New Finger Lime Cultivars for the Specialty Citrus Market

Josh McGillLimes, Tip of the Week, Varieties

By Manjul Dutt The finger lime is an HLB-tolerant Australian native citrus that has been gaining popularity and importance in the last few years. Finger lime has several unique fruit qualities that set it apart from conventional sweet oranges and mandarins. The primary characteristic of this fruit is the round to teardrop-shaped juice vesicles, known as “citrus caviar,” that burst …

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 …

A Two-Pronged Approach to Suppress Psyllids

Josh McGillHLB Management, Psyllids, Research

By Bryony C. Bonning and Lukasz L. Stelinski Asian citrus psyllids (ACP) transfer the pathogen that causes citrus greening from plant to plant as they feed. After confirmation of citrus greening in Florida in 2005, growers intensified their use of insecticides against ACP to try to stop disease spread. However, this method alone has yielded variable success and increased costs. …

Georgia Growers: Look Out for Lebbeck Mealybug

Josh McGillGeorgia, Pests

University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) specialists are alerting Georgia citrus growers about an invasive pest that’s impacting Florida’s crop. Lebbeck mealybugs have yet to navigate their way to Georgia. But it is only a matter of time, says Lauren Diepenbrock, UF/IFAS assistant professor and entomologist. “It’ll get up to Georgia probably. We’re doing our best …

Focused on Finding Solutions

Josh McGillResearch

By Michael Rogers As we approach a new citrus-growing season, the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers and Extension agents working throughout the state renew their focus on finding solutions that growers can use in the short term to sustain their operations. While we value our longer-term research projects, efforts that provide tangible applications that …

Update to Hurricane Forecast Issued

Josh McGillhurricane, Weather

On Aug. 4, Colorado State University (CSU) decreased its hurricane forecast for Atlantic seasonal activity and landfall strike probability for 2022. But citrus growers and other agriculturists shouldn’t relax their guard because the CSU Department of Atmospheric Science continues to call for an above-average Atlantic hurricane season. NEW PROJECTIONSCSU now forecasts the Atlantic will have 18 named storms in 2022, …

How to Manage Salt Stress in Citrus Groves

Josh McGillsoil, Tip of the Week, Water

By Amir Rezazadeh Saline soil and water damage many citrus groves in Florida. In general, when the dissolved salt concentration in soil or water increases, it is referred to as “saline” soil or water. But how much increase in salt concentration makes soil or water saline? Citrus plants’ major reactions to excessive salt in the soil or water are reduced …

Greening and Canker Concerns for Georgia Growers

Josh McGillDiseases, Georgia

The recent Citrus Growers’ Summer Update in Valdosta, Georgia, provided growers another outlet to learn about two diseases — citrus greening and citrus canker — that could have serious ramifications on the industry’s future in Georgia. Jonathan Oliver, University of Georgia (UGA) assistant professor and small fruits pathologist, highlighted the seriousness of the discovery of both of the diseases in …

Impact of HLB on Fruit Growth and Retention

Josh McGillFruit Drop, HLB Management

By Tripti Vashisth and Mary Sutton Citrus trees affected by huanglongbing (HLB) consistently have small fruit and low fruit numbers at harvest. The low fruit numbers are largely attributed to the increased rates of preharvest fruit drop that accompany HLB. Small fruit is more likely to drop during this preharvest period, suggesting a link between fruit size and retention. To …

What’s Next for the Donaldson Citrus Variety?

Josh McGillHLB Management, Research

During this summer’s Florida Citrus Industry Annual Conference, Matthew Mattia, a post-doctoral associate with the U.S. Department of Agriculture (USDA), discussed his work to identify the origins of the Donaldson citrus variety. The variety is a single tree on the USDA A.H. Whitmore Foundation Farm near Groveland, Florida. Mattia was the first to discover the tree on the farm in …

How Alico Had Less Crop Decline Than Average

Josh McGillIndustry News Release, Production

Alico President and CEO John Kiernan recently pointed out that the company had less orange crop decline than Florida as a whole in the 2021–22 citrus season. He noted that while the U.S. Department of Agriculture reported that the Florida crop declined 22.7% from the prior season, Alico’s decline was only 12.9%. “The company believes this lower rate of decline …

Advantages and History of Trunk Injection

Josh McGillHLB 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 …

Get the Newest UF/IFAS Info at the Citrus & Specialty Crop Expo

Josh McGillCitrus Expo, Education, Tip of the Week

By Jamie Burrow and Ruth Borger Over the last several months, the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) citrus team has been preparing for the annual Citrus & Specialty Crop Expo. The excitement is in the air as many faculty are preparing seminar presentations on valuable information that growers may use today to support their operations. …

Non-Certified Donaldson Trees: Limited Availability for Growers

Josh McGillFlorida Department of Citrus, HLB Management

The Florida Department of Citrus’ Program for Expedited Propagation (PEP) of HLB-tolerant and resistant trees was conceived during the 2022 Florida legislative session following the discovery of the Donaldson tree among the collection at Whitmore Farms. The goal is to provide the resources needed to ramp up availability of Donaldson trees and others like it, so that growers interested in …

Microbiology and Microbes: The Key to Boosting Citrus Productivity

Josh McGillAll In For Citrus Podcast, Sponsored Content

Whether a citrus grove is thriving or not is often based on what is observed above the ground. However, the best measurement of fertility comes from what’s happening below ground—in the soil microbiology. There is a complex community of living organisms, everything from worms and insects to tree roots. One of the most important elements is soil microbes. Soil microbes …

Startups Aim to Aid Citrus Industry

Josh McGillFlorida, Technology

Two University of Florida (UF) startup companies have formed a union to help reverse the trend of declining Florida citrus production. Agriculture Intelligence and Satlantis believe they can offer a powerful tool to help the state’s growers more closely monitor their trees and manage problems faster. The startups, housed in one of UF’s business incubators, will combine expertise in precision …

florida

CRDF Board Acts on Research Recommendations

Josh McGillCRDF, Research

The Citrus Research and Development Foundation (CRDF) board of directors spent much of its monthly meeting in July considering recommendations from the foundation’s research management committee (RMC). TRACKING TREESThe RMC recommended that a request for proposals be put forth to create an inventory of all germplasm existing in field trials from the plant breeding programs CRDF has helped to fund. …

Two New Tools in the Fight Against HLB Seek EPA Registration

Josh McGillHLB Management

The recent Florida Citrus Industry Annual Conference featured educational presentations on navigating production in an environment where HLB is endemic in groves. Two of those presentations focused on new technology being developed for use in citrus. Two companies, Elemental Enzymes and TJ BioTech, have been collaborating with the Citrus Research and Development Foundation (CRDF) to research their respective products’ potential …

Hear What’s on Tap for the Citrus & Specialty Crop Expo

Josh McGillAll In For Citrus Podcast, Citrus Expo

The Citrus & Specialty Crop Expo is set for Aug. 17–18 in North Fort Myers, Florida. The event, held at the Lee Civic Center, will be a flurry of activity as citrus and specialty crop growers come together to learn, network and see the latest tools of the trade in farming. The latest episode of the All In For Citrus …