By Peter Chaires In July, the Florida Foundation Seed Producers Inc. (FFSP) advised the Florida Department of Citrus (FDOC) and the Florida Citrus Commission (FCC) of eight newly released University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) citrus varieties that may fall under F.S. 601.13 (4). This state statute provides the FCC with a first option to obtain …
Whitmore Farm Field Day Returns After Hurricane Milton
In early December, the U.S. Department of Agriculture (USDA) hosted its annual field day at the A.H. Whitmore Foundation Farm in Groveland, Florida. The field day was canceled last year due to Hurricane Milton. The storm brought 110 mph winds that stripped trees of fruit and caused other damage. The field day showcased various rootstocks and varieties that have been …
Citrus Extension Agents Encourage Growers to Engage With Their Services
Florida citrus Extension agents are a conduit to growers, connecting them with the educational and support resources of the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS). Recently, two of those agents held stakeholder meetings to seek input from growers on areas where they would like to see more education and assistance from UF/IFAS. Alissa Hevesh is the …
Understanding Acclimation and Protecting Trees From Freeze
By Davie Kadyampakeni, Chris Oswalt and Muhammad A. Shahid With the onset of cooler temperatures, citrus trees cease active growth and become quiescent. This continued quiescence at lower temperatures results in a subsequent increase in cold hardiness, known as acclimation. Citrus trees proceed through many changes during acclimation, including: The above factors combine to increase the ability of citrus tissues …
Eagle Lake Field Day Highlights Conventional Breeding Potential
The University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Research and Education Center (CREC) citrus breeding team hosted a field day on Nov. 19 at the UF/IFAS Eagle Lake Block. The Eagle Lake Block is a 30-acre property that was gifted to CREC as part of the Jim Hughes estate. The grove tour featured several selections being …
CITRUS NURSERY SOURCE: NVDMC’s Research Initiatives for 2025–26
By Peter Chaires Last month’s Citrus Nursery Source article promised additional details on New Varieties Development & Management Corp.’s (NVDMC) 2025–26 sponsored projects. While there is only space for general summaries, it is important to highlight the areas of focus for each research team, and the emphasis on short-term benefits while continuing to build a foundation for the future. NVDMC …
ReMedium TI® Approved for Fourth Year in Florida
The Florida Department of Agriculture and Consumer Services recently approved TJ BioTech’s request for a Section 24(c) registration related to a fourth year of use of the oxytetracycline (OTC) product ReMedium TI®. The product is a systemic injectable antimicrobial for the control or suppression of huanglongbing (HLB) disease in citrus. The Section 24(c) registration is a special local need registration. …
What to Consider When Replanting a Grove
By Edwin Gutierrez-Rodriguez and Bosques Jonael Replanting a citrus grove can be an exciting prospect, but it’s not as simple as swapping trees. New cultivars, for example, may require a different setup. Here are some aspects to consider before jumping in: First steps: Newly released cultivars and rootstocks as wells as the Citrus Research and Field Trial programs are refreshing the …
Millennium Block Field Day Set for Nov. 6
The University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Indian River Research and Education Center (IRREC) will host its annual Millennium Block Field Day Nov. 6 from 9 a.m. to noon. The field day will showcase the center’s emphasis on research to find a solution to citrus greening disease. The IRREC is located at 2199 South Rock Road …
Dundee Citrus Growers Association’s Callaham Honored
Steven Callaham, executive vice president and chief executive officer of Florida’s Dundee Citrus Growers Association (Dundee CGA) for the last 22 years, was recently honored by The Packer. He was recognized as one of the 25 fresh produce industry innovators and agents of change. Callaham graduated from the University of Florida College of Agriculture and joined Dundee in 1999. He …
What’s Working in Griffin’s Grove
Not far from the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Research and Education Center (CREC) in Lake Alfred, Jason Griffin owns and operates a commercial citrus grove. While commercial in nature, the grove also has become a working experiment for the CREC citrus breeders. Griffin has worked closely with UF/IFAS citrus breeder Jude Grosser to …
Florida Citrus Commission Exercises Rights to Varieties
The Florida Citrus Commission (FCC) on Sept. 17 approved a Florida Department of Citrus (FDOC) request to exercise the right to eight new varieties from the Florida Foundation Seed Producers (FFSP). These varieties were developed by the University of Florida Citrus Research and Education Center Citrus Breeding Program. The FCC, which governs the FDOC, will retain exclusive rights to the varieties …
All In For Citrus Podcast, September 2025
Varieties and rootstocks are the topics of the September episode of the All In For Citrus podcast. Earlier this month, a field day was held in Jason Griffin’s grove near Lake Alfred, Florida. He is collaborating with the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) to evaluate several rootstock/scion combinations developed by UF/IFAS citrus breeders. Griffin has …
CITRUS NURSERY SOURCE: Upcoming Opportunities To Tour and Taste
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 …
Genetic Transformation of Citrus: Timelines and Progress
Researcher Manjul Dutt told a Citrus & Specialty Crop Expo audience in August why it can take up to 14 years to get a genetically modified citrus tree from discovery to commercial release. He also discussed the transgenic citrus progress at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS), where he is an assistant professor at the …
Emerging Varieties Program Offers Opportunities for Growers
There has been high interest in the Citrus Research and Field Trial (CRAFT) Foundation programs recently as a new cycle of applications has been bolstered by record funding of more than $100 million from the Florida Legislature. This includes the introduction of a new CRAFT program called the Emerging Varieties Program. It will provide citrus growers with a $40 per …
Sneak Peek: September 2025 Citrus Industry
The September issue of Specialty Crop Grower features an article on the Citrus & Specialty Crop Expo’s extensive educational program. Read highlights of what growers learned over the two-day Tampa event and hear more in the August episode of the All In For Citrus podcast. The Citrus Industry section of the magazine begins with an article detailing two big announcements …
CRAFT Informational Meetings Draw Big Interest
With a record amount of funding from the Florida Legislature, the Citrus Research and Field Trial (CRAFT) Foundation hosted a road show in early September that included stops in Fort Pierce, Lake Placid and Lake Alfred to provide information about grower programs. All three stops were well attended by growers interested in learning about the latest cycle of funding. With …
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 …
Expo Delivers Research Updates and Practical Tools for Growers
By Michael E. Rogers The 2025 Citrus & Specialty Crop Expo took place Aug. 20–21 at the Florida State Fairgrounds in Tampa. The event brought growers, researchers and industry professionals together for two full days of education and discussion. This year’s program featured what may have been a record number of University of Florida Institute of Food and Agricultural Sciences …





























