crop-chem-docs/corpus/epa_ppls/100-677.md

# DUET HERBICIDE

- EPA Reg No: **100-677**
- Registrant: SYNGENTA CROP PROTECTION, LLC
- Signal word: Warning
- Active ingredients: Linuron (17.7%); Metolachlor (44.3%)
- Label accepted: 1987-07-27
- Source PDF: https://www3.epa.gov/pesticides/chem_search/ppls/000100-00677-19870727.pdf

---
.. . . 
( 
LABELMASTER BOOKLE~ - FRONT PANEL 
-!' 'f)\ "'\ ".' , 
c~~ ~ r \. 
C 1 \~'O~ .. , 
'\\' f2. ~ \"' .... ..I' ~. \'v 1d'0 ~ "!>v· \).c.~ ~ <Ii ..... ~':".... 9·!> 
~ ~~~. , 
.,~ .\.~~. \o\. 1""If"\' 
Herbicide 
For weed control in 
\l"~., ." ~.~'-A"l""'" 1';;-i"'-s-·'iIo.a ,., 
Active Ingredients: . o;J" .. ~ .~. 
Metolachlor: 2-chloro-N-(2-ethy ~~ 
6-methylphenyl)-N-(2-methoxy-1-
methylethyl) acetamide ................. ~ t a ••••••••••••• 
Linuron: [3-(3,4-dichlorophenyl)-1-methoxy-
l-meth lurea] .. 0 ••• " ................................. .,. 
Inert Ingre 1en s: 
Total: 
Duet contains 5.6 lbs. ective ingredient per gallt.m. 
Keep Out of Reach of Children 
WARNING/AVISO 
• 
44.3\ 
17.7\ 
. \ 
100.0\ 
PRECAUCION AL USARIO: Si usted no lee ingl~s, no use este 
producto hasta que la etiqueta haya sido explicado ampliamente. 
See additional precautionary statements inside booklet. 
See directions for use inside booklet. 
EPA Reg. No. 100-
EPA Est. 100-
Duet N trademark of etBA-GEIGY Corporation 
2 1/2 Gallons 
U.S. Standard Measure 
Agricultural Division 
CIBA-GEIGY Corporation 
Greenaboro, North Carolina 
CGA 
27419 
••• I 
, .. 
'" . , . , .. 
, , 
" 
) 
I I • I I • 
, .. , . 
.. 
I • I •• 
, 
• • I •• 
• ••••• • • .. 
• I • I •• 
• • •• ••

( ( 
-2-
DIRECTIONS FOR USE AND CONDITIONS OF SALE AND WARRANTY 
IMPORTANT: Read the entire Directions for Use and the 
Cond1t10ns of Sale and Warranty before using this product. 
Conditions of Sale and Warranty 
The Directions for Use of this product reflect the opinion of 
experts based on fIeld use and tests. The directions are 
believed to be reliable and should be followed carefully. 
However, it is impossible to eliminate all risks inherently 
associated with use of this product. Crop injury, ineffep7 
tiveness, or other unintended consequences may result beca~se 
of such factors as weather conditions, presence of other matE­
rials, or the manner of use or application all of which are 
beyond the controt of CIBA-GEIGY or the Seller. All such risks 
shall be aS3umed by the Buyer. 
CIBA-GEIGY warrants that this product conforms to the chemical 
description on the label and is reasonably fit for the purposes 
referred to in the Directions for Use subject to the inherent 
risks referred to above. CIBA-GEIGY makes no other express or 
implied warrant~ of Fitness or Merchantability or any other 
express or impl1ed warranty. In no case shall CIBA-GEIGY or the 
Seller be liable for consefiuential, special, or indirect damages 
result1ng from the use or andling of this product. CIBA-GEIGY 
and the Seller offer this product, and the Buyer and user accept 
it, subject to the foregoing Conditions of Sale and Warranty, 
which may be varied only by agreement in writing signed by a 
duly authorized representative of CIBA-GEIGY. 
.. ,. .. . 
. . . 
.J 
'" I. C 
. .. • • 
'" ", . . 
' .. , . 
. ..... . .

( ( 
-3-
DIRECTIONS FOR USE 
It is a violation of federal law to use this product in a manner 
inconsistent with its labeling. 
FAILURE TO FOLLOW THE DIRECTIONS FOR USE AND PRECAUTIONS ON THIS 
LABEL MAY RESULT IN POOR WEED CONTROL, CROP INJURY, OR ILLEGAL 
RESIDUES. 
Do not apply this product in such a m~nner as to directly or 
through drift expose workers or other persons, except those 
knowingly involved in the application. The area being treated 
must be vacated by unprotected persons. 
Reentry Statement 
Do not en~er treated areas without protective clothing until 
sprays have dried. 
Because certain states may require more restrictive reentry 
intervals for various crops treated with this product, consult 
your State Department of Agriculture for further information. 
Written or oral warnings must be given to workers who are 
expected to be in a treated area or in an area about to be 
treated with this product. Oral warnings must inform workers of 
areas or fields that may not be entered without specific protec­
tive clothing until sprays have dried, and appropriate actions 
to take in case of accidental exposure as described under Pre­
cautionary Statements on this label. When oral warnings are­
given, warnings shall be given in a language customarily under­
stood by workers. Oral warnings must be given if there is 
reason to believe that written warnings cannot be understood by 
workers. Written warnings must include the following informa­
tion: "WARNING. Area treated with Duet on (date of applica­
tion). Do not enter without appropriate protective clothing 
until sprays have dried. In case of accidental exposure, flush 
eyes or skin with plenty of water. Call a physician if irrita­
tion persists. Remove and wash contaminated clothing before 
I 
reuse." . ',t 
• I , • ~ t 
, , . , 
" To avoid spray drift, do not apply under windy conditions. ' 
Avoid spray overlap, as crop injury may result. 
.... , . " . 
" . 
• • 
.. . .... , ... " 
I ••• I • 
• • .. 
• I I • I I •• 
•• • I • 
• , . , . 
• , • I

( ( 
-4-
General Information 
Duet is a selective herbicide which is mixed with water and 
applied as a preemergence treatment to control most annual 
grasses and certain broadleaf weeds in soybeans. 
Dry weather following a preemergence application· may reduce 
effectiveness. If weeds develop, a shallow cultivation (rotary 
hoe preferred) should be made after soybear. emergence while 
weeds are small enough for mechanical control. 
Where reference is made to weeds partially controlled, partial 
control can either mean erratic control from good to poor, or 
consi~tent control at a level below that generally considered 
acceptabl~ for commercial weed control. 
Prepare a good seed bed. Soybeans cannot be properly planted in 
cloddy or compacted soil and crop injury may result following j 
the preemergence application. Do not cultivate before soybean 
emergence, except as noted above, as weed control may be reduced 
and crop ir.jury may result. 
Precaution: Crop injury may occur following the use of Duet 
if heavy rainfall occurs soon after application. 
Thoroughly clean sprayer prior to use. Do not use a sprayer 
contaminated with any other materials, or crop damage or sprayer 
clogging may result. 
Mixing Instructions 
Mix Duet with water and apply as a spray. Fill the spray tank 
one-half to three-fourths full with water, add the proper amount ~,,:> 
of Duet, then add the rest 'If the water. Provide sufficient ~ .. <".>< 
agitation during mixing and application to maintain a uniform ~r, ""'\'~ 
emulsion. (~'?'Jp.\ ,,; '\ 
. / . ;Y.,' \I, \, !mportant: When mixLng 10adLng and spraying wear a wide-brimmed ,'~ 
hat, mid-forearm to elbow length chemical resistant gloves, and 
one-piece overalls which have long sleeves and long pants •.. ,. :'.:.: 
Overalls should be constructed of finely woven fabric as sJ!lc'ci- : .... : 
fied in the USDA/EPA Guide for Commercial Applicators. . .. . 
Any article of clothing worn while applying product must be 
cleaned before reusing. Clothing which has been drenched .or: 'r,.as 
otherwise absorbed concentrated pesticide must be disposed' o.f . in 
a sanitary landfill, or incinerated, or if allowed by stat~.~nd 
local authorities, by bu.ning. 
••• , I 
· ' .... 
• t •••• 
· . 
I •• • • • 
· . . \ .,

( ( 
-5-
Instead of clothing and equipment specified above, the applica­
tor can use an enclosed tractor cab which provides a filtered 
air supply (as described by Taschenberg and Bourke, 1975). 
Application Procedure~ 
Ground APplication: Apply in a minimum of 10 gals. of spray 
mixture per acre. Use sprayers that provide accurate and uni­
form application. Avoid overlapping, and shut off spray booms 
when starting, turning, slowing or stopping, or soybean injury 
may result. Rinse sprayer thoroughly with clean water immedi­
ately after use. 
Calculate the amount of herbicide needed for band treatment by 
the formula: 
band ,fidth in inches X 
row wl.dth in inches 
Do not apply aerially. 
broadcast rate 
per acre 
= amount needed per 
acre of field 
Chemigation: Do not apply this product through any type of 
irrigation system. 
Soybeans 
Apply Duet during planting (behind the planter) or after plant­
ing, but before weeds or soybeans emerge, using the appropriate 
rate from Table 1. To avoid crop injury, plant seed at least 
1 3/4 inches deep on flat or raised seedbeds only. 
• IIIII 
• ., t • I. 
• I I • 
.. . 
· . • 
· . .. 
• • I I I I 
• • .. 
• ,. II 
· 
.,., I 
• •••• I 
· , .. .... , . · . .. . ,

lieeds Controlled 
barnyardgrass 
crabgrass 
crowfootgrass 
fall panicum 
foxtail millet 
giant foxtail 
goosegrass 
green foxtail 
prairie cupgrass 
red rice 
( 
signalgrass (Brachiaria) 
southwestern cupgrass 
witchgrass 
yellow foxtail 
yellow nutsedge 
black nightshade 
carpet weed 
Florida pus ley 
galinsoga 
pigweed 
lambsquarters 
prickly sida 
common ragweed 
smartweed 
Venice mallow 
wild mustard 
Table 1: Duet - Soybeans 
Soil Texture 
Sandy Loam 
Loam, Silt Loam, Silt 
( 
-6-
Weeds Partially Controlled 
volunteer sorghum 
Texas panicum 
shattercane 
seedling johns0ngrass 
sandbur 
hairy nightshade 
Florida beggarweed 
common purslane 
cocklebur 
jimsonweed 
morningglory 
velvetleaf 
Broadcast Rat Per Acre 
0.5% to Less than 3% I j to b% Organ1c 
Orqanic Matter Matter 
2.5 pts. 3.0 pts. / 
"--3.0 pts. 4.0 pts. 
.. ...... . 
• t. I .... .. 
Precautions: To avoid crop,injury, (1) Do not apply to floldl, : .... : 
with standing water or to f1elds too wet to cultivate, (2) fio •••• 
not use on sands or loam sand or an soil containing less than •...• 
0.5% or an1C matter, 3 Do not use on ravell soils or eX~Ased •• : •• ' 
subsoils, and 4 Do not s ra over the to of emer e so' 6 ns. . 
5 Do not ap~ly to 1ne textured s011s or "those w1th greatif?- .... .. 
than 6% organ1c matter since unacceptable weed control may.. . . .. . 
oc ur 
..L ~ ... " I , ••••• 
c . \""~ ·'~"~"\.J)..1\U-···'" ••••• I 
I ,rS1 ~il\UBU tOPt \~,-",\. )'""V '" ~ .... : 
L 'l It; .d~' 
)"J ')." ,,, \ U" 
/"'!\" , .. 
" <\>l' 
,V'\:"I \:{

( ( 
-7-
Replanting: If initial soybean seeding fails to prOdUC(l a 
stand, reseed with soybeans within 4 months after thoroughly 
rewor~ing the soil. Do not make a second application of Duet 
because crop injury may occur. 
~ational Crops: Crops other than beans (succulent and dry), 
fre&n a~~n, grain corn, cotton, peanuts, peas (succulent and 
dry), c,hill peppers, potatoes, safflower, Concep-treatell 
sorgh • .M, soybeans, stone fruits, tree nuts and barley, buck­
wheat, millet, milo, oats, rice, rye and wheat may not be 
planted in DUet- (metolachlor) treated soil until 12 months 
after application. 
storage and Disposal 
This product may be stored at temperatures down to 20 degrees 
below O·F. 
Pesticide Disposal 
Do not contaminate water, food, or feed by storage or disposal. 
Wastes resulting from the use of this product may be disposed of 
on site or at an approved waste disposal facility. 
Container Disposal 
DO not reuse empty container. Triple rinse (or equivalenti, 
puncture and dispose of in a sanitary landfill, or by 
incineration or, if allowed by state and local authorites, by 
burning. Keep out of smoke from burning containers. 
For minor spills, leaks, etc., follow all precautions indicated 
on this label and clean up immediately. Take special care to 
avoid contamination of equipment and facilities during cleanup 
procedures and disposal of wastes. In the event of a major 
spill, fire, or other emergency, call (919)292-7100 day or 
night. 
Precautionary Statements 
Hazards to Humans and Domestic Animals 
WARNING 
• t •• , , .. , 
Causes substantial but tempo~ary eye injur¥. Wear 90gi+c~ 
or safety glasses. Harmful 1f swallowed, ~nhaled, or , 
absorbed through skin. Avoid contact with skin, eyes, .<;>r, 
clothing. Avoid breathing vapor or spray mist. Wash' .. ' , ' 
Continued ••• 8 
, , , .. 
fl' 'ljl 
III., • 
. , . • • 
•• t .,. 
, . .. 
"" . .... . 
III. II 
. , .. 
I , , •• I 
, , 
•• • 4:

-- --------------------------. 
( ( 
-8-
thoroughly with soap and water after handling. Remove 
contaminated clothing and wash before reuse. 
Statement of Pract~cal Treatment 
If inhaled: 
If on skin: 
If swallowed: 
Hold eyelids open and flush with a steady, 
gentle stream of water. Calla physician if 
irritation occurs. 
Remove victim to fresh air. 
Wash with plenty of soap and water. 
Do not induce vomiting. Give plenty of 
water to drink and call a physician or 
Poison Control Center. Do not give anything 
by mouth to an unconscious person. 
Notes to Physician: There is no specific antidote if Duet 
is ingested. Lavage stomach with care to avoid aspiration. 
Treatment with an aqueous slurry of activated charcoal can / 
be considered. Treat symptomatically. 
Environmental Ha~ards 
Do not apply directly to water or wetlands (swamps, bogs, 
marshes, potholes). Do not contaminate water by cleaning 
of equipment or disposal of wastes. 
Groundwater and Surface Water Advisory 
Metolachlor has been identified in limited sampling of 
groundwater and there is the possibility that it may leach 
through the soil to groundwater, especially where soils are 
coarse and ground water is near the surface. Following 
application and during l';-:infall events that cause runoff, 
metolachlor may reach sutface water bodies including 
streams, rivers and reservoirs. 
Care must be taken when using this product to prevent back 
siphoning into wells, spills or improper disposal of exCf'!.~s 
pesticide, spray mixtures or rinsates. . .: 
Check valves or antisiphoning devices must be used on all 
mixing and/or irrigation equipment. 
--------------
~1987 CIBA-GEIGY Corporation 
Duet" trademark of CIBA-GEIGY Corporation 
~gricultural Division 
CIBA-GEIGY Corporation 
Greensboro, North Carolina 27419 
. ... . . 
-----.- -.!.!-!. 
... 
. .. .. 
1111. I 
• •• . . 
II' 'f' . . 
...... . . ......

( 
-9-
BACK LABEL 
Herbicide 
For weed control in soybeans 
Active Ingredients: 
Metolachlor: 2-chloro-N-(2-ethyl-
6-methylphenyll-N-(2-methoxy-1-
( 
methyl ethyl ) acetamide .••................•.......••... 
Linuron: [3-(3,4-dichlorophenyll-1-methoxy-
l-meth lurea] ........................................ . 
Inert Ingre 1ents: 
Total: 
Duet contains 5.6 lbs. active ingredient per gallon. 
See directions for use inside attached booklet. 
EPA Reg. No'. 100-
EPA Est. 100-
Duet" trademark of CIBA-GEIGY Corporation 
~ 1987 CIBA-GEIGY Corporation 
2 1/2 uallons 
U.S. Standard Measure 
44.3% 
17.7% 
8. % 
100. 0% 
, ., t 
· . .. . 
• • .. . .. . 
) 
".,. I 
• •• • • 
.. 
• • I •• 
• • •••• 
• ••••• • • .. 
•• •••••• •• I •• 
• • • .. 
•• • •

------------------------------~ 
( ( 
-10-
Keep Out of Reach of Children. 
WARNING/AVISO 
, 
PRECAUTION AL USUARIO: Si usted no lee ingl~s, no use este 
producto hast a que la etiqueta haya sido explicado ampliamente. 
Precautionary Statements 
Hazards to Humans and Domestic Animals 
WARNING 
Causes substantial but temporary eye injury. Wear goggles 
or safety glasses. Harmful if swallowed, inhaled, or 
absorbed through skin. Avoid contact with skin, eyes, or 
clothing. Avoid breathing vapor or spray mist. Wash 
thoroughly with soap and water after handling. Remove 
contaminated clothing and wash before reuse. 
Statement of Practical Treatment 
If in eyes: Hola eyelids open and flush with a steady, 
gentle stream of water. Call a physician if 
irritation occurs. 
If inhaled: Remove victim to fresh air. 
If on skin: Wash with plenty of soap and water. 
If swallowed: Do not induce vomiting. Give plenty of 
water-to drink and call a physician or 
Poison Control Center. Do not give anything 
by mouth to an unconscious person. 
Notes to Physician: There is no specific antidote if Duet 
is ingested. Lavage stomach with care to avoid aspiration. 
Treatment with an aqueous slurry of activated charcoal can 
be considered. Treat symptomat~cally. 
Continued ••• 11. 
. . • 
.. . 
j 
. ..... . . . ..... . . .... , . .... . 
'0 ••• I 
• • .. 
., • I • I •• 
.. . ,. 
• . . .. 
"' , .

( ( 
-11-
Environmental Hazards 
Do not apply directly to water or wetlands (swamps, bogs, 
marshes, potholes). Do not contaminate water by cleaning 
of equipment or disposal of wastes. 
Groundwater and Surface Water Advisory 
Metolachlor has been identified in limited sampling of 
groundwater and there is the possibility that it may leach 
through the soil to groundwater, especially where soils are· 
coarse and ground water is near the surface. Following 
application and during rainfall events that cause runoff, 
metolachlor may reach surface water bodies including 
streams, rivers and reservoirs. 
Care must be taken when using this product to prevent back 
siphoning into wells, spills or improper disposal of excess 
pesticide, spray mixtures or rinsates. 
Check valves or antisiphoning devices must be used on all 
mixing and/or irrigation equipment. 
Container Disposal 
Do not reuse empty container. Triple rinse (or equivalent), 
puncture and dispose of in a sanitary landfill, or by 
incinerator, or if allowed by state and local authorities, by 
bUrning. Keep out of smoke from burning containers. 
Agricultural Division 
CIBA-GEIGY Corporation 
Greensboro, North Carolina 27419 
CGA May 1, 1987 
... 
. . 
, .. , , , 
" 
• ••••• • • • 
t ••••• 
• • .. 
• • I •• 
· • , I , • 
I •• I ... 
• • .. 
.. ..... • • .. • •