# TOUGH 3.75 EC

- EPA Reg No: **100-875**
- Registrant: SYNGENTA CROP PROTECTION, LLC
- Signal word: Warning
- Active ingredients: Pyridate (43.5%)
- Label accepted: 2001-03-02
- Source PDF: https://www3.epa.gov/pesticides/chem_search/ppls/000100-00875-20010302.pdf

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- - /&10 -;'~g7,; PleiN fNd Instructions on reverse befo,,, com arm. .3/..;1. tJ/ po-rf£' / 2 1 
Unlled Statea 
§:== 
OPP Iden@er Number 
o EPA Environmental Protection Agency NOTIFICATION 
Washington, DC 20460 x Other 
Application for Pesticide· Section I 
1. Company/Product Number 2. EPA Product Manager 3. Proposed Class~ication 
100-875 Jim Tompkins 
4. CompanylProduct (Name) PM# o None o Restricted 
TOUQh 3.75EC Herbicide 25 
5. Name and Address of Applicant (lnc/ude ZIP Code) 6. Expedited Review. In accordance with FIFRA Section 3(c)(3) (b)(I). 
Syngenta Crop Protection. Inc. my product is similar or identical il composition and labeling to: 
P. O. Box 18300 
Greensboro. Ne 27419 EPA Reg. No. 
o Check" this Is 8 new address Product Name 
'-. -. 
SeCll II ,"VI .. 
.--~----~ .. --..... ~---,-
----o Amendment· Explain below. o Final printed labels In respons,e.IoNO'h ...... 
'1M-Ageocyl8tter~ • 
o Resubmlssion In response to Ageor:y \eI1er dated o "Me Too" Application. 
W NotIfication· Exptain below. o Other - Explain below. MAR - 22001 
- . 
explanation: Use additional pagels) H necessary. (For Section I and Section II.). 
Thts notification is consistent with the provisions of PR Notice 98-1 0 and EPA regoIationS at 40 CFR 152.46, and no othef CIWlgeS have been-rl'i1de: 10 
- ~ . 
h labeling or the confidential statement of torln."'a of tRs product. 1 understand that it is a violation of 18 U.S ,C. sec. 1001 k) wiDtuIly make any false staternenl: 10 EPA. I 
fUI\Iler undonItand that W Itls notification Is not ooneistenl with ... terms 01 PR Notice 98-10 and 40 CFR 152.48. \I1io producl .... y be in violation 01 FIFRA al'd I may be su!ljocI 
"eoIofcement action and penalties under sections 12 and 14 of AFRA The foKowing changes are being made via this noIiicaIoil: 1) Company name ard adchS8 have been 
updated \0 retIecI Syngenla Crop Pro\eotiol1, Inc. 2) Tho ~ 01 Sale al'd Watrad:l statemonl has been changed 10 .-tha name change. Becausa Syngonta haS been 
_ by \he merger 01 Novartis Crop Protection. Inc. and Zereca NJ P_ we have _ \0 use \he Iormer Zenoca w.ranIy Slat...- .. tha Syngenla warranty 
Slatemonl No other changes occur in \he ota __ \han ... name change. 3) Tho copyright date relleCla Syngeola. 4) Trademar1< ota_ have been updated \0 
reflect Syngenta tor those products to( which Syn0ent8 hc*is the trademal1l.. 5) The Internet address has been changed to rafted Syngenta. 6) Other places in the late which 
refenina to the company name have been uPdated. 
Section - III 
1. Material This Product Will Be PICkaged In: 
Child-Resistant Packaging Unit Packaging Water Soluble Packaging 2-
~rM 8:' 8= B: 
Metal 
Plastic 
Glass 
"CeIIIfIcdon muM If "Yes" No. per If "Yes" No. per Paper 
belubmllfed UnH Packaging wgl Container UnH Packaging wgl oontaIner 0Ihe< (SpecIfy) 
3- location 01 Net Cont_ Inlolmatlon 4. Slze(s) RetaI Container 5. LocatIon 01 Label DIreotIonI 
E3 On Label 
o Label o Container On labeling accompanying product 
6. Manner In Which Labei Is Affixed 10 Product 
§~ o 0Ihe< 
Stenc~ed , ( fo , 
SectIon -IV 
f • C .. 
1. Contact Point lComo/ste Items directly beiow for idenlfficallon oIlndvi<Va1 to be contacted If n to orocass /his ~tmJ 
Name 
I ~bel Group Leader 
I ir~ No. (IncltJd8 Area Code) 
Nan S. Padgett ·7567 
CertIflcaUon ........ 6 .• JWfjl'.pplicallon 
I cer1ify that the Slalsmsnts I have made on this form and all altachments thereto are true, accurate sod compIet6 .••• , Recpived 
I a_edge that any knowingly false or m~ statement may be punishable by fine or ImprtsorrnonI "!: " " • " ! .... t. fGtamped) 
both underiPPticabie law. .. .. 
• 2. SIgnature 3. TItle 
nlMJ J. ~(d~ Label Group Leader 
' t. t. c , , , , ( ~ 
4. v 5. Dat. 
, , 
Typed Name 
~ , , .... (. 
Nan S. Padgett February 26,2001 
EPA Fonn 6570-1 (Rev. 8-94) Previous editions are obsolete. 
EPA-FRM [G . CA-DOC - REGAFFRS] 615197 - bb

Active Ingredient: 
Pyridate* ........... . . ..... 43.5% 
Inert Ingredients: 56.5% 
Total: 100.0% 
*O-(6-chloro-3-phenyl-4-pyridazinyl)-S­
octyl-carbonothioate 
NOTIFICATION 
PULL HERE TO OPEN ~ 
HERBICIDE 
For the postemergence 
control of annual weeds 
in peanuts and corn 
KEEP OUT OF REACH 
OF CHILDREN. 
WARNING/AVISO 
Si usted no entiende la etiqueta, 
busque a alguien para que se la 
explique a usted en detalle. (If 
you do net understand the label, 
find someone to explain it to you 
in detail.) 
See additional precautionary 
statements and directions 
for use ""ide booklet. 
Contains 3.75 Ibs. of pyridate per gallon 
of product. SCP 875A·L1A 0201 
EPA Reg. No. 100-875 
EPA Est. 407-IA-2 
Made in Austria 
2.5 GALLONS 
u.s. Standard Measure 
syngenta 
CONDITIONS or SALE AND LIMITATION or WARRANTY AND LIABILITY 
NonCE: Read the entire Directions for Use and ConditionS of Sale and Umitation of Warranty and 
Liability before buying Of using this product. If the terms are not acceptabte, return the prod1>~ ~ce, 
NO FICATION 
- 2 2001 
I> ••• 
• • •••• 
• • • • •• •• 
unopened, and the purchase price will be refunded. • • • ••• 
L--------------------------------------------------------r~nnr--" ..... . 
The Directions lor Use of this product should be followed carefuly. H is impossible to eliminate all ~ 'nhet'-. • 
entfy associated with the use of this product. Crop injury, inefIectiveness or other unintended cS>£1~ences : ••••• 
may result because of such factors as manner of use or appIiration. weather or crop condttlonst pre&ence 
of other mat ... iaIs Of other influencing factors in the use 01 the product, which are beyond Me' ~dhtrol of • 
SYNGENTA CROP PROTECTION, Inc. or Seller. All such risI<s shall be assumed by BuY'" and User, and •••••• 
Buyer and User agree to hold SYNGENTA and Seller harmless 'for afrt/ daims relating to such factors. • ••• 
• • •••••• • 
SCP 130-87SA-L lA

Tough® 3.75 EC 
SYNGENTA warrants that this product conforms to the chemical description on the label and is reasonably 
fit for the purposes stated in the Directions tor Use, subject to the inherent risks referred to ab,:::Ne, when used 
in accordance with directions under normal use conditions. This warranty does not extend to the use of the 
product contrary to label instructions, Of under abnormal cond~ions or under conditions not reasctlably fore­
seeable to or beyond the control of Seller or SYNGENTA, and Buyer and User assume the risk of any such 
use. SYNGENTA MAKES NO WARRANTIES OF MERCHANTABILITY OR OF FITNESS FOR A PARTICU· 
LAR PURPOSE NOR ANY OTHER EXPRESS OR IMPLIED WARRANTY EXCEPT AS STATED ABOVE. In 
no event shall SYNGENTA or Seller be liable for any incidental, consequential Or special damages resulting 
from the use or handling of this product. THE EXCLUSIVE REMEDY OF THE USER OR BUYER, AND THE 
EXCLUSIVE LIABILITY OF SYNGENTA AND SELLER FOR ANY AND ALL ClAIMS, LOSSES, 
INJURIES OR DAMAGES PNCLUDING CLAIMS BASED ON BREACH OF WARRANTY, CONTRACT, 
NEGLIGENCE, TORT, STRICT UABIUTY OR OTHERWISE) RESULTING FROM THE USE OR HAN· 
DLiNG OF THIS PRODUCT, SHALL BE THE RETURN OF THE PURCHASE PRICE OF THE PRODUCT 
OR, AT THE ELECTION OF SYNGENTA OR SELLER, THE REPLACEMENT OF THE PROOUCT. 
SYNGENTA and Seller offer this product, and Buyer and User accept it, subject to the toregoing conditions 
of sale and limitations of warranty and of liability, which may not be modified except by wrtten agreement 
signed by a duly authorized representative of SYNGENTA. 
DIRECTIONS FOR USE 
It is a violation of Fedeiai law to U~e this plOdu(.. In d III~'IIIIE;I InC()il;:;I~"""~I. #I\illt~ Id.ooling. 
Do not apply this product in a way that will contact workers or other persons, either directly or through drift. 
Only protected handlers may be in the area during application. For any requirements specific to 'fOOr State 
or Tribe, consult the agency responsible 101' 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 agricuHurai workers on farms, 
forests, nurseries, and greenhouses, and handlers of agricultural pestictdes. It contains requirements for 
training, decontamination, notification, and emergency assistance. It also contains specific R;tructions 
and exceptions pertaining to the statements on this label about personal protectNe 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 restrlcted-entry interval (REI) of 
12 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, such as viton or barrier laminate 
• Shoes plus socks 
• Protective eyewear 
FAILURE TO FOLLOW THE DIRECTIONS FOR USE AND PRECAUTIONS ON THIS LABEL MAY 
RESULT IN POOR WEED CONTROL, CROP INJURY, OR ILLEGAL RESIDUES. 
GENERAL INFORMATION 
Tough 3.75 EC is a selective herbicide for postemergence control or suppression ~ adNety grOWing 
annual broadleaf weeds in peanuts, fiek:I corn, seed corn. and popcorn. Tough 3.75 EC is reconvnended to 
be used sequentially and/or tank-mixed with other herbicides as part of a complete weed control program. 
Tough 3.75 EC is an emulsifiable concentrate formulation containing 3.75 Ibs. of pyrKiate per gal. of 
product. 
Biological Activity: Tough 3.75 EC is a contact herbicide that is absorbed rapidly by the leaves of plants. 
Activity in sensitive weeds is evident by marginal yellowing, followed by yellowing and browning of the entire 
leaf. This visible evidence usually occurs within 4-7 days of application. Activity is more rapid at higher tem- •••• 
peratures and under good grOWing conditions. Weed control under adverse conditions suc:t"l as drought, lOW· ••••• 
temperatures, etc. may be deaeased. • • 
Uptake of Tough 3.75 EC is very rapid. Rainfall 1-2 hours after application has little effect 00 the degree or •• '.: 
control. •••••• • 
Mixing Instructions: Fill the spray tank 1/2 full with water. Add the required amount of T~ 3.~5 ic, mix ••• • 
thoroughly and add the remaining amount of water required for application. Maintain ~.a.gitation· ••••• 
during mixing and spraying to ensure a uniform spray mixture. • •• • • • 
. "' .... ••••• • • • ••••• • 
•••• • • •••• 
• • •••••• •

Tough® 3.75 EC 
In tank mixes. after the spray tank is '/2 full of water, first add any wettable powders or dry flowables. Agitate 
until wettable powders or dry flowables are fully dispersed, Add any aqueous flowables. Agitate until 
solution is uniform. Add any emulsifiable liquids and Tough 3.75 EC Agitate until solution is uniform and 
maintain constant agitation until solution is completely applied, Always mix one product in water thoroughly 
before adding another product or compatibility problems may occur. Never mix two products together with­
out first mixing in water. It is recommended that a compatibility test be pertormed prior to tank mixing. 
Note: Agitation must be provided during mixing and spraying to ensure a uniform spray mixture. Spray mix­
ture should be used immediately and not stored. 
Application: Tough 3.75 EC is noncorrosive to spray equipment. Before preparing spray mixture, be sure 
aU equipment is dean to prevent uneven applications, clogging of spray nOlzles, or crop injury. Apply Tough 
3.75 EC with a boom sprayer calibrated to a constant speed and constant, uniform delivery. Tough 3.75 EC 
should be applied in sufficient water (20-30 gals./A is recommended), at a pressure of 30-40 psi to ensure 
proper coverage. Thorough coverage of target weeds is required for optimum results, Use the higher spray 
volumes when treating dense or tall vegetation. Large crop and 'Need canopies can shelter smaller weeds. 
Directed applications below large crop canopies are recommended for optimum coverage of target weeds. 
Adjuvants (noniooic suriactants, crop oil. or liquid fertilizer) may be used with Tough 3.75 EC tank mixes 
where required by tank-mix partners specified in this label. Refer to Directions for Use section for specific 
adjuvant recommendations for use in corn and peanuts. 
On ;"(.! ,'.' thi: j :~".~., . ,';' -.': " . ::"~) thle vG'dstation. 
Application of Tough 3.75 EC with Or in liquid fertilizer solutions as a carrier is not recommended after corn 
emergence. 
For optimum control of broadleaf weeds, apply Tough 3.75 EC to actively growing weeds by the 4-leaf stage. 
A delay in sprayilg which permits weeds to grow beyond the proper application stage may result in 
decreased control. H weeds are under stress and not actively growing, they will be more difficult to control. 
Scout fields often to determine exact timing for application. tf treatments must be made under adverse 
conditions or to larger weeds, use the higher rate allowed in this label. Cultivation may be necessary after 
application if all weeds are not properly controlled or weeds regrow. 
Tough 3.75 EC and tank mixes with herbicides not prohibiting band application may be applied as a band 
treatment. 
Consult your state and local authorities for possible application restrictions and advice when applying Tough 
3.75 EC and tank mixes. 
Tough 3.75 EC rapidly decomposes in the soil and has no residual activity. No crop rotation restrictions exist 
ff normal harvest of treated crop has occurred. Peanuts, field corn, seed corn, or popcorn may be 
replanted immediately if this interval is Shortened, such as in catastrophtc crop failure from hail, flood, etc. 
Multiple applications of Tough 3.75 EC may be made providing that the maximum annual use rate is not 
exceeded. Refer to the Rates and Timings section under corn and peanuts. DO NOT plant to rotational 
crops other than peanuts, field corn, seed corn, or popcorn within 30 days of the last application of Tough 
3.75 EC. 
DO NOT appty this product through any type of irrigation equipment. 
rlELD CORN. SEED CORN*, AND POPCORN* 
Field corn is tolerant to Tough 3.75 EC at all stages of development. Tough 3.75 EC may be applied post­
emergence on field corn, seed corn, and popcorn up to 68 days prior to harvest. Timing of application must 
be based on the stage of weed growth for optimum weed control and minimal competition to the crop. 
'*00 not apply Tough 3.75 EC to seed corn or popcorn without first verifying with your local seed corn 
compaIly (supplier) the selectivity of Tough 3.75 EC 00 your inbred line or variety of seed corn or popcorn. 
This precaution wil help avoid potential injury of sensitive varieties. 
00 not graze or otherwise feed treated corn grain, forage, or fodder to livestock within 68 days of applica­
tion of Tough 3,75 EG. 
General Weed Ust 
This is a general list of weed species which may be treated with Tough 3.75 EC in corn as recommended 
under the Rates and Timings section in this label. Tough 3.75 EG, when applied as directed in this label. 
will control or suppress many annual broadleaf weeds, including but not limited to: l .. , .... 
Annuals 
Amaranth, Palmer 
(Carelessweed) 
Amaranth, spiny 
(Spiny pigweed) 
Bedstraw, 
catchweed 
Burcucumber 
Carpetweed 
Chickweed, common 
Cocklebur, common 
Corn, chamomile 
Corn, spurry 
Oeadnettle, purp'e 
Oeadnettle, spotted 
Galinsoga, hairy 
Galinsoga, small flower 
Henbit 
Jimsonweed 
Kochia 
Kochia. 
triazine resistant 
Kochia. 
ALS resistant* 
Lambsquarters, 
common 
Lambsquarters, c., 
triazine resistant 
Mayweed chamomile 
Nightshade. 
American tjack 
Nightshade. black 
Nightshade. 
eastern tjack 
Nightshade. purple 
Nightshade. 
silverleaf 
Pigweed. fringed 
Pigweed, prostrate 
Pigweed, redroot 
Pigweed. smooth 
Pigweed, tumble 
t (. ( C' 
• • • Pigweed, (. <I <I II 
triazine resistant 
PigwIM,: co: • 
AU~ resistcfht* (. • tl ., •• 
Pursle.s,a.,mon <I <I II" 
Shephe~$aJ'rse • " 
Sunfl~tr •• ommon : ••••• 
Sunflower, vo(unteer 
• Thist~~ AMsian 
Waterhemp, tall 
Waterhemp, 
common 
Yellow rocket 
t "C II 
• 
( ( ( (

Tough® 3.75 EC 
*ALS (acetolactate synthase) resistant weeds include those weeds resistant to the sulfonylurea (e,g . 
Classic® and Glean~) and/or im!dazolinone (e 9 , Scepter® and Pursuit®) family of herbicides 
For best peliormance apply Tough 3.75 EC when weeds are small (by the 4·leaf slage) and actively 
growing. 
Sedges 
Nutsedge, yellow Nutsedge, purple 
Special Use Directions for Yellow and Purple Nutsedge Suppression: Apply 2 pIs. of Tough 3.75 EC 
with 2 pts. of atrazine (4L or the equivalent of 90 DF) per treated acre when sedges are 6-8 inches high for 
significant yellow and purple nutsedge suppression. The addition of a crop oil concentrate is recommended 
for improved activity. Tough 3.75 EC will burn back the top growth of the sedges. Regrowth may ocan. 
Sedges must be actively growing without stress for optimum results. 
Rates and Timings 
Tough 3.75 EC may be applied postemergence up to 68 days before harvest. 
Tough 3.75 EC at '-2 pts. per treated acre may be applied to actively growing broadleaf weeds at any stage 
of com growth after emergence in all tillage systems (conventional, no tillage, or reduced tillage). SpHt 
applications of Tough 3.75 EC may be made, but do not exceed a total of 2 pts. per treated acre per year. 
Cr.,,'" .'f th-, II. ......... 'I .... .,.~I .... '", ~,~~.:"'.., -.f .h;.·. 1,"'''''1'''1 ~.'V hr:-'" :-:r'i('''Itjo~ tir:Jing for achieving optimll!1l wee::l (.c-rt:o! 
Tank Mix Treatments In Corn 
Tough 3.75 EC may be tank-mixed with one or more of, but not limited to, the following herbicides for con­
trol of additional broadleaf weeds and/or grasses. Read and follow the label of each tank-mix product used 
for precautionary statements, directions for use, rates and timings, and other restrictions, 
Adjuvants (nonionic suriactants, crop oil, or liqutd fertilizer) may be used with Tough 3.75 EC tank mixes 
where required by tank-mix partners specified il this label. Read and carefully follow all restrictions and 
recommendations of tank-mix partners. Use of tank·mix partners is only allowed where permitted in each 
state. 
Tank-mixing Tough 3.75 EC with other corn herbtcides offers many benefits, including greater weed control 
spectrum, adding products with different modes of action to reduce or delay the development of herbicide' 
resistance by weeds, and optimizing pertormance of tank-mix partners, thus allowing a lower use rate of 
each as directed in the label. Optimization of performance is particularly beneficial when tank-mixing a resk1-
ual herbicide such as atrazine, thus decreasing carryover and other concerns associated with residual her­
bicides. Suggested tank mixes include but are not limited to: 
Tough 3.75 EC + Atrazlne: For additional broadleaf weed control (see weed list below), apP'Y '·2 pts. of 
Tough 3.75 EC with '-2 pts. of Atrazine (4L or the equivalent of 900F) per treated acre. The addition of a 
crop oil concentrate is recommended for optimum control. 
Use the lower rates of Tough 3.75 EC and atrazine when weeds have less than 4 leaves. For broadleaf 
weeds above 4-1ea1 stage. heavy infestation, or use under adverse conditions such as drought stress, use 
the higher rates of Tough 3.75 EC and atrazine. 
To control moderate infestations of escaped grasses following application of a preplant incorporated or pre­
emergence grass herbicide, apply 1-2 pts. of Tough 3.75 EC plus 2-3 pts. of atrazine (4L or the equivalent 
of 900F) per treated acre. Applications should be made before escaped grasses reach the 3-Iea1 stage (1.5 
inches tall). The addition of a crop oil concentrate is recommended for optimum contr'" of escaped 
grasses. 
Follow alilabe\ restrictions as well as state arM1 k>caI restridions on atrazine use, 
Additional broadlea1 weeds controlktd with Tough 3,75 EC/Atrazine tank mix 
Anoda, spurred 
Buckwheat, Wild 
Knotweed. prostrate 
Lady's Thumb 
Morningglory, 
entire leaf 
Morninggk>ry. 
ivyleaf 
Morningglory, 
pitted 
Morningglory. red 
Morningglory, tall 
Mustard, white 
Mustard, wild 
Ragweed, common 
Sicklepod 
Sida. prickly 
(teaweed) 
Smartweed. 
green 
Smartweed. 
Pennsylvania 
Velvelieaf 
Tough 3.75 EC + BiadeX® (cyanazine): For additional broadleaf weed control (see weed list under Tough 
3.75 EC plus atrazine tank mix), apply 1 pI. of Tough 3.75 EC with 1-1.75Ibs. of BladeX® 900F per treateq C (t: •• 
acre. Tough 3.75 EC at a rate of 1-2 pis. with 1-1.751bs. Bladex gOOF per treated acre will control suscep- t: c •• 
lible grasses, such as barnyardgrass, crabgrass, most foxtail speCies, fall panicum, Texas pantcum, witch- (! • 
grass, etc. up to the 3-Ieaf stage (1 .5 inrnes tal). * •••• : 
Precautions: Do not tank-mix with BJadex, as crop injury may result. Do not apply if the fifltlJ~;dd corn is • 
visible. Do not apply during cool, wet conditions or when corn Is under stress. Do not use on )anlfy ..,lls with •••• 
less than 1 % organiC matter, Do not use crop oil concentrates with this tank-mix combinatio(''t Cfse ctt1' injurt ••••• 
may result. t: • 
, . .. 
Read Bladex label for further cautions and rerommendations on proper use to prevent croij [t!ua : ••••• 
• Tough 3.75 EC + Guardsman® (dlmethenamld + atrazlne) ., ••• • 
Apply 1-2 pts. of Tough 3.75 EC with the recommended labeled rate of Guardsman per treated acre earil ••••• 
postemergence (up to 8-inch corn). Apply this mixture before grasses are greater than 1.5 inches tall. Crop ( ••• 
011 concentrate may be added to this mixture to optimize grass control. Co • 
"""Cr •• ,

Tough® 3.75 EC 
Tough 3.75 EC + Accent® (nlcosulfuron) 
Apply 1-2 piS. of Tough 3 75 EC with the recommended labeled rate of Accen! .?€f treated acre for broad 
spectrum weed control. The addition of a crop oil concentrate or a nonionic 5ur1:ao...-tanl is recommended for 
optimum weed control. Alrazine 4L at 1 -2 piS. per treated acre may be added to eri'.ance control of velvetieaf 
and ragweed. 
Tough 3.75 EC + Beacon® (prlmlsulfuron) 
Apply 1-2 pis. of Tough 3.75 EC with the recommended labeled rate 01 Beacon per treated acre for broad 
spectrum weed control. The addition of a crop oil concentrate or a non ionic 5ur1actant is recommended for 
optimum weed control. 
Tough 3.75 EC + Accent and Beacon 
Apply '-2 pis. of Tough 3.75 EC with 0.33 oz. of Accent and 0.38 oz. of Beacon per treated acre for broad 
spectrum weed control. The addition of a crop oil concentrate is recommended lor optimum weed control. 
Tough 3.75 EC + Exceed® (prosulfuron + prlmlsulfuron) 
Apply 1-2 pts. of Tough 3.75 EC with the recommended labeled rate of Exceed per treated acre for broad 
spectrum weed controt. The addition of a crop oil concentrate or a nonionic surtactant is recommended for 
optimum weed control. 
- ., .... ' - 7- -.... · ..... ":::;':~r,"':I~' '·' .• :;ulflH'on) 
Apply 1-2 pts. of Tough 3.75 EC with the recommended labeled rate of Perml pet" treated acre for broad 
spectrum weed control.. A non ionic surtactant is recommended for optimum weed control. 
Tough 3.75 EC + Frontler® (dlmethenamld) and Accent 
Apply 1·2 pts. of Tough 3.75 EG wtth the recommended labeled rate of Frontier and 0.33 to 0.66 oz. of 
Accent per treated acre for broad spectrum weed control. This tank mix may be applied earty post­
emergence (up to 8-inch tall corn) when weeds are emerged and actively growng. A reduced rate of Accent 
(0.33 oz./A) may be used in the mixture for control of foxtail species, barnyardgrass. fall panicum, or seedling 
johnsongrass when all aTe less than 3 inches tall. The addition of a crop 01 concentrate is recommended for 
optimum weed control. Atrazine 4L at 1-2 pts. per treated acre may be added to enhance control of velvetleaf 
and ragweed. 
Tough 3.75 EC + Banvet® (dlcamba) 
Apply 1-1.5 pts. of Tough 3.75 EC with 0.5-1.0 pt. of Banvel per treated acre b additional broadleaf weed 
control. 
Tough 3.75 EC + Clarlty® (dlglycolamlne salt of 3,6-dlchloro-o-anisic acid) 
Apply 1-1.5 pts. of Tough 3.75 EC with 8-16 fl. oz. of Clarity per treated acre fcI" additional breadleaf weed 
control. 
Tough 3.75 EC + Marksman® (dlcamba + atrazlne) 
Apply 1-1.5 pts. of Tough 3.75 EC with 2-3.5 pts. of Marksman per treated acre b additional broadleaf weed 
control. 
Tough 3.75 EC + Sencor® (metrlbuzln) 
Apply 1-2 pts. of Tough 3.75 EC with 1-2 ozs. of Sencor OF (or the equivalent of 4L) per treated acre for 
additional broadleaf weed control. 
Tough 3.75 EC + Resource® (flumlClorac pentyl ester) 
Apply 1-2 pts. of Tough 3.75 EC with 4-8 ft. ozs. of Resource per treated acre tor additional broadleaf weed 
control. The addition of a crop oil concentrate is recommended for optimum weed control. 
Tough 3.75 EC + 2,4-0 (amine or ester formulations) 
Add the recommended label rate of 2,4·D to Tough 3.75 EG. or tank mixtures wtth Tough 3.75 EG. 10 
enhance breadleaf activity. 
Precaution: Some products available for tank-mixing with Tough 3.75 EC may cause injury to corn when 
applied. Consult labels of all products used tor restrictions, injury descriptions, and recovery intervals. 
PEANUTS ..... 
Peanut plants are very tolerant to Tough 3.75 EC at all stages of development TlfTling of application must···· 
• 
be based on the stage of weed growth for optimum weed control and minimal ccrnpetition to the crop. ...: 
Adjuvants (non ionic surfactants, crop oil, or liquid fertilizer) may be used with Tough 3.75 EC tank mixes·· •• 
where required by tank-mix partners specified in this label. Read and carefuly fcMlow all ~tns and • 
recommendations of tank-mix partners. Use of tank-mix partners is only allowed where p~mitt"'ed,..n each •••• 
state. • • • •• • • ••••• 
• • Do not graze or otherwise feed treated peanut hay and vines to livestock. • • : ••• : • 
General Weed Us1 •• : • • • • 
This is a general Is of weed species which may be treated with Tough 3.75 EC in pea~~~ -a\ recom- • 
mended under the Rates and Timings section in this label. Tough 3.75 EC. when applied as directed in this.···· • 
label, will control or suppress many annual broadleaf weeds, including but not limited to: •••• 
• • •••••• • 
?

Tough"3.75 EC 
Annuals 
Amaranth, Palmer Cocklebur, Nightshade, Pigweed, fringed 
(Carelessweed) common American black Pigweed, prostrate 
Amaranth. spiny Eciipta Nightshade, black Pigweed, reel root 
(Spiny pigweed) Hemp sesbania Nightshade, Pigweed, smooth 
Beggarweed, Florida Jimsonweed eastern black Pigweed, tumble 
Carpetweed Lambsquarters, Nightshade, purple Purslane, common 
Chickvteed, common common Nightshade,silverleaf Senna, coffee 
For best performance, apply Tough 3.75 EC when weeds are small (by the 4-leaf stage) and actively 
growing. 
Sedges 
Nutsedge, yellow Nutsedge, purple 
Special Use Directions for Yellow and Purple Nutsedge Suppression: Apply 2-3 pts. of Tough 3.75 EC 
when sedges are 6-8 inches high for significant yellOlN and purple nutsedge suppression. The addition of a 
crop oi concentrate is recommended for improved activity. Tough 3.75 EC will burn back the top growth of 
the sedges. Regrowth may occur. Sedges must be actively growing without stress tor optimum results. 
R~te~ PI"tt T1minqs 
Tough 3.75 EC may be applied to emerged weeds in peanuts from cracking to 68 days before harvest. 
Tough 3.75 EC is recommended to be used as part of a sequential and seasonal peanut herbicide program. 
Dependilg upon the weed spectrum and emergence, It should be applied at cracking or postemergence, 
following a standard recommended preplan\, preptant incorporated, preemergence, or other at-cracking 
program of such herbicides as: Balan(!D EC, Vernam~ 7E. Dual~ BE, Sonalan"", and Prowl~ 3.3EC. See all 
labels of products used for specific rates and timings. 
Apply Tough 3.75 EC at 2-3 pts. per treated acre to emerged actively growing target weeds in the 2 to 4-leaf 
stage and up to 3 inches in height. Split applications of Tough 3.75 EC may be made, but do not exceed a 
total of 4 pts. per treated acre per year. Consult Application section of this label for best application timing 
'for achieving optimum weed control. 
Tank Mix Treatments In Peanuts 
Tough 3.75 EC may be tank-mixed with one or more of, but not limited to, the following herbicides for con­
trol of additional broadleaf weeds and/or grasses. Tank-mixing allows greater flexibility and a broader spec­
trum of weed control. Read and follow the label of each tank-mix product used for precautionary statements, 
directions for use, rates and timings, and other restrtct:ions. Suggested tank mixes include, but are not 
limited to: 
Tough 3.75 EC + 2.4~08 amine: For broad spectrum broadleaf weed control, apply 2-3 pts. of Tough 3.75 
EC with 0.2-0.25 lb. acid equivalent or 2,4-08 per treated acre. A nonionic surfactant or crop oil concentrate 
may be added to improve weed control. The addition of spray additives will increase the hormonal 2,4-08 
response in peanuts. In areas where lambsquarters and pigweed are the primary weed problems, apply 1.5 
pts. of Tough 3.75 EC tank·mixed wtth 0.2·0.25 lb. acid equivalent of 2.4·DB per treated acre. 
Additional broadleaf weeds controlled with Tough 3_75 EC + 2,4-08 
Anoda, spurred 
Morningglory, 
entire leaf 
Morninggtory. ivylea! 
MOfn.-.ggk>ry, red 
Morningglory, 
palmleaf 
Morningglory. pitted 
Morningglory. 
small flower 
Tough 3.75 EC + Dual BE (metolachlor) 
Momingglory, tall 
Mallow, venice 
Ragweed. 
common 
Ragweed. giant 
Sida, prickly 
(Teaweed) 
Sicklepod 
Velvetleaf 
Watermelon, wild 
For grass control, apply 2 pts. of Tough 3.75 EC with the recommended label rate of Dual BE per treated 
acre at cracking and before grass emergence. 
Tough 3.75 EC + Basagran~ (bentazon) 
For additional broadleaf weed controt and nutsedge actMty, apply 2-3 pts. of Tough 3.75 EC with 1-2 pts. of 
Basagran per treated acre. The addition of a crop oil concentrate is recommended for optimum weed 
control. 
7 
( , c: • 
Tough 3.75 EC + Blazer® (acifluorfen) , < < ••• 
Apply 1-2 pts. of Tough 3.75 EC with 1-1.5 pts. of Blazer per treated acre for additional broadleaf controt. ( • 
The addition of a nonionic surfactant or a crop oil concentrate is recommended for optimum weed control.{ { ( •• : 
Tough 3.75 EC + Storm® (aclfluorfen + bentazon) .... c- , , 
• •• Apply 1-2 pts. of Tough 3.75 EC with 1-1.5 pts. of Storm per treated acre for additional broalilleaf weed con- c • c: • 
trol. The addition of a non ionic surfactant or crop oil concentrate is recommended for ~i'1U11 weed ( " ••• 
control. C c • • ( • 
( , .... 
Tough 3.75 EC + Pursult~ (Imazelhapyr) •• :.. • • 
Apply '·2 pts. of Tough 3.75 EC with 2·4 fl. oz. o! Pursun per treated acre tor addttional ~~e",a! weed • 
contra. The addition of a non ionic surfactant or crop oil concentrate is recommended for optimum weed con- r ( [ C 
trot. "'l(({ 
Tough 3.75 EC + Starfire® (paraquat dichloride) ~ < , , < , 
Apply '·2 pis. of Tough 3.75 EC wtth " fl. oz. of Starflre per treated acre for adddional broadlea! weec:f 
control. The addition of a non ionic surfactant is recommended for optimum weed control.

Tough® 3.75 EC 
Precaution: Some products availaNe for tank-mixing with Tough 3. 75 EC may cause injury to peanuts when 
applied, Consult labels of all products used for restrictions, injury descriptions. and recovery intervals. 
STORAGE AND DISPOSAL 
Do not contaminate water, food, Of feed by storage or disposal. 
Agricuttural Chemical: Do not ship or store with foods, feeds, drugs, or clothing. 
Storage 
Store unused product in original container only in cool, dry area out of reach of children and animals. Keep 
storage locked. 
Pesticide Disposal 
Wastes resulting from the use of this product may be disposed of on-site or at an approved disposal 
facility. 
Container Disposal 
Triple rinse (or equivalent) adding rinsate to spray tank, then offer for recycling or reconditioning. or punc· 
lure and dispose of in a sanitary landfill, by incineration, Of, if allowed by state and k>cal authorities, by burn-
ing. If burned, stay out 01 smokr.. 'l1:" -
PRECAUTIONARY STATEMENTS 
Hazards to HUmans and Domestic Animals 
WARNING/AVISO 
Harmful if swallowed. Harmful if absorbed through the skin. Avoid contact with skin. Harmful if inhaled. Avoid 
breathing spray mist. Causes substantial but temporary eye injury. Do not get in eyes or on clothing. 
Prolonged Of frequently repeated skin contact may cause allergic reactions in some indNktuals. 
Statement of Practical Treatment 
If In eyes: Hold eyelids open and Hush with a steady, gentle stream of water for 15 minutes. Get medical 
attention. 
If swallowed: Drink promptty a large quantity of milk, egg white, gelatin solution, or, if these are not avail­
able, drink large quantities of water. Avoid alcohol. 
If on skin: Wash with plenty of soap and water. Get medical attention. 
Note to Physician: Treat symptomatically. There is no specific antidote. If this product is ingested, induce 
emesis or lavage stomach. The use of an aqueous slurry of activated charcoal may be considered. May 
cause chemical pneumonitis if aspirated. If lavage is performed, suggest endotracheal and/or esophago­
scopic control. 
Personal Protective Equipment 
Some materials that are chemical-resistant to this product are listed below. If you want more options, follow 
the instructions for category G on an EPA chemical resistance category selection d1art. 
Applicators and other handlers must wear: 
• Long-sleeved shirt and long pants 
• ChemK:a1-resistant gloves, such as viton Or barrier laminate 
• Shoes plus socks 
• Protective eyewear 
Folk>w manufacturer's instructions for cleaning/maintaining PPE. If no such instrudklns for washables, 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 tobacco, or using the toilet. 
• Remove clothing immediately if pesticide gets inside. Then wash thoroughly and put on clean 
dothing. 
• Remove PPE immediately after handling this product. Wash the outside of gtoves before removing. 
As soon as possible, wash thoroughly and change into dean dothing. 
• • 
c· c •• 
• I' ••• 
• • • c ••• 
• 
•••• 
Environmental Hazards • • •••••• • ••• Do not contaminate water iltended for irrigation or domestic purposes. Runoff may adversefy~ct non. • 
target plants. Do not apply di"ecdy to water, to areas where surface water is present, or to, ivte.tldal areal' •••• 
below the mean high water mark. Do not contaminate water by cleaning of equipment or diSp()saJ .f equip-
ment wash waters. This pesticide is toxic to estuarine organisms. ~ ~ C> • • • 
Physical and Chemical Hazards 
Keep away from heat or open flame. 
•••• • • 1:-,'" 
, . ________________________________________________________________________ --7~cC> •••

Tough®3.75 EC 
Beacon~, OuaJ~, Exceed®, and Tough!!> trademarks of Syngenta 
Accent ,~, Bladex~. Classic®, and Glean® trademarks of E, I, DuPont de Nemours and Company 
Balan':!! and Sonalan ' .. trademarks of DowElanco 
Banvel®, Basagran®, Blazer@, Clarity®, Frontier®, Guardsman®, Marksman®, and Storm® trademarks of 
BASF COfporation 
Prowl®, Pursuit®, and Scepter® trademarks of American Cyanamid Company 
Permit® trademark of (and used under license from) Nissan ChemicaJ Industries, Ltd. 
Resour~ trademark of Valent U.S.A. Corporation 
Sencor® trademark of Bayer AG 
Starfire® trademark of Zeneca Ag Products 
Vernam~ trademark of Drexel Chemical Corporation 
©200t Syngenta 
Syngenta Crop Protection, Inc. 
Greensboro. North Carolina 27409 
www.syngenta-us.com 
SCP 875A-L1A 020-; -~~ 
TOUGH® l 75 EC KEEP OUT OF REACH OF CHILDREN, 
• WARNING/AVISO HERBICIDE Precautionary Statements 
For the postemergence 
control of annual weeds 
in peanuts and corn 
Active Ingredient: 
Pyrtdate* . 
Inert Ingredients: 
Total: 
.43.5% 
56.5% 
100.0% 
*O-(6-chlo ro·3-phenyl-4-pyridazinyl)-S­
octyI-carbonothioate 
Contains 3.75 lbs. of pyridate per gallon 
of product. 
See directions lor use in at1ached booklet. 
AGRICULTURAL USE REQUIREMENTS 
Use this product only in aCCOr­
dance with its labeling and with the 
Worker Protection Standard, 40 
CFR part t 70. Refer to supplemen· 
tal labefing under· AgricuUural Use 
Requirements- in the Directions for 
Use section for information about 
this standard. 
EPA Reg. No. 100·875 
EPA Est. 407·IA·2 
Made in Austria 
Hazards to Humans and Domestic Animals 
Harmful if swallowed. Harmful jf absorbed through the skin. 
Avoid contact with skin. Harmful if inhaled. Avoid breathing 
spray mist. causes substantial but temporary eye injury. Do 
not get in eyes, or on clothing. Prolonged or frequently 
repeated skin contact may cause allergic reactions in some 
individuals. 
Statement of Practical Treatment 
If in eyes: Hold eyelids open and flush with a steady, gen­
tle stream of water 10r 15 minutes. Get medical attention. 
If swallowed: Drink promptly a large quantity of milk, egg 
white, gelatin solution, or, if these are not available, drink 
large quantities of water. Avoid alcohol. 
If on skin: Wash with plenty of soap and water. Get medical 
attention. 
Note to Physician: Treat symptomatically. There is no spe­
erne antidote. If this product is ingested, induce emesis or 
lavage stomach. The use of an aqueous slurry of activated 
charcoal may be considered. May cause chemical pneu­
monitis if aspirated. tf lavage is perlormed, suggest endotra­
cheal and/or esophaglscopic control. 
Environmental Hazards 
Do not contaminate water intended for irrigation or domestic 
purposes. Runoff may adversely affect 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 by cleaning of equipment or 
disposal of equipment wash waters. This pesticide is toxic to 
'/ 
Tough® trademark of Syngenta 
©2001 Syngenta 
estuarine organisms. .. ••• 
Syngenta Crop Protection, Inc. 
Greensboro. North Carolina 27409 
www.syngenta-us.com 
SCP 875A·L 1 A 0201 
2.5 GALLONS u. S. Standard Measure 
Physical and Chemical Hazards •••••• 
Keep away from heat or open flame. • • 
Chemlgation Prohibition ••••• : 
Do not apply this product through any;p. 'if. irrigation • 
equipment. : .: •••• 
Container Disposal • ••••• • ••••• 
Do not reuse empty container. Triple rinse (&r. c4Uivalent), • 
puncture and dispose of in a sanitary landfill, or by incina ......... 
ation, or by open burning, if allowed bf '$t'" ~nd lodIl 
authortties. tf burned, keep out of smoke. ...... • 
•••• 
syngenta 
• • •••• 
• • ....... • 
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