Survey Shows Oxytetracycline Use and Benefits

Tacy CalliesCitrus Expo, HLB Management, Survey

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 …

fruit quality

Oxytetracycline Aids Fruit Quality for Some Scions

Daniel CooperCitrus Expo, HLB Management

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 …

injections

Recommendations for Oxytetracycline Injections

Daniel CooperHLB Management

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

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 …

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 …

survey

Survey Asks Growers About Oxytetracycline Trunk Injection

Daniel CooperSurvey

University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers are conducting a grower survey about the use of oxytetracycline (OTC) trunk injection in citrus production. The researchers want to learn about the adoption, efficacy and economic feasibility of OTC injections. The survey, which can be accessed here, will take approximately 15 minutes to complete. It should be completed …

oxytetracycline

Tips for Trunk Injection of Oxytetracycline

Daniel CooperHLB Management, Tip of the Week

By Ute Albrecht and Ozgur Batuman Follow these important tips for proper trunk injection of oxytetracycline as a citrus therapeutic. APPLICATION TIMING INJECTION TECHNIQUE ADDITIONAL ADVICE Ute Albrecht (ualbrecht@ufl.edu) and Ozgur Batuman (obatuman@ufl.edu) are associate professors at the University of Florida Institute of Food and Agricultural Sciences Southwest Florida Research and Education Center in Immokalee. Sponsored ContentTake Advantage of Rising …

How Much Yield Is Needed to Offset the Cost of Injecting Trees With Oxytetracycline?

Josh McGillEconomics, HLB Management

By Ariel Singerman Citrus growers in Florida are now allowed to inject their trees with oxytetracycline (OTC) to try to control Candidatus Liberibacter asiaticus and/or suppress citrus greening. The use of OTC is expected to improve the trees’ health and, in turn, increase yield. In this article, cost estimates are used to address the question of what yield response is …

Research Update on Oxytetracycline Injection for HLB Management

Josh McGillHLB Management, Research

By Ute Albrecht The German scientist Paul Ehrlich pioneered the research for “magic bullets” — chemicals that could kill a microorganism but did not harm the patient. He also coined the term “chemotherapy” and paved the way for developing synthetic drugs. The first synthetic antibiotic (the first sulfa-type antibiotic) to successfully treat human bacterial diseases without major side effects was …

Latest CRDF Funding Includes Oxytetracycline Hydrochloride Projects

Josh McGillCRDF, Research

The Citrus Research and Development Foundation (CRDF) board of directors convened its March meeting with a busy agenda, addressing fast-moving current events. Discussion focused on newly approved oxytetracycline hydrochloride (OTC-HCl) trunk-injection products currently being applied in groves. The board funded a project to measure the impact of OTC-HCI applications on the Asian citrus psyllid (ACP). Specifically, the study will determine …

Citrus Agent Discusses Oxytetracycline Hydrochloride Products

Josh McGillHLB Management, Pesticides

University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) multi-county citrus Extension agent Ajia Paolillo recently provided information about two commercial oxytetracycline hydrochloride products approved for use against HLB. TJ Biotech LLC was the first company to receive approval from the Environmental Protection Agency (EPA) for trunk injection of this formulation. EPA granted TJ Biotech a Federal Insecticide, Fungicide, …

Injectable Oxytetracycline Registered

Josh McGillPesticides

The Florida Department of Agriculture and Consumer Services (FDACS) on Oct. 28 granted a 24(c) special local need registration for the injection of ReMedium TI for the control or suppression of HLB. The TJ BioTech product is oxytetracycline (OTC) hydrochloride, an antibiotic. “EPA (the federal Environmental Protection Agency) has 90 days to object, but it is my understanding that growers …

Oxytetracycline Product Promises Timely Relief From HLB

Josh McGillHLB Management

What may be the closest thing yet to a timely silver bullet for HLB was discussed Oct. 26 at Lake Alfred’s Citrus Research and Education Center. Josh Steinbronn, director of research and development at TJ BioTech, said trunk injection of his company’s ReMedium TI oxytetracycline product suppresses Candidatus Liberibacter asiaticus (CLas), the causal agent of HLB. He added that injection …

Citrus Industry Weighs In on Oxytetracycline Trunk Injection

Josh McGillHLB Management, Pesticides

Trunk injection of oxytetracycline (OTC) has been proposed as a means to manage HLB in citrus. University of Florida research shows OTC injections increase yield and fruit quality but cause tree injury. TJ BioTech expects to receive EPA registration in late fall of this year for an OTC product that could be injected into trees. Florida citrus industry growers and …

Adjuvants Did Not Improve Delivery of Foliar-Applied Oxytetracycline

Tacy CalliesCitrus Expo

In 2016, federal authorities began allowing Florida citrus growers to spray oxytetracycline solutions on their trees to combat citrus greening disease. Since then, researchers have been investigating oxytetracycline delivery methods. In a Citrus Expo presentation, Christopher Vincent, assistant professor of horticultural sciences at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Research and Education Center, shared …

Florida orange

Oxytetracycline Sprays vs. Trunk Injections

Daniel CooperCitrus Greening, HLB Management, Industry News Release, Research

Since 2016, federal authorities have allowed Florida citrus growers to spray oxytetracycline solutions on their trees to combat citrus greening disease. A newly published University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) study suggests that the bactericide would be more effective if it were injected into citrus tree trunks, a practice not currently approved under U.S. law. Citrus …

Georgia growers

Georgia Growers Tour Brazil’s Citrus Industry

Daniel CooperBrazil, Georgia

A recent tour of Brazilian citrus provided Georgia growers with valuable information on how to capitalize on production amid huanglongbing (HLB) disease. Lindy Savelle, executive director of the Georgia Citrus Association and owner of JoNina Farm, was one of seven producers who attended the week-long tour this fall. One of the main observations was Brazil’s strong production despite the prevalence …

ReMedium TI®

ReMedium TI®: Maximum Return on Investment

Daniel CooperHLB Management, OTC Expert

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®

ReMedium TI® Approved for Fourth Year in Florida

Daniel CooperHLB Management

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. …

positive

Positive Signs Being Seen in Florida Groves

Daniel CooperProduction

In the November Highlands County Citrus Growers Association newsletter, President Riley McKenna and Executive Director Ray Royce reported mostly positive signs they’ve been seeing in groves. MCKENNA “As the month progresses, so have the cooler nighttime temperatures. This cold front marks an important shift moving forward into our early harvest season,” said McKenna. “It brings both anticipation for fruit ripening …