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Citrus Greening Continues To Spread In Citrus Growing Areas

Date:
July 13, 2007
Source:
American Phytopathological Society
Summary:
The latest on the rapid spread of citrus greening within Florida and its potential to spread into California and other citrus growing areas will be presented during a news conference on plant diseases and issues that are of importance to California's economy and agriculture.

Citrus greening is considered one of the most serious threats to oranges (shown above) and other citrus plants.
Credit: Photo by Scott Bauer / Courtesy of USDA-ARS

The latest on the rapid spread of citrus greening within Florida and its potential to spread into California and other citrus growing areas will be presented during a news conference on plant diseases and issues that are of importance to California's economy and agriculture.

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Citrus greening or huanglongbing (yellow shoot) is considered one of the most serious threats to the citrus industry. A bacterial disease, citrus greening affects all types of citrus species and causes infected trees to yellow, decline, and possibly die within a few years of infection. Spread by an insect, the Asian citrus psyllid, citrus greening has significantly impacted citrus production in Asia, Africa, and Brazil.

"The threat of this disease spreading to other citrus-growing states definitely exists, especially in places where the Asian citrus psyllid is already found," said Ronald Brlansky, plant pathologist at the University of Florida, Citrus Research and Education Center. In California, researchers are continually looking for evidence of the citrus psyllid. If it is found there, citrus trees will need to be closely monitored for disease symptoms.

Citrus greening can only be managed, not completely controlled. By reducing the psyllid population through the use of insecticides, the spread of the disease may be lessened. Growers are urged to become familiar with the symptoms of huanglongbing, to scout for the symptoms and to send in samples for testing.

Citrus greening has spread from eight to 23 counties since it was first found in Florida just a little more than a year and a half ago. Once citrus trees are infected, the fruit yield, rate, and quality are greatly reduced. The trees also become susceptible to other diseases and health problems. In some areas of Brazil, citrus greening has affected as much as 70 percent of the fruit rate and yield.

The research will be presented at a conference during the joint meeting of The American Phytopathological Society and the Society of Nematologists that runs July 28-Aug. 1, 2007.


Story Source:

The above story is based on materials provided by American Phytopathological Society. Note: Materials may be edited for content and length.


Cite This Page:

American Phytopathological Society. "Citrus Greening Continues To Spread In Citrus Growing Areas." ScienceDaily. ScienceDaily, 13 July 2007. <www.sciencedaily.com/releases/2007/07/070711001507.htm>.
American Phytopathological Society. (2007, July 13). Citrus Greening Continues To Spread In Citrus Growing Areas. ScienceDaily. Retrieved October 25, 2014 from www.sciencedaily.com/releases/2007/07/070711001507.htm
American Phytopathological Society. "Citrus Greening Continues To Spread In Citrus Growing Areas." ScienceDaily. www.sciencedaily.com/releases/2007/07/070711001507.htm (accessed October 25, 2014).

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