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WEED SCIENCE SOCIETY OFAMERICAWESTERN SOCIETY OF WEEDSCIENCEJOINT MEETING60th Meeting2020 MEETING PROGRAMHyatt RegencyMaui, HIMarch 2-5, 2020
WSSA Sustaining MembersPRESIDENTIALBASF CorporationBayer Crop ScienceCorteva AgrisciencesFMC CorporationSyngenta Crop ProtectionLEADERSHelena ChemicalValent USAWinfield UnitedPATRONSNuFarm Americas, Inc.UPL NA IncGrowmark, Inc.Gylling Data Management, Inc.Marrone Bio Innovations, Inc.CONTRIBUTORSAMVAC Chemical CorpGreenleaf TechnologiesTeeJet TechnologiesNippon Soda LtdOxiteno USAClariant CorporationLehigh Agri & Bio Services, Inc.Minnesota Valley Testing LabR & D SprayersSePRO
60th MeetingWeed Science Society of America/Western Society of Weed ScienceLocal Arrangements Committee .1The 2020 Program . 22020 Program Committee .4WSSA Committee Meetings .5Summary of 2020 Program .9Complete Program . 13Meeting Room Maps . 113Author Index . 114WSSA Board of Directors . 145WSWS Officers and Executive Committee . 146Meeting Conduct . 147Personal Time Schedule. 150Notes. 151WSSA Sustaining Members. Inside Back CoverLocal Arrangements Committee 2020 –MauiChair .James Leary
The WSSA/WSWS 2020 ProgramWelcome to the 2020 joint Weed Science Society of America(WSSA) and the Western Society of Weed Science (WSWS)Annual Meeting at the Hyatt Regency Maui Resort and Spa. Thisvenue is set upon 40 oceanfront acres on Maui’s Ka’anapali Beachoffering many activities. Organized tour options include whalewatching and a tour of Monsanto Hawaii seed corn operation.At this year’s meeting, we are encouraging a more resort casualdress code; tropical/Hawaiian attire would be great! Mostcommittee meetings will take place on Monday, March 2 in themorning or afternoon with some scattered on other days duringthe week. Check with your committee chairs for the exact timeand location. The General Session and WSSA/WSWS AwardsCeremony will begin Monday at 4:00 PM in the MonarchyBallroom. Our General Session will begin with a welcome andopening remarks from Dr. Samuel M. ʻOhukaniʻōhiʻa Gon III,senior scientist and cultural advisor for the Nature Conservancyof Hawaii. Dr. Sam Gon is a native of Hawaii and has 40 yearsof experience in numerous conservation and land managementprojects. We are excited to have Dr. Gon join our meeting.Presidents Larry Steckel (WSSA) and Pat Clay (WSWS) willcollaborate on the presidential address to the membership. TheAwards Ceremony will include presentations of the WSSA andWSWS Annual Awards. Be sure to attend this session to helprecognize all the awardees. Following the Awards Ceremony,WSSA/WSWS will host an awards reception beginning around6:00 p.m. All registered attendees are welcome and encouragedto attend. Please be sure spouses and friends that accompany youhave registered so that they may attend this fun event.As in the past, we will begin Tuesday morning with the PosterSession and will again have multiple breakout sessionsthroughout the week with presentations addressing invasiveplants in natural areas to the genetics of herbicide resistance tothe latest herbicide technology. We think we have something foreveryone. Also, join us for the 3rd WSSA Women in WeedScience Networking Event tentatively targeted for Tuesday atnoon. All female attendees at the conference are welcome toattend the event, just sign up when you register so we have a seatfor you!We are again conducting MS and PhD student poster and oralpresentation contests. However, a new oral competition event isbeing offered in 2020 to both WSSA and WSWS students. Thiswill be a Three-Minute Thesis Research CommunicationCompetition (3MT ) developed by the University ofQueensland, Australia (https://threeminutethesis.uq.edu.au/). Itprovides students with the opportunity to profile their researchand enhance communication skills. A separate document will beavailable describing this activity in more detail including howstudents will be judged and the rules for the competition. A jointWSSA/WSWS student luncheon will take place on Wednesday2
where the students will conduct business and have a facilitatedsession focused on some issues that students face in graduateschool. And finally, the student awards ceremony will takeplace late Wednesday afternoon followed by an organized“Students Night Out”, so there should be plenty of opportunitiesfor our students to contribute in the 2020 meeting.Tuesday through Thursday, we are going to host five symposiarelated to important and impactful subjects that need attention inWeed Science. These include: 1) Genomics of Weedy andInvasive Species - 2025 and Beyond, 2) The Ecological andBiodiversity Impact of Invasive Grass Species and TheirManagement, 3) 2020 Vision for Hawaiian Invasive PlantManagement, 4) The Role of Intelligent Machines in WeedManagement, and 5) Toxicology and Weed Science. The WSSAa n d W S W S w i l l b o t h h o s t s e p a r a t e business meetingsearly Thursday morning. We hope that all members will attendtheir respective meeting to participate in the decision-makingprocess on societal issues and board activities. Most professionalactivities will end by noon on Thursday, however a very specialworkshop titled “Building a Community to the Wicked Problemof Herbicide Resistance” organized by Dr. David Shaw will takeplace from 1 to 4 pm on Thursday where experts and practitionerswill present information on community organization efforts andother strategies to combat the resistance problem. Also, othercommittee meetings may run into Thursday afternoon, so checkthe schedule.Special thanks to our Local Arrangements Chair, Dr. James Leary.Although he relocated to Florida from Hawaii last year, he hasbeen very helpful with developing the program. In addition, thanksto Josh Atwood with the Hawaii invasive Species Council inhelping to identify our Keynote speaker. We would also like tothank Drs. Darrin Dodds, Marty Schraer, and Carl Coburn fortheir help in organizing and conducting the student contests.Thanks also to Drs. Larry Steckel, Anita Dille, Scott Senseman,Pat Clay, and Andrew Kniss for their help and guidance inpreparing the program. We had an overwhelming group ofcommitted folks who submitted great symposia ideas this yearand some we could not accommodate but hope to have back in2021 in San Antonio. We thank all our Section Chairs forhelping to organize the program and our WSSA/WSWS meetingmanager and Executive Secretary, Mr. Eric Gustafson, for hiscommitment to ensure a successful meeting on all levels. We areexcited about the great participation and the many opportunitiesto exchange scientific information on weed science research,education and extension. We look forward to a productive andrewarding meeting.Bill CurranWSSA Program Chair and President-ElectCorey RansomWSWS Program Chair and President-Elect3
2020 Program CommitteeGeneral Program Chairs .Vice Chair Agronomic Crops Horticultural Crops .Turf and Ornamentals .Pastures, Rangelands, .Forests, Rights of Way, Wildlandsand Aquatic Invasive PlantsTeaching and Extension .Formulation, Adjuvant, & Application TechnologyWeed Biology and Ecology .William Curran and CoreyRansomAnita DilleRyan Lins andMisha ManuchehriMatthew Cutulle andJesse RichardsonAnthony Witcher andSandeep RanaMark Renz andHarry QuickeSandeep Rana andThomas GettsMalik Mayank andVip a n K u m a rPhysiology Mohsen Mesagran andCaio BrunharoJames Cuda andMin RayamajhiPaul TsengIntegrated Weed ManagementVijay Singh andShilpa SinghSustaining Member Exhibits Greg DahlPoster Sessions .Thomas MuellerStudent Contest Darrin Dodds andCarl CoburnBiocontrol of Weeds Program Booklet and AbstractsAll those registering for the annual meeting will receive aprogram booklet. All registrants will receive programs atthe meeting registration desk. To find the time andlocation of specific papers, search by the author in theauthor index in the back of the program.Please also download the meeting app for the most up todate schedules and information.Posters and Sustaining Member ExhibitsAll posters and Sustaining Member Exhibits will be ondisplay from Tuesday at 7am to Thursday at 11am. Thetimes will not be replicated daily throughout the program.4
CONDENSED PROGRAMWSSA COMMITTEE MEETINGS ANDOTHER ACTIVITIESSATURDAY FEBRUARY 29WSSA Board ofDirectors07:00 AM - 05:00 PM Maui Suite #1SUNDAY MARCH 1WSSA Board ofDirectors Meeting07:00 AM - 12:00 PM Maui Suite #1HRAC Global/ US07:00 AM - 12:00 PM Maui Suite #4Whale WatchingTour09:00 AM - 12:00 PM LobbyHRAC US01:00 PM - 05:00 PM Maui Suite #3HRAC Global01:00 PM - 05:00 PM Maui Suite #4NIFA Fellow01:00 PM - 03:00 PM Maui Suite #1Advisory CommitteeUSDA-ARS IWMArea Wide Project01:00 PM - 05:00 PM Monarchy #5MONDAY MARCH 2Board/ CommitteeMember Breakfast06:30 AM - 08:00 AM JapengoWSWS Board ofDirectors Meeting07:00 AM - 04:00 PM RegencyBoardroomAPHIS Meeting07:00 AM - 09:00 AM Monarchy #7F3 - EndowmentFund08:00 AM - 09:00 AM Maui Suite #2P2 - Weed ScienceEditorial Board08:00 AM - 09:00 AM Maui Suite #35
E10 - Weed Controlfor Specialty Crops08:00 AM - 09:00 AM Maui Suite #4E2 - Science Policy08:00 AM - 10:00 AM Maui Suite #1International Weed 08:00 AM - 10:00 AM Monarchy #2Genome CommitteeE6 - Research andCompetitive Grants08:00 AM - 10:00 AM Monarchy #3P3 - WeedTechnologyEditorial Board09:00 AM - 10:00 AM Maui Suite #3W15 - Formulation,Adjuvant &ApplicationTechnology09:00 AM - 10:00 AM Maui Suite #2W10 - Constitutionand OperatingProcedures09:00 AM - 11:00 AM Maui Suite #4Whale WatchingTour09:00 AM - 12:00 PM LobbyE12b - HerbicideResistanceEducation10:00 AM - 12:00 PM Maui Suite #1F4 - ProfessionalDevelopment andMembership10:00 AM - 11:00 AM Maui Suite #2P4 - Invasive PlantScience andManagementEditorial Board10:00 AM - 11:00 AM Maui Suite #3International WeedGenomeCommittee10:00 AM - 11:00 AM Monarchy #2WSWS Rita Beard10:00 AM - 11:00 AM Monarchy #3W11 - Extension11:00 AM - 12:00 PM Maui Suite #2P1 - PublicationsBoard11:00 AM - 12:00 PM Maui Suite #3Kochia Work Group 11:00AM – 12:00PME11 - Weed LossMonarchy #211:00 AM - 01:00 PM Monarchy #66
E12a - HerbicideResistant Plants12:00 PM - 02:00 PM Monarchy #7IWSS BoardMeeting1:00PM – 4:00PMMonarchy #6WERA7702:00PM- 04:00PMMonarchy #7Registration01:00 PM - 04:00 PM MonarchyTerrace FoyerPoster Setup01:00 PM - 04:00 PM Maui Suite #1-4General Session04:00 PM - 06:00 PM Monarchy #1-4Welcome Reception06:00 PM - 08:00 PM Halona KaiTUESDAY MARCH 3Student ContestJudge Breakfast06:00 AM - 07:00 AM Lahaina #3/4E13 - PublicAwareness07:00 AM - 09:00 AM JapengoRegistration07:00 AM - 05:00 PM MonarchyTerrace FoyerJudges WorkRoomE8 - EnvironmentalAspects of WeedManagement07:00 AM - 05:00 PM RegencyBoardroom12:00 PM - 01:00 PM JapengoWomen in WeedScience Event12:00 PM - 02:00 PM Lahaina #3/4IWSS GeneralSession05:00 PM - 06:00 PM Lahaina #3E4 - FederalNoxious andInvasive Weeds05:00 PM - 06:00 PM Lahaina #4What’s New inIndustry05:00 PM - 06:00 PM Monarchy #4BASF SponsoredLuau06:00 PM - 08:00 PM Halona Kai7
WEDNESDAY MARCH 4PresidentsBreakfast06:30 AM - 08:00 AM JapengoE14 - Website07:00 AM - 09:00 AM Lahaina #3F2 - Finance07:00 AM - 09:00 AM Lahaina #4Judges WorkRoom07:00 AM - 04:00 PM RegencyBoardroomRegistration08:00 AM - 05:00 PM MonarchyTerrace FoyerWSSA StudentBusiness Meeting11:00 AM - 12:00 PM Lahaina #3/4WSSA/ WSWSJoint StudentLuncheon12:00 PM - 01:00 PM Lahaina #3/4WSWS StudentBusiness Meeting01:00 PM - 02:00 PM Lahaina #3/4P22 - TerminologyParent12:00 PM - 01:00 PM Maui Suite #5DSC – Group12:00PM – 01:00PMSeed Corn Tour02:00 PM - 04:30 PM LobbyStudent Awards05:00 PM - 06:30 PM Monarchy #4Student Night Out07:00 PM - 09:00 PM Monarchy #4JapengoTHURSDAY MARCH 5WSWS BusinessBreakfast06:30 AM - 08:00 AM Lahaina #3/4WSSA BusinessBreakfast06:30 AM - 08:00 AM Sunset TerraceRemove Posters01:00 PM - 03:00 PM Maui Suite #1-4WSWS Board ofDirectors Meeting01:00 PM - 02:30 PM Lahaina #3WSSA Board ofDirectors Meeting03:00 PM - 05:00 PM Lahaina #48
SUMMARY OF 2020 PROGRAMTUESDAY and WEDNESDAY MORNINGS, MARCH 3 & 4Authors of even numbered posters will present onMarch 3 and odd numbered posters will presenton March 4POSTER - 01.Agronomic Crops07:00 AM - 09:00 AM Maui Suite #1-4POSTER - 02.Horticultural Crops07:00 AM - 09:00 AM Maui Suite #1-4POSTER - 03. Turfand Ornamentals07:00 AM - 09:00 AM Maui Suite #1-4POSTER - 04.07:00 AM - 09:00 AM Maui Suite #1-4Pasture, Range,Forest, Rights ofways, Wildland, andAquatic InvasivePlantsPOSTER - 07.Teaching andExtension/ Teachingand TechnologyTransfer07:00 AM - 09:00 AM Maui Suite #1-4POSTER - 08.Formulation,Adjuvant, &ApplicationTechnology07:00 AM - 09:00 PM Maui Suite #1-4POSTER - 09.Weed Biology andEcology07:00 AM - 09:00 AM Maui Suite #1-4POSTER - 10.Biocontrol ofWeeds07:00 AM - 09:00 AM Maui Suite #1-4POSTER - 11.Physiology07:00 AM - 09:00 AM Maui Suite #1-4POSTER - 12. Soiland EnvironmentalAspects07:00 AM - 09:00 AM Maui Suite #1-49
POSTER - 13.Integrated WeedManagement07:00 AM - 09:00 AM Maui Suite #1-4TUESDAY MARCH 33MT Student OralCompetition - MS09:00 AM - 11:00 PM Monarchy #23MT Student OralCompetition - PhD09:00 AM - 11:30 PM Monarchy #3SYMPOSIUM - 4.The Ecological andBiodiversity Impactof Invasive GrassSpecies and TheirManagement09:00 AM - 12:00 PM Monarchy #4ORAL - 01.Agronomic Crops I09:00 AM - 12:00 PM Monarchy #5ORAL - 02.Horticultural Crops09:00 AM - 12:00 PM Monarchy #1ORAL - 09. WeedBiology andEcology09:00 AM - 12:00 PM Monarchy #7ORAL - 11.Physiology09:00 AM - 12:00 PM Monarchy #6SYMPOSIUM - 3.01:00 PM - 05:00 PM Monarchy #4Genomics of Weedyand Invasive Species- 2025 and BeyondORAL - 01.Agronomic Crops I01:00 PM - 05:00 PM Monarchy #5ORAL - 01.Agronomic Crops II01:00 PM - 05:00 PM Monarchy #6ORAL - 02.Horticultural Crops01:00 PM - 04:30 PM Monarchy #1ORAL - 04.Pasture, Range,Forest, Rights ofways, Wildland,and AquaticInvasive Plants01:00 PM - 05:00 PM Monarchy #210
ORAL - 07.01:00 PM - 05:00 PM Monarchy #3Teaching andExtension/ Teachingand TechnologyTransferORAL - 09. WeedBiology andEcology01:00 PM - 04:45 PM Monarchy #7WEDNESDAY MARCH 4SYMPOSIUM - 1.2020 Vision forHawaiian InvasivePlant Management3MT Final Round09:00 AM - 12:00 PM Monarchy #209:00 AM - 11:00 AM Monarchy #3SYMPOSIUM - 2.The Role ofIntelligent Machinesin WeedManagement09:00 AM - 04:30 PM Monarchy #4ORAL - 01.Agronomic Crops I09:00 AM - 12:00 PM Monarchy #5ORAL - 04.Pasture, Range,Forest, Rights ofways, Wildland,and AquaticInvasive Plants09:00 AM - 12:00 PM Monarchy #1ORAL - 11.Physiology09:00 AM - 12:00 PM Monarchy #6ORAL - 13.Integrated WeedManagement09:00 AM - 12:00 PM Monarchy #7ORAL - 01.Agronomic Crops I01:00 PM - 04:30 PM Monarchy #5ORAL - 01.Agronomic Crops II01:00 PM - 04:30 PM Monarchy #6ORAL - 03. Turfand Ornamentals01:00 PM - 04:30 PM Monarchy #311
ORAL - 04.Pasture, Range,Forest, Rights ofways, Wildland,and AquaticInvasive Plants01:00 PM - 04:30 PM Monarchy #1ORAL - 10.Biocontrol ofWeeds01:00 PM - 02:45 PM Monarchy #2ORAL - 13.Integrated WeedManagement01:00 PM - 04:30 PM Monarchy #7ORAL - 14. TravelEnrichmentExperience03:00 PM - 04:30 PM Monarchy #2THURSDAY MARCH 5SYMPOSIUM - 5.Toxicology andWeed Science08:30 AM - 12:00 PM Monarchy #4ORAL - 01.Agronomic Crops I08:30 AM - 12:00 PM Monarchy #5ORAL - 04.Pasture, Range,Forest, Rights ofways, Wildland,and AquaticInvasive Plants08:30 AM - 12:00 AM Monarchy #1ORAL - 08.Formulation,Adjuvant, &ApplicationTechnology08:30 AM - 12:00 PM Monarchy #2ORAL - 09. WeedBiology andEcology08:30 AM - 12:00 PM Monarchy #7WORKSHOP Building aCommunity toBattle the WickedProblem ofHerbicideResistance01:00 PM - 04:00 PM Monarchy #412
PROGRAMMONDAY AFTERNOON MARCH 2General SessionLOCATION:TIME:MODERATOR:Monarchy #1-404:00 PM - 06:00 PMWilliam S. CurranPenn State UniversityUniversity Park, PACO-MODERATOR: Corey V. RansomUtah State UniversityLogan, UT*SPEAKER04:00 PMIntroductions and Announcements. William S.Curran* and Corey V. Ransom; Penn StateUniversity, University Park, PA and Utah StateUniversity, Logan, UT04:10 PMIWSS Organization and Meeting Update. NildaRoma-Burgos*; University of Arkansas,Fayetteville, AR04:15 PMKeynote: Hawaiʻi: A World of Weeds inMicrocosm.Samuel M. ʻOhukaniʻōhiʻa Gon III*; The NatureConservancy of Hawaii, Honolulu, HI04:45 PMPresidential Address. Larry Steckel*1 and PatClay*2; 1University of Tennessee, Jackson, TN,2VALENT U.S.A. LLC, Fresno, CA05:05 PMPresentation of Awards. William S. Curran*1and Pat Clay*2; 1Penn State University, UniversityPark, PA, 2VALENT U.S.A. LLC, Fresno, CA06:00 PMAdjourn for Welcome Reception13
TUESDAY and WEDNESDAYMORNINGS, MARCH 3 & 4Authors of even numbered posters willpresent on March 3 and odd numberedposters will present on March 4Agronomic CropsLOCATION:TIME:MODERATOR:*PRESENTERMaui Suite #1-407:00 AM - 09:00 AMThomas C. MuellerUniversity of TennesseeKnoxville, TN† STUDENT CONTEST - MS†Wheat Variety Tolerance to Metribuzin and Pyroxasulfone.Lane S. Newlin*, Misha R. Manuchehri, Brett F. Carver,Amanda De Oliveira Silva, Hannah C. Lindell, Justin T.Childers; Oklahoma State University, Stillwater, OK (1)†Overlapping Residual Herbicides for Control ofGlyphosate-Resistant Palmer Amaranth inDicamba/Glyphosate-Resistant Soybean. Shawn T.McDonald*1, Prashant Jha2, Amit J. Jhala1; 1University ofNebraska-Lincoln, Lincoln, NE, 2Iowa State University, Ames,IA (2)†Interference of Amaranthus palmeri in Sugar Beet. WhitneyR. Schultz*, Nevin Lawrence; University of Nebraska-Lincoln,Scottsbluff, NE (3)†Soybean Response to Aminopyralid, Dicamba, 2,4-D andAminocyclopyrachlor Application. Trey I. Clark*1, Thomas C.Mueller1, Larry Steckel2; 1University of Tennessee, Knoxville,TN, 2University of Tennessee, Jackson, TN (4)†Meshing Soybean Weed Management with AgronomicPractices in Oklahoma. Misha R. Manuchehri, Sarah E.Kezar*; Oklahoma State University, Stillwater, OK (5)†Interactions of Dicamba, Glyphosate, and Glufosinate asTank-Mix Partners. Adam L. Constine*, Christy Sprague;Michigan State University, East Lansing, MI (6)14
†Boll Opening Efficacy as Influenced by Cotton Maturity.Cayden B. Catlin*, Bradley R. Wilson, Seth A. Byrd; OklahomaState University, Stillwater, OK (7)†'Planting Green' into Cereal Cover Crops ImprovesHorseweed (Erigeron canadensis) Suppression. John A.Schramski*, Christy Sprague, Karen A. Renner; Michigan StateUniversity, East Lansing, MI (8)†Cover Crop Vs. Cash Crop: A Comparison of TwoRenovation Approaches in Deteriorated Wyoming Hayfields.Tyler Z. Jones*, Brian Mealor; University of Wyoming,Laramie, WY (9)†Control of Velvetleaf by Tank-mixing Dicamba withFluthiacet or Glyphosate in Dicamba/Glyphosate-resistantSoybean. Jose H. de Sanctis*1, Stevan Knezevic2, Amit J.Jhala1; 1University of Nebraska-Lincoln, Lincoln, NE,2University of Nebraska-Lincoln, Concord, NE (10)†Greenhouse Herbicide Screening for Industrial Hemp.Joseph Mettler*, Kirk A. Howatt; North Dakota StateUniversity, Fargo, ND (11)†Timing of Post-Emergence Herbicide Application ImpactsWeed Control and Seed Fecundity in Wisconsin SoybeanProduction. Sarah V. Striegel*, Maxwel Coura Oliveira, RyanP. DeWerff, Nicholas J. Arneson, David E. Stoltenberg, ShawnP. Conley, Rodrigo Werle; University of Wisconsin-Madison,Madison, WI (12)Impact of Tank Mix Partner on Solution pH and SecondaryMovement of Dicamba and 2,4-D. Sarah V. Striegel*, NikolaArsenijevic, Maxwel Coura Oliveira, Ryan P. DeWerff, DavidE. Stoltenberg, Shawn P. Conley, Rodrigo Werle; University ofWisconsin-Madison, Madison, WI (13)*PRESENTER† STUDENT CONTEST - PhD†The Potential for New Residual Herbicides in Rice. ConnorWebster*, Eric Webster, Benjamin M. McKnight, David C.Walker, Bradley Greer, Samer Y. Rustom; Louisiana StateUniversity, Baton Rouge, LA (14)†Effects of Deep Seeding on Weed Management and CropResponse in California Rice Systems. Alexander R. Ceseski*,Amar Godar, Kassim Al-Khatib; University of California, Davis,Davis, CA (15)15
†Evaluating Reduced Rate POST Herbicide Mixtures forPalmer Amaranth (Amaranthus palmeri) Control in DryBean. Clint W. Beiermann*1, Cody F. Creech1, Amit J. Jhala2,Stevan Knezevic3, Robert Harveson1, Nevin Lawrence1;1University of Nebraska-Lincoln, Scottsbluff, NE, 2University ofNebraska-Lincoln, Lincoln, NE, 3University of NebraskaLincoln, Concord, NE (16)†Effect of Sublethal 2,4-D Rates on Quality and Value ofCotton Fiber. Bradley R. Wilson*1, Misha R. Manuchehri1,Peter A. Dotray2, Wayne Keeling3, Gaylon Morgan4, Seth A.Byrd1; 1Oklahoma State University, Stillwater, OK, 2Texas TechUniversity and Texas A&M AgriLife Research and ExtensionService, Lubbock, TX, 3Texas A&M AgriLife Research,Lubbock, TX, 4Cotton Incorporated, Cary, NC (17)†Options for Managing Weedy Rice in Louisiana. BradleyGreer*1, Eric Webster1, Benjamin M. McKnight1, David C.Walker1, Samer Y. Rustom1, Connor Webster1, Justin B.Hensley2; 1Louisiana State University, Baton Rouge, LA,2Arkansas Ag Specialists, LLC, Dumas, AR (18)†Carry Over Effects of Residual Cotton Herbicides on FallPlanted Cover Crops. Enelise Osco Helvig*1, Spencer L.Samuelson2, Cleber D. de Goes Maciel1, Muthukumar V.Bagavathiannan2; 1Universidade Estadual do Centro Oeste,Guarapuava, Brazil, 2Texas A&M University, College Station,TX (19)†Evaluation of New Rice Herbicides Applied in a SalvageSituation. Samer Y. Rustom*, Eric Webster, Benjamin M.McKnight, Connor Webster, Bradley Greer, David C. Walker;Louisiana State University, Baton Rouge, LA (20)†Characterization of Dicamba Cross Resistance in aMultiple-Resistant Waterhemp (Amaranthus tuberculatus)Population from Illinois. Lucas Bobadilla*, Darci A.Giacomini, Patrick Tranel; University of Illinois, Urbana, IL(21)†Effects of Simulated Dew on Dicamba Volatility andSoybean Sensitivity. Matthew Osterholt*1, Julie M. Young2,Bryan G. Young2; 1Purdue University, West Lafayette, IN,2Purdue University, Brookston, IN (22)†Assessment of North Carolina Farmer's Glufosinate Useand Applications. Eric A. Jones*, Wesley Everman, Ramon G.Leon, Charlie W. Cahoon; North Carolina State University,Raleigh, NC (23)16
†Using Reduced Rates of Quizalofop to Control Weedy Rice.David C. Walker*1, Eric Webster1, Ronald J. Levy Jr.2,Benjamin M. McKnight1, Samer Y. Rustom1, Lucas C.Webster1, William B. Greer1; 1Louisiana State University, BatonRouge, LA, 2Louisiana State University, Rayne, LA (24)†Cover Crops as a Summer Annual Weed Management Toolin Dryland Corn Cropping Systems of Semi-Arid Nebraska.Alexandre T. Rosa*1, Cody F. Creech2, Roger Elmore1, DaranRudnick1, John Lindquist1, Rodrigo Werle3; 1University ofNebraska-Lincoln, Lincoln, NE, 2University of NebraskaLincoln, Scottsbluff, NE, 3University of Wisconsin-Madison,Madison, WI (25)Cover Crops and Wheat Stubble Management Effects onWeed Demographics and Corn Productivity in Semi-AridNebraska. Alexandre T. Rosa*1, Cody F. Creech2, RogerElmore1, Daran Rudnick1, John Lindquist1, Chuck Burr3,Strahinja Stepanovic4, Rodrigo Werle5; 1University of NebraskaLincoln, Lincoln, NE, 2University of Nebraska-Lincoln,Scottsbluff, NE, 3University of Nebraska-Lincoln, North Platte,NE, 4University of Nebraska-Lincoln, Grant, NE, 5University ofWisconsin-Madison, Madison, WI (26)Benzobicyclon Utility for Weedy Rice Control. Mason C.Castner*, Jason K. Norsworthy, Chad Brabham, Fidel GonzalezTorralva; University of Arkansas, Fayetteville, AR (27)Control of Johnsongrass (Sorghum halepense) and Foxtailswith Post-emergence Herbicides in Yellow and WhitePopcorn Hybrids. Samantha D. Isaacson*, Amit J. Jhala, JohnLindquist; University of Nebraska-Lincoln, Lincoln, NE (28)Weed Management and Crop Response Utilizing Isoxaflutolein HPPD Tolerant Cotton. Delaney C. Foster*1, Peter A.Dotray2, Corey Thompson3, Greg Baldwin4, Frederick Moore5;1Texas Tech University, Lubbock, TX, 2Texas Tech Universityand Texas A&M AgriLife Research and Extension Service,Lubbock, TX, 3BASF, Abernathy, TX, 4BASF, ResearchTriangle Park, NC, 5BASF, Lubbock, TX (29)Effect of Winter Wheat Cover Crop Termination Time onDry Bean Production. Charles T. Hicks*1, Andrew R. Kniss2,David A. Claypool2; 1Bayer, Fort Collins, CO, 2University ofWyoming, Laramie, WY (30)Sphere of Influence of Palmer Amaranth (Amaranthuspalmeri) in Cotton (Gossypium hirsutum). Nicholas T.Basinger*1, David Weisberger1, Logan M. Dyer1, Ramon G.Leon2; 1University of Georgia, Athens, GA, 2North CarolinaState University, Raleigh, NC (31)17
Using Pesticides Wisely - Georgia 2019. A StanleyCulpepper*1, Jenna C. Vance1, Thomas Gray2, Laura P.Johnson3, Eric P. Prostko1; 1University of Georgia, Tifton, GA,2Georgia Department of Agriculture, Atlanta, GA, 3University ofGeorgia, Athens, GA (32)Sugarcane (Saccharum spp. Hybrids) Yield ComponentResponse to Divine Nightshade (Solanum nigrescens)Establishment and Removal Timing. Douglas J. Spaunhorst*;USDA-ARS, Houma, LA (33)Control of Canada Fleabane in Winter Wheat withPostemergence Herbicides. Nader Soltani*, Peter H. Sikkema;University of Guelph, Ridgetown, ON, Canada (34)Glyphosate in Organic Grain: Exploring Potential Sources ofContamination Through Seed Analysis. Lilianna M. Bento*1,Barbara Keith1, Bruce Maxwell1, Jona Verreth2, William Dyer1;1Montana State University, Bozeman, MT, 2MontanaAgriculture Experiment Station Analytical Laboratory,Bozeman, MT (35)Effective Dicamba Exposure on Enlist Soybean. JulieReeves*, Sandy Steckel, Clay M. Perkins, Larry Steckel;University of Tennessee, Jackson, TN (36)Effect of Herbicides Applied at First Visible FemaleInflorescence on Palmer Amaranth (Amaranthus palmeri)Fecundity and Seed Viability. Eric B. Scruggs*, Michael L.Flessner; Virginia Tech, Blacksburg, VA (37)Soybean Response to Multiple Dicamba Exposure. Todd A.Baughman*1, Robbie Peterson1, Misha R. Manuchehri2;1Oklahoma State University, Ardmore, OK, 2Oklahoma StateUniversity, Stillwater, OK (38)Volunteer Cotton Response to POST Herbicide Applications.Robbie Peterson*, Todd A. Baughman; Oklahoma StateUniversity, Ardmore, OK (39)Expanding the Vision of Perennial Agriculture with IR-4Registration in Kernza. Clair L. Keene*1, Eugene P. Law2,Jacob Jungers3, Don Wyse3, Valentin Picasso4, David E.Stoltenberg4; 1North Dakota State University Extension,Williston, ND, 2Cornell University, Ithaca, NY, 3University ofMinnesota, Saint Paul, MN, 4University of Wisconsin-Madison,Madison, WI (40)Evaluation of PRE and POST Applications of Metribuzin onWeed Control Programs in Corn (Zea mays). TaghiBararpour*, Ralph R. Hale, M. W. Ebelhar; Mississippi StateUniversity, Stoneville, MS (41)18
Burndown Residual Herbicide Plus Halauxifen-methyl(Elevore) for Early Preplant Horseweed (Conyza canadensis)Control. Taghi Bararpour*1, Ralph R. Hale1, Larry C. Walton2,Henry M. Edwards1; 1Mississippi State University, Stoneville,MS, 2Corteva, Tupelo, MS (42)Does Late Season Weed Cover Reduce Corn Silage Yield andAlfalfa Establishment in Interseeded Corn/alfalfa Systems?Jose Luiz Carvalho de Souza Dias*, Mark J. Renz; University ofWisconsin-Madison, Madison, WI (43)Field Bindweed (Convolvulus arvensis) Management inCalifornia Cotton. Kurt J. Hembree*; University of CaliforniaCooperative Extension, Fresno, CA (44)Cereal Rye Termination Timing and Method InfluenceGlyphosate-Resistant Horseweed (Erigeron Canadensis)Suppression in Sugarbeet. Brian J. Stiles II*, Christy Sprague;Michigan State University, East Lansing, MI (45)Roughstalk Bluegrass (Poa trivialis) Control in WinterWheat. Gary Edward Powell*, Brian J. Stiles II, ChristySprague; Michigan State University, East Lansing, MI (46)Comparison of Herbicide Programs in Conventional,Glufosinate, and Glyphosate/Dicamba-Resistant SoybeansAcross Nebraska. Adam Striegel*1, Stevan Knezevic2, NevinLawrence3, Gary Hein1, Greg R. Kruger4, Chris Proctor1, KentEskridge1, Amit J. Jhala1; 1University of Nebraska-Lincoln,Lincoln, NE, 2University of Nebraska-Lincoln, Concord, NE,3University of Nebraska-Lincoln, Scottsbluff, NE, 4University ofNebraska-Lincoln, North Platte, NE (47)Herbicide Resistant Italian Ryegrass (Lolium perenne Ssp.multiflorum) Survey in Northern Idaho and EasternWashington. Traci Rauch*, Joan M. Campbell; University ofIdaho, Moscow, ID (48)Glyphosate-Tolerant Soybean Yield Loss and YieldResponse to Micro-Rates of 2,4-D as Influenced by GrowthStage. Ivan B. Cuvaca*1, Stevan Knezevic2, Jon Scott1, DarkoJovanovic1; 1University of Nebraska-Lincoln, Lincoln, NE,2University of Nebraska-Lincoln, Concord, NE (49)Effect of Growth Stage on Glyphosate-Tolerant SoybeanSensitivity to Micro-rates of 2,4-D. Ivan B. Cuvaca*1, JonScott1, Darko Jovanovic1, Stevan Knezevic2; 1University ofNebraska-Lincoln, Lincoln, NE, 2University of NebraskaLincoln, Concord, NE (50)Effects of Dicamba Ultra Micro-Rates on Soybean Yield Hormesis or Not? Stevan Knezevic*; University of NebraskaLincoln, Concord, NE (51)19
Growth and Sensitivity of Dicamba-Tolerant Soybean toMicro-Rates of 2,4-D. Stevan Knezevic*1, Jon Scott2, DarkoJovanovic2, Ivan B. Cuvaca2; 1University of Nebraska-Lincoln,Concord, NE, 2University of Nebraska-Lincoln, Lincoln, NE(52)Weed Management Systems in Imidazolinone TolerantGrain Sorghum in South Texas. Alvaro Garcia*1, Joshua A.McGinty2, Jamie Foster3, Greta Schuster1, Alinna Umphres1,Paul A. Baumann4; 1Texas A&M University, Kingsville, TX,2Texas A&M AgriLife Extension, Corpus Christi, TX, 3TexasA&M Ag
Gylling Data Management, Inc. Marrone Bio Innovations, Inc. CONTRIBUTORS AMVAC Chemical Corp Greenleaf Technologies TeeJet Technologies Nippon Soda Ltd Oxiteno USA . Management, 3) 2020 Vision for Hawaiian Invasive Plant Management, 4) The Role of Intelligent Machines in Weed
