Effects of Grassland Habitat and Plant Nutrients on Soybean Aphid and Natural Enemy Populations

dc.contributor.author Schmidt, Nicholas
dc.contributor.author O'Neal, Matthew
dc.contributor.author Schulte Moore, Lisa
dc.contributor.department Entomology
dc.date 2018-02-13T13:11:32.000
dc.date.accessioned 2020-06-30T02:22:09Z
dc.date.available 2020-06-30T02:22:09Z
dc.date.copyright Sat Jan 01 00:00:00 UTC 2011
dc.date.embargo 2013-07-26
dc.date.issued 2011-04-01
dc.description.abstract <p>The soybean aphid <em>Aphis glycines</em> Matsumura (Hemiptera: Aphididae) is an invasive economic pest of soybean (<em>Glycine max</em>[L.] Merrill) in the United States. Research has shown the endemic natural enemy community in the United States is capable of suppressing <em>A. glycines</em> below EILs, but this biological control is inconsistent, especially in simple agricultural landscapes. In the course of a 3-yr project (2006–2008) we sought to determine the affects of landscape composition, configuration, and plant nutrients (N, P, and K) on <em>A. glycines</em> and aphidophagous natural enemy abundance. Specifically, we tested whether nearby grasslands contribute to the abundance of natural enemies and the suppression of <em>A. glycines</em>. The study site was located around the Neal Smith National Wildlife Refuge, composed of >2,000 ha of reconstructed prairie, located in Jasper County, IA. We sampled <em>A. glycines</em>, natural enemies, and plant nutrients in 100 soybean fields while characterizing the landscape surrounding each field. <em>A. glycines</em>abundance was lowest in 2006 but reached economically damaging populations in 2007 and 2008. The ratio of natural enemies to <em>A. glycines</em> decreased in each year of our study (2006 > 2007 > 2008). Variation in <em>A. glycines</em> and natural enemies was best explained by year and, to a lesser extent by plant nutrient levels and landscape variables. Results suggest grassland habitat did not significantly contribute to the biological control of <em>A. glycines</em>. Furthermore, yearly decline of natural enemy may have facilitated the colonization of <em>A. glycines</em> leading to outbreaks later in the season.</p>
dc.description.comments <p>This article is from E<em>nvironmental Entomology,</em> 40(2):260-272, 2011, <br />doi: <a href="http://dx.doi.org/10.1603/EN10269">10.1603/EN10269</a></p>
dc.format.mimetype pdf
dc.identifier archive/lib.dr.iastate.edu/ent_pubs/17/
dc.identifier.articleid 1018
dc.identifier.contextkey 4353089
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath ent_pubs/17
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/23773
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/ent_pubs/17/2011_ONeal_EffectsGrasslandHabitat_31.pdf|||Fri Jan 14 21:09:16 UTC 2022
dc.source.uri 10.1603/EN10269
dc.subject.disciplines Agriculture
dc.subject.disciplines Entomology
dc.subject.disciplines Natural Resources Management and Policy
dc.subject.keywords Natural Resource Ecology and Management
dc.subject.keywords biological control
dc.subject.keywords ecosystem service
dc.subject.keywords tritrophic interaction
dc.subject.keywords soybean aphid
dc.title Effects of Grassland Habitat and Plant Nutrients on Soybean Aphid and Natural Enemy Populations
dc.type article
dc.type.genre article
dspace.entity.type Publication
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relation.isAuthorOfPublication 54a6b538-1698-4d40-9c1a-cca3b5108bef
relation.isOrgUnitOfPublication f47c8cad-50be-4fb0-8870-902ff536748c
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