Although trunk injection of oxytetracycline hydrochloride (OTC-HCl) has received much recent press for its promise in managing HLB, there is still no silver bullet for the devastating disease. That was part of plant pathologist Ozgur Batuman’s message at a Dec. 10 seminar addressing HLB and other citrus diseases that may exacerbate HLB’s effects on trees. “There is no single effective …
Citrus Growers Get Update on Trunk Injection
The Gulf Citrus Growers Association (GCGA) hosted a luncheon on Dec. 7 at the Southwest Florida Research and Education Center featuring a presentation by Tom Johnson, chief executive officer of TJ BioTech. The company is the manufacturer of ReMedium TI, the widely discussed formulation of oxytetracycline hydrochloride (OTC-HCI) that has shown promise as a treatment for HLB. The product is …
Citrus Industry Weighs In on Oxytetracycline Trunk Injection
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 …
Advantages and History of Trunk Injection
Plant physiologist Ute Albrecht recently gave a presentation on increased fruit yield and other apparent benefits of injecting the antibiotic oxytetracycline into citrus tree trunks. The University of Florida Institute of Food and Agricultural Sciences researcher also discussed other advantages that trunk injection provides. These advantages include: Precise delivery of materials Elimination of spray drift Reduced risk for worker exposure …
Trunk Injection for HLB: Pros and Con
The pros of injecting the antibiotic oxytetracycline (OTC) into citrus tree trunks to combat HLB appear to be numerous, including increased fruit yield, according to scientist Ute Albrecht. On the other hand, the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researcher only discussed one con, but it was a big one. “Trunk injections cause injury, and long-term …
Trunk Injection Could Deliver the Kill Shot to HLB
There are many materials that will kill the bacteria (Candidatus Liberibacter asiaticus) that causes HLB. The challenge has been getting these materials to the place where the bacteria lives in citrus trees — the phloem. Some believe trunk injection might do the trick, but it is an expensive and labor-intensive practice that has limited any breakthroughs so far. During the …
CRDF Update: Maximizing Funds and Testing Tree Injection
The Citrus Research and Development Foundation (CRDF) board of directors met on Sept. 28. Rick Dantzler, CRDF chief operating officer, shared highlights from the meeting. “The primary action was the endorsement of the idea to pull together a group of plant breeders from across the country to help us decide where to invest our funding in plant improvement,” said Dantzler. …
Principles and Risks of Trunk Injection for Delivery of Crop Protection Materials
By Ute Albrecht and Leigh Archer Trunk injection is a targeted delivery of materials into the stem or trunk of trees as an alternative to spraying or soil drenching. It is practical for disease and pest management in high-value forest trees and ornamental plants where aerial applications are problematic because of environmental and human health-related concerns. Interest in using the …
Antibiotic Delivery Methods: Trunk Injection vs. Foliar Application
By Nabil Killiny and Christopher Vincent The citrus industry has suffered numerous setbacks over the past 20 years because of the devastating effects of huanglongbing (HLB) disease. Many options for controlling the disease are being investigated to make groves as productive as possible under the current HLB pressure. Even small improvements in tree health or yield of diseased trees may …
Trunk Injection Considerations
A presentation titled “Trunk Injection: Difficulties and Considerations” is one of the first from the cancelled 2020 Florida Citrus Growers’ Institute to become available online. The annual event was cancelled because of COVID-19. The University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) is working to make additional presentations that were intended for the Florida Citrus Growers’ Institute available …
Oxytetracycline Sprays vs. Trunk Injections
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 …
Don’t Miss the Florida Citrus Show!
By Robin Koestoyo University of Florida citrus and vegetable researchers will present their latest scientific findings at the 78th Florida Citrus Show on April 3. A lineup of educational seminars will build on the show’s extraordinarily successful 77th show, organized by AgNet Media, an agricultural news communications leader. This year’s event will feature a tailgate-style trade show that includes breakfast …
A Fresh Approach
Despite the challenges of the Florida citrus industry, Feek Family Citrus continues to successfully grow, pack and ship fresh fruit. In an effort to discourage his son from working in the citrus business, Doug Feek’s father gave him all the worst jobs to do in the family’s small grove. “He wanted me to save my back and work a desk …
CRAFT Program Promotes New Planting and Knowledge
Since its founding in 2019, the Citrus Research and Field Trial (CRAFT) program has been responsible for the planting of just under 10,000 acres of new trees. This includes about 6,000 acres of solid-set groves and just shy of 4,000 acres of resets. CRAFT is a first-of-its-kind program and considered an innovation among funding agencies needed to support such efforts. …
Sneak Peek: April 2024 Citrus Industry
See what’s new in citrus in the April issue of Citrus Industry magazine. In this month’s cover story, an established company gets a new name. As the next generation joins the business, learn how DLF International has transitioned to Feek Family Citrus in Fort Pierce, Florida. Trying new things and carefully monitoring costs are a few of the ways this …
Get an Assist in Gauging Tree Health
If there was ever a time when Florida citrus growers would want to get a better read on tree health, this season might it. A significant number of acres have been treated with new trunk-injection therapies, and growers have been monitoring groves to observe the impact of the treatments. Growers have traditionally relied on visual observation to get a sense …
Florida Citrus Show – Seminar
HomeAttendSeminarsHotelExhibitSponsor2024 Seminar ProgramWednesday, April 3, 2024General Session- Indian River Research and Education Center Auditorium 8:45 a.m. Welcome Frank Giles, AgNet Media, Scott Adkins, USDA Ron Cave, UF/IFAS 9:00 a.m. Federal Agriculture Priorities in 2024 Mike Joyner, Florida Fruit & Vegetable Association 9:30 a.m. TBA 10:00 a.m. 4Roots Farm’s Reverse Demand Program Driving the Buy Local Movement Tommy Ward, 4Roots Farm …
2024 Seminar Program
HomeAttendSeminarsHotelExhibitSponsorSeminar schedule times are subject to change.Wednesday, April 3, 20248:00 a.m. – 12:30 p.m. – Registration at Trade Show EntranceDon’t wait in line, pre-register today!8:00 a.m. – 9:30 a.m. – Breakfast in Trade Show Hall8:00 a.m. – 2:00 p.m. – Trade Show OpenVisit exhibitor booths!11:00 a.m. – 2:00 p.m. – Tailgate PartyTry exhibitor’s tailgate food and vote for your favorite!morning …
Highlands Growers Learn More About Crop Transformation Center
The Highlands County Citrus Growers Association hosted its annual meeting and banquet in early March in Sebring, Florida. The event was well attended. Growers were mostly in good spirits, hoping that trunk-injection therapy will be the bridge to the next breakthrough to return citrus production and quality to viable levels. Most believe the ultimate HLB solution will come in the …
Find UF/IFAS Citrus Resources Online
By Michael E. Rogers Were you unable to attend a recent University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) event and want to hear what you missed? Many past presentations are available online. The UF/IFAS Citrus Research Website archives presentations made by UF/IFAS faculty at various meetings across the state. These can be found by scrolling down and …


























