Control of spotted wing drosophila,Drosophila suzukii,by specific insecticides and by conventional and organic crop protection programs |
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| Affiliation: | 1. Research and Innovation Centre and Technology Transfer Centre, Fondazione Edmund Mach, Via Edmund Mach 1, 38010 San Michele all’Adige (TN), Italy;2. Systematic Entomology Laboratory, MRC-168, NMNH, P.O. Box 37012, Washington, D.C., USA;3. Department of Environmental Science, Policy and Management, University of California, Berkeley, CA 94720, USA;4. Department of Horticulture, Oregon State University, Corvallis, OR 97331, USA;5. Faculty of Agriculture and Natural Sciences, Abant Izzet Baysal University, 14280 Bolu, Turkey;6. Plant Protection in Organic Agriculture, Mediterranean Agronomic Institute of Bari, CIHEAM, Via Ceglie 9, 70010 Valenzano (BA), Italy;1. Summerland Research and Development Centre, Agriculture and Agri-Food Canada, 4200 Hwy 97, Summerland, BC V0H 1Z0, Canada;2. Vineland Research and Innovation Centre, 4890 Victoria Avenue North, Box 4000, Vineland Station, ON L0R 2E0, Canada;1. School of Environmental Science, University of Guelph, Guelph, Ontario N1G 2W1, Canada;2. Department of Mathematics and Computer Science, Laurentian University, Sudbury, Ontario P3E 2C6, Canada;3. Department of Integrative Biology, University of Guelph, Guelph, Ontario N1G 2W1, Canada;1. NIAB EMR, New Road, East Malling, Kent, ME19 6BJ, UK;2. University of Southampton, Highfield, Southampton, SO17 1BJ, UK |
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| Abstract: | Spotted wing drosophila, Drosophila suzukii, is an invasive insect pest that has spread into many fruit production regions of the world. Strategies to protect fruit from infestation by this insect are currently dominated by insecticide applications, so producers need information on relative efficacy and residual activity of insecticides to be able to select effective treatments. Semi-field bioassays in which highbush blueberry shoots with berries were treated then exposed to adult flies at different times after application revealed that fresh residues of organophosphate, pyrethroid, and spinosyn insecticides have strong initial activity on flies, with varying levels of residual protection against fruit infestation. An organic pyrethrum insecticide was not effective, whereas the neonicotinoid insecticide acetamiprid was found to have activity for up to five days. Rainfall after application greatly reduced the level of control achieved by some insecticides. Field-scale evaluation of conventional and organic spray programs initiated in response to capture of D. suzukii flies in monitoring traps indicated that both types of management provide significant fruit protection compared to untreated fields, with less larval detection in the conventionally-produced berries. |
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| Keywords: | Invasive species Residual control Rain Infestation Vinegar fly |
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