATION IS CROP 
PROTECTION. TO THE EXTENT CONSISTENT 
WITH APPLICABLE LAW, THE EXCLUSIVE 
REMEDY OF THE USER OR BUYER AND THE 
EXCLUSIVE LIABILITY OF DUPONT OR SELLER, 
FOR ANY AND ALL CLAIMS, LOSSES, INJURIES 
OR DAMAGES (INCLUDING CLAIMS BASED ON 
BREACH OF WARRANTY OR CONTRACT, •••• 
NEGLIGENCE, TORT OR STRICT LIABILIT~~ 
WHETHER FROM FAILURE t~~J2Fo~ 1jl{ 
INJURY TO CROPS OR OTHI!R PL~S, AND· 
RESULTING FROM THE USE O~.ij~NDL~ OF. 
THIS PRODUCT, SHALL BE TAt RI!TURN>OF..,HE 
PURCHASE PRICE OF THE PR~~\)t:T, ORoAT 1lHE 
ELECTION OF DUPONT OR ~i:~U~R, Tint •••• 
REPLACEMENT OF THE PRODtJC,!! • 
To the extent consistent with appI1<!a'bte law thlit allows 
such requirement, DuPont or its Ag Retailer m1I~t~a"~ . 
prompt notice of any claim so that an immediaue ••• 
inspection of buyer's or user's growing crops c!n ~" • • 
made. Buyer and all users shall promptly notify l:)uPont 
or a DuPont Ag Retailer of any claims, whether based on 
contract, negligence, strict liability, other tort 'or 
otherwise, or be barred from any remedy. 
This Limitation of Warranty and Liability may not be 
amended by any oral or written agreement. 
For product information call: 1-888-6-DUPONT 
Internet address: http://cropprotection.duponLcom/ 
© 2000-2010 E. I. du Pont de Nemours and Company, 1007 Market Street, Wilmington, Delaware 19898. 
All rights reserved. 
12