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crop-chem-docs/corpus/epa_ppls/10182-421.md
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Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-24 12:32:41 -04:00

1118 lines
43 KiB
Markdown

# TWISTER HERBICIDE
- EPA Reg No: **10182-421**
- Registrant: SYNGENTA CROP PROTECTION
- Signal word: Danger
- Active ingredients: Fluazifop-P-butyl (6.51%); Sodium salt of fomesafen (13.18%); Fenoxaprop-p-ethyl (1.86%)
- Label accepted: 1997-06-05
- Source PDF: https://www3.epa.gov/pesticides/chem_search/ppls/010182-00421-19970605.pdf
---
)
)
-~r., $'.1:('7' Page 1 of 7
TWISTERTM
Herbicide
1WISTER Container
IWJS421C.MAS - 5119/97
For Postemergence Control of Broadleaf Weeds and Grasses in Soybeans
COMPLETE DIRECTIONS FOR USE
ACTIVE INGREDIENT:
Fluazifop-P-Butyl
Butyl(R)-2-[4-[[5-(trifluromethyl)-2-pyridinyaoxy]phenoxyjpropanoate . . . . . . . • . . . . . •. 6.51 %
Fenoxaprop-P-ethyl
(+)-ethyl-2-[4-[6-(chloro-2-benzoxazolyl]oxy]phenoxyjpropanoate ................. 1.86%
Sodium salt of fomesafen
5-[2-chlor0-4-(trifluoromethyl)phenoxyj-N-
(methylsulfonyl)-2-nitrobenzamide . . . . . . . . . . . . . . . . . . • • • • . . . . • • . . . . . . . .. 13.18%
INERT INGREDIENTS ..........•.....•.•••..•.•••.•.•..... 78.45%
TOTAL . . . . . . . . . . . . . • . . . . . . . . . • . . . • • •• • . • .. 100.00%
Contains 0.571bs (+) isomer (f1uazifop-p-butyl). 0.161bs fenoxaprop-p-ethyl and 1.091bs
fomesafen (acid equivalent) active ingredient per gallon.
EPA Reg. No. 10182-421
CCEPTED
JUN 5 1997
KEEP OUT OF REACH OF CHILDREN
DANGER - PELIGRO
Si usted no entiende la etiqueta, busque a alguien para que se la explique a usted en
de~lIl!'. (If you do rI!Itund_erstand the lab~, find someone toel'plain ~ tQ_Y91! lILd~tail.)
SEE SIDE PANEL FOR STATEMENT OF PRACTICAL TREATMENT
AND PRECAUTIONARY STATEMENTS
Made in U.S.A.
ZENECA Ag Products
ZENECAlnc.
Wilmington. DE 19850c5458
)
)
Page 2 of7
1WISTER Container
1WIS421C.MAS - 5/19/97
STATEMENT OF PRACTICAL TREATMENT
IF SWALLOWED: Call a physician or Poison Control Center. Do not induce vomiting. Drink
promptly a large quantity of milk, egg whites, 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.
IF INHALED: Remove victim to fresh air. If not breathing, give artificial respiration, preferably
mouth-to-mouth. Get medical attention.
IF IN EYES: Hold eyelids open and flush with a steady, gentle stream of water for 15 minutes.
Get medical attention.
NOTE TO PHYSICIANS: Probable mucosal damage may contraindicate the use of gastric
lavage. .
FOR 24-HOUR EMERGENCY MEDICAL ASSISTANCE, CALL 1-800-F-A-$-T-M-E-D (327-
8633).
FOR CHEMICAL EMERC;;ENCY: Spill, leak, fire, exposure; or accident call CHEMTREC
1-800-424-9300.
• ..
" .' . ,
, ,
)
)
PRECAUTIONARY STATEMENTS
HAZARDS TO HUMANS AND DOMESTIC ANIMALS
DANGER
Page30f7 3lJ.-j
TWISTER Container
TWIS421C.MAS - 5119/97
This product contains fomesafen which has been determined to cause tumors in laboratory
animals (mice). Risks can be reduced by closely following use directions and precautions and by
wearing the protective clothing specified elsewhere on this label.
Corrosive. Causes irreversible eye damage and skin irritation. Harmful if swallowed, inhaled or
absorbed through skin. Do not get in eyes, on skin or on clothing. Avoid breathing vapor or
spray mist. Prolonged or frequently repeated skin contact may cause allergic reactions in some
individuals.
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 E on an EPA chemical resistance category selection
chart.
Applicators and other handlers must wear:
• Coveralls over short-sleeved shirt and short pants. .
• Chemical-resistant gloves such as Barrier Laminate, Butyl Rubber, Nitrile Rubber, Neoprene
Rubber, PVC or Viton. .
• Chemical resistant footwear plus socks.
• Protective eyewear.
• Chemical resistant apron when cleaning equipment, mixing or loading.
Follow manufacturer's instructions for cleaning/maintaining PPE. If no such instructions for
washables, use detergent and hot water. Keep and wash PPE separately from other laundry.
When handlers use closed systems, enclosed cabs, or aircraft in a manner that meets the
requirements listed in the Worker Protection Standard (WPS) for agricultural pesticides [40 CFR
170.240(d)(4-6)], the handler PPE requirements may be reduced or modified as specified in the
WPS . •
User Safety Recommendations
Users should:
• Wash hands before eating, drinking, chewing gum, using tobacco or using the toilet.
• Remove clothing immediately if pesticide gets inside. Then wash thoroughlV <'Ind put on
clean clothing.
• Remove PPE immediately after handling this product. Wash the outside ~~ o;lo',es be~cn~
removing. As soon as possible, wash thoroughly and change into clean clothi;,g. ~.
, , , .,
)
J
ENVIRONMENTAL HAZARDS
Page 4 of7
iWISTER Container
TWIS421C.MAS - 5/19/97
This product is toxic to fish. Do not apply directly to water, or to areas where surface water is
present, or to intertidal areas below the mean high water marIe Do not contaminate water when
disposing of equipment washwaters. Do not apply when weather conditions favor drift from
target area.
This product contains the active ingredient fomesafen which is known to leach through soil into
ground water under certain conditions as a result of label use. Use of this product in areas
where soils are permeable, particularly where the water table is shallow, may result in ground-
water contamination. •
PHYSICAL AND CHEMICAL HAZARDS
Do not use or store near heat or open flame.
.. . ,
)
)
CONDITIONS OF SALE
Page 5
1WISTER Container
lWIS421C.MAS - 5119/97
AND LIMITATION OF WARRANTY AND LIABILITY
The Directions for Use of this product should be followed carefully. It is impossible to eliminate
all risks inherently associated with the use of this product. Crop injury, ineffectiveness or other
unintended consequences may result because of such factors as manner of use or application,
weather or crop conditions, presence of other materials or other influencing factors in the use of
the product, which are beyond the control of ZENECA or Seller. All such risks shall be assumed
by Buyer and User, and Buyer and User agree to hold ZENECA and Seller harmless for any
claims relating to such factors.
ZENECA warrants that this product conforms to the chemical description on the label and is
reasonably fit for the purposes stated in the Directions for Use, subject to the inherent risks
referred to above, when used in accordance with directions under normal use conditions. This
warranty does not extend to the use of this product contrary to label instructions, or under
abnormal conditions or under conditions not reasonably foreseeable to or beyond the control of
Seller or ZENECA, and l3uyer and User assume the risk of ahy such use. ZENECA MAKES NO
WARRANTIES OF MERCHANTABILITY OR OF FITNESS FOR A PARTICULAR PURPOSE NOR
ANY OTHER EXPRESS OR IMPLIED WARRANTY EXCEPT AS STATED ABOVE.
In no event shall ZENECA 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 ZENECA AND SELLER FOR
ANY AND ALL CLAIMS, LOSSES, INJURIES OR DAMAGES (INCLUDING CLAIMS BASED ON
BREACH OF WARRANTY, CONTRACT, NEGLIGENCE, TORT, STRICT LIABILITY OR
OTHERWISE) RESULTING FROM THE USE OR HANDLING OF THIS PRODUCT, SHALL BE
THE RETURN OF THE PURCHASE PRICE OF THE PRODUCT OR, AT THE ELECTION OF
ZENECA OR SELLER, THE REPLACEMENT OF THE PRODUCT.
ZE~ECA and Seller offer this product, and Buyer and U~er accePt it, subject to the foregoing
conditions of sale and limitations of warranty and of liability, which may not be modified except
by written agreement signed by a duly authorized representative of ZENECA.
.. . ,
)
)
Page 6
lWlSTER Container
lWlS421C.MAS - 5/19/97
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 directly or
through drift. Only protected handlers may be in the area during application. For any
requirements specific to your State or Tribe, consult the agency responsible for pesticide
regulation.
AGRICULTURAL USE REQUIREMENTS
Use this product only in accordance with its labeling and with the Worker Protection Standard, 40
CFR part 170. Refer to supplemental labeling (Le., attached booklet) under "AGRICULTURAL
USE REQUIREMENTS" in the DIRECTIONS FOR USE section for information about this
standard.
STORAGE AND DISPOSAL
PROHIBITIONS: Do not contaminate water, food or feed by storage or disposal. Open dumping
is prohibited. Do not reuse empty container.
STORAGE: Store above 45°F in original containers only. If product solidifies, return to room
temperature and agitate to reconstitute. Keep container closed when not in use. Do not store
near food or feed. In case of spill or leak on floor or paved surfaces, soak up with sand, earth or
synthetic absorbent. Remove to chemical waste area.
PESTICIDE DISPOSAL: Pesticide wastes are acutely hazardous. Improper disposal of excess
pesticide, spray mixture or rinsate is a violation of Federal law. If these wastes cannot be
disposed of by use according to label instructions, contact your State Pesticide or Environmental
Control Agency or the Hazardous Waste Representative at the nearest EPA Regional Office for
guidance. .
CO~TA1NER DISPOSAL: . . ... . . .......... . .
Metal Containers-:- Triple rinse (or equivalent); then offer for recycling or reconditioning, or
puncture and dispose of in a sanitary landfill or by other procedures approved by state and local
authorities.
Plastic Containers: Triple rinse (or equivalent); then offer for recycling or reconditioning, or
puncture and dispose of in a sanitary landfill, or by incineration or, if allowed by state and local
authorities, by burning. If burned, stay out of smoke.
Glass Containers: Triple rinse (or equivalent); then dispose of in a sanitary landfill or by otiler
approved state and local procedures. . , .
. . . ,
)
)
FOR BULK AND MINI-BULK CONTAINERS:
Page 7
1WISTER Container
TWIS421C.MAS - 5f19f97
Container Disposal: Reseal container and offer for reconditioning, or triple rinse (or equivalent)
and offer for recycling or reconditioning, or clean in accordance with manufacturer's instructions.
Container Precautions: Before refilling, inspect thoroughly for damage, such as cracks,
punctures, bulges, dents, abrasions and damaged or worn threads on closure devices.
REFILL ONLY WITH 1WISTER. The contents of this container cannot be completely removed
by cleaning. Refilling with materials other than 1WISTER will result in contamination and may
weaken container. After filling and before transpor!ing, check for leaks.
Do not refill or transport damaged or leaking container.
CONTAINER IS NOT SAFE FOR FOOD, FEED OR DRINKING WATER.
1WISTERTM is a a trademark of a ZENECA Group Company.
,.' ,) I
, " "
.
. .. . .
.... 11 21
)
)
- ----------
TWISTERTM
Herbicide
.. ~.~.~~Page 1 of 22
TWISTER Booklet
TW1S421 B. RSB - 5/19/97
For Postemergence Control of Broadleaf Weeds and Grasses in Soybeans
COMPLETE DIRECTIONS FOR USE
ACTIVE INGREDIENT:
Fluazifop·P·Butyl
Butyl(R)-2-[4-[[5-(trifluromethyl)-2-pyridinyl]oxy]phenoxy]propanoate ............... 6.51%
Fenoxaprop-P-ethyl
(+)-ethyl-2-[4-[6-(chloro-2-benzoxazolyl]oxy]phenoxy]propanoate .......•......... 1.86%
Sodium salt of fomesafen
5-[2-chloro-4-(trifluoromethyl)phenoxy]-N-
(methylsulfonyl)-2-nitrobenzamide .......................... ' .......... 13.18%
INERT INGREDIENTS ..................................... 78.45%
TOTAL . . . . . . . . . . . . . .. . . . . ... . . . . . . . . . . . . . .. 100.00%
Contains 0.57 Ibs (+) isomer (f1uazifop-p-butyl), 0.16 Ibs fenoxaprop-p-ethyl and 1.09 Ibs
fomesafen (acid equivalent) active ingredient per gallon.
EPA Reg. No. 10182-421
KEEP OUT OF REACH OF CHILDREN
DANGER· PELIGRO
Si usted no entiende la etiqueta, busque a alguien para que se la explique a usted en
de~lIe. (If youdonCltunderstand the label, find _sorn_eonetclel(JlI~il1jLtu'QJt in detail.)
Made in U.S.A.
ZENECA Ag Products
ZENECAJnc.
Wilmington, DE 19850-5458
)
)
CONDITIONS OF SALE
Page 2
1WISTER Booklet
1WIS421B.RSB - 5/19/97
AND LIMITATION OF WARRANTY AND LIABILITY
The Directions for Use of this product should be followed carefully. It is impossible to eliminate
all risks inherently associated with the use of this product. Crop injury, ineffectiveness or other
. unintended consequences may result because of such factors as manner of use or application,
weather or crop conditions, presence of other materials or other influencing factors in the use of
the product, which are beyond the control of ZENECA or Seller. All such risks shall be assumed
by Buyer and User, and Buyer and User agree to hold ZENECA and Seller harmless for any
claims relating to such factors.
ZENECA warrants that this product conforms to the chemical description on the label and is
reasonably fit for the purposes stated in the Directions for Use, subject to the inherent risks
referred to above, when used in accordance with directions under normal use conditions. This
warranty does not extend to the use of this product contrary to label instructions, or under
abnormal conditions or under conditions not reasonably foreseeable to or beyond the control of
Seller or ZENECA, and Buyer and User assume the risk of any such use. ZENECA MAKES NO
WARRANTIES OF MERCHANTABILITY OR OF FITNESS FOR A PARTICULAR PURPOSE NOR
ANY OTHER EXPRESS OR IMPLIED WARRANTY EXCEPT AS STATED ABOVE.
In no event shall ZENECA 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 ZENECA AND SELLER FOR
ANY AND ALL CLAIMS, LOSSES, INJURIES OR DAMAGES (INCLUDING CLAIMS BASED ON
BREACH OF WARRANTY, CONTRACT, NEGLIGENCE, TORT, STRICT LIABILITY OR
OTHERWISE) RESULTING FROM THE USE OR HANDLING OF THIS PRODUCT, SHALL BE
THE RETURN OF THE PURCHASE PRICE OF THE PRODUCT OR, AT·THE ELECTION OF
ZENECA OR SELLER, THE REPLACEMENT OF THE PRODUCT.
-4 ~
ZENECA and Seller offer this product, and Buyer and User accept it, subject to the foregoing
conditions of sale and limitations of warranty and of liability, which may not be modified except
by written agreement signed by a duly authorized representative of ZENECA.
)
)
'."'.' ..
Page 3
1WISTER Booklet
IWIS421B.RSB - 5/19/97
-- _ 00 '_=-0'-_--.-,=
TABLE OF CONTENTS
STATEMENT OF PRACTICAL TREATMENT
PRECAlJTlONARY STATEMENTS
HAZARDS TO HUMANS AND DOMESTIC ANIMALS
PERSONAL PROTECTIVE EQUIPMENT
ENVIRONMENTAL HAZARDS
DIRECTIONS FOR USE
AGRICULTURAL USE REQUIREMENTS
STORAGE AND DISPOSAL
GENERAL INFORMATION
APPLICATION DIRECTIONS
Timing
Spray Additives
Ground Application
Band Applications
Aerial Application
Cultivation
GENERAL USE PRECAlJTlONS
1WISTER IN SOYBEANS - USE RATES AND WEEDS CONTROLLED
REGIONAL USE MAP
Application Rates for Weed Growth Stages
SPECIAL USE DIRECTIONS FOR ADDITIONAL WEED PROBLEMS
TANKMIX AND SEQUENTIAL APPLICATIONS FOR SOYBEANS
APPENDIX
" ..
Page
. .
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co Page 4
TWISTER Booklet
TWIS421 B. RSB - 5119/97
STATEMENT OF PRACTICAL TREATMENT
IF SWALLOWED: call a physician or Poison Control Center. Do not induce vomiting. Drink
promptly a large quantity of milk, egg whites, 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.
IF INHALED: Remove victim to fresh air. If not breathing, give artificial respiration, preferably
mouth-ta-mouth. Get medical attention.
IF IN EYES: Hold eyelids open and flush with a steady, gentle stream of water for 15 minutes.
Get medical attention.
NOTE TO PHYSICIANS: Probable mucosal damage may contraindicate the use of gastric
lavage.
FOR 24-HOUR EMERGENCY MEDICAL ASSISTANCE, CALL 1-800-F-A-8-T-M-E-D (327-
8633).
FOR CHEMICAL EMERGENCY: Spill, leak, fire, exposure, or accident call CHEMTREC
1-800-424-9300. .
• ..
. , .
)
)
. Page 5
TWISTER Booklet
1WlS421B.RSB - 5f19f97
PRECAUTIONARY STATEMENTS
HAZARDS TO HUMANS AND DOMESTIC ANIMALS
DANGER
This product contains fomesafen which has been determined to cause tumors in laboratory
animals (mice). Risks can be reduced by closely following use directions and precautions and by
wearing the protective clothing specified elsewhere on this label.
Corrosive. Causes irreversible eye damage and skin irritation. Harmful if swallowed, inhaled or
absorbed through skin. Do not get in eyes, on skin or on clothing. Avoid breathing vapor or
spray mist. Prolonged or frequently repeated skin contact may cause allergic reactions in some
individuals.
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 E on an EPA chemical resistance category selection
chart.
Applicators and other handlers must wear.
• Coveralls over short-sleeved shirt and short pants.
• Chemical-resistant gloves such as Barrier Laminate, Butyl Rubber, Nitrile Rubber, Neoprene
Rubber, PVC or Viton.
• Chemical resistant footwear plus socks.
• Protective eyewear.
• Chemical resistant apron when cleaning equipment, mixing or loading.
FollOW manufacturer's instructions for cleaning/maintaining PPE. If no such instructions for
washables, use detergent and hot water. Keep and wash PPE separately from other laundry.
When handlers use closed systems, enclosed cabs, or aircraft in a manner that meets the
requirements listed in the Worker Protection Standard (WPS) for agricultural pesticides [40 CFR
170.240(d)(4-6)]. the handlerPPE requirements may be reduced or modified as specified in the
WPS.. . ..... .
~ .
User Safety Recommendations
Users should:
• Wash hands before eating, drinking, chewing gum, using tobacco or using the toilet.
• Remove clothing immediately if pesticide gets inside. Then wash thoroughly and put 0:1·
clean clothing. .
• Remove PPE immediately after handling this product. Wash the outside of ijlyves befor!>
removing. As soon as pOSSible, wash thoroughly and change into clean cl?thi~.~.
" . , .
)
ENVIRONMENTAL HAZARDS
Page 6" ( '3-1~'J
1WISTER Booklet
1WIS421B.RSB - 5/19/97
This product is toxic to fish. Do not apply directly to water, or to areas where surface water is
present, or to intertidal areas below the mean high water mark. Do not contaminate water when
disposing of equipment washwaters. Do not apply when weather conditions favor drift from
target area. .. ..
PHYSICAL AND CHEMICAL HAZARDS
Do not use or store near heat or open flame.
BEST AVAILABLE COpy
)
)
DIRECTIONS FOR USE
Page 7 /l(.t )..?
1WISTER Booklet
1WIS421B.RSB - 5/19/97
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 directly or
through drift. Only protected handlers may be in the area during application. For any
requirements specific to your State or Tribe, consult the agency responsible for pesticide
regulation.
AGRICULTURAL USE REQUIREMENTS
Use this product only in a=rdance 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 greennouses, 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 (REI) of
24 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 over short-sleeved shirt and short pants.
• Chemical-resistant gloves such as Barrier Laminate, Butyl Rubber, Nitrile Rubber, Neoprene
Rubber, PVC or Viton. ... .
• Chemical resistant footwear plus socks.
• Protective eyewear.
)
~-~---- - -- ---- - -------- Page 8
TWISTER Booklet
TWIS421B.RSB - 5/19/97
STORAGE AND DISPOSAL
PROHIBITIONS: Do not contaminate water, food or feed by storage or disposal. Open dumping
is prohibited. Do not reuse empty container.
STORAGE: Store above 45°F in original containers only. If product solidifies, return to room
temperature and agitate to reconstitute. Keep container closed when not in use. Do not store
near food or feed. In case of spill or leak on floor or paved surfaces, soak up with sand, earth or
synthetic absorbent. Remove to chemical waste area.
PESTICIDE DISPOSAL: Pesticide wastes are acutely hazardous. Improper disposal of excess
pesticide, spray mixture or rinsate is a violation of Federal law. If these wastes cannot be
disposed of by use according to label instructions, contact your State Pesticide or Environmental
Control Agency or the Hazardous Waste Representative at the nearest EPA Regional Office for
guidance.
CONTAINER DISPOSAL:
Metal Containers: Triple rinse (or equivalent); then offer for recycling or reconditioning, or
puncture and dispose of in a sanitary landfill or by other procedures approved by state and local
authorities.
Plastic Containers: Triple rinse (or equivalent); then offer for recycling or reconditioning, or
puncture and dispose of in a sanitary landfill, or by incineration or, if allowed by state and local
authorities, by buming. If bumed, stay out of smoke.
Glass Containers: Triple rinse (or equivalent); then dispose of in a sanitary landfill or by other
approved state and local procedures.
FOR BULK AND MINI-BULK CONTAINERS:
Container Disposal: Reseal container and offer for reconditioning, or triple rinse (or equivalent)
and offer for recycling or reconditioning, or clean in a=rdance with manufacturer's instructions.
Container Precautions: Before refilling, inspect thoroughly for damage, such as cracks,
punctures, bulges, dents, abrasions and damaged or wom threads on closure devices.
REFILL ONLY WITH TWISTER. The contents of this container cannot be completely removed
bY-f:leahing. Refilling with materials other than TWISTER will result in contamination and may
weaken container. After filling I3nd before transporting, check for leaks.
Do not refill or transport damaged or leaking container.
CONTAINER IS NOT SAFE FOR FOOD, FEED OR DRINKING WATER.
GENERAL INFORMATION
Read all label directions before using.
TWISTER herbicide is a selective early postemergence herbicide for control of gl "ss ant::
broadleaf weeds in soybeans.
TWISTER herbicide has systemic activity moving from the treated foliage into the shoots; r""t;,
rhizomes, stolons, and growing points (meristematic regions) of treated grass weeds ann cont::tct
activity for broadleaf weeds. Thorough coverage of all weed plant foliage is important for good
)
)
Page 9
TWISTER Booklet
1WIS421B.RSB - 5/19/97
activity. Optimum weed control is achieved when young actively growing weeds are treated that
are not under stress from moisture, temperature, low soil fertility, mechanical or chemical injury.
Best perennial grass control can be obtained if rhizomes or stolens are cut up by preplant tillage
practices (discing, plowing, etc.) to stimulate emergence of grass shoots.
Control Symptoms: Growth of treated grass weeds stops soon after application. Symptoms
include loss of vigor, yellowing and/or reddening, and eventual death to the treated grass plant.
Symptoms on grass weeds are generally observed within one week, depending on species and
environmental conditions.
Symptoms on broadleaf weeds occur within 3 days and appear as browning and crinkling.
Soybean plants are tolerant to 1WISTER herbicide when it is applied at the recommended rate.
There may be slight bronzing, crinkling or spotting of soybean leaves but soybeans soon outgrow
these effects and develop normally.
Information on Weed Resistance:
Naturally occurring biotypes of certain grass species with resistance to this Herbicide and related
products (same mode of action) are known to exist. Selection of resistant biotypes, through
repeated use of these herbicides, may result in control failures.
If poor performance cannot be attributed to adverse weather' conditions or improper application
methods, a resistant biotype may be present. In such a case, additional treatments with this
herbicide or related products is not recommended. Consult your local company representative or
agricultural advisor for assistance.
APPLICATION DIRECTIONS
TIMING: Best control of susceptible weeds is obtained when 1WISTER is applied early to
actively growing weeds. This usually occurs 14 to 28 days after planting. Refer to the weed
tables for specific recommendations on weed growth stages, retes, and regions.
SPRAY ADDITIVES: Only spray additives cleared for use on growing crops under 40 CFR
18~.1001 may be used.
In the Northern region (see Regional Use Map), 1WISTER should be used with a minimum of
2.5% of liquid nitrogen (28% or similar) or a minimum of 10 pounds ammonium sulfate per 100
gallons of spray volume.
Liquid and dry nitrogen fertilizer should not be used as a substitute for crop oil concentrate or
non ionic surfactant in the spray mixture.
. .. ..
)
)
Page 10
TWISTER Booklet
TWIS421B.RSB - 5/19/97
Always Add One oftile Following:
Nonionic Surfactant (NIS) - Use NIS containing at least 75% surface active agent at 0.25%-
0.5% (1/2-1 pint per 25 gal/ons) of the finished spray volume (Southern Region Only).
Crop Oil Concentrate (COC) - Use a nonphytotoxic cae or a once refined vegetable oil
concentrate (VOe, MSO) containing 15-20% approved emulsifier at 0.5%-1% (1-2 pints per 25
gal/ons) of finished spray volume.
Other Adjuvants - Adjuvants other than cae or NIS may be used providing the product meets
the following criteria:
1. Contains only EPA exempt ingredients.
2. Is non phytotoxic to the target crop.
3. Is compatible in mixture. (May be established through a jar test.)
4. Is supported locally for use with TWISTER on the target crop through proven field trials
and through university and extension recommendations. .
Recommended Mixing Order:
1. Half required amount of water, begin agitation.'
2. Dry pesticide formulations.
3. TWISTER herbicide.
4. Liquid pesticide formulation.
5. Adjuvant (COC or NIS) and fertilizer.
'Compatibilityagent, 1 gal/on/500 gal/ons of water or 0.2% vlv, may be added as needed.
GROUND APPLICATION: Use sufficient spray volume and pressure to ensure complete
coverage of the target weeds. A spray volume of 10-20 gal/ons per acre and 30-60 psi at the
nozzle tip is recommended. When weed foliage is dense, use 60 psi and a minimum of 20
gallons per acre to ensure coverage of weed foliage.
Use only hollow cone or fiat fan nozzles. The sprayer must be calibrated to provide the proper
volume:. and rate per acre. In addition, the boom and nozzle height must be adjusted to provide
cqmplete coverage of all weeds.
DO NOT USE FLOOD TYPE OR OTHER SPRAY NOZZLES, WHICH DELIVER COARSE,
LARGE DROPLET SPRAYS.
DO NOT APPLY THIS PRODUCT THROUGH ANY TYPE OF IRRIGATION SYSTEM.
BAND APPLICATIONS: Thorough weed coverage is important for control. Best coverage is .
obtained with a minimum of two nozzles, one directed to each side of the planted row.
Application with a single nozzle directed over the top of the row is not recommended. Cultivatio:m
of untreated areas may be needed following band applications. When making t2r.d applications
and cultivating in the same operation, position nozzles in advance of the cultivationdevic(.. This
will reduce dust in the spray area. Dust can intercept spray, reducing weed C011-:l(cl,]e, resuiiilig
in less than adequate weed control.
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TWISTER Booklet
TWIS421B.RSB - 5/19/97
Calculate the amount of herbicide and water volume needed for band treatment by the following
formulas: --
Baog widthio incb!!~ X broadcast rate = Band herbicide rate
row width in inches per acre per acre
El!30g I!!idtb io iD!<b!il~ X broadcast volume = Band water volume
row width in inches per acre per acre
AERIAL APPLICATION: Use sufficient spray volume and pressure to ensure complete
coverage of the target weeds. A minimum of 5 gallons per acre of spray mixture should be
applied with a maximum of 40 PSI pressure. When broadleaf we_ed foliage is dense, use a
minimum of10 gallons per acre to ensure coverage of weed fOliage.
CULTIVATION: Cultivation prior to application is not recommended. Cultivation may put weeds
under stress, reducing weed control. Timely cultivation 1-3 weeks after applying TWISTER may
assist weed control.
GENERAL USE PRECAUTIONS
• A maximum of 2.75 pints/A of TWISTER herbicide may be used per season in Region 1 (see
Regional Use Map).
• A maximum of 2.75 pints/A of TWISTER herbicide may be applied in alternate years in
Region 2 (see Regional Use Map).
• A maximum of 2.25 pints/A of TWISTER herbicide may be applied in alternate years in
Region 3 (see Regional Use Map).
• A maximum of 1.8 pints/A of TWISTER herbicide may be applied in alternate years in Region
4 (see Regional Use Map).
• Do not apply TWISTER or any other fomesafen containing product to any field in Regions 2, 3
) or 4 more than once every two years.
• fhoroughly clean spray tank with water and a commercial tank cleaner before and after each
use.
• Do not apply TWISTER less than 90 days before harvesting soybeans.
• Tankmixes of TWISTER herbicide with other pesticides, fertilizers or any other additives
except as specified on this label or other approved ZENECA supplemental labels may result
in tankmix incompatibility, unsatisfactory performance and/or unsatisfactory crop injury.
• TWISTER herbicide requires a 1-hour rain-free period for best results.
• Apply to actively growing weeds. Avoid applying TWISTER to weeds or soy::c".:.r.::; whict, a;"
under stress from moisture, temperature, low soil fertility, mechanical or chemiu.1 injury, :;os
reduced weed control and/or increased crop injury may result.
• Avoid overlapping spray swaths, as injury may occur to rotational crops.
)
Page 12
TWISTER Sooklet
TWIS4218.RSS - 5/19/97
• Avoid drift to all other crops and nontarget areas. Crops other than soybeans may be severely
injured by drift. Application is prohibited when wind velocity exceeds 10 mph. Do not make
ground or aerial application during temperature inversions.
• To provide adequate coverage, it is recommended that ground speed not exceed 10 MPH
during application.
• Do not graze treated areas or harvest for forage or hay.
ROTATIONAL CROP RESTRICTIONS
The following rotational crops may be planted after applying TWISTER at recommended rates in
soybeans:
Minimum Rotation Interval
Crop To Be Planted (Months After Last TWISTER Application)
Small grains such as wheat, barley, rye . . . . .. . . . • • • • • • . . . • . . . . . .. 4·
Alfalfa, beans, com·, cotton, peanuts, peas, rice ................. " 10
To avoid crop injury do not plant sunflowers, sugar beets,
sorghum" or any other crop within ............•..... '.' ...... , .. 18
Do not graze rotated small grain crops or harvest forage or straw for livestock. In the event of
crop loss due to weather conditions soybeans can be replanted.
·Use 18 month minimum rotation interval for sweet com in the states of Maine, Massachusetts,
New Hampshire, New York, Rhode Island and Vermont.
"Sorghum may be planted back after 10 months in Region 1.
, " , ., . ,
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Page 13
!WISTER Booklet
1WlS421B.RSB - 5/19/97
TWISTER IN SOYBEANS - USE RATES AND WEEDS CONTROLLED
REFER TO MAP FOR DEFINITION OF SPECIFIED
GEOGRAPHIC REGIONS
REGION 1
Region 1 - Includes the following states or portion of states where 1WISTER herbicide may be
applied: Alabama, Arkansas, Florida, Georgia, Louisiana, MiSSissippi, Missouri (COunties of
BOllinger, Butler, Cape Giradeau, Dunklin, Madison, Mississippi, New Madrid, Pemiscot, Perry,
Ripley, Scott, Stoddard and Wayne), North carolina, Oklahoma (East of U. S. Highway 75 and
East of Indian Nation Parkway), South carolina, Tennessee and Texas (all areas East of
Highway 77 to State Road 239, including all of calhoun COunty).
REGION 2
REGION 2 - Includes the following states where 1WISTER may be applied: Delaware, Illinois
(South of Interstate 70), Indiana (South of Interstate 70), Kentucky, Maryland, Ohio (South of
Interstate 70), Virginia and West Virginia.
REGION 3
REGION 3 - Includes the following states or portion of states where 1WISTER may be applied:
Indiana (all areas not in Region 2), Illinois (all areas not in Region 2), Iowa, Maine,
Massachusetts, Missouri (all counties except for those listed in Region 1), New Hampshire, New
Jersey, New York, Ohio (all areas not in Region 2), Pennsylvania, Rhode ISland, Vermont, and
Wisconsin (South of U.S. Highway 18 between Prairie Du Chien and Madison, and South of
Interstate 94 between Madison and Milwaukee).
REGION 4
REGION 4 - Includes the following states or portion of states where 1WISTER may be applied:
Kansas (all areas east of U.S. Highway 75), Michigan (all areas south of State Road 55),
Minnesota (all areas south of U.S. Highway 212), Nebraska (all areas east of U.S. Highway 81),
and Wisconsin (North of U.S. Highway 18 between Prairie Du Chien and Madison, and South of
Interstate 94 from Hudson to Madison).
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Page 14
TWISTER Booklet
TWIS421B.RSB - 5/19/97
APPLICATION RATES FOR WEED GROWTH STAGES
Weeds Controlled TWISTER Rate (Pts/A)
Maximum Growth Stage Controlled At
1.8 Pts/A 2.25 Pts/A 2.75 PIs/A
Broadleaf Weeds # of True Leaves # of True Leaves # of True Leaves
Anoda,Spurred 2" 2 4
carpetweed 8" Diameter Size Unlimited Size Unlimited Size
Citron (Wild Watermelonl 4 4 6
Cocklebur, Common 4 6 8
Copperleaf, Hophombeam 4 4 6
Copperleaf, Virginia 4 4 6
Crotalaria, Showy 6 6 6
Croton, Tropic 4 4 6
Cucumber, Volunteer 4 6 8
Ecl~ta 2 4 4
Groundch~lT)I, Cutleaf 4 6 8
Jimsonweed 6 8 8
Ladysthumb 2 4 6
Lambsquarters, Common 2" 2" 2"
Mexicanweed 2" 2 4
Momingglory
Cypressvine 4 6 6
~
Entireleaf var. 3 4 5
IV}IIeaf 3 4 5
Purple Moonflower 3 5 6
Red (Scarlet) 3 6 6
Smallflower 3 4 f)
Pitted (Smallwhite) 4 6 6 -- --
Tali (Common) 2 3 :i
PalmleafJWillowleafl 3 6 6
Mustard, Wild 6 8 .... 8
Nightshade, Black 4 6 f, ...
Nutsedge, YellOW "
. . • - -
Piqweed sPP.
Weeds Controlled
Broadleaf Weeds
Amaranth, Palmer
Amaranth, Spiny
Redroot
Smooth
Waterhemp, Common
Waterhemp, Tall
Poinsettia, Wild
) Purslane, Common
Pusley, Florida
Ragweed, Common
Ragweed, Giant
Redweed
Sesbania, Hemp
SickJepod
Sida, Prickly
Smartweed, Pennsylvania
Smellmelon
) Spurge, Prostrate
.. ~uIge, ~otted
Starbur, Bristly
Sunflower, Common
Velvetleaf
Venice Mallow
Witchweed
Yellow Rocket
"Suppression Only
Page 15
TWISTER Booklet
TWIS421B.RSB - 5/19/97
TWISTER Rate (Pts/A)
Maximum Growth Stage Controlled At
1.8 PIs/A 2.25 Pts/A 2.75 Pts/A
# of True Leaves # of True Leaves # of True Leaves
4 6 6
2 4 6
4 6 8
4 6 6
4 4 6
4 4 6
2 ·4 6
Multi-Leaf Multi-Leaf Multi-Leaf
6" Diameter 8" Diameter 8" Diameter
2 2 4
4 6 8
4 6 8
- 2· 3·
8 12 12
- Cotyledon" Cotyledon-
2· 2 4
4 6 6
2 2 4
- 1" Diameter* 2" Diameter-
- 2· 2·
4 4 6
2 4 6
4 4 6
6 6 8
Multi-leaf Multi-leaf MIJlti-ieHf
Up to 7" Up to 10" Up to 10"
4 6 8
Weeds Controlled
.
Grass Weeds
Bamyarclgrass
Bermudagrass
Broadleaf SiQnalQrass
Crabgrass
Downy Brome
Fall Panicum
Field Sandbur
Foxtails
Giant Foxtail
Green Foxtail
Yellow Foxtail
Goosegrass
Italian Ryegrass
Itchg_rass
Johnsongrass. Rhizome
Johnsongrass. Seedling
) Junglerice
otJac'brass
Red Rice
Shattercane
Sorghum almum
Southern Sandbur
Texas Panicum
Volunteer Cereals
V. Barley
V.Com
V. Milo
V. Oats
Page 16
TWISTER Booklet
TWIS4218.RS8 - 5/19/97
TWISTER Rate (Pts/A)
Maximum Growth Stage Controlled At
1.8 Pts/A 2.25 Pts/A 2.75 Pts/A
Ht. (In.) Ht. (In.) Ht. (In.)
2 4 4
- 4 8
- 2 4
2 2 4
4 4 6
4 ·4 6
2 2 4
4 6 8
4 2 4
- 2 3
2 2 4
2 2 4
6 12 24
- 10 18
4 6 8
1 2 3
- 6* 10
- 1 1
4 6 12
4 6 12
1 2 4 ---
2 4 !:S
4 4 6
12 24 24
4 6 12
4 6 6'"
fl-J'} 2..;
Weeds Controlled
Grass Weeds
V. Rye
V. Wheat
Wild Oats
Wild Proso Millet
Wirestem Muhly
WitchQress
~~ . ~~
Woolly Cupgrass
• Suppression Only
)
• ..
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Page 17
TWISTER Booklet
TWIS421B.RSB - 5/19/97
TWISTER Rate (Pts/A)
Maximum Growth Stage Controlled At
1.8 PlsIA 2.25 Pts/A
Ht. (In.) Ht. (In.)
4 6
4 6
4 6
4 8
- 4
2 .4
- 2
I
2.75 PtsiA
Ht. (In.)
6
6
6
10
12
4
4
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... Page 18
1WISTER Booklet
1WIS421B.RSB - 5/19/97
SPECIAL USE DIRECTIONS FOR ADDITIONAL WEED PROBLEMS
Suppression of Perennial Weeds:
Use of 1WISTER at rates of 2.25-2.75 pints/acre will aid in suppressing the above-ground
portions of the weeds listed below until crop canopy can assist in suppression. Perennial weeds
centinue to regroW from underground rootstocks even if above-ground foliage is temporarily
centrolled or retarded. Even though 1WISTER and crop cempetition can suppress perennial
weeds for a growing season, the rootstocks will centinue to live and reestablishment will occur in
subsequent years.
Milkweed, Climbing
Milkweed, Honeyvine
Bindweed, Field
Bindweed, Hedge
Trumpetcreeper
TANKMIX AND SEQUENTIAL APPLICATIONS FOR SOYBEANS
1WISTER can be used sequentially or in tankmix with one or more of the following products:
Pursuit"', Basagran"', Classic"', Concert"', Pinnacle"', Synchrony STS", Scepter"', Scepter'" OT,
Resource", Butyrac" and Roundup Ultra.
Under certain conditions, the mixture of 1WISTER with one of the above mentioned broadleaf
herbicides may cause a reduction in activity of postemergence grass centrol.
For sequential applications, allow 7 days after application of 1WISTER before applying any other
postemergence grass or broadleaf herbicide.
Tankmix applications can result in increases in crop injury as cempared to either product used
alone.
Do not exceed 1 fluid ounce of Butyrac per acre in mixture with 1WISTER.
AI\I¥aY3 read and follow the restricti()ns,!ndJimitatiClI15. for all products whether used alone,
sequentially or in a tankmix. The most restrictive labelling of any product used applies .
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APPENDIX
--Page 19
1WISTER Booklet
'1WIS421B.RSB - 5/19/97
Scientific names are listed for those weeds referred to in the 1WISTER label.
COMMON NAME SCIENTIFIC NAME
Amaranth, Palmer Amaranthus palmeri
Amaranth, Spiny Amaranthus spinosus
Anoda, Spurred Anoda cristata
Bamyardgrass Echinochloa crus-galli
Bermudagrass Cynodon dacty/on
Bindweed, Field Convolvulus arvensis
Bindweed, Hedge Galystegia sepium
Broadleaf Signalgrass Brachiaria platyphy/la
Brome, Downy Bromus tectorum
Carpetweed Mollugo verticillata
Citron (Wild Watermelon) Citrullus vulgaris
Cocklebur, Common Xanthium strumarium
Copper/eaf, Hophombeam Acalypha ostryifo/ia
Copper/eaf, Virginia Acalypha virginica
Crabgrass Digitaria spp.
Crotalaria, Showy Crotalaria spectabilis
Croton, Tropic croton glandu/osus
Cucumber, Volunteer Cucumis sativas
E~lipte EClipta !,!ostrata
Field Sandbur Cenchrus incertus
Foxtail, Giant setaria faberi
Foxtail, Green Setaria viridis
Foxtail, Yellow Setaria glauca
Goosegrass Eleusine indica
Groundcherry, Cutleaf Physalis angulata
Itch grass . - .
Rottboellia exaltata , ,
Jimsonweed Datura stramonium , .
Johnsongrass, Rhizome Sorghum halapense --:-
Johnsongrass, Seedling Sorghum hale~nse
Junglerice Echinochloa co/onum ..
.'
.
COMMON NAME
Lad}'Sthumb
Lambsquarters, Common
Mexicanweed
Milkweed, Climbing
Milkweed, Honeyvine
Mominggiory, Cypressvine
Entireleaf
Ivyleaf
Purple Moonflower
Red (Scarlet)
Smallflower
Pitted (Smallwhite)
Tall (Common)
Palmleaf (Willowleaf)
Mustard, Wild
Nightshade, Black
Nutsedge, Yellow
Panicum, Fall
- ---
Panicum, TeXas
,)
Pigweed, Redroot
Pigweed, Smooth
..
Poinsettia, Wild
Purslane, Common
Pusley, Florida
Quackgrass
Ragweed, Common
Ragweed, Giant
Redweed
..
Red Rice
Ryegrass, Italian
Sesbania, Hemp
Shattercane
Sicklepod
:6.1.~'·
Page 20
TWISTER Booklet
TWIS421B.RSB - 5/19/97
.. -
SCIENTIFIC NAME
Polygonumpersicaria
Chenopodium album
Caperonia castaniifolia
Sarcostemma cyanchoides
Ampe/amus albidus
Ipomoea quamoclit
Ipomoea hederacea var. integriuscula
Ipomoea hederacea var. hederacea
Ipomoea turbinata
Ipomoea coccinea
Jacquemontia tamnifolia
Ipomoealacunosa
Ipomoea purpurea
Ipomoea wrightii
Brassica kaber
Solanum nigrum
Cyperus esculentus
Panicum dichotomiflorum
Panicum texanum
Amaranthus retronexus.
Amaranthus hybridus
Euphorbia heterophylla
Portulaca oleracea
Richardia scabra
Agropyron repens
Ambrosia artemisiifolia ,----
Ambrosia trifida . ,
,
Melochia corchorifolia
, ,
, ,
Oryza sativa . ,
.-
Lolium multiflorum , .
Sesbania exaltata
So...rghum bicolor -~
Cassia obtusifofia
·~·"7:.fl<Z-1·
COMMON NAME
Sida, Prickly
Smartweed, Pennsylvania
Smell melon
Sorghum almum
Southern Sandbur
Spurge, Prostrate
Spurge, Sf'Otted
Starbur, Bristly
Sunflower, Common
Trumpetcreeper
Velvetleaf
Venice Mallow
Volunteer Cereals
V. Barley
V.Com
V. Milo
V. Oats
V. Rye
V. Wheat
)
Waterhemp, Common
Waterhemp, Tall
• 'Nild'Oats
Wild Proso Millet
Wirestem Muhly
Witchgrass
Witchweed
Wooly Cupgrass
Yellow Rocket
Page 21
1WISTER Booklet
1WIS421B.RSB - 5/19/97
SCIENTIFIC NAME
Sida spinosa
Polygonum pensylvanicum
Cucumis melo
Sorghum almum
Cenchrus echinatus
Euphorbia humistrata
Euphorbia maculata
Acanthospermum hispidum
Helianthus annuus
Campsis redicans
Abutilon theophrasti
Hibiscus trionum
Hordeum vulgare
Zeamays
Sorghum bic%r
Avena sativa
Seca/e cereale
Triticum aestivum
Amaranthus rudis
Amaranthus tubercu/atos
Avena fatua
Panicum miliaceum
Muh/enbergia frondosa
Panicum capillare
Striga asiatica
Erioch/oa villosa
Barbarea vulgaris --- -
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.~.. cPage 22
TWJSTER Booklet
TWIS421B.RSB - 5/19/97
TWISTERTM is a a trademark of a ZENECA Group Company.
Basagran'" is a trademark of 8ASF Corporation.
Classic'", Concert'", Pinnacle'" and Synchrony STS'" are trademarks of E.I. DuPont de Nemours &
Co., Inc.
Pursuit'", Scepter'" and Scepter'" OT are trademarks of American Home Products.
Resource'" are trademarks of Valent Chemical Co.
Butyrac'" is a trademark of Rhone Poulenc Ag Company.
Roundup'" Ultra is a trademark of Monsanto Company.