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Funded Project |
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Funding Program:
Regional IPM Grants (S-RIPM) |
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Project Title:
Filling the growers` toolbox: Near and mid term management strategies for Drosophila suzukii in southeastern berry crops |
Project Directors (PDs):
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Lead State: NC Lead Organization: North Carolina State University |
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Cooperating State(s):
North Carolina |
| Research Funding: $142,811 |
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Start Date: Sep-01-2013 End Date: Aug-31-2015 |
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Pests Involved: SWD |
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Site/Commodity: fruit |
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Area of Emphasis: entomology |
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Summary:
Spotted wing drosophila (Drosophila suzukii, SWD) is a devastating invasive pest of soft skinned fruits which has dramatically expanded its range globally and throughout the United States beginning in 2008 when it was first detected damaging raspberries and cherries in California. SWD has since been confirmed from 38 states in the continental US and 14 countries since these initial observations. This recent range expansion has resulted in significant losses in crop yield and quality and risk of even more profound damage. Berries crops (e.g. caneberries, blueberries, and strawberries) and stone fruits (e.g. cherries) crops have been the most significantly impacted by SWD globally. Potential losses due to SWD in these crops in states participating in a Southern IPM Center sponsored SWD working group, eFly, have been estimated at $207 million annually. Actual loss statistics have been difficult to generate, but losses in eastern US grown blueberries, caneberries, and strawberries during 2012 were estimated between $45 and $55 million, the vast majority of which was direct crop loss. SWD management is currently achieved primarily through preventative insecticide applications. The suite of insecticides available is limited to those with SWD activity and sufficiently short preharvest intervals to allow their use on frequently picked crops. Despite the reliance on pesticides to manage SWD, practical information about how these materials should be used is lacking. In order to prevent detectable infestation for the entire growing season, multiple active ingredients are necessary, both to minimize risks of resistance development and to comply with seasonal usage restrictions on effective materials. However, current research on insecticide efficacy against SWD or on pesticide residues associated with these materials focused on single active ingredients. Our project is designed to address a key question asked by growers regarding SWD management. What combination or program of insecticides is most
effective in reducing SWD infestation and will cause the least additional problems (pesticide residues, increase in production costs, and non target beneficial and pest impacts)? Objectives: Objective 1. Compare the efficacy of season long SWD management programs Objective 2. Measure potential risks associated with season long SWD management programs Objective 3. Assess the efficacy of novel management strategies for reducing SWD infestation |
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