Soybean Aphid (Aphididae: Hemiptera) Population Growth as Affected by Host Plant Resistance and an Insecticidal Seed Treatment McCarville, Michael O'Neal, Matthew O'Neal, Matthew
dc.contributor.department Entomology 2018-02-14T01:17:39.000 2020-06-30T02:23:19Z 2020-06-30T02:23:19Z Tue Jan 01 00:00:00 UTC 2013 2015-06-01 2013-06-01
dc.description.abstract <p>The soybean aphid, <em>Aphis glycines</em> Matsumura (Hemiptera: Aphididae) is a significant soybean pest in the north central United States. Insecticidal seed treatments and host plant resistance are two commercially available management tools. Here we investigate the efficacy of both management tools throughout the season. Soybean lines containing the soybean aphid resistance genes <em>Rag1</em>, <em>Rag2</em>, or both <em>Rag1</em> + <em>Rag2</em> were compared with a near-isogenic aphid-susceptible line. Each line was grown in field plots both with and without thiamethoxam applied to the seed. Individual plants from each plot were caged and infested with soybean aphids to measure the efficacy and potential interaction of aphid resistance and thiamethoxam. Aphid population growth rate was measured for each caged plant for 9‐12 d after infestation. New cages were established each week from 34 d after planting (dap) to 92 dap to track seasonal variations in efficacy. Thiamethoxam reduced population growth only at the 42 dap time point and only for the susceptible, <em>Rag1</em>, and <em>Rag2</em> lines. The lack of an effect of thiamethoxam on the<em>Rag1</em>+ <em>Rag2</em> line was likely because of already high mortality from two resistance genes. Aphid resistance alone reduced population growth compared with the susceptible line at least till 55 dap for single-gene resistance and 63 dap for the two genes combined. Aphid resistance provided suppression of soybean aphid population growth throughout the season unlike the insecticidal seed treatment.</p>
dc.description.comments <p>This article is from <em>Journal of Economic Entomology</em> 106 (2013): 1302–1309, doi:<a href="" target="_blank">10.1603/EC12495</a>. Posted with permission.</p>
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dc.identifier archive/
dc.identifier.articleid 1029
dc.identifier.contextkey 5607689
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath ent_pubs/32
dc.language.iso en
dc.source.bitstream archive/|||Fri Jan 14 23:33:31 UTC 2022
dc.source.uri 10.1603/EC12495
dc.subject.disciplines Entomology
dc.title Soybean Aphid (Aphididae: Hemiptera) Population Growth as Affected by Host Plant Resistance and an Insecticidal Seed Treatment
dc.type article
dc.type.genre article
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