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Plant-derived compounds and extracts with potential as aphid repellents |
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| Authors: | S.E. Halbert,D. Corsini,M. Wiebe,& S.F. Vaughn |
| Affiliation: | Department of Plant, Soil, &Agricultural Sciences, Aberdeen Research and Extension Center, University of Idaho, Aberdeen, ID, USA; Present address: Florida State Collection of Arthropods, Florida Department of Agriculture and Consumer Services, Division of Plant Industry, PO Box 147100, Gainesville, FL 32614-1285, USA; New Crops Processing and Technology Research Unit, USDA-ARS, National Center for Agricultural Utilization Research, Peoria, IL, USA |
| Abstract: | We devised a method for screening various substances for possible aphid repellency. Corn leaf aphids ( Rhopalosiphum maidis ) were released in an arena and allowed to select paired green tiles coated with petroleum jelly alone or petroleum jelly containing 1% of the substance being tested. Aphids adhering to tiles were counted 24 h later. If significantly fewer aphids landed on treated tiles, the substance was considered to have potential for repelling aphids. Fifty-five substances were tested. Most showed no activity, but several including β-citronellol, farnesol, geraniol, linalool, oils distilled from several species of Artemisia and Achillea millefolia (yarrow) oil showed some promise. |
| Keywords: | Aphididae Homoptera plant volatiles repellent |