march

Sneak Peek: March 2025 Citrus Industry

Daniel CooperDiseases, Sneak Peek, Soil Health

The Citrus Industry section in the March issue of Specialty Crop Grower magazine offers timely information citrus growers won’t want to miss. Now is the time for Florida citrus producers to begin thinking about their disease management programs for the season. Megan Dewdney, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) plant pathologist, offers a foliar disease outlook …

HLB-affected trees

Frequent Irrigation Is Critical for HLB-Affected Trees

Daniel CooperHLB Management, Irrigation, Tip of the Week

By Tripti Vashisth and Mary Sutton HLB-affected trees have small and weak root systems. These trees often experience water and nutrient deficit. However, not all HLB-affected trees experience the same impact. Trees with severe HLB symptoms will have higher root loss and water deficit than trees with mild HLB symptoms. The water deficit exacerbates during spring, which is often the …

weather

Foliar Disease Watch in Florida

Daniel CooperDiseases, Tip of the Week

By Megan Dewdney Spring is the time to start thinking about foliar disease management in Florida. Depending on the type of citrus being produced and the market destination, different diseases will be important. POSTBLOOM FRUIT DROP The disease that affects all citrus, particularly oranges, is postbloom fruit drop (PFD). This disease is highly dependent on the weather during bloom. Currently, …

Alico

Alico: Production Down, Prices Up

Daniel CooperProduction

Alico, Inc., which will cease citrus production after this season, reported its citrus harvest declined in the three months ending Dec. 31, 2024 compared to the same period a year earlier. For those three months, Alico Citrus harvested approximately 4 million pound solids of fruit, compared to 4.7 million pound solids in the same period in the prior fiscal year. …

Orange Crop

Update to Brazil’s Orange Crop Forecast

Daniel CooperBrazil, Crop Forecast

Fundecitrus and its cooperators released an orange crop forecast on Feb. 10. Total production is forecast to be 228.52 million boxes for 2024–25. This is a 2.4% increase from the December forecast of 223.14 million boxes, but a decrease of 1.7% from the season’s initial orange estimate that was released in May. This forecast is for the São Paulo and …

oxytetracycline

Lessons From Oxytetracycline Injection Trials

Daniel CooperHLB Management

By Ute Albrecht, Carol Tardivo, Gabriel Pugina, Larissa Nunes, Jasmine de Freitas and Gerardo Moreno Since the approval of oxytetracycline (OTC) injection to manage citrus greening (huanglongbing, HLB) in Florida, the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) plant physiology team at the Southwest Florida Research and Education Center (SWFREC) has completed various research trials with multiple …

Korea’s

Update on Korea’s Citrus Production

Daniel CooperCrop Forecast, International

The U.S. Department of Agriculture Foreign Agricultural Service (USDA/FAS) recently forecast that Korea’s tangerine/mandarin production will decline 2.6% in marketing year 2024–25, to 565,000 metric tons (MT). Korea doesn’t produce oranges or grapefruit and only a small crop of lemons — an estimated 550 MT on 35 hectares in 2023. LOW FORECAST The tangerine/mandarin forecast, if realized, would be the …

oxytetracycline

Oxytetracycline Efficacy Impacted by Exposure to Field Conditions

Daniel CooperHLB Management, Tip of the Week

By Lauren Fessler Mathews, Sanju Kunwar, Ana Redondo and Ozgur Batuman Based on numerous research studies conducted by scientists at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS), it has been proven that injections of oxytetracycline (OTC) can help to alleviate symptoms caused by huanglongbing (HLB) disease. This treatment is now widely practiced and crucial for preventing …

hlb

Weathering the HLB Storm

Daniel CooperHLB Management

Specialty crop growers might be aware of the disease sweeping through Florida’s citrus industry. Its impact has been tremendous and has tested the survival of the state’s signature crop. This year will mark the 20th anniversary of the official confirmation of citrus greening disease (also known as huanglongbing or HLB) in Florida. In the past two decades, the state’s output …

citrus forecast

Changes in U.S. Citrus Forecast

Daniel CooperCrop Forecast

The U.S. Department of Agriculture National Agricultural Statistics Services (USDA/NASS) released a citrus forecast on Jan. 10. FLORIDA Florida orange and grapefruit production expectations were unchanged from the December citrus forecast. The Florida orange forecast remains at 12 million boxes and grapefruit at 1.2 million boxes. Florida non-Valencia orange final fruit size is smaller than the average, requiring 327 pieces …

pest management

Plan Your 2025 Pest Management

Daniel CooperPest Management, Pests, Tip of the Week

By Lauren Diepenbrock Pest management is a year-round challenge in Florida citrus. With the warm climate, pests are at the ready as soon as plant resources are available to them. With knowledge of invertebrate biology in relation to tree phenology, growers can develop plans to protect fruit and maintain productive citrus trees. HIGHLY PROBLEMATIC PESTS Populations of some highly problematic …

research center

Research Center to Combat Brazilian Citrus Diseases

Daniel CooperBrazil, Diseases, Research

The Applied Research Center for Innovation and Sustainability in Citrus Farming was inaugurated Dec. 12 in a ceremony at the Palácio dos Bandeirantes, seat of Brazil’s São Paulo state government. Its purpose is to combat the main citrus diseases, such as citrus variegated chlorosis, sudden citrus death and above all, citrus greening. The São Paulo Research Foundation (FAPESP), Fundecitrus and …

Hurricane Milton

Hurricane Milton Citrus Losses Could Reach $55 Million

Daniel CooperEconomics, hurricane

The University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) estimated Hurricane Milton citrus production losses are from $23.1 million to $55.2 million in Florida. The UF/IFAS Economic Impact Analysis Program (EIAP) stated that significant fruit drop was reported, especially on varieties that were ready for harvest. Impacted fruit included early oranges, tangerines and tangelos. Some growers also reported …

HLB-resistant tree

Fundecitrus Researchers Participate in International Citrus Conference

Daniel CooperEvents, International

Researchers with Brazil’s Fundecitrus discussed HLB-related topics at the recent 15th International Citrus Conference in South Korea. Fundecitrus’ Franklin Behlau participated in the section of papers related to HLB, also known as citrus greening disease. Most of the papers provided updates on the disease situation in different locations, including Florida, China, India, Nepal, Indonesia, Iran and Brazil. Behlau discussed the …

recovery

What Past Hurricanes Reveal About Recovery

Daniel Cooperhurricane

After hurricanes hit citrus-producing regions in Florida, there is always one question included in the conversation: How bad is it? Experience has shown that the damage from hurricanes can take months to fully manifest. And recovery can take years, especially in the HLB-era. Within a week after Hurricane Milton making landfall on Oct. 9, the University of Florida Institute of …

diseases

Problematic Diseases Following Hurricanes

Daniel CooperDiseases, hurricane

Hurricanes bring immediate tree damage from high winds and torrential rainfall, but storms also can lay the groundwork for citrus disease problems. Soon after Hurricane Milton passed through citrus-growing regions, the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) hosted a webinar that covered various topics including post-storm disease management. CANKER Megan Dewdney, UF/IFAS associate professor of plant …

alico

Alico on Harvesting, Hurricanes and OTC Treatments

Daniel CooperHarvesting, hurricane

Alico Citrus in Florida harvested 3.1 million boxes of oranges for the fiscal year that ended Sept. 30, an increase of 14.7% from the prior year. That’s slightly higher than the 13.5% increase for the Florida citrus industry as a whole. HARVEST AND PRICES Alico harvested 1.194 million boxes of early- and mid-season oranges for juice in the recent fiscal …

orange

Brazil Releases Update to Orange Forecast

Daniel CooperBrazil, Crop Forecast

Fundecitrus and its cooperators released a second update to the 2024–25 orange crop forecast for Brazil’s São Paulo and West-Southwest Minas Gerais Citrus Belt. The Dec. 10 projection is 223.14 million 90-pound boxes. That’s an increase of 3.4% from September’s update but a 4% decrease from the initial May forecast of 232.38 million boxes. The forecast by orange variety, with …

success

CUPS Success Rate a Relief for Researcher

Daniel CooperCUPS

The success of citrus under protective screen (CUPS) in protecting Florida citrus from citrus greening, also known as huanglongbing or HLB, was not surprising to Arnold Schumann. The professor of soil fertility and water quality at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Research and Education Center is thankful research had yielded a temporary solution …

disease concerns

Disease Concerns for Georgia Growers

Daniel CooperDiseases, Georgia

Not all citrus disease concerns center around huanglongbing (HLB). While HLB disease garners much of the headlines because of its devastation to Florida’s citrus crop, growers in the cold-hardy citrus region should be mindful of other diseases that can devastate a crop if left untreated. Jonathan Oliver, University of Georgia (UGA) assistant professor and small fruits pathologist, highlighted some of …