Greg Douhan with University of California Agriculture and Natural Resources (UCANR) recently wrote about phytophthora diseases in California citrus. Edited excerpts follow: There are at least four species of Phytophthora species (P. citrophthora, P. parasitica, P. syringae and P. hibernalis) associated with citrus in California. The three diseases in citrus caused by these fungal-like pathogens are phytophthora root rot, phytophthora …
Oriental Fruit Fly Quarantine Expanded in California
The Oriental fruit fly (OFFor Bactrocera dorsalis) quarantine in San Bernardino and Riverside counties in California was expanded in October and November by federal and state agriculture authorities. The actions were taken on Oct. 12, Nov. 3, Nov. 9 and Nov. 17 by the U.S. Department of Agriculture’s Animal and Plant Health Inspection Service (APHIS) and the California Department of …
Congressmen Urge USDA to Buy California Navels
Four California congressmen recently asked U.S. Secretary of Agriculture Thomas Vilsack to have the U.S. Department of Agriculture (USDA) buy $100 million worth of California navels. The orange purchase would help alleviate the impacts of storms. The letter from Congressmen Jim Costa, David Valadao, Doug LaMalfa and Josh Harder follows: We write in support of the Section 32 request submitted …
Updates on Medfly and Psyllid Quarantines in California
Agriculture officials recently established a Mediterranean fruit fly (Ceratitis capitata or Medfly) quarantine and expanded an Asian citrus psyllid (ACP) quarantine, both in California. MEDFLYFederal and state agriculture officials on Oct. 18 established the Medfly quarantine in California’s Los Angeles County. The action was taken by the U.S. Department of Agriculture’s Animal and Plant Health Inspection Service (USDA APHIS) and …
Measuring California’s Citrus Environmental Benefits and Impacts
Major retailers have been asking questions about the citrus industry’s sustainability efforts. In response, a California citrus industry life cycle analysis project will quantify the net environmental benefits and impacts of citrus production in a typical year. The information will be gathered from a survey developed by researchers at the University of California, Davis (UC Davis), with support from the …
California Fruit Fly Quarantines Expanded
Federal and California agriculture officials have expanded the Tau fruit fly quarantine in Los Angeles County and the Oriental fruit fly (OFF) quarantine in San Bernadino and Riverside counties. The actions were taken by the U.S. Department of Agriculture’s Animal and Plant Health Inspection Service (APHIS) and the California Department of Food and Agriculture (CDFA). TAU FRUIT FLYThe agencies expanded …
Queensland Fruit Fly Quarantine in California
Portions of Ventura and Los Angeles counties have been placed under quarantine for the Queensland fruit fly (QFF), the California Department of Food and Agriculture (CDFA) announced in late October. The quarantine followed the detection of two adult QFFs within the city of Thousand Oaks in Ventura County. The quarantine area measures 76 square miles. It is bordered on the …
Fruit World on Certification, California’s Citrus Season and More
Fresh fruit produce company Fruit World announced its recent Equitable Food Initiative (EFI) certification out of its Reedley, California facility. The company also reported that the California citrus season is late this year, and that Fruit World’s chief executive officer will participate on a panel discussing the upcoming Strengthening Organic Enforcement (SOE) rule. According to Equitable Food Initiative’s website, it …
HLB Resources for California Growers
Recently, the California Department of Food and Agriculture (CDFA) declared an HLB quarantine in Ventura County following the first detections of the disease in the county. In response, the Citrus Pest & Disease Prevention Program (CPDPP) issued a list of HLB resources. The resources are intended to help inform the citrus industry about what changes to expect from the quarantine, …
More Oriental Fruit Fly Quarantines in California
Federal and state agriculture officials in late September established Oriental fruit fly (OFF) quarantines in Sacramento, San Bernardino and Riverside counties in California. The actions were taken by the U.S. Department of Agriculture’s Animal and Plant Health Inspection Service (USDA APHIS) and the California Department of Food and Agriculture (CDFA) following OFF detections in those areas. The new quarantines come …
California Navel Orange Forecast
The initial 2023–24 California navel orange forecast is 74 million cartons. This is up 1% from the previous year, the California Department of Food and Agriculture (CDFA) reported. The forecast is based on the results of the 2023–24 navel orange objective measurement survey, which was conducted from June 19 to Sept. 1, 2023. Estimated fruit set per tree, fruit diameter, …
Forecast for California Mandarins
The 2023–24 California forecast for Tango and W. Murcott Afourer mandarins is 21 million 40-pound cartons, the California Department of Food and Agriculture (CDFA) recently reported. This forecast is based on the results of the 2023–24 mandarin objective measurement survey, which was conducted from July 1 to Sept. 1, 2023. This is the first time the U.S. Department of Agriculture’s …
Citrus Thrips Reduce California Production
California citrus growers faced significant citrus thrips challenges this season due to the unprecedented rainfall, California Citrus Mutual (CCM) reported. The unusual weather pattern led to uncontrollable conditions in the field. Reports from the CCM Pest and Disease Task Force indicated that some growers have experienced exterior fruit scarring on as much as 80% of the fruit in individual blocks. …
Egyptian Citrus Imports Would Be ‘Calamity’ for California Growers
Egyptian citrus could be on the way to the U.S. market after a request was made to the U.S. Department of Agriculture (USDA). A pest risk assessment has been drafted by USDA’s Animal and Plant Health Inspection Service (APHIS). Jim Cranney, president of the California Citrus Quality Council (CCQC), said the assessment is for fresh oranges and tangerines, which would …
Fruit Fly Quarantine Actions in California
Portions of Contra Costa and Santa Clara counties in California have been placed under quarantine for the Oriental fruit fly (OFF), and a quarantine in Orange County has been removed. See the updated quarantine map here. CONTRA COSTA COUNTYIn Contra Costa County, detections near the cities of Brentwood and Oakley have resulted in a quarantine zone covering 99 square miles. …
‘Crazy Weather’ Kicks Off California Citrus Season
The timeline for the California citrus season is later than average but is getting started in the Coachella and Imperial valleys. Rainstorms have been a recurring theme for 2023, causing a bit of damage in some areas. However, Casey Creamer, president and chief executive officer of California Citrus Mutual, told AgNet West there is always hope for a good year …
California and Arizona Citrus Projects Funded
The California and Arizona departments of agriculture received funding for four citrus-related projects from the U.S. Department of Agriculture’s (USDA) Agricultural Marketing Service (AMS) for 2023. Nationwide, USDA AMS allocated $72.9 million in Specialty Crop Block Grant Program funding. DROUGHT-TOLERANT VARIETIESThe California Department of Food and Agriculture (CDFA) received $499,921 for designing drought-tolerant specialty crops using metabolic modeling. The University …
California Lemon Rootstock Research Reported
Researcher Glenn Wright recently reported how various rootstocks for lemon trees producing fresh market fruit compared for yield and other qualities in three California locations with different climates. Wright is a University of Arizona associate professor and Extension specialist for tree crops. SANTA PAULASanta Paula’s warm summer Mediterranean-like climate had the following results: LINDCOVEResearch in Lindcove, a hot summer Mediterranean-like …
Update on Sweet Orange Scab in California
A California researcher recently provided an update on sweet orange scab (SOS). The fungal disease has been detected in the state 18 times since 2013. University of California, Riverside professor and plant pathologist Jim Adaskaveg said most of the detections have been in Southern California, especially in Imperial County. Eleven detections have been in commercial lemon orchards, three in commercial …
HLB in Florida Is a Warning to California
The damage that HLB has inflicted on Florida citrus groves and production over the past 18 years should serve as a warning for California producers, California’s Citrus Pest & Disease Prevention Program (CPDPP) stated recently. CPDPP noted that with HLB detected in thousands of California residential trees, it’s important for commercial growers to take steps to prevent the disease. According …