Since 2006, the bacterial disease citrus greening has cost Florida’s economy an estimated $3.636 billion in lost revenues and 6,611 jobs by reducing orange juice production, according to the study reported in this 5-page fact sheet written by Alan W. Hodges and Thomas H. Spreen and published by the UF Department of Food and Resource Economics, January 2012.
http://edis.ifas.ufl.edu/fe903
UF/IFAS press release: http://news.ufl.edu/2012/01/24/greening-cost/