Preventative measures: The best preventive measure is to catch the infection early before it spreads extensively. Gabriel (2002), however, points out that because of increasing levels of international travel, and in spite of rigorous quarantine measures, the disease is likely to be reintroduced into citrus orchards repeatedly because of people inadvertently bringing infected citrus fruits and seedlings to uninfected places.
Physical: According to Gabriel (2002), X. axonopodis pv.citri' distribution and survivability is strongly influenced by the ecological conditions surrounding its host. The Asian citrus leaf miner (Phyllocnistis citrella), an invasive in Florida, increases the spread of X. axonopodis pv.citri by exposing the disease for easier spread by wind and rainfall. FDACS (2002) states that no chemical compound is known to destroy the bacteria within the plant tissue. So in order to eradicate the disease, the infected and exposed trees must be cut down and disposed of properly. When an infected tree is found, all trees within 1,900 feet of it must also be cut down. Researchers determined that approximately 95% of the trees that became diseased were up to 1,900 feet away from a single disease-positive tree.
The American Phytopathological Society (APS) offers on its website illustrated lessons to introduce the symptoms and signs, pathogen biology, disease cycle, epidemiology, disease management, and scientific, economic and social significance of major plant diseases. Please follow this link
Citrus canker for details.
3. Gottwald, T.R. 2000. Citrus canker. The Plant Health Instructor.DOI: 10.1094/PHI-I-2000-1002-01
Summary: The American Phytopathological Society (APS) offers on its website illustrated lessons to introduce the symptoms and signs, pathogen biology, disease cycle, epidemiology, disease management, and scientific, economic and social significance of major plant diseases. The website will also offer basic information on the history, biology, survival, dissemination, host-parasite interactions, epidemiology and management of the major groups of plant pathogens. This section is in development.
APS Introductory Plant Pathology Resources is available from http://www.apsnet.org/education/IntroPlantPath/top.html. This page is available from: http://www.apsnet.org/education/LessonsPlantPath/CitrusCanker/default.htm [Accessed 7 November 2006]
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