Topic > The effects of citrus canker and citrus greening on…

For Florida citrus growers, the future is uncertain. Two bacterial diseases, called citrus canker and citrus greening disease, have devastated countless acres of trees across the state. For an industry that “generates approximately $8.9 billion annually,” this is no small issue (“Citrus Greening”). The Florida Citrus Grower's Association would like to import a landrace variety of orange discovered in China that is resistant to citrus greening disease and test it in Florida to discover its effects on both citrus canker and greening. While there are benefits to importing a resistant form of citrus, the risks far outweigh the potential benefits and, for this reason, the Association should begin to focus its efforts on the many alternative control methods available. Citrus canker has caused Florida growers to worry for nearly a hundred years. The bacterium Xanthomonas axonopodis pv. citri, arrived in the United States from Southeast Asia in the early 1900s. In 1933, after much effort and the destruction of thousands of infected trees, citrus canker was eradicated. However, another strain of canker appeared in 1995. Although the state made exhaustive efforts, a strong hurricane season in 2004 spread the disease further, and as a result, citrus canker was declared non-eradicable in 2006 and is now considered endemic to the country. Florida (Schumann and D'Arcy 88). Citrus canker spreads primarily through wind and rain, but can also be spread by contaminated people or equipment and by transportation of infected trees. Infected trees can be identified by raised cankers on leaves, stems and fruit. Although cankers generally do not penetrate the peel of the orange, the disease makes the... center of paper......y. “Integrated approaches for management of the Asian citrus psyllid Diaphorina citri (Homoptera: Psyllidae) in Florida.” University of Florida: IFAS. Np, 2007. Web. 5 Dec 2013. .Santa Ana, auction. “Spinach Genes May Stop Deadly Citrus Disease.” AgriLife today. Texas A&M AgriLife, March 26, 2012. Web. December 5, 2013. .Schumann, Gail L., and Cleora J. D'Arcy. Hungry Planet: Stories of Plant Diseases. St. Paul: American Phytopathological Society, 2012. Print.Stover, Ed, William S. Castle, and Peter Spyke. “The citrus orchard of the future and its implications for the management of Huanglongbing.” University of Florida: IFAS. Np, nd Web. 5 December 2013. .