A herbicide in a particular formulation and application can be described as selective or nonselective. Index for dithiopyr pc code 128994 pesticides us epa. Dithiopyr 2l herbicide dithiopyr 2l herbicide generic dimension ew herbicide from qualipro is a preemergent and postemergent herbicide for control of both grassy and broadleaf weeds in established turf and ornamentals. The following list provides an overview of pesticide chemicals evaluated for carcinogenic.
For additional information on toxicity from scientific journals or registration documents, see the additional resources for toxicity section of the chemical detail page 1. Evolution and use of risk assessment in the environmental. Revised reregistration eligibility decision for msma, dsma, cama, and cacodylic acid document from. The use of brand names in this publication does not imply endorsement by nc state university or n.
Epa redbook recommended conservation reserves 19761991. For control of listed annual grasses and broadleaf weeds in the. Dithiopyr inhibits root growth of susceptible weeds as well as turf grass and thus should be used only on established turf with a welldeveloped root system. Products containing dithiopyr hiyield weed and grass stopper with dimension herbicide dimension 2ew herbicide. The halflife of dithiopyr in soil was determined to be 444. Apr 12, 2006 the new enduse product, dimension 2ew. Information related to quality criteria for water red book. Products containing dithiopyr typically will carry instructions to keep the chemical away from water supplies and areas of runoff so as not to contaminate water. Davis state regulatory affairs manager agricultural chemicals. Dithiopyr l is both a preemergent and an early postemergent herbicide that targets crabgrass and provides preemergent control of broadleaf. Aquatic life benchmarks and ecological risk assessments. For additional information on toxicity from scientific journals or registration documents, see the additional resources for toxicity section of the chemical detail page.
Naphthalene also can cause red blood cell hemolysis. Dithiopyr l specialty herbicide preemergence and early postemergence herbicide for weed control in established lawns, commercial sod farms, noncropland and industrial sites, ornamental. In agriculture, selective herbicides are often used instead of tillage, or in combination with tillage and other agronomic practices, to control weeds without damaging crops. See epa s about pdf page to learn more quality criteria for water, 1976 red book pdf 533 pp, 16 mb. Pesticide fact sheet number 223dithiopyr microform epa. Information related to quality criteria for water gold book. It is usually persistent in both soil and aquatic systems. Indicates high toxicity in the given toxicological category. Dithiopyr 40 wsb herbicide generic dimension ultra wsp. A 1992 guidance memorandum reinforces principles enunciated in the 1983 red book and in epas 1986 riskassessment guidelines and was a forerunner of. As an herbicide it is considered preemergent meaning that it is only effective if applied before the target weeds emerge. Dithiopyr 40 wsb is a watersoluble herbicide that can be used as an early postemergent control crabgrass and preemergent control of over 40 grassy and broadleaf weeds in established lawns, golf courses, fieldgrown nurseries, landscape ornamentals and more. These products are available in a wide range of formulations and loaded on a wide range of fertilizers, including generic.
Long term ratings indicate whether the active ingredient is on the california prop 65 list, which indicates if materials are known to cause cancer or reproductive toxicity, or whether the us epa has classified the pesticide as likely to be carcinogenic to humans, group bprobably human carcinogen, or group cpossible human carcinogen. Dimension 2 ew and dithiopyr 2l are among the top dithiopyr herbicides. When epa completes a risk assessment on a pesticide, a variety of toxicity information. Dithiopyr technical is a tan solid with a sulfurlike odor that is formulated into liquid, powder, and granular herbicide formulations. These findings indicate that photodegradation in water could contribute significantly to the overall degradation of dithiopyr in the environment. Conversely, dithiopyr applied pre allowed a maximum of 5% coverage by the end of the experiments. Rationale for us epa to add dithiopyr to the toxic release inventory. This chemical is a pesticide product registered by the environmental protection agency and is subject. Buy high purity dithiopyr analytical standards from chem service inc. To view the complete list of companies, product names and percent dithiopyr in. Potential exposure to dithiopyr may occur through the drinking water, when handling and applying the product or when entering treated areas such as residential turf and golf courses.
Dithiopyr rh 1664 recoverv values for soil fortified at 0. See active ingredients, product application, restrictions, and more. This data set represents data capture as at october 2010. Dithiopyr is a preemergent herbicide for crabgrass control in turf and ornamental grasses. Progress in pesticide risk assessment and phasingout of highly. View the product label for dithiopyr 40 wsb from qualipro. Epa 032007notif 091108 14302 trans 010410rev c dithiopyr 40 wsb specialty herbicide for control of listed annual grasses and broadleaf weeds in the following sites.
Its low mix rate and nonstaining formulation make it a great alternative to prodiamine. Health effects of 30 commonly used pesticides beyond pesticides. Based on the data dithiopyr is classified as photostable in or on soil. Dithiopyr 40 wsb is the generic version of dimension ultra 40 wsb for early postemergent control of crabgrass and preemergent control of over 40 grassy and broadleaf weeds in established lawns, golf courses, fieldgrown nurseries, landscape ornamentals and more 4 x 5 oz. Dithiopyr is unlikely to affect your health when used according to the revised label directions. Dithiopyr is a preemergent herbicide without eu regulatory approval for use. Applicators and other handlers who handle this product for any use covered by the worker protection standard 40 cfr part 170 in general, agricultural plant uses are covered must wear. Indicates no available weightoftheevidence summary assessment. Registration of dithiopyr dimension turf herbicide. Dithiopyr 40 wsb pre emergent herbicide solutions pest. View the product label for dithiopyr 2l from qualipro. The red book provides text discussion with reference to specific legal authorities to illustrate legal principles, their application, and exceptions.
Ministry of agriculture fisheries and food reference book no. Dithiopyr is a pre emergent herbicide for control of grasses and small seeded broad leaf weeds. This analytical method determines residues of the three major carboxylic acid metabolites of mon 15100 in soil. The pharmacology of silver reached the same conclusion, that a total accumulative i. Dithiopyr absorbs at wavelengths 290 nm3 and, therefore, may be susceptible to direct photolysis by sunlightsrc.
Herbicide epa registration no 53883311 chemical name of active ingredients. Safety data sheet qualipro dithiopyr 2 l page 1 of 6 1. Epa a a1 tical results ecmo167s 1 s4 september 14,2000 page 4 of 28 1. Us epa pesticides reregistration eligibility decision. The active ingredient in this product is dithiopyr 91% a. Dithiopyr, the active ingredient in this product, is a group 3 herbicide. Dithiopyr dissipation in the soil environment occurs mostly through a combination of volatilization and biodegradation4,8. Dithiopyr analytical standards 97886458, n11822100mg. Revised reregistration eligibility decision for msma.
Systems 1 5, 8 and 9 remain as originally captured by ngis. Principles of federal appropriations law, also known as the red book, is gaos multivolume treatise concerning federal fiscal law. Dithiopyr, pendimethalin, and prodiamine consider alternating active ingredients every two to three years to further reduce the possibility of forming resistant populations. These products are available in a wide range of formulations and loaded on a wide range of fertilizers, including generic and proprietary products. Comments and suggestions received during the public consultation period are being considered in the finalization of this document. If a red has been signed, it means that the active ingredient is eligible for. See the product label for all the listed annual grasses. You may need a pdf reader to view some of the files on this page. Top three mistakes to avoid when applying preemergent herbicide. Dithiopyr is an active ingredient that acts as a preemergent herbicide. If you do not understand the label, find someone to explain it to you in detail. Dithiopyr was found to degrade much faster in nonsterile media versus sterile media8. Adams senior registration specialist monsanto company 800 n.
The epa redbook recommended conservation reserves contains the boundaries of areas recommended for conservation by the environmental protection authority epa of western australia, as set out in a series of maps and text in the publication red book status report 1993 on the implementation of conservation reserves for western australia. Getting ready for the spring and summer seasons is a big jobespecially if you want to avoid killing and pulling weeds all summer long. Dithiopyr is the active ingredient found in the popular herbibcide dimension, among others. It is commonly used for crabgrass prevention and applied before the crabgrass starts to sprout. Jun 03, 20 dithiopyr is a pre emergent herbicide that will prevent grassy weeds from coming up in established turf grasses and lawns. Quality criteria for water, 1986 gold book pdf 395 pp, 14 mb contact us to ask a question, provide feedback, or report a problem. It has a low aqueous solubility and, based on its chemical properties, is not expected to leach to groundwater. Applying a preemergent herbicide in the spring is a good way to get ahead of the game, but beware of mistakes that might cause problems down the line. In support of this request, the registrant has submitted a basic confidential statement.
The list of 30 commonly used lawn chemicals is based on information provided by the. Reregistrafion eligibility decisions reds, interim reds ireds, and red factsheets. Other important grasses include kikuyugrass, goosegrass, chickweed, annual bluegrass, barnyard grass, oxalis, ryegrass, spurge. A notice of availability for this reregistration eligibility decision red for oxadiazon is published in the federal register. Dithiopyr definition of dithiopyr by medical dictionary. Top three mistakes to avoid when applying preemergent. This notification is consistent with the guidance in pr notice 20074 and the requirements of epa s regulations.
Chemicals evaluated for carcinogenic potential annual. Environmental protection agency one potomac yard 2777 s. For weed control in bermudagrass seedlings, quinclorac is safe on bermudagrass seedlings at 0 wae or later, and dithiopyr is safe when applied 1 wae or later. To obtain a copy of the red document, please contact the opp public regulatory docket 7502c, us epa, ariel rios building, 1200 pennsylvania avenue nw, washington, dc 20460, telephone 703 3055805.
Epa 032007 625105 notif 091108rev a dithiopyr 40 wsb specialty herbicide for control of listed annual grasses and broadleaf weeds in the following sites. Consumer product safety consultation document on dithiopyr proposed reevaluation decision prvd200901 notice to the reader. Detail update information on the list relating to a. Dithiopyr c15h16f5no2s2 cid 91757 structure, chemical names. Dimension dithiopyr nc state extension publications. Why lawn care pesticides are dangerous to your children, pets. Dithiopyr 40 wsb is an excellent herbicide for preemergent control of crabgrass. Proposed reevaluation decision dithiopyr prvd200901. Compare dithiopyr 40wsb herbicide to dimension ultra 40 wp, both contain dithiopyr 40. Dithiopyr 40 wsb pre emergent herbicide will last for up to 1 to 2 years when stored according to the product label. Epas office of pesticide programs opp and epas office of water ow have. Davis state regulatory affairs manager agricultural.
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