MRL Compliance Crucial for Citrus Exporters

Josh McGillCalifornia Corner, Fresh, Regulation

Maximum residue limits (MRLs) are a constant concern for growers. MRL issues can create a variety of obstacles depending on which market citrus exports are destined for. While the industry generally complies well with MRLs, caution is crucial as they can be a significant hurdle. Jim Cranney, president of the California Citrus Quality Council, said certain markets can be more …

California Fruit Fly Quarantines Expanded

Josh McGillCalifornia Corner, Pests, Regulation

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 …

fruit fly

Queensland Fruit Fly Quarantine in California

Josh McGillCalifornia Corner, Pests, Regulation

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

Josh McGillCalifornia Corner

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

Josh McGillCalifornia Corner, HLB Management

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, …

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More Oriental Fruit Fly Quarantines in California

Josh McGillCalifornia Corner, Pests, Regulation

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

Josh McGillCalifornia Corner, Crop 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, …

First HLB Detection in Ventura County

Tacy CalliesCalifornia Corner, HLB Management, Regulation

The California Department of Food and Agriculture (CDFA) has declared a quarantine in Ventura County following the detection of the citrus disease huanglongbing (HLB), or citrus greening, in two citrus trees on one residential property in the city of Santa Paula. These detections are the first HLB-positive trees in Ventura County. CDFA is working with the U.S. Department of Agriculture …

Forecast for California Mandarins

Josh McGillCalifornia Corner, Crop Forecast, 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

Josh McGillCalifornia Corner, Pests

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. …

First CLas-Positive Psyllids Found in Ventura County

Josh McGillCalifornia Corner, HLB Management, Psyllids

A Candidatus Liberibacter asiaticus (CLas)-positive Asian citrus psyllid (ACP) sample has been collected from a residential property in California’s Ventura County. CLas is the bacterium that causes HLB. The Citrus Research Board’s Jerry Dimitman Laboratory confirmed the positive sample. This is the first confirmed CLas-positive ACP sample found in Ventura County. The positive sample, comprised of 12 adult psyllids from …

‘Crazy Weather’ Kicks Off California Citrus Season

Josh McGillCalifornia Corner, Weather

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 …

Tau Fruit Fly Quarantine Expanded

Josh McGillCalifornia Corner, Pests, Regulation

Federal and state agriculture agencies on Aug. 15 expanded the Zeugodacus tau fruit fly quarantine in the Stevenson Ranch area of Los Angeles County, California. The action was taken by the U.S. Department of Agriculture Animal and Plant Health Inspection Service (USDA APHIS) and the California Department of Food and Agriculture (CDFA). The expansion was in response to the confirmed …

California and Arizona Citrus Projects Funded

Josh McGillCalifornia Corner, Research

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 …

Tau Fruit Fly

First Tau Fruit Fly Quarantine in Western Hemisphere

Josh McGillCalifornia Corner, Pests, Regulation

A portion of Los Angeles County has been placed under quarantine for the Tau fruit fly (Zeugodacus tau group) following the detection of more than 20 flies in the unincorporated area of Stevenson Ranch, near the city of Santa Clarita. The fly has a very wide host range, including numerous citrus varieties as well as a select range of native …

California Lemon Rootstock Research Reported

Josh McGillCalifornia Corner, lemons, Rootstocks

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 …

lemon production

Lemon Scion Research Summarized

Josh McGillCalifornia Corner, lemons, Varieties

An assortment of lemon scions producing fresh market fruit performed differently for yield and other qualities in three California locations. Glenn Wright, University of Arizona associate professor and Extension specialist for tree crops, provided the comparative results from the three locations in a June 20 webinar. All results are through the 2020–21 season. SANTA PAULAThe Santa Paula location, with a …

sweet orange scab

Update on Sweet Orange Scab in California

Josh McGillCalifornia Corner, Diseases

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 …

Update on Fungicides for Citrus

Josh McGillCalifornia Corner, Diseases

In a recent webinar, Jim Adaskaveg, University of California, Riverside professor and plant pathologist, discussed some recently registered fungicides to manage phytophthora and other fungal diseases of citrus. Orondis was registered in 2018, Presidio in 2019 and Revus in 2020. Adaskaveg said Orondis and Revus each contain a new active ingredient with a different mode of action and provide a …

Federal Funding for Citrus Includes Boost for Breeding

Josh McGillBreeding, California Corner

California Citrus Mutual (CCM) in mid-June welcomed congressional support for critical federal citrus programs. The programs being supported include the Citrus Health Response Program, the HLB Multi-Agency Coordination Group and an additional $1 million in federal funding for a new citrus breeding program. The House Appropriations Committee has included additional funding for citrus breeding research. The research is intended to …