CRDF Changes Funding Procedures

Josh McGillCRDF

The Citrus Research and Development Foundation (CRDF) had a busy board of directors meeting in March. Rick Dantzler, CRDF chief operating officer, says the board utilized a new approach in seeking and approving research projects during the meeting. “The board advanced a number of research topics through the vehicle of ‘directed research’ where we negotiate with specific scientists who we …

CRDF Funds Fruit Drop Research, Hears Antibiotic Presentations

Josh McGillDiseases, Research

The Citrus Research and Development Foundation (CRDF) governing board on Jan. 25 approved a project aimed at reducing fruit drop by using potassium, zinc, gibberellic acid and the herbicide 2,4-D in different timing scenarios. The funding will allow University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researcher Fernando Alferez to finish two years of work that CRDF Chief …

CRDF Update: Maximizing Funds and Testing Tree Injection

Tacy CalliesCRDF

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 CalliesPesticides, 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 CalliesResearch

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 …

Sneak Peek: April 2021 Citrus Industry

Tacy CalliesSneak Peek

Ask any Florida citrus grower what the top priority is, and you’ll likely get the same answer: Keeping HLB-affected trees productive and profitable. The April issue of Citrus Industry magazine provides research on production practices aimed to meet this goal. Adjusting the amount of sunlight plants receive has proven to increase citrus tree health and yield. University of Florida Institute …

Citrus Researcher Earns National Award

Tacy CalliesAwards, Industry News Release

Researcher. Scholar. Change agent. Nian Wang, a professor at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS), has been recognized for all of these roles with an award from the American Phytopathological Society (APS) at its 2020 annual meeting. Wang received the Ruth Allen award, which honors people who have made an outstanding, innovative research contribution that has …

Antibiotics Used in Citrus

Tacy CalliesBactericides

A new University of Florida Institute of Food and Agricultural Sciences Extension document, Antibiotics in Crop Production, was published in May by Leigh Archer, Ute Albrecht and Pamela Roberts. The authors found that the use of antibiotics has resulted in the successful control of bacterial diseases in some crops but not in others. The publication includes research information on antibiotics …

bactericides

Bactericides for Psyllids and HLB

Ernie NeffBactericides, HLB Management, Psyllids

Many growers in recent years have used bactericides in an effort to reduce HLB infection in their groves. University of Florida Institute of Food and Agricultural Sciences researcher Kirsten Pelz-Stelinski reports on use of bactericides to reduce both the bacteria that causes HLB and the psyllids that spread it. In greenhouse studies, she reports, bactericides appeared to offer “some reduction” …

psyllids

Research on Heat Treatment, Bactericide Uptake

Ernie NeffBactericides

A University of Florida Institute of Food and Agricultural Sciences researcher reports on an experiment to see if treating trees with heat would enhance the uptake of a bactericide commonly used for HLB. “We treated trees that were not HLB infected, so this wasn’t looking at the efficacy of heat treatment against HLB,” says scientist Christopher Vincent, who works at …

Citrus Expo

Bactericide Use: an Update at Citrus Expo

Tacy CalliesNews from our Sponsor

By Harold Browning Column sponsored by the Citrus Research and Development Foundation Use of bactericides to reduce disease levels in infected trees continues to be a topic of debate in Florida citrus. Now in the second season of grower use, many growers are continuing to use the three products containing oxytetracycline or streptomycin within their seasonal spray programs. The Citrus …

HLB

Bactericide Grower Trials for HLB ‘Extremely Variable’

Ernie NeffBactericides, HLB Management

Stephanie Slinski, Citrus Research and Development Foundation bactericide project manager, discussed grower trials on the use of bactericides for HLB at the Florida Citrus Growers’ Institute in Avon Park on April 4. She summarizes the presentation. “We have a series of field trials set up throughout Florida to test the efficacy of oxytetracycline and streptomycin just in the grower program,” …

Injecting Citrus Tree Trunks with Bactericide May Help Stem Greening

Josh McGillCitrus

By: Brad Buck GAINESVILLE, Fla. — A chemical treatment known as a bactericide could help preserve citrus trees from the potentially deadly and costly greening disease, a new University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) study shows. Citrus is estimated as a $10.9 billion-a-year industry in Florida and the finding could be key to helping the state’s …

Bactericide Survey Results Summary

Josh McGillBactericides, Citrus Greening

By Stephanie Slinski and Harold Browning (Editor’s note: Click on the graphs throughout the article to enlarge them.) Bactericides have been available to growers as a new tool to improve the health of HLB-infected trees since early March 2016. This use has been under a crisis declaration from the Florida commissioner of agriculture, but on August 15 of this year, …

bactericides survey

Sparks Urges Growers to Take Bactericide Survey

Ernie NeffBactericides, Citrus Greening

Florida Citrus Mutual CEO Mike Sparks tells why it’s important for Florida citrus growers to participate in a bactericide survey. The survey was developed by the Citrus Research and Development Foundation and is being administered by AgNet Media. Even growers who are not using the bactericides yet are asked to participate. The purpose of the survey is to collect data …

Help Fight HLB, Take the Bactericide Survey

Josh McGillBactericides, Citrus Greening

The Citrus Research and Development Foundation (CRDF) has selected AgNet Media, owner of Citrus Expo and Citrus Industry magazine, to administer a grower survey on bactericide use. CRDF is asking that all Florida citrus growers participate in the survey so that the industry can gain a better understanding of how these products are being used against HLB. Three commercial bactericide …

Grower Participation Needed for Short Bactericide Survey

Tacy CalliesBactericides, Citrus Greening

It has been approximately two months since the crisis declaration was issued that allows Florida citrus growers to use bactericides to combat HLB. Three commercial products containing the two active ingredients, streptomycin and oxytetracycline, are available for use. Growers are implementing season-long plans for application of these materials to suppress HLB. A range of options exist for use of these …

Suggested Use Patterns for Antibacterial Products on Citrus

Kelsey FryCitrus

Megan Dewdney and Jim Graham with University of Florida’s Institute of Food and Agricultural Sciences (UF/IFAS) have developed a suggested use pattern for the three antibacterial products that were recently allowed for use on citrus under a Crisis Declaration by Florida Commissioner of Agriculture Adam Putnam. The new document, titled “Suggested Antibiotic Use Pattern for Huanglongbing Management,” was put together …

Urgent Request from Florida Citrus Mutual

Kelsey FryCitrus

Mike Sparks, executive vice president/CEO of Florida Citrus Mutual (FCM), distributed the following urgent request to the citrus industry this morning. Dear FCM Members and Friends: The U.S. Environmental Protection Agency (EPA) is currently reviewing our industry’s request to grant a Section 18 Emergency Exemption for two bactericides – oxytetracycline and streptomycin. The bactericides are essential in our fight against …