Home Tag Archives: Huanglongbing

Tag Archives: Huanglongbing


Citrus Research Board Quantifies Industry Importance     The total economic impact of California’s iconic citrus industry is $7.117 billion according to a new study commissioned by the Citrus Research Board (CRB). “In updating our economic analysis, we selected a well-known expert, Bruce Babcock, Ph.D., a professor in the School of Public Policy at the University of California, Riverside, to …

Statewide Citrus Grower Approaches for Controlling ACP & HLB

The deadly HLB spreading asian citrus psyllid (ACP) continues to make its way through citrus orchards all over California, and the industry is going to need to work together to slow the spread of this pest to buy researchers sufficient time to come up with a solution for HLB. Watch this brief interview with UC Entomologist Beth Grafton-Cardwell as she …

Microbial Community in Citrus is key to HLB Early Detection Technology

The bacterial causing agent of Huanglongbing (HLB), the deadly citrus greening disease threatening CA citrus production, is known as Candidatus Liberibacter asiaticus (CLas). Researchers looking into the change in the microbial community of a citrus tree when CLas takes over can help the industry develop effective early detection technology for HLB when it hits the orchard, according to plant pathologist …

Quarantine For Citrus Disease Huanglongbing Extends To Portions Of Riverside And San Bernardino Counties

Asian citrus physllid Huanglongbing

Sacramento, Calif., (August 31, 2017) – The California Department of Food and Agriculture (CDFA) and the United States Department of Agriculture (USDA) have established a 94-square mile quarantine in portions of Riverside and San Bernardino counties following the detection of the citrus disease huanglongbing (HLB), or citrus greening, in a single citrus tree in the city of Riverside. HLB is …

How to Check Your Citrus Trees for a Deadly Disease and the Pest that Spreads It

Riverside, Calif., (August 4, 2017) – The incurable citrus tree disease huanglongbing, or HLB, has been detected in Los Angeles and Orange counties and most recently in Riverside. The citrus disease is spread from tree to tree by Asian citrus psyllids, the insects that move the bacteria that cause huanglongbing. Citrus trees infected with huanglongbing develop mottled leaves and produce fruit that is …

UC has Boots on the Ground in an Unrelenting Search for Asian Citrus Psyllid

Asian citrus physllid Huanglongbing

Ventura, Calif., (August 3, 2017) – With two magnifying loops around her neck and a truck stocked with vials and tools for insect collection, Joanne O’Sullivan scouts Ventura County citrus orchards every day. She walks the perimeter, examining newly emerging leaves and tapping branches with a PVC wand to bat pests onto her clipboard. O’Sullivan is one of four scouts …

HLB Detected on Residential Property in Riverside

Asian citrus physllid Huanglongbing

The California Department of Food and Agriculture (CDFA) and the United States Department of Agriculture (USDA) have confirmed the detection of the citrus disease known as Huanglongbing (HLB), or citrus greening, in Riverside County. The disease was detected in plant material taken from a grapefruit tree in a residential neighborhood in the city of Riverside near I-215. The infected tree …

Agricultural Officials Taking Steps to Battle Citrus Disease Recently Detected in Riverside

Asian citrus physllid Huanglongbing

Riverside, Calif., (July 27, 2017) – State and federal officials yesterday (7/25) confirmed the presence in Riverside County of citrus greening, a deadly disease for citrus plants that can be transmitted from tree to tree by the Asian citrus psyllid. The California Department of Food and Agriculture (CDFA) and the United States Department of Agriculture (USDA) confirmed the discovery of …

Citrus Growers Reaffirm Support For State’s Citrus Pest & Disease Prevention Program

Sacramento, Calif., (July 25, 2017) – California growers have affirmed the extension of a cooperative effort in response to the most serious threat to the state’s citrus crops.  Years before the discovery of the citrus pest the Asian citrus psyllid (ACP) in California in 2008 and the subsequent detection in 2012 of Huanglongbing (HLB), the disease spread by the ACP, …

Citrus Farmers Bracing To Battle Huanglongbing

Asian citrus physllid Huanglongbing

Exeter, Calif., (June 29, 2017) – Two more trees infected with huanglongbing (HLB) disease were identified and destroyed in the days before UC Cooperative Extension and the Citrus Research Board kicked off their spring Citrus Growers Education Seminar in Exeter June 27. The new infections raise the total number of HLB-infected trees in Los Angeles and Orange counties to 73. The latest statistic …

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