California Fruit and Vegetable

Category: Citrus

  • Fall CRB Citrus Webinar Series

    The Citrus Research Board (CRB) in coordination with the University of California Statewide Integrated Pest Management Program (UC IPM) is rolling out a new CRB Webinar Series, geared toward citrus growers and industry professionals. 

    The series will kick-off on Tuesday, September 29, 2020, with Dr. Roger Baldwin of UC Davis presenting “Control of Vertebrate Pests in Citrus”. Dr. Roger Baldwin will discuss how to manage vertebrate pests including ground squirrels, pocket gophers, voles and roof rats in citrus orchards. The presentation will cover a variety of IPM management tools including biocontrol, repellents, habitat modification, trapping, rodenticides and burrow fumigants.

    This webinar is currently pending approval for 1-hour of “Other” continuing education units from the California Department of Pesticide Regulation (CDPR) and 1-hour of “IPM” credits from the Certified Crop Adviser (CCA).

    To qualify for continuing education units, please use the following list of instructions:

    1Register and login separately with your own email address

    2Participate in the entire hour webinar session

    3Respond to the polls/knowledge checks as they come up

    4 (If the polls do not work properly on your device, use chat to submit your answers.)

    5Respond to the final survey at the end of the webinar session – please include your name, license number and email address

    Make sure you mark your calendars for the rest of the talks in the series.

    2020 Webinar Series Schedule

    Tuesday, September 29, 2020 

    Topic: Control of Vertebrate Pests in Citrus 

    Speaker: Roger Baldwin, Ph.D., UC Davis

    Continuing Education Units:  

    1-hour of “Other” from CDPR and

    1-hour of “IPM” from CCA are Pending Approval

    CLICK HERE TO REGISTER FOR

    DR. BALDWIN’S WEBINAR

    Thursday, October 8, 2020 

    Topic: Asian Citrus Psyllid Detection and IPM Strategies

    Speaker: Monique Rivera, Ph.D., UC Riverside

    Continuing Education Units:  

    CDPR and CCA Hours Pending Approval

    CLICK HERE TO REGISTER FOR

    DR. RIVERA’S WEBINAR

    Thursday, October 22, 2020

    Topic: Pre-and Post-Harvest Diseases in Citrus

    Speaker: James Adaskaveg, Ph.D., UC Riverside

    Continuing Education Units:  

    CDPR and CCA Hours Pending Approval

    CLICK HERE TO REGISTER FOR

    DR. ADASKAVEG’S WEBINAR

     

    Wednesday, November 4, 2020

    Topic: Citrus Root Health

    Speaker: Ashraf El-kereamy, Ph.D., UC Riverside

    Continuing Education Units:  

    CDPR and CCA Hours Pending Approval

    CLICK HERE TO REGISTER FOR

    DR. El-KEREAMY’S WEBINAR

     

    For more information, please contact 

    Petr Kosina, with UC IPM, at pkosina@ucanr.edu

  • Orange Peels Better Heart Health

    You’ve heard an apple a day keeps the doctor away. Now orange peels may improve your heart health.

    Yu Wang, an assistant professor of food science and human nutrition at the University of Florida Institute of Food and Agricultural Sciences, has been awarded a $500,000 grant from the U.S. Agriculture and Food Research Initiative, part of the USDA. With the award, Wang plans to lead a research team to ensure extracts from orange peels improve the gut’s ability to stave off fatty linings in your arteries.

    Recent research has shown that gut bacteria help develop cardiovascular disease. When they feed on certain nutrients during digestion, gut bacteria produce trimethylamine N-oxide (TMAO) as a byproduct. TMAO levels are powerful predictors of future cardiovascular disease, according to researchers at the Cleveland Clinic.

    Wang and her colleagues want to work on that gut bacteria. They will study how orange peels promote gut health and, therefore, overall human health.

    Americans generate about 5 million tons of orange peels a year, Wang said. Right now, the peels are mostly treated as waste, she said. But the Food and Drug Administration considers natural orange peel extracts safe for human consumption. So, Wang wants to put those peels to better use.

    “This research could be critical to enhancing the cardiovascular health of millions of people worldwide,” said Wang, a faculty member at the UF/IFAS Citrus Research and Education Center in Lake Alfred, Florida. “In addition to improving consumers’ health, our research results could provide additional economic returns, benefiting U.S. agriculture and food systems.”

    For the new UF/IFAS-led project, researchers hypothesize that orange peels will modify gut microbiota and help prevent atherosclerosis, a disease characterized by fatty deposits on the inner walls of arteries.

    When gut microbiota break down chemicals called choline and carnitine, the process eventually produces trimethylamine (TMA). Enzymes can then convert TMA into TMAO, Wang said.

    But orange peels contain components that interfere with TMA enzymes, Wang said. Researchers believe that action will help prevent atherosclerosis.

    To test these hypotheses, the researchers will combine animal studies with enzyme tests to assess how orange peel extract consumption can prevent cardiovascular diseases.

    In her own preliminary work, Wang experimented with three groups of mice to see if she was going in the right direction with her research proposal. One group was fed a regular diet, the second was fed a regular diet plus carnitine, which induced TMAO. The third group was fed a regular diet, carnitine and orange peels.

    They found the orange peels altered the composition of bacteria in colon in the mice fed with regular diet, carnitine and orange peels.

    “Within three years, we expect to understand more about the mechanisms associated with orange peel consumption, TMAO formation and the prevention of atherosclerosis,” Wang said. “We hope this project can not only positively impact human cardiovascular health via the promotion of gut health, but will also provide a simple and effective usage of the orange peel.”— By Brad Buck, University of Florida Institute of Food & Ag Sciences

  • New Targets for Huanglongbing Treatments

    Scientists are closer to gaining the upper hand on a disease that has wiped out citrus orchards across the globe. New models of the bacterium linked to the disease reveal control methods that were previously unavailable.

    Metabolic models of organisms are like road maps of cities. “They show you all the biological processes, and how they work together,” said UC Riverside microbiology professor James Borneman. “They also show you which molecular pathways, if blocked, will kill the organism.” 

    Simplified metabolic model and its striking similarity to a road map. (Metallo&Vander Heiden)

    In this case, researchers created the first models of the bacterium associated with Huanglongbing or HLB, also known as citrus greening disease. The team’s work is described in a new paper published in Nature’s npj Systems Biology and Applications.

    The research team made models for six different strains of the bacterium known as CLas and doing so enabled them to identify as many as 94 enzymes essential for the bacterium’s survival. These enzymes can now be considered targets for the creation of new antibacterial treatments.

    In addition, the team identified metabolites required for the bacteria to grow.

    “Just like when humans break down the food they eat into small components called metabolites, which feed our cells, bacterial cells also require metabolites for their growth,” Borneman said.

    Knowing the metabolites needed for CLas’ growth could enable scientists to cultivate it in a laboratory setting. It is not currently possible to grow CLas on its own, hindering scientists’ ability to study it and ultimately to manage it.

    This research project involved a collaboration between UC Riverside, UC San Diego, Texas A&M University, and the U.S. Department of Agriculture. In addition to Borneman, members of the modeling team included UCR plant pathologist Georgios Vidalakis and UCSD systems biologist Karsten Zengler.

    UC Riverside is at the forefront of efforts to combat Huanglongbing. Other important areas of research include antibacterial development and delivery, immune system fortification in citrus, engineering resistant citrus via a detailed understanding of host-microbe interactions, breeding resistant citrus, and insect management, among others.

    Because microbes tend to mutate and acquire resistance mechanisms in response to drugs and other efforts to thwart them, Borneman cautions that any one solution to the problem may be short-lived.

    Transmission electron microscope image of CLas bacterium. (J.M. Bové/INRA)

    “Microbes almost always adapt to control measures, perpetuating the ‘arms race’ between pathogens and hosts,” Borneman said. “There won’t be one thing that will fix this disease. We likely will need to address all three components associated with the disease — the bacterium, the insect that transmits it, and the citrus plants — to find a long-lasting solution.”

    To that end, the research team is constructing metabolic models of citrus and the insect, the Asian citrus psyllid.

    “We expect that this multiorganism modeling endeavor will provide new insights into the mechanisms underlying this disease, which will lead to effective and sustainable Huanglongbing management strategies,” Borneman said. — By Jules Bernstein, UC Riverside

  • Barking Up the Right Tree: Canines Detect HLB

    In September 2019, huanglongbing—also known as HLB or citrus greening—was detected in residential citrus trees located in Ventura County, in southern California (and just recently, the first HLB carrying Asian Citrus Psyllid was detected in a commercial CA citrus grove).

    During an orchard review in California, expert detector dog, Szaboles alerts his trainer by sitting next to a citrus tree infected with Huanglongbing (HLB).

    The disease, which has no known cure, is caused by a bacterium that devastates citrus plants and is transmitted by psyllids (small plant-eating insects resembling lice) that carry the bacteria from tree to tree or by the grafting of infected plant material. Common symptoms of infection include blotchy mottling of entire leaves, premature defoliation of the tree, and fruits that are usually small, with green peel at the bottom and a bitter taste. Unfortunately, these visible signs of HLB do not manifest until months or even years after the initial infection. By then, it is too late for citrus growers to save their crop from a mass infestation.

    However, the Farm Bureau of Ventura County found a rather unconventional way around this problem.

    To contain the infected trees and prevent a citrus epidemic, the Farm Bureau decided to hire a team of detector dogs specially trained to find HLB bacteria. The dogs are a result of a unique program funded by USDA and run by Agricultural Research Service (ARS) Research Leader and Plant Pathologist Timothy Gottwald (now retired) at the U.S. Horticultural Research Laboratoryin Fort Pierce, FL.

    First, the clever canines patrolled the perimeter because the edges of a grove are where the disease would first accumulate. Then, they trotted through the grove of trees to ultimately identify over 200 infected trees from a grove of 3,500.

    According to Gottwald’s research, the canine-detection method has an accuracy rate of 99 percent. While humans need several minutes to visually examine each tree and collect samples for laboratory testing (which requires considerable lab time and supplies), the dogs can travel through groves of trees in mere minutes, sensing HLB-infected trees by smell faster and far more easily. The time saved in finding the disease earlier gives citrus growers the opportunity to remove and destroy or quarantine HLB-infected trees, controlling what could’ve been a severe outbreak and loss of crop.
     

    However, there are still some considerations to keep in mind when deploying the canines as an early detection technology. Each dog team can only work 30 minutes at a time before they must rest, and a new team takes over. Teams can work for about 6 hours a day. In addition, much like any lab equipment, dogs are periodically calibrated to the HLB “scent signature” to remain finely honed optimized detectors.

    Still, the dogs are more sensitive and accurate than any other available technology in the field. The employment of detector dogs is still a voluntary program, which means fruit growers and farmers have the choice to either use dogs to find HLB early or continue using a USDA-approved DNA test called polymerase chain reaction (PCR).

    “While PCR is an effective way to detect infections, it isn’t efficient,” Gottwald explained. “It’s difficult to pinpoint incomplete infections—or infections that are only on one part of a plant (for example, a single leaf out of an entire tree with possibly thousands of leaves)—using PCR because it requires numerous samples from all over the suspect specimen.”

    “On the other hand,” Gottwald continued, “detector dogs identify pathogens ‘holistically,’ easily locating minute infections regardless of what small part of the tree they are infecting.” With this increased scope and accuracy rate, Gottwald and his colleagues believe that the canines’ abilities will revolutionize how growers protect their crops.

    “These specially trained canines may also be used to detect diseases and infections in other fruits and vegetables, such as grapes, peaches, plums, and tomatoes,” he said. “Our research has shown that they can sense pathogens like plum pox virus or squash vein yellowing virus, which both can cause severe economic losses to agriculture industries.”

    The canine-detection method was validated in blind tests by USDA ARS in collaboration with the California Department of Food and Agriculture, with results published in 2020.— By Georgia Jiang, USDA-ARS

  • CLas-positive Asian Citrus Psyllid Found in Riverside Commercial Grove

    An Asian citrus psyllid (ACP) sample – confirmed positive for Candidatus Liberibacter asiaticus (CLas) the bacteria that causes Huanglongbing (HLB) – was collected from a commercial citrus grove in the Woodcrest area of Riverside County. Confirmed by Citrus Research Board’s Jerry Dimitman Laboratory, this single adult psyllid is the first CLas-positive ACP found in a commercial citrus grove in California.

    While a positive ACP detection in a commercial grove is cause for serious concern, as of today, HLB has not been detected in any California commercial groves. That said, it is more crucial than ever that we stop the disease from spreading by eradicating the Asian citrus psyllid in commercial groves. The cost to manage the Asian citrus psyllid is far less than any potential costs or loss to the industry should HLB take hold throughout our state.

    An expansion of the HLB quarantine zone will not be established as a result of the CLas-positive ACP detection and CDFA staff is swiftly conducting surveys and collecting samples per the ACP/HLB Action Plan  from the perimeter of all commercial groves and all residential HLB host plants that are located within a 250-meter radius around the find.

    While treatment is not mandatory as a result of the detection, all growers within 250-meters of the find site will be notified to apply insecticides to all HLB host material within the designated area with materials recommended by the University of California (UC).

    Currently, the best way to stop the disease from spreading is to stop the ACP. To stop the ACP, we must restrict its movement and suppress existing psyllid populations. It is critical to follow best practices and review recommendations from the UC on how to protect commercial citrus groves from HLB. Regulations are in place to help prevent the spread of the pest and disease. All growers, packers and haulers must comply with all California Department of Food and Agriculture, county and federal regulations, including quarantines.

    Growers in Riverside County may contact the County Agricultural Commissioner’s office or the CDFA Pest Hotline at 800-491-1899 for additional information. If you see or suspect ACP or HLB symptoms in your grove, please notify the CDFA hotline. – By the Citrus Pest & Disease Prevention Program

  • China Market Opportunities for California Nectarines

    On March 4, 2020, China announced market access for fresh U.S. nectarines as part of the U.S.-China Economic and Trade Agreement (ETA). This report briefly mentions the market access conditions for U.S. nectarines, discusses several key factors of China’s nectarine market (including import competition), and offers market-entry recommendations to consider when exporting fresh U.S. nectarines to China.

    Product Description & Access Overview

    On March 4, 2020, in accordance with the U.S.-China Economic and Trade Agreement (ETA), China granted official market access for U.S. fresh nectarines from designated counties in California (specifically Fresno, Tulare, Kern, Kings and Madera counties). California nectarines account for 95 percent of U.S. production. The harvest season for U.S. nectarines runs from mid-summer to mid-autumn, partially overlapping with Chinese domestic supply, which runs from May to October. Read the full report from the USDA Foreign Agricultural Service HERE

  • NEW NITROGEN MANAGEMENT RESOURCE AVAILABLE FOR CITRUS & AVOCADO

    To address nitrate pollution of groundwater, the Central Valley Regional Water Quality Control Board has initiated a regulatory program requiring growers to utilize nitrogen management practices that mitigate nitrate loading. Because nitrogen plays such a critical role in in the growth and development of avocado trees — and because it can be difficult to ensure trees are receiving the optimal amount of nitrogen — the University of California Department of Agriculture and Natural Resources has created the Nitrogen Management in Citrus and Avocado publication.

    This document is designed to optimize growers’ application of nitrogen while reducing nitrogen leaching by focusing on applying nitrogen at the right rate, at the right time with the right placement and from the right source (otherwise known as the four R’s of nutrient management). The guide provides specific examples for the rate of application based on the age, alternate bearing status and vegetative state of the tree and discusses the optimal spring/fall application periods. In addition, the document provides guidance on how to conduct leaf analysis and what optimal concentration percentages to look for.

  • Dr. Beth Grafton-Cardwell to Retire – Her View on 30 Years of Citrus IPM

    Through the years I have had many collaborators and numerous technical staff studying a wide variety of pests including California red scale, citricola scale, cottony cushion scale citrus cutworm, katydids, earwigs, Fuller rose beetle, citrus peelminer, citrus leafminer, citrus thrips, citrus red mite, snails, ants, aphids and Asian citrus psyllid as well as their natural enemies. In the early years, the main controls for these pests were organophosphate (OP) and carbamate insecticides. The initial research goal was to get these replaced with more selective insecticides that would allow natural enemies to participate in pest management. We successfully documented OP resistance in California red scale and citrus thrips and developed replacement insecticides that created a more balanced situation resulting in a reduction in pesticide use (as few as 4 treatments/year in the San Joaquin Valley). But alas, citrus IPM programs must change because new situations arise. For the citrus industry, the three drivers of change in the second half of my career have been drought exacerbating some pests, export countries demanding in- field treatments for insects as a replacement for Methyl Bromide (MeBr) fumigation, and the arrival of various invasive pests. These situations have provided me ample opportunities to work with regulators and the citrus industry and challenged my creative problem-solving abilities – never a dull moment.

    It is hard to say if the past 8-9 years of higher temperatures and on and off drought conditions are a permanent ‘climate’ change or are part of a cycle. However, they have certainly made California red scale more difficult to control. Growers have shifted from treating for California red scale once every other year to treating 3-4 times per year. Extra heat units have added an extra generation of scale per year and occasionally allowed scale development in winter. My research response has been to study and provide outreach on the use of California red scale pheromone disruption as an assist to reduce insecticide treatments. I am encouraged to hear reports of some acreage going back treatments every few years for California red scale.

    Export issues with S. Korea (Fuller rose beetle and California red scale) and with Australia and New Zealand (bean thrips and mites) began to crop up in the 2010s. In the past, shipments from California would be inspected at destination and, if there were any insects or mites of phytosanitary concern, the fruit would be fumigated with MeBr. With the worldwide reduction in MeBr use, there is now the expectation that California growers apply in-field treatments to eliminate these pests so fumigation at destination is not necessary. Complete disinfestation of an orchard is impossible to achieve so we launched studies on alternative fumigants and cold treatments that could be applied in California or during transport.

    Invasive pests such as glassy-winged sharpshooter, Diaprepes root weevil, citrus leafminer, and Asian citrus psyllid have been arriving regularly into California since about 2000. In each case, I evaluated chemical and biological controls, evaluated the level of damage they could inflict and conducted outreach to prepare the citrus industry. Of course, Asian citrus psyllid has been the most significant invasive pests because of its ability to transmit the bacterium that causes the deadly disease huanglongbing. My role has been to develop control strategies for growers around the state and assist them with their psyllid management programs.

    If I had to list the top three favorite projects of my career, they would be the following:

    1. Working with colleagues to survey 13 crops around the state to see what species of predatory mites are found and developing a ‘Key to the Phytoseiid Predatory Mites of California Crops’ (submitted for publication with UC ANR).

    2. Working with cottony cushion scale and predatory vedalia beetle and figuring out how to protect the vedalia from insect growth regulators by careful timing of the application of those pesticides. This is a great example of making an incompatible insecticide compatible with a sensitive natural enemy.

      3. Directing five technicians to scout 224 commercial citrus orchards around the state and see how grower applied pesticide treatments affect the psyllid populations. The results of this project led to strong recommendations for eradication and areawide psyllid treatment programs.

      For the past 14 years, all of this was accomplished while also acting as Director of the Lindcove Research and Extension Center. That position also had challenges with hiring and directing personnel, building facilities such as a laboratory, a greenhouse and a screenhouse structure, and attracting research and extension programs to the Center. It has been very rewarding to see the Center expand its capacity and reputation.

      Finally, I couldn’t have done any of this without the amazing technical staff and collaborators that have supported my projects for many years. I will miss the challenges of this job, but I expect to dip back in when needed at Lindcove and I look forward to new life challenges as I spend more time with my family and my community. 

  • Bill and Carol Chandler Honored as the Agriculturalists of the Year

    In celebrating the tradition and innovation of the State’s number one industry, agriculture, the California State Fair Board of Directors, upon the recommendation of the Agricultural Advisory Council, selects Bill and Carol Chandler as the Agriculturalists of the Year.

    The Agriculturalist of the Year award is presented to an individual or individuals who have contributed extensively, in a professional capacity, to California’s agricultural industry. Award criteria stipulates the individual or individuals must have demonstrated leadership and clearly represented the industry over a number of years in one or more of the following areas: finance, government, production agriculture, education, labor, research, communications, trade and public service.

    As a couple, Bill and Carol Chandler, contribute to the education and growth of the agriculture industry by serving the farming community in a variety of roles. Each in their own right continue to serve at local and statewide levels. Their peers recognize their commitment and leadership.  “They are a dynamic couple who have demonstrated a true commitment to not only farming, but to family and their community,” said Cathleen Galgiani, State Senator.

    “They truly are an unmatched duo when it comes to participating in leadership roles to articulate the value and need of the marvelous bounty of food, fiber and fauna that our state produces,” said Barry Bedwell, California Agriculture Leadership Foundation.

    Bill is a third-generation farmer in Fresno County. Bill and Carol grow grapes, peaches, plums, nectarines and almonds on the family farm in Fresno County, which was founded in the 1880s by Bill’s grandfather, W.F. Chandler. Their sons, John and Tom, recently joined the family farming business.

    Bill, a graduate of the University of California, Davis in Agriculture Production has had a long history of involvement in California agriculture. He has served and continues to serve and be recognized on a number of boards and commissions over the years, including:

    California Association of Winegrape Growers, Nisei Farmers League, Fresno County Farm Bureau, California Cling Peach Advisory Board, Freestone Peach Association, California Fresh Fruit Association, U.C. Davis Foundation Board, U.C. Davis Fresno County Alumni Scholarship Chair, Cal Aggie Alumni Association Director, and U.C. President’s Agriculture Advisory Committee.

    A graduate of Class 6 of the California Agriculture Leadership Program, Bill is also involved in his community as a board member of the Sequoia Council of Boy Scouts of America and is the recipient of the Silver Beaver award.

    Carol is a partner in Chandler Farms. Carol is actively engaged in the business administration portion of the farming operation. Prior to joining the family farm, Carol taught in the San Joaquin Valley, including Fresno City College. She received her Bachelor’s Degree from the University of California, Davis, and her Master’s Degree from California State University, Fresno.

    Carol is a past State President of California Women for Agriculture, a member of the Board of Directors of Western Growers Association, Fresno State Board of Governors, the Central Valley Community Foundation and American Agri-Women. She is also a member of the CSU Fresno Water Task Force and serves on the UC President’s Advisory Commission on Agriculture and Natural Resources. Carol previously served on the California State University Board of Trustees, University of California Board of Regents, California Post-Secondary Education Commission, U.S. Department of Agriculture Advisory Committee on Emerging Markets, Grape & Tree Fruit League, and the Fresno County Fair Board.

    Recognized by the California State Legislature as Woman of the Year in 1992 and 2002, Carol has further been acknowledged for her outstanding contributions to agriculture and education as the recipient of the Tapestry Award presented by Common Threads for outstanding achievements in agriculture, and as the Agriculturalist of the Year by the Fresno County Chamber of Commerce.

    The Chandlers will formally be honored at the California State Fair Gala, an evening supporting the California agriculture award winners and the Friends of the California State Fair scholarship program on Thursday, June 25, 2020. Those interested in attending and honoring Bill and Carol Chandler can purchase tickets at https://calexpostatefair.com/gala/.

     

  • Updated Regs on Bulk Citrus Movement into HLB Quarantine Area

    Effective April 13, 2020, the California Department of Food and Agriculture (CDFA) will revoke Quarantine Commodity (QC) permit number 1486. QC 1486 originally authorized the intrastate movement of bulk citrus fruit from the Asian citrus psyllid (ACP) Bulk Citrus Regional Quarantine Zones 2, 3, 4, 5 or 7, into the Huanglongbing (HLB) quarantine area, without meeting the ACP-free performance standard.

    The motion to revoke QC 1486 was unanimously passed by the Citrus Pest and Disease Prevention Committee (CPDPC) at a committee meeting on March 11, 2020. CDFA subsequently approved the motion and will begin its implementation this month.

    “While the committee understands this revocation represents a change for a limited number of our industry partners, we have made this science-based decision because we believe the overall benefit these actions will have in protecting the industry against the spread of ACP and HLB will outweigh the added mitigation steps required of our growers and packers,” said Jim Gorden, chairman of the Citrus Pest & Disease Prevention Program.

    Upon the effective date, all shipments of bulk citrus fruit into the HLB quarantine area, Bulk Citrus Regional Quarantine Zone 6, must meet the ACP-free performance standard, which includes field cleaning by machine or a preharvest treatment, and must be accompanied by the ACP-free declaration form. To download the ACP-free declaration form, please visit www.cdfa.ca.gov/plant/pdfs/acp/ACPFreeDeclarationForm.pdf.

    Prior to shipment, growers must also notify the appropriate county agricultural commissioner’s office to which they will be shipping bulk citrus, as stated in the grower’s compliance agreement.

    “The committee based it’s response on the risk-based model, which indicated that movement of unmitigated fruit into the HLB quarantine presents a higher risk than we initially thought,” said Keith Watkins, chairman of the operations subcommittee of the CPDPP. “By potentially shipping psyllids into an area known to have HLB, we’re essentially throwing gasoline on the fire. These changes will not only create more uniform mitigation requirements, but allow us to future proof these regulations for any future HLB detections in new areas of the state.”

    Steps like this are critical in the fight to save California’s citrus industry from ACP and HLB, which has been found in residential areas of Los Angeles, Orange, Riverside and San Bernardino counties at an increasing rate. Now more than ever, it is important for the citrus industry to work together in preventing the spread of this harmful pest and disease.

    To review the full document for citrus growers and grove managers in an ACP bulk citrus regional quarantine zone or HLB quarantine area, please click here.

    For questions regarding this regulatory advisory, please contact Keith Okasaki at Keith.Okasaki@CDFA.ca.gov