Weathered Wood Logs in the Road Chopped Firewood

ANNOTATED FIREWOOD LITERATURE SUMMARY

  • National firewood task force recommendations. March 2010.

    • National Plant Board
    • 2010
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  • Resolution No. 2: National strategy for mitigation of risks associated with the movement of firewood. National Plant Board, August 22, 2007.

    • National Plant Board
    • 2007
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  • Firewood use in Wisconsin state parks and forests: 2006 and 2008. Research/Management Findings. Wisconsin Department of Natural Resources 61.

    • Peterson, K.
    • Nelson, E.B.
    • 2009
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  • 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.

    • Petrice, K.
    • Haack, R.A.
    • 2006

    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 2002Ð2003, 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.

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  • Can Emerald Ash Borer, Agrilus planipennis (Coleoptera: Buprestidae), Emerge From Logs Two Summers After Infested Trees are Cut? The Great Lakes Entomologist Vol. 40(1/2): 92-95.

    • Petrice, K.
    • Haack, R.A.
    • 2007

    Emerald ash borer (EAB), Agrilus planipennis Fairmaire (Coleoptera: Buprestidae), is a serious invasive pest of ash trees (Fraxinus spp.) in North America. Much of EAB’s range expansion has been attributed to human-assisted movement of infested items such as ash logs and firewood. It is unclear the amount of time that logs cut from live EAB-infested ash trees should be restricted from movement until they are no longer capable of producing viable EAB adults. In March and April 2004, we cut log sections from EAB-infested green ash (F. pennsylvanica Marsh) trees in Ann Arbor, Washtenaw County, Michigan. Log sections (mean length = 24.8 cm; diam. = 11.6 cm) were stood upright on one cut end and stored beneath a hardwood forest canopy. Adult EAB were allowed to freely emerge from log sections during summer 2004. When logs were dissected in November 2004 to January 2005, approximately one half of the total EAB life stages that were present in the logs were dead, while the other half either emerged as adults in summer 2004 or were live prepupae. Also, adults emerged from a subset of these log sections when reared in the laboratory in January to February 2005. These data suggest that EAB adults can emerge from logs for two successive emergence periods after infested ash trees have been cut.

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