Trunk Injection Not a Silver Bullet for HLB

Josh McGill Diseases, HLB Management

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

Josh McGill HLB Management

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

Josh McGill HLB 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 …

Advantages and History of Trunk Injection

Josh McGill HLB Management, Pesticides

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

Josh McGill HLB Management, Pesticides, Research

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

Josh McGill HLB Management, Research

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

Tacy Callies CRDF

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

Tacy Callies Pesticides, Research

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

Tacy Callies Research

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

Ernie Neff CEU, Research

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 …

Florida orange

Oxytetracycline Sprays vs. Trunk Injections

Daniel Cooper Citrus 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 …

panel

Panel Discussions Highlight Florida Citrus Show Seminars

Daniel Cooper Breeding, HLB Management

A pair of panel discussions during the citrus seminars at the Florida Citrus Show gave growers the opportunity to engage with experts on top-of-mind topics. BREEDER RECOMMENDATIONS The citrus seminar program started with a discussion among citrus breeders moderated by Flavia Zambon, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) assistant professor at the Indian River Research and …

irrigation

Podcast Addresses Recent Irrigation Research

Daniel Cooper All In For Citrus Podcast, Irrigation, PGRs

It was a dry April in most of Florida’s citrus-production areas. That means irrigation is vital to keep HLB-infected trees adequately watered. The drier months of the year from February through May are when flowering and fruit set are occurring. If trees are stressed due to water deficit during this time, they are more likely to suffer fruit drop and …

mixing and loading

Proper Mixing and Loading of Pesticides

Daniel Cooper CEU

By Amir Rezazadeh Editor’s note: This article grants one continuing education unit (CEU) in the Core category toward the renewal of a Florida Department of Agriculture and Consumer Services restricted-use pesticide license when the accompanying test is submitted and approved. The primary pesticide handling tasks are mixing and loading. These are also the most harmful aspects of pesticide application. Because …

crdf

CRDF Board Passes Preliminary Budget and Funds Projects

Daniel Cooper CRDF

During its April meeting, the Citrus Research and Development Foundation (CRDF) board of directors passed its preliminary budget for the next fiscal year. It allows $1.4 million in new project funding. “This amount should be enough to fund the projects the board wishes to fund from our primary request for proposals, which are aimed at answering practical questions growers have …

may

Sneak Peek: May 2024 Citrus Industry

Daniel Cooper HLB Management, hurricane, Sneak Peek

Inside the May issue of Citrus Industry magazine, you’ll find photos and coverage from the Florida Citrus Show. The annual grower-focused event was held in Fort Pierce on April 3. A high point of the day was the outdoor trade show of exhibitors serving an array of tailgate-style foods to attendees. Educational programs included a general session on current agricultural …

Grove First

Grove First Project Seeks More Grower Cooperators

Daniel Cooper HLB Management, Research

The Grove First project plans to expand next year and is seeking additional growers as cooperators. The project tests molecules directly in the field for their ability to treat HLB via trunk injection. The Grove First project differs from the common practice of starting HLB research in the laboratory, then moving to the greenhouse to be confirmed before going into …

April

All In For Citrus Podcast, April 2024

Daniel Cooper All In For Citrus Podcast

April was a busy month for citrus events. The Florida Citrus Show was held April 3 in Fort Pierce followed by the Florida Citrus Growers’ Institute in Avon Park on April 9. These events were a topic of discussion between All In For Citrus podcast host Frank Giles and Michael Rogers, director of the University of Florida Institute of Food …

grower

Grower Panel: OTC a Net Positive So Far

Daniel Cooper Events, HLB Management

Florida Citrus Mutual recently hosted a roundtable discussion about the performance of trunk-injection therapies as growers are making their second round of applications. The grower participants included Jim Snively, Southern Gardens Citrus; Glenn Beck, Beck Bros. Citrus and Wes Soria, Sorrells Citrus. University of Florida scientist Ute Albrecht also joined the panel to provide a research update. Rick Dantzler, chief …

research

Evolving Research Priorities for Florida Citrus

Daniel Cooper CRDF, Research

Last week, growers convened in Avon Park for the annual Florida Citrus Growers’ Institute. The daylong seminar program provides updates on the latest research in the fight against HLB and other production issues facing growers. Rick Dantzler, chief operating officer of the Citrus Research and Development Foundation (CRDF), presented an update on the organization’s research priorities. He noted that CRDF …