# WEEDONE MCPA ESTER

- EPA Reg No: **264-240**
- Registrant: BAYER CROPSCIENCE, LLC
- Signal word: Warning
- Active ingredients: Butoxyethyl 2-methyl-4-chlorophenoxyacetate (66.7%)
- Label accepted: 1983-01-18
- Source PDF: https://www3.epa.gov/pesticides/chem_search/ppls/000264-00240-19830118.pdf

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Controls broadleal weeds In small grain .. 
ACTIVE INGREDIENT: 
~.~.,*"2~"'",*","'._1 ,,,,., .................. 7"4 
URT INGREDIENTS: ••..•••••••••••••••••••••••••••••••••• :13.3"4 
-z IAetf'l,t "<Noo~I')",* ~ ....... ""' ...... .....,. If 4.0 ~ .. 
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~""'~No.H4-2<O U.U"'H4-~1 
~eep oul 01 reach 01 children 
WARNING 
PRECAUTIONARY STATEMENTS: So.lnllde booklet 
IN CASE OF EMERGENCY, TELEPHONE COlLECT 
(H HOURS A OAY) IN THE U.S.A. (304) 7'4·3417 
lINiON CARBIDE AGRICUlTURAl PRODUCTS COfoO"""". NC. 
PO 801 1201", T. W. AleaAn6tI Otl¥l. RI .. .,,,, 'i"'~ P&ttL..WCI77Ol 
.....OE IN USA 
CONTENTS 2.5 GAL. 
00 NOT OlTAeM .OO"",IT ,ao" CONTAINUI 
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DIRECTIONS 
I! is.a violat~on of Federal law to use this product in a manner inconsistent wlth lts labellng. 
Use the lower rate where susceptible weeds such as lambsquarters, mustards, 
ragweed, stinkweed, wild radish, yellow rocket, purslane, peppergrass, 
shepherdspurse, hempnettle and annual sowthistle are a problem. Use the 
higher rate where less susceptible weeds such as dandelion, plantain, pigweed, 
pennycress, kochia and perennial sowthistle are a problem. 
CROP 
SMALL GRAINS (Wheat, Barley, 
Spring Planted 
(not seeded to legumes) 
Fall Planted 
(not seeded to legumes) 
Fall application 
Spring application 
AMUl~~~T 
WEEOOllE~ 
HCPA 
Ester 
Per Acre 
Rye) 
liZ to 1 liZ 
pints 
lIZ to 1 pint 
lIZ to 1 liZ 
pint 
DIRECTIONS 
Treat when grain is fully tillered 
and 8 to 10 inches tall. Do not 
spray grain in the boot to dough 
stage. Use at least 8 to 10 
gallons of water per acre for 
ground application and at least 3 
to 5 gallons of water per acre for 
aerial application. 
The safest ti~e to treat fall 
plant~d small grains is when they 
are fully tillered and 8 to 10 
inches tall. Infestations of 
broadleaf weeds germinating in 
fall and winter may, however, 
justify treatment at an earlier 
stage. Fall planted wheat, 
barley. or rye can be sprayed with 
112 to 1 pht of WEEOONE HCPA 
Ester per acre from the 3 to 4 
leaf stage to the boot stage. 
Apply in early spring when annual 
broadleaf weeds are small and 
grain is fully tillered but before 
grain is in the jointed sta1~. 
Use at least 8 to 10 gallons of 
water per acre for ground 
applications and at least 3 ~J c 
gallons of water per acre for 
aerial applications. 
Do not forage Or graze meat animals on treated areas within seven days o~ 
slaughter. 
1 1087p 
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CROP 
FlAX 
OATS 
RICE 
AMOUNT 
WEEOONEs 
MCPA 
Ester 
Per Acre 
1/4 to 3/8 
pint 
1/2 pint 
1/2 tll 1 pint 
1 112 to 2 1/2 
pints 
DIRECTIONS 
Where susceptible weeds such is 
mustird are the Main problem. 
Where weeds such as pigweed, 
lambsquarters, stinkweed, ragweed, 
cocklebur are the problem. Apply 
when flax is 2 to 8 inches tall 
but before bud stage. Do not spray 
after flax is in the bud stage or 
severe damage may result. Use at 
least 8 to 10 gallons of water per 
acre for ground applications and 
at least 3 to 5 gallons of water 
per acre for aerial ipplicition. 
Spray after oats are fully 
tillered (4 to 6 inches tall) but 
before they ire in the boot to 
dough stage. Apply the lower rate 
where innual weeds are the problem 
the higher rate for perennial 
weeds. Use at least 8 to 10 
gallons of water per acre for 
ground application and at least 3 
to 5 gallons of water per acre for 
ierial applicition. 
Treat 7 to 10 weeks after planting 
when rice is fully tillered ind 6 
to 8 inches above water. Do not 
spray ifter rice is in the boot 
stage. Use the higher rate where 
curly indigo, sedge, or bulrush 
are the major problem. Use lower 
rat2 for arrowhead, water plantain 
and redstem. Use at least 8 to 10 
gallons of water per acre for 
ground application and at ;~dSt 3 
to 5 gallons of water per acr~ for 
aerial appl ications. 00 net s;lray 
when temperatures are over 90· F. 
Do not grow crayfish or catfish in treated rice fields. 
00 not forage or graze meat animals on treated areas within seV2n days ot 
~laughter. 
2 1087p 
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WEEDONE MCPA ESTER AND BRDMINAL® 
Broadleaf Herbicide or ME4'" BROMINAL Bromoxynil 
Broadleif Herbicide Tank Mixtures 
When using WEEOONE MCPA Ester in combination with BROMINAL or ME4~ Brominal 
u~e the higher rates and volumes for larger weeds or where weed growth is slow 
due to dry or cold weather. 
CROP 
SMALL GRAINS 
(Wheat. Barley. Oats 
ind Rye) 
Washington. Oregon 
ind Idaho 
Cereal Areas e~cept 
Wa~hington. Oregon & 
Idaho 
Amount of 
Herbicide 
Per Acre 
112 to 1 pint 
WEEDONE MCPA 
Ester + .375 
to .5 lbs 
active' 
bromo~yn i 1 
112 to 1 pint 
WEEOONE MCPA 
Ester + .25 to 
.375 lbs active" 
bromoxyni 1 
DIRECTIONS 
Apply after grain is fully 
tillered and hefore the forming 
of joints in the stems. Use 10 to 
iO gallon~ of water per acre for 
ground application and 4 to 10 
gallons of water per icre for 
aerial application. Use higher 
volume on larger weeds. 
Do not forage or graze meat animdls on treated areas within seven days of 
slaughter. 
"BROMINAL® contains 2 lbs active bromoxynil per gallon. 
~ME4~ Brominal® contains 4 lbs active bromoxynil per gallon. 
To Convert local recommendation into term~ of WEEDONE MCPA ESTER use the 
following table: 
--------------------------------------------------
_=3/.....:4_1:.::b:.---=1/..=2 1 b 3/8 1 b._---=1.:../4-'--.:1.=.b 
WEEOONE MCPA 
EST ER ___ -=2:....=c1/c.:2o..L-p ~ • 2 pt. 
IMPORTANT 
Clovers and other legumes may be injured or killed by these rites. 
3 1087p 
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PRECAUTIONARY STA TEf.1ENTS 
HI,ZARDS TO HU,,"ANS AND DOMESTIC ANIMALS 
WA;:(NING 
May be fatal if absorbed through skin. Harmful if swallowed. 
Do not get in eyes, on skin or on clothing. Avoid breathing 
vapors or spray mist. Remove and wash conta~linated clothing 
before reuse. Wash thoroughly before eating or smoking. 
Statement of Practical Treatment 
In case of contact wash skin with soap and water\ f~r eyes 
flush with water for at least 15 mi~utes and get medical 
attention. 
If swallowed, drink 1 or 2 glasses of water and induce 
vomiting by finger in back of throat. Never give anything 
by mouth to an unconscious person. Get medical attention. 
Environmental Hazards 
Do not apply directly to water except as specified on this 
label. 00 not contaminate water by cleaning of equipment 
or disposal of wastes. This product is toxic to fish. 
Avoid spray drift to susceptible plants such as cotton, 
beans, tomatoes, and ornamentals. (Coarse sprays .re less 
likely to drift). 00 not apply when weather conditions 
favor drift frnm treated areas. Avoic use of small 
diameter spray nozzles. At high ~ir or ground surface 
temperatures vapors from this prod~ct may injure 
susreptibl~ plants. 
00 not contaminate water used for irrigation or domestic 
purpose s. 
00 not USE the same spray equipment for other purp~se~ 
unless thoroughly cleaned. 
00 not use in or near a greenhouse. 
4 l087p 
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STORAGE AND DISPOSAL 
00 not store near fertilizers, seed, insecticides or 
fungicides. Do not contaminate water, food or feed by 
storage or disposal. Open dumping is prohibited. 00 not 
reuse empty container. 
Pesticide, spray mixture, or rinse water that cannot be 
used according to label instructions must be disposed of 
according to applicable Federal, state or local procedures 
under the Resource Conservation and Recovery Act. 
Triple rinse (or equivalent). Then offer for recycling or 
reconditioning, or dispose of in a sanitary landfill, or by 
incineration if allowed by state and local authorities. 
LIMITED WARRANTY AND DISCLAIMER 
The manufacturer warrants that this product conforms to 
the chemical description on the label, that this product is 
reasonably fit for the purposes set forth in the directions 
for use when it is used in accordance with such directions, 
and that the directions warnings and other statements on 
this label are based upon responsible experts evaluation of 
reasonable tests of effectiveness of toxir.ity to laboratory 
animals and to plants, and of residues on food crops, and 
upon reports of field experience. Tests have not been made 
on all varieties or in all states or under all conditions. 
THE MANUFACTURER NEITHER MAKES NOR INTENDS, NOR OOF.S IT 
AUTHORIZE ANY AGENT OR REPRESENI'ATlVE TO MAKE ANY OTHER 
WARRANTIES EXPRESS OR IMFLIED, AND IT EXPRESSLY EXCLUDES 
AND DISCLAIMS ALL IMPLIED WARRANTIES OF MERCHANTABILITY OR 
FITNESS FOR A PARTICULAR PURPOSE. 
This warranty does not extend to, and the Buyer shall be 
solely responsible for any and all loss or damage which 
results from the use of this product in any manner which is 
inconsistent with the label directions, warnings or 
cautions. 
BUYERS EXCLUS I VE REMEDY AtlO MANUFACTURER'S OR SELLER'S 
LIABILITY FOR ANY AND ALL CLAIMS, LOSSES, DAMAGES, OR 
INJURIES RESULTING FROM THE USE OR HANDLING OF THIS 
PRODUCT, WHETHER OR NOT BASED IN CONTRACT, NEGLlGEtlCE, 
STRICT LIABILITY IN TORT OR OTHERWISE, SHALL BE LIMITED. 
AT THE MANUFACTUPERS OPTION TO, THE REPLACEMENT OF OR THE 
REPAYMENT OF THE PURCHASE PRICE FOR THE QUANTITY OF PRODUCT 
WITH RESPECT TO WHICH DAMAGES ARE CLAIMED. IN NO EVEtH 
SHALL MANUFACTURER OR SELLER BE LIABLE FOR SPECIAL INDIRECT 
OR CONSEQUENTIAL DAMAGES RESULTING FROM THE USE OR HANDLING 
OF THIS PRODUCT. 
5 l087p 
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