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Trinexapac-ethyl is a synthetic plant growth regulator that is derived from cyclohexanecarboxylate. Employees. The North American Industrial Classification System (NAICS) codes have been provided to assist you and others in determining whether this action might apply to certain entities. include documents scheduled for later issues, at the request EPA is setting different levels than were proposed based on EPA's analysis of the field trial data using the Organization for Economic Cooperation and Development tolerance calculation procedures. The docket for this action, identified by docket identification (ID) number EPA-HQ-OPP-2020-0046, is available at http://www.regulations.gov or at the Office of Pesticide Programs Regulatory Public Docket (OPP Docket) in the Environmental Protection Agency Docket Center (EPA/DC), West William Jefferson Clinton Bldg., Rm. While every effort has been made to ensure that Palisade is a giberellic acid inhibitor and works primarily by reducing plant height. Monks, T.G. Full disclosure: Syngenta donated the product for this trial, but the only funding for the research was provided by the Oklahoma Agricultural Experiment Station and the Oklahoma Cooperative Extension Service. The Public Inspection page may also No. The acute toxicity of trinexapac-ethyl is low via the oral, eye, dermal, or inhalation routes of exposure, and it is not a dermal sensitizer. While application of Palisade resulted in numeric reductions in plant height at Chickasha and Stillwater, differences among treatments were not statistically significant. This feature is not available for this document. Chemical Review Manager: Kelly Ballard (ballard.kelly@epa.gov), 703-305-8126. ), 2777 S. Crystal Dr., Arlington, VA. on trinexapac-ethyl Chemical family: Cyclohexanecarboxylate Formulation: EC (Emulsifiable Concentrate) Product Overview Registration Application Advice Emergency Links and downloads Product overview MODDUS contains trinexapac-ethyl for use as a growth regulator in wheat, barley, oats, rye, triticale, durum wheat and ryegrass seed crops. Combustible. 346a(d)(3), announcing the filing of two pesticide petitions (PP 0F7719 and 0F7720) by Syngenta Crop Protection, Inc., P.O. documents in the last year, 662 Use water spray, powder, foam, carbon dioxide. Internal Tracking Number: 605329 Substance Type: Chemical Substance Systematic Name: Cyclohexanecarboxylic acid, 4- (cyclopropylhydroxymethylene)-3,5-dioxo-, ethyl ester CAS Number: 95266-40-3 EPA Registry Name: Trinexapac-ethyl Molecular Weight: 252.27 Molecular Formula: C13H16O5 Additional Metadata Federal Register. Schedule for Beginning Reviews. Aggregate cancer risk for U.S. population. Thus, the Agency has determined that Executive Order 13132, entitled Federalism (64 FR 43255, August 10, 1999) and Executive Order 13175, entitled Consultation and Coordination with Indian Tribal Governments (65 FR 67249, November 9, 2000) do not apply to this action. Any trinexapac-ethyl that hits the soil is lost. Chronic oral toxicity studydog. include documents scheduled for later issues, at the request In the mouse, there was no evidence of carcinogenicity. documents in the last year, 87 Lodging occurs due to a variety of factors, and as shown in the figure below, the timing of lodging will determine the final impact on grain yield. In addition, this action does not impose any enforceable duty or contain any unfunded mandate as described under Title II of the Unfunded Mandates Reform Act (UMRA) (2 U.S.C. Therefore, short-term dermal post-application exposures and risks were also assessed for trinexapac-ethyl. [FR Doc. Only official editions of the L. 104-4). Use spark-proof tools and explosion-proof equipment. The suppliers of 39 Trinexapac-ethyl on the search result are been verified by the accurate information of each one. Gibberellin is a plant hormone that promotes growth of various plant organs. regulatory information on FederalRegister.gov with the objective of The experiment was arranged in a randomized block design in a factorial scheme, with three replications. to the courts under 44 U.S.C. Contact us today for pricing & size information. EPA considers the international maximum residue limits (MRLs) established by the Codex Alimentarius Commission (Codex), as required by FFDCA section 408(b)(4). Cumulative effects from substances with a common mechanism of toxicity. The information in this document is based on the present state of our knowledge and is applicable to the product with regard to appropriate safety precautions. I have served as an Assistant Professor and Small Grains Extension Specialist at Oklahoma State University since August 2019. Use the PDF linked in the document sidebar for the official electronic format. How can I get electronic access to other related information? We conducteda separate trial evaluating Palisade in drought stress environments that was partially funded by Syngenta. publication in the future. 02/28/2023, 205 Separated from food and feedstuffs. 02/28/2023, 239 About the Federal Register Many applications of trinexapac-ethyl are mixed with an iron-containing product to mask bronzing that may occur. EPA is revising the tolerance expression to include the free and conjugated forms of the parent (trinexapac-ethyl) and acid. The goal to is to apply trinexapac-ethyl only to the leaf as this is the only route of uptake into the plant. Aggregate Risk Assessment and Determination of Safety, D. Revisions to Petitioned-For Tolerances, VI. We as supplier shall not be held liable for any damage resulting from handling or from contact with the above product. These tools are designed to help you understand the official document Lose the iron and calcium. Use the PDF linked in the document sidebar for the official electronic format. Trinexapac-ethyl 4-()-3,5-4-(Cyclopropyl-alpha-hydroxymethylene)-3,5-dioxo-cyclohexanecarboxylic acid ethyl ester C13H16O5 252.27 FW252.27 36.0mp36.0>270bp>270pKa: 4.71.6mPa(20) 2.16mpa(25)(20g/L)2.8(pH 4.9)10.2(pH 5.5)21.1(pH 8.2)5% The Agency understands the commenter's concerns and recognizes that some individuals believe that pesticides should be banned completely. documents in the last year, 37 The Office of Management and Budget (OMB) has exempted these types of actions from review under Executive Order 12866, entitled Regulatory Planning and Review (58 FR 51735, October 4, 1993). endstream
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Pesticide Review Status. regulatory information on FederalRegister.gov with the objective of These setups such as with a boomless nozzle require higher actual product rates. . Section 408(b)(2)(C) of FFDCA provides that EPA shall apply an additional tenfold (10X) margin of safety for infants and children in the case of threshold effects to account for prenatal and postnatal toxicity and the completeness of the database on toxicity and exposure unless EPA determines based on reliable data that a different margin of safety will be safe for infants and children. Liquid formulations containing organic solvents may be flammable. Compliance with the tolerance levels specified below is to be determined by measuring both trinexapac-ethyl, ethyl 4-(cyclopropylhydroxymethylene)-3,5-dioxocyclohexanecarboxylate and the associated metabolite, trinexpac, 4-(cyclopropylhydroxymethylene)-3,5-dioxocyclohexanecarboxylic acid, calculated as the stoichiometric equivalent of trinexapac-ethyl, in or on the commodity. Substance Name: Trinexapac-ethyl [ISO] RN: 95266-40-3 UNII: Q89W563T9J InChIKey: RVKCCVTVZORVGD-QXMHVHEDSA-N. The Codex Alimentarius is a joint United Nations Food and Agriculture Organization/World Health Organization food standards program, and it is recognized as an international food safety standards-setting organization in trade agreements to which the United States is a party. If appropriate, moisten first to prevent dusting. Prevent fire caused by electrostatic discharge steam. Refer for medical attention . %PDF-1.6
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Formula: C 16 H 24 O 5 Si; Molecular weight: 324.4443; . If these high yield potential acres are being sprayed with a growth regulator at GS 7, the addition of a foliar fungicide might be prudent if it can be included at a relatively low cost. Do NOT wash away into sewer. EPA's aggregate exposure assessment incorporated this additional dietary exposure, as well as exposure in drinking water and from residential sources, although those latter exposures are not impacted by the modified use on sugarcane and thus have not changed since the last assessment. This final rule establishes tolerances under section 408(d) of FFDCA in response to petitions submitted to the Agency. documents in the last year, 1479 Residues were extracted from wheat with acetonitrile in aqueous phosphate buffer (pH 7) overnight. Pesticide manufacturing (NAICS code 32532). Any trinexapac-ethyl that hits the soil is lost. Based on these risk assessments, EPA concludes that there is a reasonable certainty that no harm will result to the general population, or to infants and children from aggregate exposure to trinexapac-ethyl residues. The plant growth regulator trinexapac-ethyl (TE) is widely used to increase seed yield by reducing lodging in many grass species, including perennial ryegrass (Lolium perenne L.) and tall fescue (Festuca arundinacea Schreb. Petition 0F7719 requested that 40 CFR part 180 be amended by establishing tolerances for residues of the plant growth regulator, trinexapac-ethyl and its primary metabolite CGA-179500, in or on grass, forage, grown for seed at 1.60 parts per million (ppm); grass, hay, grown for seed at 3.5 ppm; grass, seed screenings, grown for seed at 45.0 ppm; grass, straw, grown for seed at 12 ppm; cattle (fat, meat, meat byproducts) at 0.05 ppm; goat (fat, meat, meat byproducts) at 0.05 ppm; horse (fat, meat, meat byproducts) at 0.05 ppm and sheep (fat, meat, meat byproducts) at 0.05 ppm. Carefully collect remainder. Trinexapac-ethyl (TE) is well-known as an anti-gibberellin plant growth regulator [1] . informational resource until the Administrative Committee of the Federal It is used to control the growth on various grass species and crops. documents in the last year, 940 Bispyribac-sodium selectively controls annual bluegrass in cool-season turf but efficacy may be influenced by management practices, such as plant growth regulator use. This PDF is Our results are consistent with other wheat plant growth regulator research, which has reported similar variation in response among sites and years. Response to Syngenta's Rebuttal to Plant-back Interval Trinexapac-ethyl End Use Label (Palisade 2EC) and Acceptance Trinexapac-ethyl End Use Label (Palisade EC) and Acceptance Trinexapac-ethyl Technical Label and Letter of Acceptance. From non-dietary exposure. X. . In addition to filing an objection or hearing request with the Hearing Clerk as described in 40 CFR part 178, please submit a copy of the filing (excluding any Confidential Business Information (CBI)) for inclusion in the public docket. First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. Name: Trinexapac-ethyl: Trinexapac-ethyl; 4- (Cyclopropyl-alpha-hydroxymethylene)-3,5-dioxo-cyclohexanecarboxylic acid ethyl ester; Ethyl 4-cyclopropyl (hydroxy)methylene-3,5-dioxocyclohexanecarboxylate Registration Review. ChemSpider ID 83439. In 2014 application of Palisade or Palisade plus Tilt significantlyreduced plant height at Chickasha and Perkins. Molecular Formula CHO. That document referenced a summary of the petition prepared by Syngenta Crop Protection, LLC, the registrant, which is available in the docket, http://www.regulations.gov. Sign in to access your AXS Fan Account to manage your tickets. Enter your email address to follow this blog and receive notifications of new posts by email. EPA uses the term post-application to describe exposure to individuals that occur as a result of being in an environment that has been previously treated with a pesticide. The literature also shows that reduction in lodging is relative to the straw strength of the variety. Trinexapac-ethyl (TE), a GA synthesis inhibitor, is frequently used as a plant growth regulator in crop production. offers a preview of documents scheduled to appear in the next day's Also, the tolerance for sugarcane, molasses is established at a different level than requested to conform with EPA's rounding class practice by removing the trailing zero. documents in the last year, by the Employment and Training Administration - Double-bond stereo. For chronic dietary risk assessment, the water concentration of value 1.56 ppb was used to assess the contribution to drinking water. 02/28/2023, 43 The Codex has established an MRL for trinexapac-ethyl in or on sugarcane at 0.5 ppm. However, the existing legal framework provided by section 408 of FFDCA contemplates that tolerances greater than zero may be set when persons seeking such tolerances or exemptions have demonstrated that the pesticide meets the safety standard imposed by that statute. Therefore, apply trinexapac-ethyl in 20 to 30 gallons of water per acre. In terms of revenue, the global top. My best hypothesis is that the treated plots lodged later than the non treated plots, as all plots were standing at anthesis (see picture below). 601 et seq. Register, and does not replace the official print version or the official Call a poison control center or doctor for treatment advice If in eyes Hold eye open and rinse slowly and gently with water for 15-20 minutes. 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