DOCSLIB.ORG

Chemical Weed Control

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Chemical Weed Control 2014 North Carolina Agricultural Chemicals Manual The 2014 North Carolina Agricultural Chemicals Manual is published by the North Carolina Cooperative Extension Service, College of Agriculture and Life Sciences, N.C. State University, Raleigh, N.C. These recommendations apply only to North Carolina. They may not be appropriate for conditions in other states and may not comply with laws and regulations outside North Carolina. These recommendations are current as of November 2013. Individuals who use agricultural chemicals are responsible for ensuring that the intended use complies with current regulations and conforms to the product label. Be sure to obtain current information about usage regulations and examine a current product label before applying any chemical. For assistance, contact your county Cooperative Extension agent. The use of brand names and any mention or listing of commercial products or services in this document does not imply endorsement by the North Carolina Cooperative Extension Service nor discrimination against similar products or services not mentioned. VII — CHEMICAL WEED CONTROL 2014 North Carolina Agricultural Chemicals Manual VII — CHEMICAL WEED CONTROL Chemical Weed Control in Field Corn ...................................................................................................... 224 Weed Response to Preemergence Herbicides — Corn ........................................................................... 231 Weed Response to Postemergence Herbicides — Corn ......................................................................... 232 Chemical Weed Control in Cotton ............................................................................................................ 233 Weed Response to Preplant, Preemergence, and Postemergence Overtop Herbicides in Cotton ......... 242 Weed Response to Postemergence Directed Herbicides in Cotton ......................................................... 243 Weed Response to Burndown Herbicides for Conservation Tillage Cotton ............................................. 244 Chemical Weed Control in Peanuts.......................................................................................................... 245 Weed Response to Preplant Incorporated, Preemergence, and At-Cracking Herbicides in Peanuts ..... 250 Weed Response to Postemergence Herbicides in Peanuts .................................................................... 251 Chemical Weed Control in Sorghum ........................................................................................................ 252 Chemical Weed Control in Soybeans ....................................................................................................... 255 Weed Response to Preplant Incorporated and Preemergence Herbicides in Soybeans ....................... 264 Weed Response to Postemergence Herbicides in Soybeans .................................................................. 265 Chemical Weed Control in Sunflowers ..................................................................................................... 266 Chemical Weed Control in Tobacco ......................................................................................................... 267 Weed Response to Herbicides in Tobacco .............................................................................................. 269 Chemical Weed Control in Wheat, Barley, Oats, Rye, and Triticale ........................................................ 270 Weed Response to Herbicides in Small Grains ....................................................................................... 274 Glyphosate Formulations .......................................................................................................................... 275 Herbicide Resistance Management.......................................................................................................... 276 Herbicide Modes of Action for Hay Crops, Pastures, Lawns, and Turf .................................................... 280 Chemical Weed Control in Clary Sage ..................................................................................................... 283 Chemical Weed Control in Small Fruit Crops ........................................................................................... 284 Chemical Weed Control in Tree Fruit Crops ............................................................................................ 290 Chemical Weed Control in Hay Crops and Pastures ............................................................................... 297 Chemical Weed Control in Lawns and Turf .............................................................................................. 303 Chemical Weed Control in Ornamentals .................................................................................................. 318 Chemical Weed Control in Vegetable Crops ............................................................................................ 321 Chemical Weed Control in Forest Stands ................................................................................................ 347 Forest Site Preparation, Stand Conversion, Timber Stand Improvement ................................................ 349 Aquatic Weed Control ............................................................................................................................... 354 Biological Control of Aquatic Weeds with Triploid Grass Carp ................................................................ 356 Chemical Control of Aquatic Plants .......................................................................................................... 357 Pond Dyes ................................................................................................................................................ 361 Chemical Control of Specific Weeds ........................................................................................................ 363 Chemical Control of Woody Plants ........................................................................................................... 366 Total Vegetation Control in Noncropland ................................................................................................. 368 223 Chapter VII — Chemical Weed Control Chemical Weed Control in Field Corn W. J. EVERMAN, Crop Science Department NOTES: A mode of action code has been added to the Herbicide and Formulation column of this table. Use MOA codes for herbicide resistance management. See Table 7-10, Herbicide Resistance Management, for details. Control of witchweed is part of the State/Federal Quarantine Program. Contact the N.C. Department of Agriculture, Plant Industry Division, at 1-800-206-9333. TABLE 7-1A. CHEMICAL WEED CONTROL IN FIELD CORN Amount of Pounds Active Herbicide, Mode of Action Formulation Ingredient Per Code1 and Formulation Per Acre Acre Precautions and Remarks NO-TILL BURNDOWN, Emerged annual weeds, top-kill and suppression of perennials glyphosate, MOA 9 See label 0.38 to 1.13 (lb a.e.) Glyphosate is available as an isopropylamine salt and a potassium salt. Glyphosate formulations and (numerous brands and application rates should be compared on the basis of pounds of glyphosate acid equivalent (a.e.) per gallon formulations) and per acre, respectively. The rate in the preceeding column is expressed as a.e. See TABLE 7-10 for glyphosate rate conversions. Apply before crop emerges. Glyphosate rate depends upon weed species and weed size; see labels for suggested rates. See comments on labels concerning nitrogen as the carrier. Weed control may be decreased when nitrogen or other liquid fertilizers are used as carriers. Apply in 10 to 20 gal of water per acre using flat fan nozzles. For residual grass and broadleaf weed control, glyphosate can be tank mixed with most preemergence corn herbicides and herbicide combinations. See the section on Corn—Preemergence. Refer to specific product labels for application rates, weeds controlled, application directions, and precautions. Adjuvant recommendations vary according to the glyphosate product used. See label of brand used for specific recommendations. May tank mix glyphosate with Harmony SG at 0.45 to 0.9 oz per acre to improve control of curly dock, Carolina geranium, henbit, and wild garlic. Tank mix can be applied anytime prior to corn emergence. See Harmony SG label for details. May tank mix Resolve with glyphosate for improved control of Italian ryegrass and henbit. Glyphosate and the above glyphosate tank mixes will not control field pansy. A tank mix of Gramoxone plus atrazine should be used where field pansy is present. Glyphosate-resistant horseweed (marestail) is now common in eastern North Carolina counties. A tank mix of glyphosate or Gramoxone plus either 1.5 to 2 pt of 2,4-D or 0.5 pt of Clarity is suggested. Apply these tank mixes 7 to 14 days ahead of planting. If horseweed is present at planting time, a tank mix of Gramoxone plus atrazine is suggested. paraquat, MOA 22 0.5 to 1 (lb a.e.) Apply before, during, or after planting but before crop emerges using clean water or clear fertilizer solution (Gramoxone Inteon) 2 SL 2 to 4 pt as the carrier. Apply in a minimum of 10 GPA (20 to 40 preferred) using flat fan nozzles. Add either a (Firestorm) 3 SL 1.33 to 2.67 pt nonionic surfactant at 1 pt per 100 gal or a crop oil concentrate at 1 gal per 100 gal. Use 0.5 to 0.64 lb a.e. (Parazone) 3 SL 1.33 to 2.67 pt on weeds 1 to 3 in., 0.75 lb a.e. on weeds 3 to 6 in.,
Load more

Recommended publications
  • 2,4-Dichlorophenoxyacetic Acid
    2,4-Dichlorophenoxyacetic acid 2,4-Dichlorophenoxyacetic acid IUPAC (2,4-dichlorophenoxy)acetic acid name 2,4-D Other hedonal names trinoxol Identifiers CAS [94-75-7] number SMILES OC(COC1=CC=C(Cl)C=C1Cl)=O ChemSpider 1441 ID Properties Molecular C H Cl O formula 8 6 2 3 Molar mass 221.04 g mol−1 Appearance white to yellow powder Melting point 140.5 °C (413.5 K) Boiling 160 °C (0.4 mm Hg) point Solubility in 900 mg/L (25 °C) water Related compounds Related 2,4,5-T, Dichlorprop compounds Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) 2,4-Dichlorophenoxyacetic acid (2,4-D) is a common systemic herbicide used in the control of broadleaf weeds. It is the most widely used herbicide in the world, and the third most commonly used in North America.[1] 2,4-D is also an important synthetic auxin, often used in laboratories for plant research and as a supplement in plant cell culture media such as MS medium. History 2,4-D was developed during World War II by a British team at Rothamsted Experimental Station, under the leadership of Judah Hirsch Quastel, aiming to increase crop yields for a nation at war.[citation needed] When it was commercially released in 1946, it became the first successful selective herbicide and allowed for greatly enhanced weed control in wheat, maize (corn), rice, and similar cereal grass crop, because it only kills dicots, leaving behind monocots. Mechanism of herbicide action 2,4-D is a synthetic auxin, which is a class of plant growth regulators.
    [Show full text]
  • July 6, 2020 OPP Docket Environmental Protection Agency Docket Center (EPA/DC), (28221T) 1200 Pennsylvania Ave. NW Washington
    July 6, 2020 OPP Docket Environmental Protection Agency Docket Center (EPA/DC), (28221T) 1200 Pennsylvania Ave. NW Washington, DC 20460-000 Docket ID # EPA-HQ-OPP-2014-0167 Re. Clopyralid, Case Number 7212 Dear Madam/Sir: These comments are submitted on behalf of Beyond Pesticides, Beyond Toxics, Center for Food Safety, Hawai’i Alliance for Progressive Action, Hawai'i SEED, LEAD for Pollinators, Maine Organic Farmers and Gardeners Association, Maryland Pesticide Education Network, Northeast Organic Farming Association—Massachusetts Chapter, Northwest Center for Alternatives to Pesticides, People and Pollinators Action Network, Real Organic Project, Sierra Club, Toxic Free NC, Women’s Voices for the Earth. Founded in 1981 as a national, grassroots, membership organization that represents community-based organizations and a range of people seeking to bridge the interests of consumers, farmers and farmworkers, Beyond Pesticides advances improved protections from pesticides and alternative pest management strategies that reduce or eliminate a reliance on pesticides. Our membership and network span the 50 states and the world. EPA’s proposed interim decision (PID) on the weed killer clopyralid is inadequate to protect property, nontarget plants, and pollinators from exposure to the chemical. Clopyralid poses unreasonable adverse effects that cannot be remedied by EPA’s proposed fixes. It should not be reregistered. Clopyralid has a long history of causing environmental and property damage through drift, runoff, use of treated plant material (such as straw or grass clippings) for mulch or compost, contaminated irrigation water, and urine or manure from animals consuming treated vegetation. Clopyralid (3,6-dichloro-2-pyridinecarboxylic acid) is an herbicide used to control broadleaf weeds on nonresidential lawns and turf, range, pastures, right-of ways and on several crops.
    [Show full text]
  • Common and Chemical Names of Herbicides Approved by the WSSA
    Weed Science 2010 58:511–518 Common and Chemical Names of Herbicides Approved by the Weed Science Society of America Below is the complete list of all common and chemical of herbicides as approved by the International Organization names of herbicides approved by the Weed Science Society of for Standardization (ISO). A sponsor may submit a proposal America (WSSA) and updated as of September 1, 2010. for a common name directly to the WSSA Terminology Beginning in 1996, it has been published yearly in the last Committee. issue of Weed Science with Directions for Contributors to A herbicide common name is not synonymous with Weed Science. This list is published in lieu of the selections a commercial formulation of the same herbicide, and in printed previously on the back cover of Weed Science. Only many instances, is not synonymous with the active ingredient common and chemical names included in this complete of a commercial formulation as identified on the product list should be used in WSSA publications. In the absence of label. If the herbicide is a salt or simple ester of a parent a WSSA-approved common name, the industry code number compound, the WSSA common name applies to the parent as compiled by the Chemical Abstracts Service (CAS) with compound only. CAS systematic chemical name or the systematic chemical The chemical name used in this list is that preferred by the name alone may be used. The current approved list is also Chemical Abstracts Service (CAS) according to their system of available at our web site (www.wssa.net).
    [Show full text]
  • U.S. EPA, Pesticide Product Label, CLOPYRALID MEA+2,4-D, 07/07/2008
    'f-;) 7 S-O - 'ta- \ ENVIRONMENTAL PROTECTION u.s. EPA Reg, Nwnber: Date of Issuance: AGENCY Office of Pesticide Programs 42750-92 Registration Division (7505P) -- 7 JtJL 2DOB Ariel Rios, Building 1200 Pennsylvania Ave., NW Washington, D.C, 20460 NOTICE OF PESTICIDE: Term of Issuance: _ Registration -X Reregistration Name of Pesticide Product: (under FIFRA, as amended) Clopyralid MEA+ 2,4- D Name and Address of Registrant (include ZIP Code): Albaugh, Inc. 121 NE 18th Street Ankeny, IA 50021 N o~e: C.h~nge,~itiIflb~ljllgl,~i:t1~1i~~J9~~~1?~!iUiC~,fJqnf.th~i.:~G~~t~4j#'qqHriet£i~riw,ii4;tl}is, :' ',' ,,',: " registratio"n ~4stl>e ,s~Drriittedto,aPQjl,~9:~pt~qby 'theRe,gi~ttatipn pivisi()i1 prior t9 ':tI~.~"Qn~~)*~eI , ,~:~~~~r:::~.~:;~~:1~~jJ:r~,2t.edf.~,~.&.~~lt;'~I~\~i,~tfl%~~~i;m)~t~~:;'~~/~~·?~~:,)~·¥'t·.'~~~i,~j~:~:i)~.:,;" ,.".;,' "' On the basis of information furnished by the registrant, the above named pesticide is hereby registered/reregistered under the Federal Insecticide, Fungicide and Rodenticide Act. Registration is in no way to be construed as an endorsement or recommendation of this product by the Agency. In order to protect health and the environment, the Administrator, on his motion, may at any time suspend or cancel the registration of a pesticide in accordance with the Act. The acceptance of any name in connection with the registration of a product under this Act is not to be construed as giving the registrant a right to exclusive use of the name or to its use ifit has been covered by others. This product is reregistered in accordance with FIFRA sec.
    [Show full text]
  • Corn and Soybean Mode of Action Herbicide Chart
    By Premix Corn and Soybean This chart lists premix herbicides alphabetically by their trade names so you can identify the premix’s component herbicides and their respective site of action groups. Refer Herbicide Chart to the Mode of Action chart for more information. Component Repeated use of herbicides with the same Site of Premix Trade Active Action site of action can result in the development of Trade Name ® Name ® Ingredient Group* herbicide-resistant weed populations. Authority First ............... Spartan sulfentrazone 14 FirstRate cloransulam 2 Axiom ........................... Define flufenacet 15 This publication was designed for commercial printing, color shifts may occur on other printers and on-screeen. Sencor metribuzin 5 Basis . ........................... Resolve rimsulfuron 2 Harmony GT thifensulfuron 2 By Mode of Action (effect on plant growth) Bicep II Magnum .......... Dual II Magnum s-metolachlor 15 AAtrex atrazine 5 This chart groups herbicides by their modes of action to assist Bicep Lite II Magnum .... Dual II Magnum s-metolachlor 15 AAtrex atrazine 5 you in selecting herbicides 1) to maintain greater diversity in Boundary ...................... Dual Magnum s-metolachlor 15 herbicide use and 2) to rotate among herbicides with different Sencor metribuzin 5 Breakfree ATZ ............... Breakfree acetochlor 15 sites of action to delay the development of herbicide resistance. atrazine atrazine 5 Breakfree ATZ Lite ........ Breakfree acetochlor 15 Number of atrazine atrazine 5 resistant weed Buctril + Atrazine ......... Buctril bromoxynil 6 atrazine atrazine 5 species in U.S. Bullet ............................ Micro-Tech alachlor 15 Site of Chemical Active atrazine atrazine 5 Action Product Examples Camix ........................... Callisto mesotrione 28 Group* Site of Action Family Ingredient (Trade Name ®) Dual II Magnum s-metolachlor 15 Lipid Canopy DF ..................
    [Show full text]
  • Atrazine Active Ingredient Data Package April 1, 2015
    Active Ingredient Data Package ATRAZINE Version #5 (May 14, 2015) Long Island Pesticide Pollution Prevention Strategy Active Ingredient Assessment Bureau of Pest Management Pesticide Product Registration Section Contents 1.0 Active Ingredient General Information – Atrazine .................................................................... 3 1.1 Pesticide Type ........................................................................................................................... 3 1.2 Primary Pesticide Uses .............................................................................................................. 3 1.3 Registration History .................................................................................................................. 3 1.4 Environmental Fate Properties ................................................................................................. 3 1.5 Standards, Criteria, and Guidance ............................................................................................ 4 2.0 Active Ingredient Usage Information ........................................................................................ 5 2.1 Reported Use of Atrazine in New York State ............................................................................ 5 2.2 Overall Number and Type of Products Containing the Active Ingredient ................................ 7 2.3 Critical Need of Active Ingredient to Meet the Pest Management Need of Agriculture, Industry, Residents, Agencies, and Institutions ......................................................................
    [Show full text]
  • Herbicide Mode of Action Table High Resistance Risk
    Herbicide Mode of Action Table High resistance risk Chemical family Active constituent (first registered trade name) GROUP 1 Inhibition of acetyl co-enzyme A carboxylase (ACC’ase inhibitors) clodinafop (Topik®), cyhalofop (Agixa®*, Barnstorm®), diclofop (Cheetah® Gold* Decision®*, Hoegrass®), Aryloxyphenoxy- fenoxaprop (Cheetah®, Gold*, Wildcat®), fluazifop propionates (FOPs) (Fusilade®), haloxyfop (Verdict®), propaquizafop (Shogun®), quizalofop (Targa®) Cyclohexanediones (DIMs) butroxydim (Factor®*), clethodim (Select®), profoxydim (Aura®), sethoxydim (Cheetah® Gold*, Decision®*), tralkoxydim (Achieve®) Phenylpyrazoles (DENs) pinoxaden (Axial®) GROUP 2 Inhibition of acetolactate synthase (ALS inhibitors), acetohydroxyacid synthase (AHAS) Imidazolinones (IMIs) imazamox (Intervix®*, Raptor®), imazapic (Bobcat I-Maxx®*, Flame®, Midas®*, OnDuty®*), imazapyr (Arsenal Xpress®*, Intervix®*, Lightning®*, Midas®* OnDuty®*), imazethapyr (Lightning®*, Spinnaker®) Pyrimidinyl–thio- bispyribac (Nominee®), pyrithiobac (Staple®) benzoates Sulfonylureas (SUs) azimsulfuron (Gulliver®), bensulfuron (Londax®), chlorsulfuron (Glean®), ethoxysulfuron (Hero®), foramsulfuron (Tribute®), halosulfuron (Sempra®), iodosulfuron (Hussar®), mesosulfuron (Atlantis®), metsulfuron (Ally®, Harmony®* M, Stinger®*, Trounce®*, Ultimate Brushweed®* Herbicide), prosulfuron (Casper®*), rimsulfuron (Titus®), sulfometuron (Oust®, Eucmix Pre Plant®*, Trimac Plus®*), sulfosulfuron (Monza®), thifensulfuron (Harmony®* M), triasulfuron (Logran®, Logran® B-Power®*), tribenuron (Express®),
    [Show full text]
  • Greenhouse and Field Evaluation of Isoxaflutole for Weed Control In
    www.nature.com/scientificreports OPEN Greenhouse and field evaluation of isoxaflutole for weed control in maize in China Received: 27 June 2017 Ning Zhao, Lan Zuo, Wei Li, Wenlei Guo, Weitang Liu & Jinxin Wang Accepted: 18 September 2017 Greenhouse and field studies were conducted to provide a reference for pre-emergence (PRE) Published: xx xx xxxx application of isoxaflutole on maize in China. In greenhouse study, the isoxaflutole PRE application at 30 g active ingredient (a.i.) ha−1 could effectively control large numbers of weeds, especially some large-seeded broadleaves, tested in this study. The tolerance results indicated 21 maize hybrids showed different responses to isoxaflutole under greenhouse conditions. In 2015 and 2016, field experiments were conducted to determine and compare the weed control efficacy and safety to Zhengdan 958 maize with 6 herbicide treatments. In both years, isoxaflutole PRE at 100 to 250 g a.i. ha−1 was sufficient to provide satisfactory full-season control of the dominant common broadleaf and grass weeds in the field. Temporary injury to maize was observed with isoxaflutole treatments of 125, 150, and 250 g a.i. ha−1 in both years, but plants recovered within 4 to 6 wk. To maximize maize yield and provide satisfactory weed control, a range of 100 to 150 g a.i. ha−1 of isoxaflutole is recommended, depending on the soil characteristics, weather, and weed species present at the experimental site. Based on the results, isoxaflutole PRE has good potential for weed control in maize in China. Maize was planted on more hectares than any other crops in China from 2010 to 2014, with an average of 35 million ha planted per year and yield averaging 5,779 kg per ha per year1.
    [Show full text]
  • Acifluorfen Sorption, Degradation, and Mobility in a Mississippi Delta Soil
    Acifluorfen Sorption, Degradation, and Mobility in a Mississippi Delta Soil L. A. Gaston* and M. A. Locke ABSTRACT repulsion effects, acifluorfen is sorbed by soil or soil Potential surface water and groundwater contaminants include her- constituents (Pusino et al., 1991; Ruggiero et al., 1992; bicides that are applied postemergence. Although applied to the plant Pusino et al., 1993; Gennari et al., 1994b; NeÁgre et al., canopy, a portion of any application reaches the soil either directly 1995; Locke et al., 1997). Although the extent of sorp- or via subsequent foliar washoff. This study examined sorption, degra- tion in soil is generally proportional to OC content dation, and mobility of the postemergence herbicide acifluorfen (5-[2- (Gennari et al., 1994b; NeÁgre et al., 1995; Locke et al., chloro-4-(trifluoromethyl)phenoxy]-2-nitrobenzoic acid) in Dundee 1997), sorption likely involves processes other than par- silty clay loam (fine-silty, mixed, thermic, Aeric Ochraqualf) taken titioning between aqueous and organic matter phases. from conventional till (CT) and no-till (NT) field plots. Homogeneous In particular, acifluorfen forms complexes with divalent surface and subsurface samples were used in the sorption and degrada- tion studies; intact soil columns (30 cm long and 10 cm diam.) were and trivalent cations (Pusino et al., 1991; Pusino et al., used in the mobility study. Batch sorption isotherms were nonlinear 1993) that may be sorbed or precipitated. Complex for- (Freundlich model) and sorption paralleled organic C (OC) content. mation and subsequent sorption may partially account All tillage by depth combinations of soil exhibited a time-dependent for increased acifluorfen sorption with decreasing soil approach to sorption equilibrium that was well described by a two- pH or increasing cation exchange capacity (Pusino et site equilibrium±kinetic model.
    [Show full text]
  • Exposure to Herbicides in House Dust and Risk of Childhood Acute Lymphoblastic Leukemia
    Journal of Exposure Science and Environmental Epidemiology (2013) 23, 363–370 & 2013 Nature America, Inc. All rights reserved 1559-0631/13 www.nature.com/jes ORIGINAL ARTICLE Exposure to herbicides in house dust and risk of childhood acute lymphoblastic leukemia Catherine Metayer1, Joanne S. Colt2, Patricia A. Buffler1, Helen D. Reed3, Steve Selvin1, Vonda Crouse4 and Mary H. Ward2 We examine the association between exposure to herbicides and childhood acute lymphoblastic leukemia (ALL). Dust samples were collected from homes of 269 ALL cases and 333 healthy controls (o8 years of age at diagnosis/reference date and residing in same home since diagnosis/reference date) in California, using a high-volume surface sampler or household vacuum bags. Amounts of agricultural or professional herbicides (alachlor, metolachlor, bromoxynil, bromoxynil octanoate, pebulate, butylate, prometryn, simazine, ethalfluralin, and pendimethalin) and residential herbicides (cyanazine, trifluralin, 2-methyl-4- chlorophenoxyacetic acid (MCPA), mecoprop, 2,4-dichlorophenoxyacetic acid (2,4-D), chlorthal, and dicamba) were measured. Odds ratios (OR) and 95% confidence intervals (CI) were estimated by logistic regression. Models included the herbicide of interest, age, sex, race/ethnicity, household income, year and season of dust sampling, neighborhood type, and residence type. The risk of childhood ALL was associated with dust levels of chlorthal; compared to homes with no detections, ORs for the first, second, and third tertiles were 1.49 (95% CI: 0.82–2.72), 1.49 (95% CI: 0.83–2.67), and 1.57 (95% CI: 0.90–2.73), respectively (P-value for linear trend ¼ 0.05). The magnitude of this association appeared to be higher in the presence of alachlor.
    [Show full text]
  • Ecological Risk Assessment for Saflufenacil
    TEXT SEARCHABLE DCOUMENT 2011 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY WASHINGTON, D.C. 20460 OFFICE OF CEMICAL SAFETY AND POLLUTION PREVENTION PC Code: 118203 DP Barcode: 380638 and 381293 Thursday, April 07, 2011 MEMORANDUM SUBJECT: Ecological Risk Assessment for Saflufenacil Section 3 New Chemical Uses as a harvest aid on dry edible beans, dry peas, soybean, oilseeds "sunflower subgroup 20B", oilseeds "cotton subgroup 20C", and oilseeds canola "subgroup 20A". TO: Kathryn Montague, M.S., Product Manager 23 Herbicide Branch Registration Division (RD) (7505P) FROM: ~ Mohammed Ruhman, Ph.D., Agronomist 2 :4- . ""=- ........ 04!tJt! (I neith Sappington, Senior Biologist/Science Adviso~.... Vd- Environmental Risk Branch V O'f/ .../ II Environmental Fate and Effects Division (7507P) THROUGH: Mah Shamim, Ph.D., Branch Chief Environmental Risk Branch VI Environmental Fate and Effects Division (7507P) This ecological risk assessment for saflufenacil new uses is relying on the attached previous assessment (Attachment 1). As shown in the usage summary (Table 1), the single and seasonal rate, for all the crops range from 0.045 to 0.089 lbs a.i/A are within the range application rates used in exposure modeling for the 2009 Section 3 New Chemical Environmental Fate and Ecological Risk Assessment (DP Barcode 349855). Therefore, risk findings determined for the 2009 assessment may be used in the assessment for this submittal. Specifically, the 2009 assessment found no chronic risks to avian and mammalian species at an agricultural use rate 0 0.134 lb a.i.lA. Acute risks were not determined for birds and mammals since saflufenacil was not acutely toxic at the highest doses tested.
    [Show full text]
  • U.S. Geological Survey National Water-Quality Assessment Program
    U.S. Geological Survey National Water-Quality Assessment Program Stream water-quality analytes Major ions and trace elements­schedule 998 (20 constituents) Pesticides ­­schedule 2437 (229 compounds) Alkalinity 1H­1,2,4­Triazole Arsenic 2,3,3­Trichloro­2­propene­1­sulfonic acid (TCPSA) Boron 2,4­D Calcium 2­(1­Hydroxyethyl)­6­methylaniline Chloride 2­[(2­Ethyl­6­methylphenyl)amino]­1­propanol Fluoride 2­Amino­N­isopropylbenzamide Iron 2­Aminobenzimidazole Lithium 2­Chloro­2',6'­diethylacetanilide 2­Chloro­4,6­diamino­s­triazine {CAAT} Magnesium (Didealkylatrazine) pH 2­Chloro­4­isopropylamino­6­amino­s­triazine Potassium 2­Chloro­6­ethylamino­4­amino­s­triazine {CEAT} Total dissolved solids 2­Chloro­N­(2­ethyl­6­methylphenyl)acetamide Selenium 2­Hydroxy­4­isopropylamino­6­amino­s­triazine 2­Hydroxy­4­isopropylamino­6­ethylamino­s­triazin Silica e {OIET} Sodium 2­Hydroxy­6­ethylamino­4­amino­s­triazine Specific conductance 2­Isopropyl­6­methyl­4­pyrimidinol Strontium 3,4­Dichlorophenylurea Sulfate 3­Hydroxycarbofuran Turbidity 3­Phenoxybenzoic acid Vanadium 4­(Hydroxymethyl)pendimethalin 4­Chlorobenzylmethyl sulfoxide Suspended sediment 4­Hydroxy molinate 4­Hydroxychlorothalonil Nutrients­schedule 2430 (18 constituents) 4­Hydroxyhexazinone A Inorganic carbon, suspended Acephate Dissolved inorganic carbon Acetochlor ammonia + organic nitrogen (unfiltered­Kjeldahl) Acetochlor oxanilic acid ammonia + organic nitrogen (filtered­Kjeldahl) Acetochlor sulfonic acid Ammonia as N, filtered Acetochlor sulfynilacetic acid nitrite, filtered Alachlor
    [Show full text]