Credits contributors to the Florida Citrus Rootstock Selection Guide, 3rd Edition

These individuals developed or contributed to the rootstock selection guide (

  • William S. Castle, professor emeritus, horticulture, University of Florida, IFAS, Citrus Research and Education Center [CREC], Lake Alfred.  Dr. Castle spent most of his 35-year career as a member of the plant improvement team with responsibilities for the development and field evaluation of citrus scions and rootstocks.  That experience led to his being the primary author on the first two editions of the Florida Citrus Rootstock Selection Guide. 
  • Kim D. Bowman, research geneticist and lead scientist, USDA, ARS, U.S. Horticultural Research Laboratory, Fort Pierce, Florida since 1992.  Dr. Bowman released 4 new hybrid rootstocks from 2001 to 2010 that were used for about 22 percent of 2014-15 propagations, or more than 1,000,000 trees per year in Florida.  In 2014, he released five new hybrid rootstocks with improved tolerance to HLB.  Dr. Bowman has been the lead on research to examine tolerance to HLB in rootstocks and gene expression changes associated with disease development and the tolerance reaction, so far documented in six refereed publications. 
  • Jude W. Grosser, professor of citrus breeding and genetics, UF, IFAS, CREC.  Dr. Grosser has been a member of the CREC plant improvement team for 30 years, specializing in adapting emerging biotechnologies, especially ploidy manipulation, to facilitate citrus breeding.  Dr. Grosser works on the development of improved processing sweet oranges, seedless fresh fruit cultivars, rootstocks, and genetic engineering with emphasis on disease resistance.
  • Stephen H. Futch, multi-county extension agent.  Dr. Futch’s citrus career has spanned 40 plus years in Florida.  He has been an extension agent for the past 30 years and located at UF’s CREC since 1990.  He conducts educational programs and assists growers in the 4-county area of DeSoto, Hardee, Manatee and Sarasota which comprises approximately 25% of Florida’s citrus acreage.  In addition to educational programs, he conducts various production and weed control trials and has published more than 430 articles in trade magazines and Proceedings.
  • James H. Graham, professor of soil microbiology, UF, IFAS, CREC, studies root health of citrus trees affected by below-ground pathogens and pests and the systemic bacterial disease, huanglongbing (HLB, or citrus greening). He is active in interdisciplinary research programs across IFAS units, and among research agencies and industry groups worldwide.

These individuals designed and built the website.

  • Steven Rogers, at Ecostat, Inc., is a researcher, citrus grower and web services provider based in Florida. He received his Ph.D. in Plant Pathology from the University of California at Berkeley and did post-doctoral studies at the University of Florida.  Dr. Rogers is co-editor of Florida Citrus: A Comprehensive Guide. He also served as Scientific Coordinator of the Florida Citrus Production Research Advisory Council from 2004 to 2008. His commercial and research interests include data acquisition, analytics and artificial intelligence using cloud- and web-based systems. In the mid-1990s, his company designed and developed one of the first handheld PDA applications used in large-scale commercial agriculture. Dr. Rogers is based in Polk County, where he also works in his family’s citrus operation.
  • Andrew S. Persaud, web specialist with the University of Florida, IFAS, Citrus Research and Education Center.  With 20 years’ experience in web development, he is responsible for CREC web updates, videography, developing educational computer games and optimizing various CREC websites.  Andrew earned a B.S. from the City University of New York in 1999, majoring in information systems management/web development.

    The authors also wish to gratefully acknowledge the following colleagues who contributed significantly to the first two editions of this publication: Dr. Alfred H. Krezdorn [deceased], Dr. David P. H. Tucker and Mr. Charles O. Youtsey.

Privacy Policy | Regulations | 2015 © Rootstock Selection Guide