TJ BioTech LLC has announced that, as of June 11, 2026, ReMedium TI has received a full Section 3 label and registration from the U.S. Environmental Protection Agency, along with state approval from the Florida Department of Agriculture and Consumer Services. The approved label allows for two consecutive years of treatment, starting with the 2026–27 season, followed by a one-year …
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 …
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 …
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. …
Making the Most of ReMedium TI® Injections
Sponsored Content In this special series, Tom Johnson, owner of TJ BioTech, tackles questions about optimizing trunk-injection applications to treat HLB. Q: How do I get the best performance out of my ReMedium TI® injections? Tom Johnson: Getting the most out of your ReMedium TI® injections begins by properly evaluating individual tree size and tree health. While that may sound …
ReMedium TI Receives Exemption From Two-Year Restriction on Applications
ReMedium TI® has received a special local need label from the Florida Department of Agriculture and Consumers Services (FDACS). The label will remove the requirement that applications to treat citrus greening (HLB) cannot be made beyond two years in a row. For Florida citrus growers, this means those who have applied ReMedium TI® over the past two seasons now will …
Guidelines for ReMedium TI Use
Trunk injection of the oxytetracycline hydrochloride formulation ReMedium TI for HLB treatment was given final clearance Jan. 11. The product began moving into the Florida citrus industry that same day. Consequently, the product’s manufacturer and the Citrus Research and Field Trial (CRAFT) Foundation both issued reminders and recommendations about the product’s use. Manufacturer TJ BioTech, LLC suggested the following things …
Panel Discussion on Optimizing OTC Performance at Citrus & Specialty Crop Expo
Growers received welcomed news in June when trunk-injection therapy of oxytetracycline (OTC) was cleared for continued applications next season. Some growers have said the treatment has helped save groves from loss due to HLB. Ute Albrecht, University of Florida Institute of Food and Agricultural Sciences associate professor, has been one of the lead researchers on OTC applications and its effectiveness. …
A Pure Product Pays Dividends
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®. …
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 …
Micronutrients Mandatory to HLB Recovery
Sponsored Content Question: Now that we have ReMedium TI® as a therapy to treat HLB, what else can a grower do to speed recovery? Answer: Feed the trees. I know that answer is an oversimplification, but it is the correct answer. Your groves have been struggling for years because of the root damage from HLB. While growers can’t make up …
Fruit Quality Improvement Takes Time
Sponsored Content Question: Previous questions have been asked about increases in yield and quality of the citrus crop as groves begin to recover from HLB. Why does it take additional time to get quality to improve? Answer: The ability of any crop to produce both high yield and high quality is an agronomic function of a plant’s ability to intake …
The Road to HLB Recovery
Sponsored Content Question: There has been discussion that HLB recovery will be seen in yield first and quality second. Is that happening? Answer: It is still too early to tell exactly what the numbers will look like for the 2025–26 harvest. However, early harvest reports are coming in, and they seem quite encouraging. There is a report on a grove …
What You Need to Know for the 2025–26 Trunk-Injection Season
Sponsored Content Q: With the 2025–26 trunk-injection season near, what steps can be taken to make the ReMedium TI® injections the most effective for increased fruit yield and quality? A: The basics of the injection are still the same: There is one factor that is new in the injection realm. Research conducted at the University of Florida shows that injection …
Influence of Rootstock and OTC Injection on Valencia Yield
By Kim D. Bowman, Ute Albrecht and Caroline Tardivo Profitability of citrus in Florida has been severely reduced by the impact of huanglongbing disease (HLB). Previous studies have demonstrated that rootstock selection and injection of established trees with oxytetracycline hydrochloride (OTC) can both significantly improve the health, cropping and fruit quality of trees affected by HLB. However, neither a superior …
Survey Shows Oxytetracycline Use and Benefits
A 2024 survey showed that most Florida citrus growers used oxytetracycline (OTC) trunk injection on most of their acres, resulting in improved yield and reduced fruit drop. Tara Wade, associate professor at the University of Florida Institute of Food and Agricultural Sciences Southwest Florida Research and Education Center, presented survey results at the recent Citrus & Specialty Crop Expo. OTC …
Recommendations for Oxytetracycline Injections
Three University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers recently issued the document Suggested Use Pattern of Injectable Antimicrobials for Huanglongbing (HLB) Management. The authors are Ute Albrecht, associate professor of horticulture; Ozgur Batuman, associate professor of plant pathology; and Megan Dewdney, associate professor of plant pathology. The antimicrobials for Florida citrus are ReMedium TI and Rectify; …
Oxytetracycline Efficacy Impacted by Exposure to Field Conditions
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 …
Weathering the HLB Storm
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 …
Root Recovery Precedes Production Gains
Sponsored Content In this special series, Tom Johnson, owner of TJ BioTech, tackles questions about optimizing trunk-injection applications to treat HLB. Q: There have been some mixed results from OTC injections depending on geography within Florida. Is the citrus industry in Florida experiencing a recovery from the effects of HLB or not? Tom Johnson: Since the release of ReMedium TI® …



















