Standardized Field Trials in Cotton and Bioassays to Evaluate Resistance of Tobacco Thrips (Thysanoptera: Thripidae) to Insecticides in the Southern United States

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dc.contributor.authorKrob, Jessica L.en
dc.contributor.authorStewart, Scott D.en
dc.contributor.authorBrown, Sebe A.en
dc.contributor.authorKerns, Dawsonen
dc.contributor.authorGraham, Scott H.en
dc.contributor.authorPerkins, Clayen
dc.contributor.authorHuseth, Anders S.en
dc.contributor.authorKennedy, George G.en
dc.contributor.authorReisig, Dominic D.en
dc.contributor.authorTaylor, Sally V.en
dc.contributor.authorTowles, Tyler B.en
dc.contributor.authorKerns, David L.en
dc.contributor.authorThrash, Benjamin C.en
dc.contributor.authorLorenz, Gus M.en
dc.contributor.authorBateman, Nick R.en
dc.contributor.authorCook, Don R.en
dc.contributor.authorCrow, Whitney D.en
dc.contributor.authorGore, Jeffreyen
dc.contributor.authorCatchot, Angus L.en
dc.contributor.authorMusser, Fred R.en
dc.contributor.authorCatchot, Beverlyen
dc.coverage.countryUnited Statesen
dc.date.accessioned2022-10-05T17:04:58Zen
dc.date.available2022-10-05T17:04:58Zen
dc.date.issued2022-09en
dc.description.abstractFoliar-applied insecticide treatments may be necessary to manage thrips in cotton (Gossypium hirsutum L.) under severe infestations or when at-planting insecticide seed treatments do not provide satisfactory protection. The most common foliar-applied insecticide is acephate. Field observations in Tennessee suggest that the performance of acephate has declined. Thus, the first objective was to perform leaf-dip bioassays to assess if tobacco thrips, Frankliniella fusca (Hinds) (Thysanoptera: Thripidae), in cotton production regions have evolved resistance to foliar-applied insecticides. A second objective was to assess the performance of commonly applied foliar insecticides for managing thrips in standardized field trials in Arkansas, Tennessee, Mississippi, and Texas. For both objectives, several insecticides were evaluated including acephate, dicrotophos, dimethoate, lambda-cyhalothrin, imidacloprid, and spinetoram. Field trials and bioassays were completed from 2018 to 2021. Dose-response bioassays with acephate were performed on tobacco thrips field populations and a susceptible laboratory population. Bioassay results suggest that tobacco thrips have developed resistance to acephate and other organophosphate insecticides; however, this resistance seems to be most severe in Arkansas, Tennessee, and the Delta region of Mississippi. Resistance to other classes of insecticides were perhaps even more evident in these bioassays. The performance of these insecticides in field trials was variable, with tobacco thrips only showing consistent signs of resistance to lambda-cyhalothrin. However, it is evident that many populations of tobacco thrips are resistant to multiple classes of insecticides. Further research is needed to determine heritability and resistance mechanism(s).en
dc.description.notesGeorge Kennedy suggested the bioassay methods used in this study. I thank all the cooperators for maintaining field trials. This effort was partially supported by Cotton Incorporated.en
dc.description.sponsorshipCotton Incorporateden
dc.description.versionPublished versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1093/jee/toac136en
dc.identifier.eissn1938-291Xen
dc.identifier.issn0022-0493en
dc.identifier.pmid36099406en
dc.identifier.urihttp://hdl.handle.net/10919/112084en
dc.language.isoenen
dc.publisherOxford University Pressen
dc.rightsCreative Commons Attribution-NonCommercial 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/en
dc.subjectFrankliniella fuscaen
dc.subjectresistanceen
dc.subjectbioassayen
dc.subjectfield trialen
dc.titleStandardized Field Trials in Cotton and Bioassays to Evaluate Resistance of Tobacco Thrips (Thysanoptera: Thripidae) to Insecticides in the Southern United Statesen
dc.title.serialJournal of Economic Entomologyen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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