13317 1 archive 4015 disk0/00/01/33/17 2008-05-06 2009-08-20 14:38:58 2009-08-20 14:38:58 journalp show 0 en This article is the copyright property of the Entomological Society of America and may not be used for any commercial or other private purpose without specific written permission of the Entomological Society of America us_other us yes 0 http://esa.publisher.ingentaconnect.com/search/article?author=Bomford&year_from=1998&year_to=2008&database=1&pageSize=20&index=1 TRUE Bomford Michael K. Vernon Robert S. pub 8planthealth Barypeithes pellucidus; Nemocestes incomptus; physical control; Teflon Physical exclusion shows some potential as a novel root weevil control strategy, but barriers to root weevil immigration may also exclude beneficial insects, such as ground beetles. A field study was undertaken in 1997 to assess the impact of two physical barriers—portable plastic trenches and aluminum fences with Teflon tape—on root weevil and ground beetle immigration into plots of strawberry, Fragaria x ananassa (Duchesne). Barypeithes pellucidus (Boheman) and Nemocestes incomptus (Horn), each comprised 43% of the root weevils caught at the site. Most (86%) of the ground beetles caught in control plots were longer than 1 cm, the width of the gap in the portable trench top. Trenches excluded 75 and 63% of B. pellucidus and N. incomptus, respectively, without significantly reducing immigration of large (<1 cm) ground beetles. Fences excluded 65, 84, and 99% of B. pellucidus, N. incomptus, and large ground beetles, respectively. Adding diatomaceous earth to trenches did not increase their efficacy, and fences without Teflon tape excluded ground beetles but not root weevils. The reduction in the population of root weevils and other strawberry pests caused by the use of barriers reduced damage to strawberry plant leaves and increased strawberry plant survival relative to unprotected control plots. Advantages and disadvantages of these physical control tools are discussed with a view to creating superior tools for root weevil exclusion, compatible with an integrated pest management approach. Portable trenches may offer a means of selectively excluding root weevils but not ground beetles. 2005-08 published Environmental Entomology 34 4 Entomological Society of America Antonelli, A. L., and R. L. Campbell. 2001. Root weevil control on rhododendrons. Washington State University, Puyallop, WA. Baines, D., R. Stewart, and G. Boivin. 1990. Consumption of carrot weevil (Coleoptera: Curculionidae) by Þve species of carabids (Coleoptera: Carabidae) abundant in carrot fields in southwestern Quebec. Environ. Entomol. 19:1146-1149. Balsbaugh, E. U. Jr. 1988. 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Angew. Entomol. 4: 83-85. Feytaud, J. 1918. Etude sur lotiorhynque sillonne (Otiorhynchus sulcatus Fabr.). Ann. Serv. Epiphyt. 5: 145-192. Galford, J. R. 1987. Feeding habits of the weevil Barypeithes pellucidus (Coleoptera: Curculionidae). Entomol. News. 98: 163-164. Golob, P. 1997. Current status and future perspectives for inert dusts for control of stored product insects. J. Stored Prod. Res. 33: 69-79. Holopainen, J. K., and A. Varis. 1986. Effects of a mechanical barrier and formalin preservative on pitfall catches of carabid beetles (Coleoptera: Carabidae) in arable Þelds. J. Appl. Entomol. 102: 440-445. Hunt, D.W.A., and R. S. Vernon. 2001. Portable trench barrier for protecting edges of tomato Þelds from Colorado potato beetle (Coleoptera:Chrosomelidae). J. Econ. Entomol. 94: 204-207. Korunic, Z. 1998. Diatomaceous earths, a group of natural insecticides. J. Stored Prod. Res. 34: 87-97. Masaki, M., K. Ohmura, and F. Ichinohe. 1984. Host range studies of the black vine weevil, Otiorhynchus sulcatus (Fabricus) (Coleoptera: Curculionidae). Appl. Entomol. Zool. 19: 95-106. Moorehouse, E. R., A. T. Gillespie, and A. K. Charnley. 1990. The progress and prospects for the control of the black vine weevil, Otiorhynchus sulcatus by entomogenous fungi. Proceedings and Abstracts, Vth International Colloquium on Invertebrate Pathology and Microbial Control. 20-24 August. Adelaide, Australia. Moorehouse, E. R., A. K. Charnley, and A. T. Gillespie. 1992. A review of the biology and control of the vine weevil, Otiorhynchus sulcatus (Coleoptera: Curculionidae). Ann. Appl. Biol. 121: 431-454. SAS Institute. 2001. JMP userÕs guide, version 4. SAS Institute, Cary, NC. Vincent, C., G. Hallman, B. Panneton, and F. Fleurat-Lessard. 2003. Management of agricultural insects with physical control methods. Annu. Rev. Entomol. 48: 261-281. Warner, R. E., and F. B. Negley. 1976. The genus Otiorhynchus in America north of Mexico (Coleoptera: Curculionidae). Entomol. Soc. Wash. 78: 240-262. Zar, J. H. 1984. Biostatistical analysis. Prentice-Hall, Englewood Cliffs, NJ. public 844-849 8826 1 13317 2 application/pdf en public

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