SAN DIEGO COUNTY - FARM & HOME ADVISOR
University of California
SAN DIEGO COUNTY - FARM & HOME ADVISOR

Cultivating Solutions Through Cooperation

HLB - Potential Threat Near San Diego County

HLB detected in Riverside County:

http://www.pe.com/2017/07/26/killer-citrus-disease-huanglongbing-found-in-grapefruit-tree-at-riverside-residence/ 

The Asian citrus psyllid is a tiny, mottled brown insect about the size of an aphid that poses a serious threat to all of California's varieties of citrus (e.g., oranges, grapefruit, lemons, and mandarins).

Asian_citrus_psyllid_D._citri_adult
 

The insect is associated with the fatal citrus disease Huanglongbing (HLB), also called citrus greening disease. The psyllid takes the bacteria into its body when it feeds on bacteria-infected plants and spreads when a bacteria-carrying psyllid flies to a healthy plant and injects bacteria into it as it feeds.

HLB can kill a citrus tree in as little as five years, and there is no known cure. All commonly grown citrus varieties are susceptible to the disease.

The only way to protect trees is to prevent spread of the HLB pathogen in the first place, by controlling psyllid populations and removing and destroying any infected trees.

Learn more about HLB and how to protect your crops from it by following these links. 

LINKS:

News Stories:http://www.pe.com/2017/07/26/killer-citrus-disease-huanglongbing-found-in-grapefruit-tree-at-riverside-residence/

https://www.cacitrusmutual.com/hlb-detection-riverside-triggers-rapid-response-activities/ 

Distribution & Management: http://ucanr.edu/sites/ACP/ 

IPM Blog: http://ucanr.edu/sites/socalIPM/?blogpost=24776&blogasset=63455 

IPM Pest Noteshttp://ipm.ucanr.edu/PMG/PESTNOTES/pn74155.html 

California Citrus Pest & Disease Prevention Committee:  https://www.cdfa.ca.gov/citruscommittee/ 

http://www.californiacitrusthreat.org 

Meet the staff

James A. Bethke is the County Director and Floriculture and Nursery Farm Advisor. He received his Master of Science degree in Entomology from UC Riverside in 1985. Currently he is working on several research projects to address the serious impacts on the ornamental industry due to a series of invasive pests.

James A Bethke

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