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1 June 2006 Effects of Cutting Date, Outdoor Storage Conditions, and Splitting on Survival of Agrilus planipennis (Coleoptera: Buprestidae) in Firewood Logs
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Abstract

The emerald ash borer Agrilus planipennis Fairmaire (Coleoptera: Buprestidae) is an exotic pest of ash (Fraxinus spp.) in North America. We conducted studies in Michigan to evaluate how different tree cutting dates, outdoor storage conditions, and splitting affected A. planipennis survival in firewood logs. In 2002–2003, we cut logs from A. planipennis-infested ash trees each month, from July to October, and stored half of the logs in shade and half in full sun. In 2003–2004, we tested logs cut July–December; stored in sun versus shade; tarped versus untarped; and whole logs versus split logs. For both years, A. planipennis successfully emerged the summer after cutting from logs that represented all treatments and all cutting dates tested. Adult emergence density was significantly lower in logs cut in July and August. In 2003–2004, A. planipennis adult length was significantly shorter, and percentage of mortality was significantly higher for logs cut in August compared with later months. Emergence density was significantly lower for split logs compared with whole logs for all cutting months except for December. There was no significant difference in adult emergence density between logs stored in full sun versus shade in 2002–2003. In 2003–2004, untarped logs in full sun or shade had significantly lower adult emergence densities than tarped logs in the sun or shade. In conclusion, emergence, survival, and size of A. planipennis was significantly reduced if logs were cut early during larval development (July or August); splitting logs and storing them untarped in full sun or shade further reduced adult emergence. No treatment was 100% effective in preventing adult emergence.

Toby R. Petrice and Robert A. Haack "Effects of Cutting Date, Outdoor Storage Conditions, and Splitting on Survival of Agrilus planipennis (Coleoptera: Buprestidae) in Firewood Logs," Journal of Economic Entomology 99(3), 790-796, (1 June 2006). https://doi.org/10.1603/0022-0493-99.3.790
Received: 9 November 2005; Accepted: 1 February 2006; Published: 1 June 2006
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