HLB management

Management Plan for Roots of HLB-Infected Trees

Abbey TaylorCitrus Greening, HLB Management

By Jaci Schrekengost As huanglongbing (HLB) continues to decimate citrus crops, researchers continue to search for new, efficient ways growers can manage the disease. HLB, also known as citrus greening disease, is vectored by the Asian citrus psyllid. The disease affects the entire tree, including the roots and fruit. Tripti Vashisth, assistant professor and citrus Extension specialist at the University …

citrus greening

UC Puts HLB Research Online in Easy-To-Read Updates

Len WilcoxCalifornia Corner

California citrus farmers have their ears perked for all news related to Asian citrus psyllid (ACP), huanglongbing (HLB) disease and HLB research, but some of the very latest advances have been available only in highly technical research journals, often by subscription only. University of California (UC) Cooperative Extension scientists are now translating the research into readable summaries and posting them …

Monitoring Tree Health Using Water-Uptake Rate

Tacy CalliesCitrus

By Reza Ehsani, Azadeh Alizadeh and Davie Kadyampakeni Many scientists in Florida and other parts of the world are working hard to find a treatment for citrus greening and frequently conducting field trials to evaluate the effectiveness of their treatments. Monitoring plant physiological factors, yield and fruit quality are usually among the factors that they need to assess tree health. …

Tree Defender Stops Psyllids

Tacy CalliesCitrus

Sponsored Content A Florida company may hold the key to protecting the world’s young citrus plantings until a permanent solution for the devastating citrus greening disease (HLB) can be found. Widespread devastation from citrus greening has caused billions of dollars in lost revenue and killed over 100 million citrus trees worldwide. Although there appears to be no end in sight, …

supplemental

UF-Developed Mandarin Shows Increased HLB Tolerance

Daniel CooperIndustry News Release, Research

by Brad Buck, University of Florida/Institute of Food and Agricultural Sciences While citrus greening disease has blemished the Florida industry, University of Florida scientists have developed a mandarin hybrid that seems to be winning the battle. Now, researchers are learning what makes this fruit a fighter. University of Florida/Institute of Food and Agricultural Sciences (UF/IFAS) researchers have discovered that a mandarin …

Putnam, Graham Gear Up for Governor’s Race

Daniel CooperIndustry News Release

By Dara Kam and Lloyd Dunkelberger The News Service of Florida Ending months of speculation, Florida Agriculture Commissioner Adam Putnam filed papers Monday to run for governor in 2018. The Republican’s entree into the race to succeed Gov. Rick Scott, forced to leave office next year because of term limits, was little more than a formality. Putnam, a former congressman …

Insight on Improved Management of HLB-Affected Trees

Josh McGillIrrigation, Nutrition

Recent studies shed light on foliar nutrient and irrigation practices. By Kelly T. Morgan and Said Hamido Most citrus growers are well aware that citrus greening (HLB) is one of the most devastating citrus diseases in many parts of the world. The disease is widespread in Florida, Texas, Brazil, Mexico and other major production areas, causing significant concerns about the …

citrus celebrates anniversary

CREC and FDOC: Decades of Working Together

Daniel CooperCitrus, Industry News Release, Research

As the University of Florida/Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Research and Education Center (CREC) celebrates its 100th anniversary, administrators are praising a decades-long relationship between researchers with CREC and the Florida Department of Citrus (FDOC). “Housing the FDOC and CREC scientists at the same location has brought together the expertise needed to address any issue facing the …

Controlling ACP and Other Pests as Critical as Ever

Tacy CalliesCitrus Greening

By Jawwad A. Qureshi and Philip A. Stansly More than a decade has passed since 2006, when huanglongbing (HLB) or citrus greening disease was identified in Florida. By then, the disease had already spread widely and went unrecognized due to high psyllid populations and a disease incubation period of months or years between infection and symptom expression. Nevertheless, management of …

Highlights from the International HLB Conference

Ernie NeffCitrus Greening, HLB Management

Harold Browning, chief operations officer at the Citrus Research and Development Foundation (CRDF), provides an overview of activities at the recent International Research Conference on HLB held in Orlando. The conference was hosted by Florida Citrus Mutual, with much assistance from CRDF. “There were nearly 500 participants from 24 countries” including for the first time scientists from Cuba, Browning reports. …

Groves sold

More than 90 Groves, Former Groves Sold in 2016

Ernie NeffCitrus

More than 90 Florida citrus groves or former citrus groves were sold in 2016. Twenty four of the former groves are transitioning to other agriculture or to development. The sales are detailed in the Lay of the Land 2016 Market Report prepared by Coldwell Banker Commercial Saunders Real Estate (CBCSRE) in Lakeland. The report was distributed at the firm’s annual …

Kakkar Joins UF/IFAS Extension as Invasive Insect Specialist

Daniel CooperPests, Research

by Robin Koestoyo, UF/IFAS koestoyo@ufl.edu Garima Kakkar is joining the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) to help the state fight invasive pests. Kakkar, an expert in invasive insects, is a multi-county Extension agent based in St. Lucie County. Kakkar has a diverse range of experience in managing pest insects, and will now serve growers in the …

FDOC

Hancock on HLB: ‘I Think We’re Winning a Few Battles’

Ernie NeffCitrus Greening, HLB Management

Ned Hancock, a citrus grower and Florida citrus commissioner, shares thoughts about HLB, including the lack of consumer awareness of the disease and how growers are coping. At the Florida Citrus Commission meeting on January 18, the Florida Department of Citrus staff reported that only 1 percent of American consumers are aware of HLB. Hancock says he would have been …

HLB Management in Brazil

Tacy CalliesCitrus

Observations and lessons learned from a recent citrus grower tour By Stephen H. Futch In June 2016, a group of Florida citrus growers and industry representatives embarked on a trip to tour the Brazilian citrus industry. The primary purpose of the trip was to learn more about how huanglongbing (HLB or citrus greening) is being managed in Brazil and how …

growers

15 UF/IFAS Early Career Scientists Awarded $50K Grants

Daniel CooperIndustry News Release

Fifteen early career scientists at the University of Florida Institute of Food and Agricultural Scientists (UF/IFAS) have been awarded grants to help solve global issues such as thwarting invasive pests, improving crop varieties, battling citrus greening and preserving our environment. Sponsored ContentTake the Sting Out of Fire AntsApril 1, 2026Take the Sting Out of Fire AntsMarch 6, 2026Grower Results With …

The Many Hats of Allen Morris

Tacy CalliesCitrus, Economics

By Tacy Callies Having grown up in the small north Florida town of Macclenny, a farming community, Allen Morris was introduced to agriculture at an early age. His father died in a tractor accident when Morris was seven, but that didn’t deter him from wanting to earn a living in agriculture. In fact, at 14, he obtained a restricted driver’s …

Managing the Health and Productivity of HLB-Affected Groves

Tacy CalliesHLB Management

By Tripti Vashisth In 2005, huanglongbing (HLB or citrus greening disease) was first discovered in Florida. Florida orange production changed from 242 million boxes in the pre-hurricane, pre-HLB, 2003–2004 season to 81.5 million boxes in 2015–2016. This dramatic reduction in yield is attributable to multiple causes, including a reduction in citrus acreage, citrus canker and other citrus diseases. HLB is …

Guest Workers: Past, Present and the Future

Josh McGillLabor

By Gülcan Önel and Derek Farnsworth The U.S. agricultural sector has a long history of dependence on foreign workers, and the Florida citrus industry is no exception. Even though mechanical harvesting systems saw increased usage between 1999 and 2006, the discovery of citrus greening in 2005 and its subsequent spread across Florida virtually eliminated mechanical harvesting efforts by 2015 in …

EPA Approves KPHITE® RX Systemic Bactericide for HLB Control

Tacy CalliesBactericides

Florida-based Plant Food Systems announced that the Environmental Protection Agency (EPA) approved the use of KPHITE® RX Systemic Bactericide for the control of HLB or citrus greening. The approval was granted based on research conducted by a panel of researchers demonstrating that the use of KPHITE® RX and Renew® RX reduces the effects of greening on citrus crops. Further field …

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, …