Boosting Citrus Tree Immunity to Combat HLB

Tacy CalliesHLB Management

By Manjul Dutt, Juliana Soares and Jude Grosser Land plants such as citrus are generally anchored to a specific location by their roots. Owing to their immobile nature and constant exposure to pathogenic microbes, plants are very vulnerable. However, you might be surprised by how much plants can protect themselves and survive against multiple adversities encountered during their lifetime. A … Read More

UF/IFAS Gets $4.5M to Continue HLB Fight

Ernie NeffHLB Management

Three teams of scientists from the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) recently received nearly $4.5 million in U.S. Department of Agriculture (USDA) funds to study new ways to manage HLB. The funding is part of the $45 million in grants the USDA National Institute of Food and Agriculture’s Emergency Citrus Disease Research and Extension Program … Read More

Bayer HLB Project Extended

Ernie NeffHLB Management

bayer crdf

A large multi-year Bayer Crop Science project aimed at finding solutions for HLB will be extended by a grant from a branch of the U.S. Department of Agriculture (USDA). The two-year grant for just over $10 million came from USDA’s National Institute of Food and Agriculture (NIFA). The grant is to the Citrus Research and Development Foundation (CRDF) and its … Read More

Potential Trap Crop for Asian Citrus Psyllid

Ernie NeffHLB Management

Pakistan entomologist Muhammad Arshad reported on work that opens the possibility of further studies to determine the potential of Cordia myxa as a trap crop to manage Asian citrus psyllid (ACP) and, ultimately, to reduce HLB disease. C. myxa, also known as Assyrian plum or lasura, is a broad-leaved deciduous fruit tree. In trap cropping, plants are used to attract … Read More

Protecting Trees: Beyond CUPS and IPCs

Ernie NeffHLB Management

Many Florida citrus growers have been using individual protective covers (IPCs) for several years primarily to protect trees from HLB-spreading Asian citrus psyllids (ACP). Smaller but increasing numbers of growers are utilizing the more expensive citrus under protective screen (CUPS) system to protect trees from ACP and HLB. Recently, Fernando Alferez informed growers in a virtual presentation about some other … Read More

CTV Technology Getting Closer to Growers

Taylor HillmanAll In For Citrus Podcast, HLB Management

Including recent news about a peptide derived from finger limes, researchers have found many compounds over the last several years that could help growers manage or even fend off huanglongbing (HLB) disease. University of Florida Institute of Food and Agricultural Sciences Research Assistant Scientist Choaa El-Mohtar and his team have developed a new way to see how compounds can possibly … Read More

HLB Research Featured on Website

Tacy CalliesHLB Management

By Madison Sankovitz, Barbara Alonso, Monique Rivera, Lukasz Stelinski, Sara García-Figuera, Peggy G. Lemaux and Beth Grafton-Cardwell The bacterial disease huanglongbing (HLB) is a devastating disease and has caused massive losses to the U.S. citrus industry. The disease vector, the Asian citrus psyllid, is currently in all U.S. citrus-producing states, and the disease continues to exert a severe impact on … Read More

Quarantine Expansion for HLB in California

Len WilcoxHLB Management

A quarantine expansion has been declared following the detection of the citrus disease huanglongbing (HLB, also known as citrus greening) in five residential citrus trees located in Rancho Cucamonga, California. This is the first time the disease has been confirmed in Rancho Cucamonga, marking the fifth city in San Bernardino County to have had a positive detection of HLB. California … Read More

IPCs Prevent HLB Infection

Ernie NeffCitrus Expo, HLB Management

The use of individual protective covers (IPCs) for young trees prevented Asian citrus psyllid transmission and HLB infection in a trial near Immokalee, Fernando Alferez reported during the recent virtual Citrus Expo. Alferez said citrus trees planted at the Southwest Florida Research and Education Center (SWFREC) in January 2018 and covered with IPCs have been HLB-free for 32 months. Alferez … Read More

Needle-Assisted Trunk Infusion for Trees

Tacy CalliesHLB Management


With the devastating impacts of HLB on the citrus industry, growers are seeking alternative solutions to reduce Candidatus Liberibacter asiaticus (the bacteria that causes HLB) levels in trees and prevent disease-induced decline. Researchers at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) are developing an automated method for delivering therapeutic liquid materials into the vascular tissue of citrus … Read More

Peptide Could Restore Florida Citrus

Tacy CalliesHLB Management

CghSAMPa, the peptide found in the fruit of greening-tolerant Australian finger limes, is believed to be the first substance capable of controlling huanglongbing (HLB, also known as citrus greening). University of California, Riverside and Invaio Sciences, Inc. have partnered to advance the peptide research with hopes of bringing an HLB solution to commercialization by 2023. During a recent seminar hosted … Read More

HLB Solution Could Be Available in Three Years

Tacy CalliesHLB Management

University of California, Riverside (UCR) scientist Hailing Jin believes she has found a substance capable of controlling the deadly citrus greening disease known as huanglongbing (HLB). The potential cure Jin discovered is a peptide found in the fruit of greening-tolerant Australian finger limes, which have been consumed by humans for hundreds of years. Invaio Sciences, Inc., a multi-platform technology company … Read More

HLB Preparedness in Australia

Ernie NeffHLB Management, International

citrus greening

Learning how other countries manage huanglongbing (HLB) will help shape Australia’s response if the damaging citrus disease hits its shores, according to New South Wales (NSW) citrus pathologist Nerida Donovan. One of the biggest lessons so far has been the importance of treating the psyllid vector with the same respect as the disease. Donovan, with the NSW Department of Primary … Read More

Area-Wide Pest Management of Florida Citrus

Tacy CalliesHLB Management


Ariel Singerman, University of Florida assistant professor, made an online presentation during the recent Agricultural and Applied Economics Association annual meeting. He shared his research on the implementation of area-wide pest management throughout the state of Florida. “Diminishment of pest populations by farmers on their own farm is the most widely used strategy for pest control. However, this is compromised … Read More

CRDF Looking at Peptide for HLB

Ernie NeffHLB Management

When news broke in July that University of California Riverside (UCR) scientists had found a peptide that might control HLB, Rick Dantzler quickly contacted lead UCR scientist Hailing Jin. Dantzler is chief operating officer of the Citrus Research and Development Foundation (CRDF), which was organized in Florida primarily to find ways to solve or cope with HLB. Jin had found … Read More

Kaolin Particle Films for Citrus Under HLB Pressure

Tacy CalliesHLB Management


Managing the Asian citrus psyllid (ACP) that spreads citrus greening disease (HLB) has become a crucial task at the forefront of much research. One management option that has proven to reduce ACP populations while increasing tree growth and yield is particle film. During the 2020 virtual Florida Citrus Industry Annual Conference, University of Florida Institute of Food and Agricultural Sciences … Read More

Oak Leaf Extracts Display Curative Effects Against HLB

Tacy CalliesHLB Management


As demand increases for a cure to huanglongbing (HLB), experts are studying the most effective ways to control the damaging citrus disease. A research project funded by the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) is focusing on the effects of oak leaf extracts on CLas-infected citrus trees. CLas (Candidatus Liberibacter asiaticus) is the bacteria the causes … Read More

Growers Urged to Continue HLB Best Practices

Len WilcoxCalifornia Corner, HLB Management

The University of California, Riverside (UCR) recently released information regarding a promising new treatment for huanglongbing (HLB) and the Asian citrus psyllid that “effectively kills the bacterium causing the disease with a naturally occurring molecule found in wild citrus relatives.” While this news has exciting potential, UCR and California Department of Food and Agriculture scientists agree that growers should continue … Read More

New Book on the Asian Citrus Psyllid and HLB

Ernie NeffHLB Management, Psyllids

A book about the Asian citrus psyllid (ACP) and huanglongbing (HLB), edited by Jawwad Qureshi and the late Phil Stansly, was recently published by the Center for Agriculture and Biosciences International (CABI). Qureshi is an entomologist with the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS); Stansly was also a UF/IFAS entomologist. The book is Asian Citrus Psyllid: … Read More

Tools to Protect Young Trees From HLB Being Studied

Tacy CalliesHLB Management

While citrus growers continue to look for the best practices to fight the deadly huanglongbing (HLB) disease, researchers are taking an integrated approach at protecting young trees by using tools growers already have access to. “In Florida and pretty much every citrus-producing area, we’ve been doing a lot of replanting or resets,” says Lauren Diepenbrock, an assistant professor of entomology … Read More