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  • Irrigation water may ice some flowers, but help protect flowers in the upper canopy from frost damage. Photo by Allen Vizcarra
    Climate change may reduce frost damage to orchard crops

    Jan 23, 2023

    • Agriculture
  • David Haviland sharing his research at the Argentine Ant and Citrus Pest Management Field Day in Redlands in October 2022. All photos by Saoimanu Sope.
    UCCE researchers target sugar-feeding ants, a key to controlling citrus pests, disease

    Jan 9, 2023

    • Innovation
    • Pest Management
  • The Asian citrus psyllid is the insect vector for the bacterium that can cause huanglongbing disease. Photo credit: UC Regents
    Asian citrus psyllid study: Vigilance urged but ‘no cause for panic’

    Nov 17, 2022

    • Agriculture
    • Food
    • Pest Management
  • German Rafael Villalba-Salazar, nursery technician, harvesting budwood from mother citrus trees at the UC Citrus Clonal Protection Program facility. Photo by Stan Lim, UC Riverside
    You, too, can grow California’s oldest living orange variety

    Jun 9, 2022

    • Agriculture
    • Food
  • This tree in Florida shows symptoms of huanglongbing (HLB) disease, including a thinning canopy and fruits that fall easily. HLB has devastated the citrus industry in Florida, and poses a threat to California growers. Photo: UC Regents
    Citrus threat target of $7 million multistate research project

    Dec 3, 2021

    • Agriculture
    • Food
    • Innovation
    • Pest Management
  • John Pehrson poses outside UC Lindcove Research and Extension Center's John E. Pehrson Hall, dedicated in his honor.
    Citrus industry honors longtime UCCE citrus expert John Pehrson

    Oct 29, 2021

    • Agriculture
  • Orange marmalade ready for freezing or water bath canning. (Photo: Wikimedia Commons)
    Preserving and eating citrus peels and watermelon rind

    Feb 9, 2021

    • Food
  • The two red-outlined areas show the ACP and HLB quarantine areas in Southern California. (Screen shot taken Aug. 13, 2020. For updated information, see https://ucanr.edu/sites/ACP/Distribution_of_ACP_in_California/)
    Asian citrus psyllid infected with huanglongbing disease found in Riverside citrus grove

    Aug 13, 2020

    • Agriculture
  • Citrus leaves exhibiting symptoms of huanglongbing infection.
    UC Riverside researcher discovers first effective treatment for citrus-destroying disease

    Jul 7, 2020

    • Agriculture
  • Go to http://ucanr.edu/hlbapp to find out how close you live to citrus that were infected with HLB.
    Consult UC ANR's map to see how close you live to citrus with HLB disease

    Apr 27, 2020

    • Yard & Garden
  • Jean Suan harvests persimmons, fruit that is easy to grow and creates a beautiful landscape display.
    Planting alternative backyard fruit trees in Southern California can help stop citrus threat

    Sep 9, 2019

    • Food
    • Yard & Garden
  • Georgios Vidalakis, left, and UC Riverside plant pathologist Wenbo Ma are among scientists searching for an HLB cure. (Photo: UCR Today)
    Screen installed over the 'parent navel' in Riverside to protect it from disease

    Jun 12, 2019

    • Pest Management
  • A symptom of HLB in citrus is the yellowing of leaves on an individual limb or in one sector of a tree's canopy. (Photo: Citrus Pest and Disease Prevention Program)
    Huanglongbing is a growing threat to California’s citrus industry

    May 31, 2019

    • Pest Management
  • The Riverside Washington Navel tree surrounded by open fencing in this 1932 picture. View the Riverside Press-Enterprise to see a photo of the large steel structure that now looms over the tree. (Photo: Department of Interior)
    Riverside Washington Navel gets additional protection

    Apr 16, 2019

    • Agriculture
  • USDA technician Paul Neipp presents a tray for lemon water tasting in one of the sensory lab booths.
    Lemon water tasting at UC research center kicks off an 18-month citrus sensory study

    Dec 7, 2018

    • Food
  • November News Clips (11/15-11/30)

    Dec 3, 2018

  • CRB chairman Dave Dreyer presents a giant check to UC Agriculture and Natural Resources representatives, left to right, LREC director Beth Grafton-Cardwell, associate vice president Tu Tran, UC ANR director of major gifts Greg Gibbs, and UCCE plant pathology specialist Georgios Vidalakis.
    The Citrus Research Board and UC create a $1 million endowment for citrus research

    Oct 22, 2018

    • Agriculture
  • The USDA has trained dogs to detect huanglongbing disease in Florida. (Photo: USDA)
    Dogs enlisted to sniff out disease in citrus trees

    Sep 18, 2018

    • Pest Management
  • Mottling and yellowing of leaves is a symptom of huanglongbing disease in a citrus tree. HLB is incurable and the tree will eventually die.
    Pesticide spray ban could assist spread of huanglongbing disease

    Mar 2, 2018

    • Agriculture
  • There is no known treatment for huanglongbing, which kills citrus trees.
    How to check your citrus trees for a deadly disease and the pest that spreads it

    Jul 28, 2017

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