Abundance and Distribution of Western and Northern Corn Rootworm (Diabrotica spp.) and Prevalence of Rotation Resistance in Eastern Iowa

dc.contributor.author Dunbar, Michael
dc.contributor.author Gassmann, Aaron
dc.contributor.author Gassmann, Aaron
dc.contributor.department Entomology
dc.date 2018-02-14T18:31:21.000
dc.date.accessioned 2020-06-30T02:22:11Z
dc.date.available 2020-06-30T02:22:11Z
dc.date.copyright Tue Jan 01 00:00:00 UTC 2013
dc.date.embargo 2014-09-25
dc.date.issued 2013-02-01
dc.description.abstract <p>The western corn rootworm <em>Diabrotica virgifera virgifera</em> LeConte (Coleoptera: Chrysomelidae) and the northern corn rootworm <em>Diabrotica barberi</em> Smith & Lawrence (Coleoptera: Chrysomelidae) are major pests of corn (<em>Zea mays</em> L.). Historically, crop rotation has been an effective management strategy, but both species have adapted to crop rotation in the Midwest. For both species in eastern Iowa, we measured abundance and prevalence of rotation resistance using sticky traps and emergence cages in fields of corn and soybean (<em>Glycine max</em> L.). Based on currently available data, we calculated the economic thresholds for these pests at two <em>Diabrotica</em> spp. per trap per day in cornfields and 1.5 <em>D.</em> <em>v. virgifera</em> per trap per day in soybean fields. The economic injury level of rotation-resistant <em>D.</em> <em>barberi</em> was determined to be 3.5 adult insects per emergence cage per year. Peak abundance of rootworm adults in cornfields was below economic thresholds in the majority of fields sampled, suggesting that management of rootworm larvae in continuous cornfields may not always be necessary. Rotation-resistant <em>D. barberi</em> was found throughout eastern Iowa using emergence cages in first-year cornfields, however, the abundance was below levels expected to impose economic injury in 14 of 17 fields evaluated. The presence of rotation-resistant <em>D. v. virgifera</em>, as measured by the occurrence of this insect in soybean fields, occurred only in northeastern Iowa and was also below the economic threshold. These data suggests that crop rotation remains a viable pest management strategy in eastern Iowa.</p>
dc.description.comments <p>This article is from <em>Journal of Economic Entomology</em> 106 (2013): 168, doi:<a href="http://dx.doi.org/10.1603/EC11291">10.1603/EC11291</a>. Posted with permission.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/ent_pubs/173/
dc.identifier.articleid 1180
dc.identifier.contextkey 6163241
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath ent_pubs/173
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/23777
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/ent_pubs/173/2013_Gassmann_AbundanceDistribution.pdf|||Fri Jan 14 21:20:01 UTC 2022
dc.source.uri 10.1603/EC11291
dc.subject.disciplines Agriculture
dc.subject.disciplines Agronomy and Crop Sciences
dc.subject.disciplines Entomology
dc.subject.disciplines Systems Biology
dc.subject.keywords Diabrotica barberi
dc.subject.keywords Diabrotica virgifera virgifera
dc.subject.keywords economic injury level
dc.subject.keywords integrated pest management (IPM)
dc.subject.keywords geographic information systems
dc.title Abundance and Distribution of Western and Northern Corn Rootworm (Diabrotica spp.) and Prevalence of Rotation Resistance in Eastern Iowa
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication 59bd52a0-183d-4ea1-b353-4b07440b1e9f
relation.isOrgUnitOfPublication f47c8cad-50be-4fb0-8870-902ff536748c
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