2008 May 27-30 Weeds Across Borders Conference Banff, Alberta, Canada   May 04-08 18th Congress of the Latin American Weed Science Society (ALAM) Belo Horionte, Brazil   June 23-26 5th International Weed Science Congress Vancouver, BC, Canada   July 13-16 Aquatic Plant Management Society Annual Meeting Charleston, South Carolina   September 10-13 First International Ragweed Conference Budapest, Hungary   September 21-25 5th World Congress on Allelopathy Saratoga Springs, New York   October 05-09 American Society of Agronomy Crop Science Society of America Soil Science Society of America Joint Annual Meeting Houston, Texas - joint meeting with the Geological Society of America   December 08-11 North Central Weed Science Society Annual Meeting Indianapolis, Indiana 2009 February 9-12 Weed Science Society of America and Southern Weed Science Society Joint Annual Meeting Orlando, Florida   March 24-26 6th International IPM Conference Portland, Oregon   June 8-11 4th International Plant Dormancy Symposium Fargo, North Dakota   November 01-05 American Society of Agronomy Crop Science Society of America Soil Science Society of America Joint Annual Meeting Pittsburgh, Pennsylvania 2010 Oct 31 - Nov 4 American Society of Agronomy Crop Science Society of America Soil Science Society of America Joint Annual Meeting Long Beach, California