Universities Receive 11 Federal Grants for HLB Research

Josh McGillHLB Management, Research

The U.S. Department of Agriculture’s National Institute of Food and Agriculture (USDA NIFA) has invested more than $25 million in 11 projects as part of the Emergency Citrus Disease Research & Extension program. This program brings the nation’s top scientists together with citrus industry representatives to find scientifically sound solutions that combat and prevent citrus greening (HLB)​ at the farm level. Some of this …

New Crop Insurance Program for Controlled Environments

Josh McGillInsurance, nursery

The U.S. Department of Agriculture (USDA) announced a new crop insurance program designed for agricultural producers who use controlled environments as a major part of their operations. The Controlled Environment program from USDA’s Risk Management Agency (RMA) is specifically for plants grown in fully enclosed controlled environments. It provides coverage against plant diseases subject to destruction orders. The Controlled Environment …

Optimistic First Forecast for Florida Citrus

Tacy CalliesCrop Forecast

The bad news is that severe weather warnings caused the annual citrus crop luncheon to be cancelled at Putnam Ranch in Zolfo Springs, Florida. The good news is that the Florida citrus crop forecast is up in all categories. Bill Curtis, agricultural statistics administrator with the Florida Department of Agriculture and Consumer Services, presented the U.S. Department of Agriculture’s (USDA) …

Seeking Injection Alternatives and Additions

Josh McGillCRDF, HLB Management, Research

The Citrus Research and Development Foundation (CRDF) approved three new projects during its September board of directors meeting. The projects will test the injection of different antimicrobial materials to treat HLB. One project will be managed by Ozgur Batuman, a citrus pathologist with the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS). Another will be run by Kranthi …

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 …

Diseases Without Borders: Leprosis and Yellow Vein Clearing Viruses

Josh McGillDiseases

By Ozgur Batuman Plant virus diseases are unusually difficult to manage if introduced into new production sites. Citrus-infecting viruses, particularly those spread by insect vectors, are no exception to this. Florida is regularly challenged by a barrage of invasive pests and pathogen species that could devastate the citrus industry. Viruses causing citrus leprosis and citrus yellow vein clearing diseases are …

Improved Lebbeck Mealybug Detection

Josh McGillPests

The U.S. Department of Agriculture-Agricultural Research Service (USDA ARS) scientists and research partners have found a faster, safer and less expensive way for growers to detect the invasive lebbeck mealybug. A recent study published in Journal of Applied Entomology describes their work. The lebbeck mealybug (Nipaecoccus viridis) feeds on and damages various citrus fruit and ornamental plants. The invasive species …

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 …

Researcher Probes Lemon Pitting Problem

Josh McGilllemons

Low temperatures and fluctuations in environmental conditions are among what researcher Ashraf El-Kereamy described as a “possible hypothesis” for the cause of lemon pitting in California’s San Joaquin Valley. Other possible causes include what he called “overdoing a good thing” such as fertilizer and irrigation, or something affecting the integrity of the lemon’s wax layers. El-Kereamy is director of the …

citrus

Citrus Industry Members to Advise on Trade

Josh McGillTrade

Several members of the U.S. citrus industry have been appointed or re-appointed to the federal Agricultural Technical Advisory Committee for Trade in Fruits and Vegetables. They include James Cranney Jr. of California Citrus Quality Council, Casey Creamer of California Citrus Mutual, Melissa Frank-Poole of The Wonderful Company, Dale Murden of Texas Citrus Mutual and Daniel Richey of Riverfront Packing Company. …

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 …

USDA Funds Three Georgia Citrus Projects

Josh McGillGeorgia, Research

The U.S. Department of Agriculture Agricultural Marketing Service (USDA AMS) funded three citrus projects in Georgia for fiscal year 2023. SATSUMA EDUCATIONThe Georgia Department of Agriculture (GDA) received $103,225 for a satsuma education project. GDA will partner with local farmers and produce distributors to increase the availability of Georgia-grown satsuma mandarins in retail locations. The project will work closely with …

Global Mandarin Production Declining

Josh McGillCrop Forecast, International, Mandarins

Global production of tangerines/mandarins for 2022–23 is estimated by the U.S. Department of Agriculture Foreign Agricultural Service (USDA FAS) to be 36.9 million metric tons (MMT), down 900,000 metric tons (MT) from the prior year. China production, which accounts for almost 72% of global tangerine/mandarin production, is estimated to be down 2% to 26.5 MMT due to lower yields. European …

Agrobacteria Shows Promise Against HLB

Josh McGillHLB Management, Research

U.S. Department of Agriculture Agricultural Research Service (USDA ARS) scientists have discovered a way to augment a citrus tree’s natural resistance to pathogens, including HLB. The scientists are in the Crop Improvement and Genetics Research (CIGR) unit in Albany, California. According to James Thomson, a geneticist at CIGR, by incorporating receptors that can recognize pathogens, scientists are able to activate …

Less Global Orange Production

Josh McGillCrop Forecast, International

Global orange production for 2022-23 is estimated by the U.S. Department of Agriculture Foreign Agricultural Service (USDA FAS) at 47.8 million metric tons (MMT), 5% less than the prior year. Lower production in the European Union, Turkey and the United States is only partially offset by a larger crop in Egypt. U.S. production is estimated to drop by over a …

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 …

Biggest Need for Georgia Citrus Is Research

Josh McGillGeorgia, Research

The Georgia Citrus Commission members have been selected to serve the state’s up-and-coming industry. Now it is time for those five individuals to determine the pathway for the industry to be successful for the foreseeable future. Commission member Lindy Savelle believes research is the key component in advancing the state’s citrus industry. She said that is why the Georgia Citrus …

citrus

Final U.S. Citrus Forecast Has Several Changes

Tacy CalliesCrop Forecast

The final U.S. Department of Agriculture National Agricultural Statistics Service (USDA NASS) citrus forecast for the 2022–23 season, issued July 12, has several changes from the June forecast. FLORIDAFlorida’s all-orange forecast rose approximately 1% to 15.85 million boxes, up 100,000 boxes from June. The full increase is in the Valencia orange forecast, which rose to 9.7 million boxes. Florida’s all-grapefruit …

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 …

USDA Citrus Breeding Program Focused on Rootstock and Variety Solutions

Josh McGillBreeding, Rootstocks, Varieties

The U.S. Department of Agriculture’s (USDA) U.S. Horticultural Research Laboratory in Fort Pierce, Florida, has been home to a citrus rootstock and variety breeding program for many years. Kim Bowman, a research geneticist, has been with the program for more than 30 years. More recently, Matthew Mattia, a geneticist, joined the breeding team. They provide an update on the program …