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News for citrus growers around the globe
The U.S. Department of Agriculture (USDA) is extending the deadline for farmers to apply for Stages 1 and 2 of the Supplemental Disaster Relief Program (SDRP) to Sept. 30. Additionally, USDA’s Farm Service Agency (FSA) is providing greater flexibility for farmers who experienced quality losses on eligible crops. When applying for this program, farmers who experienced quality-related discounts can use verifiable and reliable documentation to …
A recent article from Alabama A&M and Auburn universities highlighted the major issues facing citrus growers in southern Alabama’s Baldwin and Mobile counties. FREEZES One of the biggest obstacles that citrus growers face is highly variable weather, including late-season freezes. Jacob Kelley, an Alabama Extension commercial horticulture agent at Auburn University, said winter temperatures that might swing from 80 to …
The University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) recently published “Brix Basics: Where Plant Sugars Come From and Why They Matter.” Edwin Gutierrez Rodriguez, UF/IFAS citrus Extension agent for DeSoto, Hardee and Manatee counties, authored the article. Edited excerpts follow: Degrees Brix is the measurement of the total dissolved solids in a liquid, based on how much …
The U.S. Department of Agriculture Animal and Plant Health Inspection Service (USDA APHIS) highlighted huanglongbing (HLB) disease in the citrus section of its recent Plant Protection and Quarantine (PPQ) 2025 Annual Report. It recognized HLB as the most serious disease of citrus, currently impacting Florida and Texas and threatening citrus in Alabama, Arizona, California, Georgia, Louisiana and Mississippi. The report …
Federal and state agriculture officials have taken actions regarding Mediterranean fruit fly (Medfly) and sweet orange scab (SOS) quarantines in California. The U.S. Department of Agriculture Animal and Plant Health Inspection Service (APHIS) in cooperation with the California Department of Food and Agriculture (CDFA) updated the quarantines. MEDFLY QUARANTINE REMOVED The agencies removed the Medfly quarantine in Alameda and Santa …
By Tripti Vashisth, Meryam Manzoor and Johann Hiller Fruit quality and yield remain major concerns for sweet orange growers in the HLB era. Both are closely linked to the tree’s ability to support developing fruit throughout the season. Leaves are the primary source of carbohydrates needed for fruit growth, retention and juice development. Canopy density and leaf area directly influence …
Researchers have discovered a soil bacterium that helps citrus plants grow by releasing a natural chemical signal that improves the plant’s ability to take up nutrients. The finding could lead to new biological products designed to improve citrus tree health and fertilizer efficiency. An article about the study was published in Horticulture Research. The authors are Hongfei Li, Dongxin Liu, …
The world of advertising and promotion is changing fast in the digital age now driven by artificial intelligence (AI). The way people seek information has shifted as AI integrates into the internet. This presents opportunities and challenges for marketers, including the Florida Department of Citrus (FDOC). The FDOC’s mission is to drive more consumption of orange juice and fresh fruit. …
Silvec Biologics Inc. has announced that its RNA-based therapy-delivery product is registered for unconditional commercial use under the U.S. Environmental Protection Agency’s (EPA) Federal Insecticide, Fungicide and Rodenticide Act. The product is registered under the name Construct CTV-SoD2. “A new tool is now available to help strengthen citrus tree health and support the future of Florida’s citrus industry,” said Matt Joyner, executive vice …
A new study demonstrates that proline biostimulation can significantly enhance freezing stress tolerance in citrus by stabilizing photosynthesis, strengthening antioxidant defenses and improving carbohydrate metabolism. The findings offer promising strategies for protecting citrus crops from damaging low-temperature events. Proline biostimulation is the application of the amino acid proline to plants to help them resist harsh environmental conditions like freezing cold, …
One of satsuma mandarin’s drawbacks is its alternate bearing tendency. It will produce a heavy crop load one year and a low one the next year. Mary Sutton, University of Georgia (UGA) assistant professor and citrus Extension specialist, said tree hedging may provide a solution. She discussed the management technique at the Southeast Georgia Citrus Update in Lyons, Georgia on …
By Fernando Alferez and Muhammad A. Shahid Citrus trees bloom profusely. It is estimated that a healthy adult tree can produce more than 200,000 flowers every year. This number is much higher than that of fruits the tree can maintain and develop. Normally only between 1% to 5% of flowers set fruit that develops, matures and can ultimately be harvested. …
The Florida Fruit & Vegetable Association (FFVA) announced the selection of 13 up-and-coming leaders for Class 16 of its Emerging Leader Development Program. The program is an immersive, hands-on experience addressing the critical issues facing Florida agriculture. It helps class members develop the skills needed to lead within FFVA and beyond. Since its inception in 2011, the program — administered …
Beneficial soil fungi known as arbuscular mycorrhizal fungi (AMF) may help citrus trees tolerate toxic levels of manganese, according to new research. The findings could eventually lead to new management strategies for citrus grown in acidic soils where manganese toxicity can limit tree growth and productivity. An article about the study was published in the journal Tree Physiology. The research …
New research suggests that how citrus trees respond to water stress may be more important than simply how much water they receive. The findings could help growers improve irrigation management, reduce fruit cracking and protect yields as weather becomes more variable. An article about the study — “Linking plant water status dynamics to yield and fruit cracking in citrus orchards …
The Citrus Research and Field Trial (CRAFT) Foundation has announced that applications are now open for Traditional New Plantings Cycle Eight and Existing Tree Therapies (ETT) Round Five. TRADITIONAL NEW PLANTINGS This program evaluates grower-selected rootstock and scion combinations under commercial growing conditions. EXISTING TREE THERAPIES This program evaluates therapeutic treatments designed to improve the health and productivity of mature …
By Marisa L. Zansler The 2026–27 Florida citrus season is about to begin, making it an appropriate time to assess the outlook and consumer demand for Florida’s orange, grapefruit and specialty citrus production. For much of the past decade, industry conversations about what lies ahead for Florida citrus have, understandably, centered on its production challenges. The grip of citrus greening, …
By Michael E. Rogers Florida citrus growers continue to adapt to new challenges, regulations and technologies while maintaining the resilience that has defined the industry for generations. Supporting that effort, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) research and Extension programs remain focused on delivering practical, science-based solutions that help growers maintain productive and profitable operations. For …
The California Department of Food and Agriculture (CDFA) has expanded the huanglongbing (HLB) quarantine boundary in San Diego County following the confirmation of one HLB-positive residential citrus tree in Fallbrook. CDFA is also expanding the Asian Citrus Psyllid (ACP) Bulk Citrus Regional Quarantine Zone 6 to reflect the HLB quarantine boundary expansion. A map of the expanded boundary can be …
As high temperatures become more common in citrus-growing regions, researchers are searching for ways to help trees better tolerate heat. A new study suggests that two naturally occurring plant hormones — abscisic acid (ABA) and brassinosteroids (BR) — may strengthen citrus trees’ defenses against heat stress. The research was published in the journal Horticulturae by Longfei Jin, Yueting Sun, Yanmei …
