Professional Society Offices Held
- Chair, Soil Science Society of America, Division S-7, Forest and Range Soils, 1996.
- Board of Directors, Soil Science Society of America, 2003-2006
- President-Elect/President/Past President, Soil Science Society of America, 2009-2011
- Chairman, American Society of Agronomy - C456 NCCPB Genetics and Plant Breeding Ward, 2005
- Crop Germplasm Advisory Committee, National Plant Germplasm System (NPGS)(CGC) - Grasses, 2000-present
- Chairman, Southern Pastures and Forage Crop Improvement Conference (SPFCIC), 2007
- Executive Committee Member, SPFCIC - Southern Pastures Forage Workshop, 2002-2006
- Chairman, SPFCIC Southern Pastures Forage Breeder's Workshop, 2003-2004
- Program Chairman, SPFCIC Southern Pastures Forage Breeder's Workshop, 2001-2002
- Secretary, SPFCIC Southern Forage Breeders Group, 2001-2002
- President, Entomological Society, 1998
- Vice President, Entomological Society, 1997
- Program Chair, Florida Entomological Society, 1996
- Executive Committee Member, 2004 AM/PIC National Association of County Agricultural Agents Meeting, 2004
- Past President, President, Vice President, Florida Association of County Agricultural Agents, 2000-2003
- Board of Directors, Florida Association of County Agricultural Agents, 1999-2003
- Chairman of the Board, Florida Association of Extension Professionals, 2002-2003
- Delegation Coordinator, PILD Conference in Washington DC, Florida Association of Extension Professionals, 2003
- Chair, Council of Presidents, Florida Association of Extension Professionals, 2002-2003
- Secretary, Florida Association of Extension Professionals, 2001-2002
- Co-Chair, Annual Meeting Planning Committee, Florida Association of Extension Professionals, 2002
- Director, American Society for Plasticulture, 1999-2002
- Chair, Awards Committee, American Society for Plasticulture, 2001
- Host Chairman, Annual Congress Planning Committee, American Society for Plasticulture, 1999
- Secretary, Florida Council of Presidents, 2001
- Board of Directors, Florida State Horticultural Society, 1998
- Executive Committee, International Plant Propagators' Society, Southern Region of North America, 2006-2007
- Governing Board, Magnolia Society International, 2006-present
- Chair and Member, American Phytopathological Society Soil Microbiology Committee
- Chair, American Phytopathological Society ad hoc Committee "Review of American Phytopathological Society Publications"
- Exobiology Committee, Member American Phytopathological Society
- Journals Working Group, Member American Phytopathological Society ad hoc examingin online publication for American Phytopathological Society Journals
- Technical Committee, American Phytopathological Society Soybean Rust Symposium
- Program Chair, Vice Present, President, Florida Entomological Society, 1993-1995
- Foundation Treasurer, Organization of Nematologists of Tropical America (ONTA), 1994-2009
- Board of Directors, Organization of Nematologists of Tropical America (ONTA), 1988-2008
- Nominations Committee Chairman, Organization of Nematologists of Tropical America (ONTA),1995-2008
- Web Manager and Committee Chair, Organization of Nematologists of Tropical America (ONTA),1993-2008
- Organizing Committee Member, Fifth International Symposium of Plant Protection, Cuba 2003-2004
- Plant Resistance Committee Member, Society of Nematologists, 2000-2003
- Caribbean Division Awards Committee Member, American Phytopathological Society, 1999
- Audit Committee Chairman, Soil and Crop Science Society of Florida, 2000, Member 1998-1999
- Foundation Committee Member, Society of Nematologists, 1998-1999
- Board of Directors, Soil and Crop Science Society of Florida, 1996-1998
- Constitution Revision Committee Chairman, Organization of Nematologists of Tropical American (ONTA), 1196-1997
- Treasurer, Third International Congress of Nematology Organizing Committee, Guadeloupe F.W.I., 1994-1996
- Newsletter Editor, Organization of Nematologists of Tropical America (ONTA), 1990-1993
- President, Organization of Nematologists of Tropical America (ONTA), 1987-1988
- Vice President, Organization of Nematologists of Tropical America (ONTA), 1986-1987
- Program Chair, Southern Conservation Agricultural Systems Conference, 2007
- Chair, SERA-IEG 11, 1998
- Vice Chair and Program Chair, SERA-IEG 11, 1997
- Co-Chair of Southern Conservation Tillage Conference, Gainesville FL, 1997
- Chairman Agricultural Section, Florida Academy of Science, 1995-1996
- President, Soil and Crop Science Society of Florida, 1995
- President Elect and Program Chair, Soil and Crop Science Society of Florida, 1994
- Chair, Southern Regional Tropical Corn Symposium, 1991
- Chair, Southern Conservation Tillage Conference Annual Meeting, 1989