crop-chem-docs/corpus/epa_ppls/264-376.md

# CERONE-2 PLANT REGULATOR

- EPA Reg No: **264-376**
- Registrant: BAYER CROPSCIENCE, LLC
- Signal word: Warning
- Active ingredients: Ethephon (21.7%)
- Label accepted: 1994-04-20
- Source PDF: https://www3.epa.gov/pesticides/chem_search/ppls/000264-00376-19940420.pdf

---
Warren A. Davis 
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY 
WASHINGTON, D.C. 20460 
APR 201994 
RHONE-POULENC AG COMPANY 
2 T. W. ALEXANDER DRIVE 
Research Triangle Park, NC 27709 
OFFICE OF 
PREVENTION. PESTICIOCS A:-ID 
TOXIC SUBSTANCES 
Subject: Label Amendment Submission of 06/28/93 in Response to PR Notice 93-7 
EPA Reg. No. 264-376 
CERONE-2 PLANT REGULATOR 
Dear Registrant: 
The labeling cited above and submitted in connection with registration under the 
Federal Insecticide, Fungicide, and Rodenticide Act (F1FRA), as amended, is accepted 
subject to the comments reflected on the enclosed sheet. A copy of your proposed labeling 
stamped • ACCEPTED WITH COMMENTS· is enclosed. 
WHAT THIS ACCEPTANCE MEANS: 
Based on your certification, the Agency has accepted the labeling changes that are 
necessary to comply with the Worker Protection Standard (WPS) labeling requirements of 
40 CFR par! 156, subpart K, described in PR Notices 93-7 and 93-11. Any other labeling 
changes submitted in connection with this amendment application but not directly related 
to c.ompliance with the WPS have not been reviewed or accepted by the Agency. If you 
wish to make such changes, you must submit a separate amendment application proposing 
them. If your product is currently suspended, the acceptance of this labeling amendment 
does not affect the suspension in any way. 
WHAT YOU NEED TO DO NEXT: 
By the next label printing make all the sptcified changes to your labeling. Send to 
EPA one (1) copy of the final printed labeling: 
• BEFORE selling or distributing any produc! bearing the final printed labeling 
AND 
• WITHIN one year from date of this acceprance.

Page 2 
Submit the final printed labeling via the U.S. Postal Service to: 
Document Processing Desk (FIN-LABJ:L) 
Office of Pesticide Programs (7505C) 
U.S. Environmental Protection Agency 
401 M Street, SW 
Washington, D.C. 20460-0001 
Hand or courier deliveries of final printed labeling may be made to: 
Attachment 
Document Processing Desk (FIN-LABEL) 
Office of Pesticide Programs 
Room 266A, Crystal Mall 2 
1921 Jefferson Davis Highway 
Arlington, V A 22202 
Sincerely, 
s, Deputy Chief 
Support Branch 
Division (7505W)

CERONE® -2 Plant Regulator 
For Reducing Lodging in Barley and Wheat 
For Agricultural or Commercial Use Only. Not For Residential Use. 
ACO;1'1l:IJ 
wi.h COIIIIIIEl'oTS 
II! tWA 1A",tlcor U.a.rd 
ACTIVE INGREDIENT: Ethephon [(2-chloroethyl) phosphonic acid)· ...................................................................... 21,7% 
INERT INGREDIENTS: .............................................................................................................................................. 78,3% 
'Contains 2 pounds ethephon per gallon 
EPA Rea. No. 264-376 EPA EST NO. 264-PA-G1 
KEEP OUT OF REACH OF CHILDREN 
WARNING AVISO 
Si usted no entiende la etique!a, busque a alguien para que 58 la explique a usted en detalle. 
(H you do not understand the label, find someone to explain k to you in detail.) 
For EMERGENCY INFORMATION ONLY call 24 Hours A Day 1-800-521-8235 
For PRODUCT HANpLlNG. USE ANP GENERAL INFORMATION call 1-800-334-9745 
The use of this product for a variety of pla:lt growth regulation uses is covered by United States and foreign patents including 
U.S. Patents 3,879.188 and 4,240,819. No license is granted to use this product in countries other than thll Un~ed States or for any 
use not contemplated by this label. liabil~y for patent infringement rnay result from use or sale of this product outside the United 
States. 
PRECAUTIONARY STATEMENTS 
WARNING 
HAZARDS TO HUMANS AND DOMESTIC ANIMALS 
Harmful H swallowed. May cause eye damage. Avoid contact with skin or clothing and do not inhale vapors as this product will irritate 
skin and mucous membranes. 
PERSONAL PROTECTIVE EQUIPMENT (PPE) 
Applicators and other handlers must wear long-sleeved shirt and long pants. waterproof gloves, shoes plus socks and protective 
eyewear. 
Discard clothing and other absorbed materials that have been drenched or heavily contaminated with this products concentrate. Do not 
reuse them. Follow marufac'.urer's instructions for cleaning/maintaining PPE. H 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 manne' that meets the requirements ~sted in the Worker Protection 
Standard (WPS) for agricultural pesticides [40 CFR 170.240 (d) (4-6)], the handler PPE requirements may be reduced or mod~ied as 
specified in the WPS. 
User Safety Recommendations 
Users should wash hands before eating, drinking, chewing gum, using tobacco or using the toilet. 
Remove clothino immediatelv W DGsticide oets inside. Then wash body thoroughly and pUt on clean clothino. 
STATEMENT OF PRACTICAL TREATMENT 
In case of splashing into eyes, flood eyes immediately with plenty of water for at least 15 minutes and get medical a"ention. 
In case of skin contact. wash immediately with plenty of soap and water and remove contaminated clothing. Avoid contamination of 
food. "taken internally. call a physician and promptly drink large quantities of milk, egg white, gelatin solution or if these are not 
available, large quantities of water. 
NOTE TO PHYSICIAN 
This material possesses the characteristics of a strong acid, and may cause mucosal damage by swallowing. Do not induce vomiting. 
Gastric lavage should be undertaken with care if necessary. Appropriate conventional treatment for circulatory shock, respiratory 
depression and convulsions may be needed.

ENVIRONMENTAL HAZARDS 
Do not apply CERONE--2 Plant Regulator through any type of irrigation system. 
Do not contaminate water used for irrigation or domestic purposes. 
For terrestrial uses, 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. 
Avoid spray drill to nearby crops as this product wPI cause modifications in plant gro .. 1h. Plant injury or reduced yields will result. Dc 
not exceed the rate of CERONEe-2 Plant Regulator per acre per year recommended (,n this label. Do not ptant another crop w~hin 30 
days after treatment. 
IfIPORTANT: 
[10 not use this product for purposes 'tllar than those listed on the label. 
IAix only the amount of spray you expect to use each day. Do not allow mixed solution to stand overnight. 
GENERAL INFORMATION 
CERONE--2 Plant Regulator is intended to be used only as an antilodging agent on int&nsively managed barley and wheat crops that 
are likely to lodge. 
Vigorously growing small grain cereal crops in fertile soils are likely to lodge. Lodging often decreases recoverable grain yields, and 
increases harvesting costs. Lodging also contributes to uneven maturhy, higher moisture content, loss of grain quality due to sprouting 
and possible molding. 
CERONEs-2 Plant Regulator reduces the ptant height and increases the straw strength, thus providing greater resistance to lodging. A 
standing crop would allow for more efficient harvesting and improved grain recovery. CERONE--2 Plant Regulator also reduces 
"necking" in barley and the resultant yield decrease due to ear loss prior to harvest. 
IMPORTANT NOTES 
Management practices aimed at maximizing grain yields can product condhions conducive to disease development. 
If rust, septoria, or mildew disease infestations are present, CERONE--2 Plant Regulator treatment may enhance the severity of the 
disease. 
Growers planning to use CERONE--2 Plant Regulator should plant disease-resistant varieties or monitor their crop for disease and use 
effective fungicides. 
Do not apply CERONE--2 Plant Regulator to crops already lodged, severely infected with rust or other diseases. or damaged by 
insects. 
Do not apply CERONE--2 Plant Regulator to crops under severe moisture stress. 
Do not add surfactants or wetting agents to CERONEs-2 Plant Regulator other than those recommended on this label. 
Do not apply CERONE--2 Plant Regula:or ~ rain is expected within 5 hours. 
CERONEs-2 Plant Regulator treatment provides greater resistance to lodging and therefore higher than normal rates ot supplemental 
nhrogen can be considered. Consu~ local extension services for fertilizer recommendations. 
I=or CERONE--2 Plant Regulator to be effective, the average daytime temperature following application should reach at least 60· F. ~ 
requires at least 7 days for CERONE--2 Plant Regulator to provide adequate lodging protection. 
CERONE--2 Plant Regulator treatment may produce undesirable secondary tillers in some spring barley varieties especially under 
moisture stress. Treatment is not recommended for Azure barley. 
CERONE--2 Plant Regulator should on: be used in vigorously growing grain crops that are likely to lodge and which have maximum 
yield potential. Do not apply CERONE -2 Plant Regulator to crops grown under low fertilhy conditions, or seeded later than locally 
recommended. 
Dwarf or semi-dwarf wheat varieties with known good standability should not be treated whh CERONEs-2 Plant Regulator. 
DO NOT GRAZE OR FORAGE TAEA TED CROP OR CUT FOR HAY OR SILAGE. 
Do not herveet barley or wheat treated with CERONE-·2 Plent Regutetor 8OOn.r than 40 daye efter the last appllcatlon_ 
COMPAnBIUTY 
CERONE--2 Plant Regulator can be tank-mixed whh most of the fungicides currently registered for wheat and barley. The addition of 
Trhon CS-7 to Uancozeb wettable powder fungicide can be used in UN, NO and SO. Consult your local Rh6ne-Poulenc field 
representative for specific recommendations.

DIRECTIONS FOR USE 
It Ia a violation of Fad.ral Law to u .. thla product In a mann.r Inconslatent with Ita labeling. 
Read .... tlr. label before using this product. 
Barley and Wheat - Apply 1.0 to 2.0 pints CERONE"·2 Plant Regulator in 3 to 25 iallons water per acre by air or ground equipment. 
Whh low volume controlled droplet ground equipment, use a lower rate of CERONE ·2 Plant Regulator. Use the higher rate (2.0 pints) 
for extremely vigorous aops. Apply between early boot to late boot stages, but before the awns or spikes have begun to emerge. The 
spike or head should never be exposed to spray solution. 
Make only one application per growing season and do not exceed a maximum rate of 2.0 pints. 
Do not apply this product in a way that wUI contact workers or other persons, either directly or through drift. Only protected handlers 
may be in the area during application. For any requirements specHic to your State or Tribe, consult the agency respor>sible for pesticide 
regulations. 
AGRICULTURAL USE REQUIREMENTS 
Use this product only In aa:ordance whh he labeling and w~h the Worker Protection Standard, 40 CFR part 170. This standard contains 
requirements for the protection of agricultural workers on farms, forests, nurseries, and greenhouses, and handlers of agricultural 
pesticides. It contains requirements for training, decontamination, notHication, and emergency assistance. It also contains specHic 
instructions and expectations tMlrtaining to the statements on this label about personal protective equipment (PPE) and restricted·entry 
intervals. 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 48 hours. 
PPE required for early entry to treated areas that is permhted under the Worker Protection Standard and that involves contact with 
anything that has been treated such as plants, soil or water is coveralls, waterproof gloves, shoes plus socks and protective eyewear. 
Notify workers of the application by warnillQ them orallY and by DOstina warning signs at entrances to treated areas. 
See the illustration below for growth stages and proper time for CERONE"·2 Plant Regulator application. 
GROWTH 1st node 2nd node Flag leal Flag leaf 1 st spildet 
DESCRIPTION detectable detectable iust visible ligule visible Boot swollen visible 
Feekes - Large 
Scale 6 7 8 9 10 10.1 
•.•...•.•• RECOMMENDED TREATMENT TIME •..•.•.••.

STORAGE AND DISPOSAL 
not contaminate water, food, or feed by storage or disposal. 
DISPOSAL 
I Wast'ls resulting from the use of this product may be disposed on s~e or at an approved waste disposal facil~. 
I CClINTJ"NI,R DISPOSAL 
IIqLfivaienl'. Then after for recyc~ng or recond~ioning or puncture and dispose of in a san~ary landfill, or by incineration, 
out of 
LIMITED WARRANTY AND DISCLAIMER 
The manufacturer warrants (a) that this product conforms to the chemical description on the label; (b) that this product is reasonably f~ 
for the purposes set forth in the direction for use when ~ is used in accordance w~h such diractions; and (c) that the directions, warnings 
and other statements on this label are based upon responsible experts' evaluation of reasonable tests of effectiveness, of toxic~y 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 IIHENDS, NOR OOES IT 
AUTHORIZE ANY AGENT OR REPRESENTATIVE TO MAKE, ANY OTHER WARRANTIES, EXPRESS OR IMPLIED, AND IT 
EXPRESSLY EXCLUDES AND DISCLAIMS ALL IMPLIED WARRANTIES OF MERCHANT-ABILITY 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. 
BUYER'S EXCLUSIVE REMEDY AND MANUFACTURER'S OR SELLER'S EXCLUSIVE 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, NEGLIGENCE, STAICT LIABILITY IN TORT OR OTHERWISE SHALL BE LIMITED, AT THE 
MANUFACTURER'S OPTION, TO REPLACEMENT OF, OR THE REPAYMENT OF THE PURCHASE PRICE FOR, THE QUANTITY 
OF PRODUCT WITH RESPECT TO WHICH DAMAGES ARE CLAIMED. IN NO EVENT SHALL MANUFACTURER OR SELLER BE 
LIABLE FOR SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES RESULTING FROM THE USE OR HANDLING OF THIS 
PRODUCT. 
NOnCE TO BUYER 
Purchase of this material does not confer any rights under palents governing this product or the use thereof in countries outside of the 
United States. 
RhOne-Poulenc A9 Company 
P.O. Box 12014, 2 T.W. Alexander Drive 
Research Triangle Park, North Carolina 27709 
CERONE is a registered trademark of RHONE-POULENC. 
CERONEe-2 Plant Regulator (PENDING) Submitted -'_193.