Efficacy of heat treatment for disinfestation of concrete grain silos.

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dc.contributor.author Opit, G.P.
dc.contributor.author Arthur, F.H.
dc.contributor.author Bonjour, E.L.
dc.contributor.author Jones, C.L.
dc.contributor.author Phillips, Thomas W.
dc.date.accessioned 2011-10-25T15:04:10Z
dc.date.available 2011-10-25T15:04:10Z
dc.date.issued 2011-10-25
dc.identifier.uri http://hdl.handle.net/2097/12439
dc.description.abstract Field experiments were conducted in 2007 and 2008 to evaluate heat treatment for disinfestations of empty concrete elevator silos. A Mobile Heat Treatment Unit was used to introduce heat into silos to attain target conditions of 50°C for at least 6 h. Ventilated plastic containers with a capacity of 100 g of wheat, Triticum aestivum L., held Rhyzopertha dominica (F.) (Coleoptera: Bostrichidae) and Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae). Polyvinyl chloride containers with a capacity of 300 g of wheat held adults of Liposcelis corrodens (Heymons) (Psocoptera: Liposcelididae) and Liposcelis decolor (Pearman), which were contained in 35-mm Petri dishes within the grain. Containers were fastened to a rope suspended from the top of the silo at depths of 0 m (just under the top manhole), 10 m, 20 m, and 30 m (silo floor). When the highest temperature achieved was ≍50°C for 6 h, parental mortality of R. dominica and T. castaneum, and both psocid species was 98-100%. Progeny production of R. dominica occurred when there was parental survival, but in general R. dominica seemed less impacted by the heat treatment than T. castaneum. There was 100% mortality of L. corrodens at all depths in the heat treatments but only 92.5% mortality for L. decolor, with most survivors located in the bioassay containers at the top of the silo. Results show wheat kernels may have an insulating effect and heat treatment might be more effective when used in conjunction with sanitation and cleaning procedures. en_US
dc.relation.uri http://esa.publisher.ingentaconnect.com/content/esa/jee;jsessionid=3ki1i5svcx5eh.alice en_US
dc.subject Rhyzopertha dominica en_US
dc.subject Tribolium castaneum en_US
dc.subject Liposcelis corrodens en_US
dc.subject Liposcelis decolor en_US
dc.subject Heat treatment en_US
dc.title Efficacy of heat treatment for disinfestation of concrete grain silos. en_US
dc.type Article (publisher version) en_US
dc.date.published 2011 en_US
dc.citation.doi doi: 10.1603/EC11104 en_US
dc.citation.epage 1422 en_US
dc.citation.issue 4 en_US
dc.citation.jtitle Journal of Economic Entomology en_US
dc.citation.spage 1415 en_US
dc.citation.volume 104 en_US
dc.contributor.authoreid fha en_US
dc.contributor.authoreid twp1 en_US

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