By Peter Chaires It’s time to log some dates on the calendar. Citrus breeding teams have set dates for this year’s variety displays, field days and open houses. These events present excellent opportunities to learn about their priorities, methods and results. There are opportunities to sample the fruit of the latest promising selections, as well as tour test plantings and …
Oxytetracycline Aids Fruit Quality for Some Scions
A presenter at the recent Citrus & Specialty Crop Expo said oxytetracycline (OTC) trunk injections improved fruit quality in several citrus scions that were studied. The presenter was John Chater, assistant professor and citrus genetic improvement horticulturist with the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Research and Education Center. Chater opened his presentation with these …
Budding Arrival in Brazil Raises Citrus Greening Concern
According to Fundecitrus, the arrival of budding in orange groves marks a critical period for Brazilian citrus growers. The budding process intensifies with the onset of rain, requiring more rigorous control of the psyllid that feeds on buds and transmits the bacteria that causes citrus greening. The budding period, which runs from July to October in Brazil, accounts for between …
Research Renders Reasons to Replant
By J. Scott Angle, jangle@ufl.edu, @IFAS_VP Growing up in Polk County, Emily Worbington saw the groves disappearing. She passed more and more rooftops as she drove around Auburndale. In nearby Eagle Lake, Joe Volpe watched trees vanish, too. In fact, he tore out trees himself in his family’s century-old grove. “It broke my heart,” he says. PERSONAL PURSUITSWorbington and Volpe’s …
The Potential of Trunk Injection for Fresh Market Citrus
By John M. Chater Citrus tree trunk injection of antibiotics has been recently and widely used in Florida. The success of oxytetracycline (OTC) in sweet orange to mitigate huanglongbing (HLB or citrus greening) disease has been documented by the laboratory of Ute Albrecht, associate professor at the University of Florida. Some results suggest that OTC injection can improve Brix, ratio, …
From University Grove to Ice Cream Shop
Walking through rows of citrus groves on a sunny April morning, University of California Riverside (UCR) Dining Services employees picked fruit off trees and loaded it into the bed of a truck. A little more than a month later, fresh ice cream made from that citrus was being served in Scoops Ice Cream Shop at UCR. The citrus came from …
Sneak Peek: July 2025 Citrus Industry
A July Specialty Crop Grower magazine article explores the potential of trunk injection for fresh market citrus. While trunk injection of oxytetracycline has become a common practice in Florida citrus grown for juice, growers of fresh market varieties have expressed interest in this HLB-management tool. Therefore, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers are studying trunk …
Florida Department of Citrus Presents Replanting Strategy
At the June Florida Citrus Commission meeting, Florida Department of Citrus Director of Economic and Market Research Marisa Zansler presented a strategic overview of the economic case for citrus replanting. Her presentation focused on how targeted investments in grove restoration, supported by aligned Florida-centric marketing and infrastructure protection, can stabilize the industry and position it for long-term viability at a …
Millennium Block Research Update
Flavia Zambon, assistant professor with the University of Florida Institute of Food and Agricultural Sciences, recently provided an update about Millennium Block research at the Indian River Research and Education Center. The block, established in 2019–20, is a large-scale, 5,500-tree trial seeking HLB-tolerant citrus varieties. Zambon says some varieties in the trial are showing strong fruit attributes without the need …
Brassinosteroids Improve HLB-Affected Tree Health and Fruit Quality
By Fernando Alferez, Divya Aryal and Saoussen Ben Abdallah In the last few years, the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) citrus horticulture team at the Southwest Florida Research and Education Center (SWFREC) in Immokalee has performed several research trials in commercial farms and at the experimental farm at the SWFREC to elucidate the effect of …
Governor Names Florida Citrus Commissioners
Florida Gov. Ron DeSantis recently appointed five new members to the Florida Citrus Commission (FCC) and reappointed five members. The new appointees are Emma Ezell, Sean Frielich, Vernon Hollingsworth III, Daniel Hunt and Melanie Ressler. Steve Johnson, Carlos Martinez, William Poulton, Daniel Sutton and John “Patrick” Schirard were reappointed. The FCC is the governing board of the Florida Department of …
PIECES OF THE PAST: Polk County Roots Run Deep
By Brenda Eubanks Burnette I was honored this year to be part of the Vero Heritage Center and Indian River Citrus Museum’s “Deeply Rooted” event, which was the kick-off for Indian River County’s Centennial Celebration. It made me think of this year’s Florida Citrus Hall of Fame inductees. They all have something in common with deep roots — Polk County! …
Options for Planting Profitable Citrus Varieties
By Maegan Beatty On Feb. 18, Jude Grosser and Fred Gmitter hosted an online informational session on new citrus varieties and how to plant a profitable crop in the future. Both Grosser and Gmitter are part of the citrus improvement team at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Research and Education Center. Their main …
When to Apply Brassinosteroids to Improve Valencia Fruit Quality
By Fernando Alferez and Divya Aryal Like the work being done with Hamlin sweet orange, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers are studying the effect of brassinosteroids (BRs) on the internal maturation of Valencia sweet orange fruits. The conditions of the treatments are the same as in Hamlin: A treatment of 186 milliliters of BR …
Grapefruit Production in South Africa
South African grapefruit production is expected to rise slightly in 2024–25. The U.S. Department of Agriculture Foreign Agricultural Service (USDA FAS) is forecasting a 1% increase from the prior year to 425,000 metric tons (MT). PLANTINGS Grapefruit acreage in South Africa has been shrinking since 2020–21, reflecting a downward trend in global consumption. The area planted in 2024–25 will likely …
Update on Korea’s Citrus Production
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 …
Florida Citrus Decline Detailed
A December Florida TaxWatch report, The Continuing Decline of Florida’s Citrus Industry, highlights the causes of the industry’s demise in recent decades. Edited excerpts follow: In the last 20 years, Florida’s total citrus production has decreased by more than 90%, from around 300 million boxes in 2003–04 to just 20 million boxes in 2023–24. The 2022–23 season was the worst …
Psyllid Insecticides Effective in Brazil’s New Citrus Regions
Citrus growing is migrating to additional areas in Brazil, such as the Triângulo Mineiro region, the northwest of of São Paulo and Mato Grosso do Sul. For this reason, Fundecitrus began testing insecticides in these areas and observed that some products, to which the HLB-spreading psyllid is often resistant, performed well in the initial evaluation. Fundecitrus researcher Marcelo Miranda said …
Alico on Harvesting, Hurricanes and OTC Treatments
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 …
Adams, Graham and Richey to Join Hall of Fame
The late Charles W. Adams, James H. “Jim” Graham and Daniel R. “Dan” Richey will be inducted into the Florida Citrus Hall of Fame March 28, 2025. ADAMS Adams (1879–1945) was a partner in Adams Packing Association and Growers Fertilizer Corporation. He impacted the citrus industry with his progressive ideas for growth. Adams moved from Michigan to Florida in 1911 …