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Biological Control Update Glen Ball USDA, APHIS, PPQ Yuma, Arizona - PowerPoint PPT Presentation

United States Department of Agriculture Animal and Plant Health Inspection Service Plant Protection and Quarantine Giant Salvinia Biological Control Update Glen Ball USDA, APHIS, PPQ Yuma, Arizona United States Department of Agriculture


  1. United States Department of Agriculture Animal and Plant Health Inspection Service Plant Protection and Quarantine Giant Salvinia Biological Control Update Glen Ball USDA, APHIS, PPQ Yuma, Arizona

  2. United States Department of Agriculture Animal and Plant Health Inspection Service Plant Protection and Quarantine Classical biological control Weed population/impacts Release of CBC agent(s) OLD POP’N EQUILIBRIUM (Damage threshold) NEW POP’N EQUILIBRIUM Introduction of pest Time (from Hansen 2007, USDA, APHIS, CPHST)

  3. United States Department of Agriculture Animal and Plant Health Inspection Service Plant Protection and Quarantine Annual Totals of Cyrtobagous salvinia Released on the Lower Colorado River 100000 90000 86558 Estimated # Individuals Released 80000 70000 60000 50000 40000 30000 21933 18963 20000 10000 4500 3500 3470 3247 1248 0 0 2003 2004 2005 2006 2007 2008 2009 2010 2011 Year

  4. United States Department of Agriculture Animal and Plant Health Inspection Service Plant Protection and Quarantine

  5. United States Department of Agriculture Animal and Plant Health Inspection Service Plant Protection and Quarantine

  6. United States Department of Agriculture Animal and Plant Health Inspection Service Plant Protection and Quarantine River mile 33 August of 2004. August 2007 River mile 33 in summer of 2005. Salvinia population infested with Cyrtobagous salvinia. Notice the brown coloration from decaying plant biomass.

  7. United States Department of Agriculture August 2007 Animal and Plant Health Inspection Service Plant Protection and Quarantine August 2004

  8. United States Department of Agriculture Animal and Plant Health Inspection Service Plant Protection and Quarantine

  9. United States Department of Agriculture Animal and Plant Health Inspection Service Plant Protection and Quarantine Davis Lake August 2011

  10. United States Department of Agriculture Animal and Plant Health Inspection Service Plant Protection and Quarantine Mitchell’s Camp South N33.27245, W-114.67895 August 17, 2011

  11. United States Department of Agriculture Animal and Plant Health Inspection Service Plant Protection and Quarantine River Mile 31 July 2011

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