Sponsored Content Question: Does the purity level of ReMedium TI® help aid the therapeutic response to citrus greening with trees that are under environmental stress? Answer: During the research and development phase of ReMedium TI®, several things were observed that pertain to this question. First, trees that have been under relatively severe stress do have slower uptake of ReMedium TI®. …
Sneak Peek: March 2026 Citrus Industry
Citrus and other specialty crops suffered large losses from the late January/early February freeze that walloped Florida. Get the details in the cover story of the March issue of Specialty Crop Grower magazine. The article provides the early estimates of damage by crop according to the Florida Department of Agriculture and Consumer Services. It also discusses efforts to secure financial …
Citrus State of the Industry Survey, Part 2: Planting Intentions
The 2025–26 State of the Citrus Industry Survey asked growers if they are planting and what their variety and rootstock selections are. It also surveyed growers on their sentiments about the future of citrus in Florida. Following are some highlights from the survey which was conducted in the fall of 2025. (See Part 1 of survey results here). Growers’ preference …
Influence of Rootstock on Growth, Productivity and Fruit Quality of Eureka Lemon
By Kim D. Bowman, Matt Mattia, Ranjeet Shinde and Flavia Zambon Profitability of the historic kings of citrus in Florida, sweet orange juice and fresh market grapefruit, has been severely reduced by the impact of huanglongbing (HLB) disease. Previous studies have demonstrated that lemon cultivars are generally more tolerant to HLB than sweet orange and grapefruit. Lemon trees continue cropping …
TJ BioTech and AgroSource Settle Patent Dispute
Sponsored Content Question: What is the status of the civil action that TJ BioTech filed against AgroSource? Answer: TJ BioTech LLC filed a civil action in August 2025 and received a preliminary injunction through the district court. This preliminary injunction had the effect of removing AgroSource’s product Rectify™ from the market. This past week, a confidential settlement was reached between …
Elevate Your Knowledge at the Florida Citrus Show
The Florida Citrus Show has an excellent day of education and networking planned for citrus and specialty crop growers. One of the most timely talks will cover post-freeze production considerations for citrus growers. Learn what Extension resources are available to growers to assist in their recovery efforts. Citrus Research and Field Trial (CRAFT) programs have been a lifeline to growers …
Growers Can Stay Productive in the Face of HLB
Despite declaring there will be no silver bullet for HLB, Ozgur Batuman in a Jan. 21 virtual seminar said growers using integrated pest management (IPM) tools “can stay productive.” However, the University of Florida Institute of Food and Agricultural Sciences associate professor also warned that producing citrus juice in Florida “will not be easy or cheap.” Oranges are by far …
CITRUS NURSERY SOURCE: Increased Interest in Fresh Utilization
By Peter Chaires Florida breeding programs have been largely focused on the juice stream in recent years. And for good reasons. Retaining the remaining processing capacity and infrastructure is of paramount importance to support Florida’s orange juice industry. Numerous sweet oranges have been released in hopes of achieving incremental improvements in HLB tolerance while improving juice quality. Likewise, there has …
Oxytetracycline Performance Addressed at Citrus Workshop
The University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) hosted a statewide citrus grower workshop in mid-January at the Southwest Florida Research and Education Center in Immokalee. The event offered a full day of education covering a wide range of topics, including management of pests, diseases, weeds and nutrients. Ute Albrecht, UF/IFAS associate professor of plant physiology, provided …
Grower Results With ReMedium TI® Mirror Researcher Results
Sponsored Content Question: Are there any updates on the performance of ReMedium TI® and citrus yield improvements? Answer: We are hearing from growers about groves in central and southern Florida where they are observing HLB recovery. I am getting reports from growers that have been steadfast users of ReMedium TI® that seem to be in agreement with much of the …
Grove Conditions, Infrastructure and Funding Addressed
In the recent Highlands County Citrus Growers Association (HCCGA) newsletter, Riley McKenna discussed conditions in groves, shrinking infrastructure and the importance of block grant funding. GROVE OBSERVATIONS McKenna, HCCGA president, stated that “faint hints of March bloom are already beginning to fill the air.” He added that the weather shows little indication of stabilizing or slowing tree growth, “which could …
Amending Oxytetracycline With Ascorbic Acid
By Lauren Fessler Mathews, Ana Redondo and Ozgur Batuman Trunk injections of oxytetracycline (OTC) have been proven to give huanglongbing (HLB)-affected citrus in Florida a boost in productivity and quality. However, previous studies have shown that even just six hours of exposure to heat and humidity in the grove can lead to OTC injections that no longer adequately suppress CLas …
Citrus State of the Industry Survey, Part 1: Grove Conditions
The citrus industry in the Southeast was spared from hurricanes in 2025. In Florida, will that in combination with HLB therapies help turn things in a positive direction for the 2025–26 citrus season? This year’s Citrus State of the Industry Survey aims to answer that question and gauge the current attitude of growers. This month, we share survey results on …
CITRUS NURSERY SOURCE: New University of Florida Varieties Introduced
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 …
What We’ve Learned From 20 Years of HLB Research in Florida
By Michael Rogers It has now been two decades since huanglongbing (HLB), or citrus greening, was first detected in Florida. That announcement in August 2005 changed everything for the Florida citrus industry. At the time, Florida citrus was still a global powerhouse. Less than a year earlier, HLB had been confirmed in Brazil, and we were aware of its devastating …
CRDF Considers Research Management Committee Recommendations
The Citrus Research and Development Foundation (CRDF) convened its November board of directors meeting to take up recommendations from its Research Management Committee. According to Rick Dantzler, CRDF chief operating officer, one of those recommendations was funding a proposal from Swadesh Santra, who is a professor of chemistry with the University of Central Florida. “This funding would allow Dr. Santra …
ReMedium TI®: Maximum Return on Investment
Sponsored Content Question: Are third-party research trials showing good improvement in HLB symptoms with the use of ReMedium TI®? Answer: There have been a number of research trials performed by the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) and U.S. Department of Agriculture-Agricultural Research Service (USDA-ARS) over the past couple of years. ReMedium TI® results have been …
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. …


























