Grower Replanting Initiative Program for HLB in the Works

Ernie NeffHLB Management

According to Florida Citrus Mutual CEO Mike Sparks, the U.S. Department of Agriculture (USDA) has given “concept approval” for massive Florida grower field trials to determine what existing research might work in the face of HLB. Many details of this Grower Replanting Initiative Program (GRIP) remain to be worked out. “This program is to take your existing research on HLB,” … Read More

Covers Protect Young Trees from HLB

Ernie NeffHLB Management

Individual protective covers (IPCs) on young trees have prevented HLB infection in one year of study, a University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researcher said. Fernando Alferez, citrus horticulturist at the Southwest Florida Research and Education Center (SWFREC), announced his promising results at the recent Florida Citrus Show in Fort Pierce. “They (IPCs) are protecting the … Read More

Burns on HLB, Mechanical Harvesting

Ernie NeffHLB Management

HLB

Jackie Burns, who retired in January as dean for research at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS), discusses HLB, mechanical harvesting and other citrus issues on which she worked. Burns was a long-time scientist at the Citrus Research and Education Center and later director of the center before becoming dean for research. Burns said going … Read More

HLB Here to Stay

Ernie NeffHLB Management

Among other topics she discussed in her part of the latest All In For Citrus podcast, Laurie Hurner emphasized that HLB is here to stay. Hurner is the Highlands County Extension director and a citrus Extension agent. “At some point we do have to make the decision in the field, at the grower production level and at the higher levels … Read More

Deadline Extended for Submitting HLB Project Applications

Tacy CalliesHLB Management, Research

hlb

The Huanglongbing Multi-Agency Coordination (HLB MAC) group is extending the deadline for submitting project applications to Friday, March 8, 2019. Information on applying for funding, including the application template, criteria for evaluation and the submission process, is available on the HLB MAC site.  The HLB MAC funds applied research projects that are likely to deliver a useable tool in the … Read More

Using IPM for HLB

Ernie NeffHLB Management

“Unfortunately, there is no silver bullet” for HLB, plant pathologist Ozgur Batuman told growers in Immokalee recently, adding that he doesn’t think there will be one. “The best option for such a complex and challenging disease is … integrated pest management (IPM). And our growers here in Florida are actually doing just that. Now they are paying attention to root … Read More

Rogers on HLB Research and Education

Ernie NeffHLB Management

podcast

Michael Rogers, director of the Citrus Research and Education Center, discusses HLB research and education programs being conducted by the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS). “The goal of our IFAS citrus program continues to be to provide growers with the most up-to-date information that they can use to help maintain or increase the production of … Read More

Study Zeroes in on Organic Ways to Beat Citrus Greening

Daniel CooperCitrus Greening, HLB Management, Industry News Release, Research

citrus greening

Results show promise for organic groves, but more research is needed. Since it was first discovered in the United States in 2005, the bacterial disease known as citrus greening, or Huanglongbing, has devastated millions of acres of citrus crops throughout this country and abroad, ravaging citrus groves in Asia, Africa and South America. Citrus greening has impacted conventional and organic … Read More

California HLB Detections Increased in 2018 as Monitoring Efforts Intensified

Tacy CalliesHLB Management

Huanglongbing (HLB) may have been found in significantly more citrus trees in 2018, but improved sampling and monitoring offer a reason as to why HLB detections increased so dramatically. In 2018, the California Department of Food and Agriculture’s Citrus Pest and Disease Prevention Program (CPDPP) redoubled efforts to limit the spread of HLB and its vector, the Asian citrus psyllid … Read More

HLB Reduction Strategies

Tacy CalliesHLB Management

By Jawwad Qureshi, Lukasz Stelinski and Fernando Alferez Management of huanglongbing (HLB) has focused on reducing the vector Asian citrus psyllid (ACP) and improving tree health, thus requiring a multi-pronged approach. Several elements of an HLB management system are either available or under current investigation. Maintenance of clean nursery stock, vector management and tree nutrition are widely implemented, while incorporation … Read More

Manage Soil pH and Nutrition for HLB

Ernie NeffHLB Management

morgan

Growers with trees affected by HLB should try to maintain soil pH in the 6 to 6.5 range, Kelly Morgan told numerous growers attending a recent Citrus Nutrition Day event. Morgan is director of the University of Florida Institute of Food and Agricultural Sciences’ (UF/IFAS) Southwest Florida Research and Education Center. Morgan explained that soil pH affects trees’ ability to … Read More

Growers to Learn About Pest Management at Workshop

Daniel CooperCitrus Greening, HLB Management, Industry News Release, Pests, Psyllids

growers

Citrus growers can learn more about managing Asian citrus psyllids and other pests in a workshop Jan. 8 at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Research and Education Center (CREC). The psyllid can transmit the bacteria associated with greening disease to citrus trees and has already caused severe damage to Florida’s multi-billion-dollar-a-year citrus industry. … Read More

USDA Grant Could Help Florida’s Grapefruit Industry

Daniel CooperCitrus Greening, Grapefruit, HLB Management, Industry News Release

usda

Florida’s grapefruit industry, devastated by citrus greening, may find hope in four ½-acre white-mesh screenhouses in a research field in Fort Pierce. The project will be funded by a $3.5 million grant from the U.S. Department of Agriculture (USDA) awarded to the University of Florida. Studies for the grant will take place inside and outside these structures, where 512 young … Read More

Nutrition and pH Management for HLB

Ernie NeffHLB Management, Nutrition

HLB

At Citrus Expo, University of Florida soil scientist Kelly Morgan said nutrient uptake by HLB-infected trees can be improved by applying the proper amount of nutrition and managing pH. “Those two things go hand-in-hand,” he said. “As you reduce soil pH below 7, you increase the uptake of most nutrients. So we need to reduce our pH. Our pH has … Read More

Grower: What’s Helping, and What’s Not, for HLB

Ernie NeffHLB Management

HLB

Focusing on nutrients and soil issues is helping Lykes Brothers cope with HLB (also known as citrus greening), says John Gose, general manager of the company’s Citrus Division. “We’ve seen more benefits in battling greening with the addition of more nutrients,” Gose says. “When I say that, I’m talking about micronutrients in particular.” He adds that the company is also … Read More

Laser Technology May Be Key to Rehabilitating HLB Trees

Daniel CooperCitrus, Citrus Greening, HLB Management, Research, Technology

laser

A University of Florida (UF) scientist hopes to improve on laser technology to enhance the efficiency of spray solutions aimed at restoring vitality to greening-affected citrus trees and reducing amounts of chemicals applied. With the updated technology, a laser shoots infra-red energy pulses at citrus tree leaves, said Ed Etxeberria, a professor of horticultural sciences at the UF Institute of … Read More

As California HLB Detections Rise, Priorities Refocus

Daniel CooperCalifornia Corner, Citrus, Citrus Greening, HLB Management

hlb

By Brian German A series of strategic planning sessions have helped to craft a more detail-oriented approach to address the spread of Asian citrus psyllid (ACP) and management of huanglongbing (HLB) detections. As of Oct. 9, there have been 906 positive HLB detections in California. “The real hot spot for us right now is Orange County. We’re finding a lot of HLB-positive … Read More

Young Citrus Trees May Benefit from Full Irrigation

Daniel CooperCitrus, Citrus Greening, HLB Management, Industry News Release, Irrigation, Research

citrus trees

Mature citrus trees affected by the bacterial disease huanglongbing (HLB) typically need about 25 percent less irrigation than their healthy counterparts However, that doesn’t necessarily mean young trees with the disease will benefit from water deficits, according to a preliminary greenhouse study by researchers with the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS). Experiments on 1-year-old orange … Read More

Effects of Homobrassinolides on HLB-Affected Trees in Florida

Tacy CalliesHLB Management, Research

By Fernando Alferez, Christopher Vincent and Tripti Vashisth In the current scenario of widespread infection and severe symptoms of HLB in Florida, horticultural practices that improve plant health in the presence of the disease are needed. For this reason, we sought to follow up on reports of positive effects of a brassinosteroid on infected plants. Brassinosteroids are a relatively newly … Read More

New UF/IFAS Entomologist: From a Kid’s ‘Lab’ to Helping Citrus Growers

Daniel CooperCitrus Greening, HLB Management, Industry News Release, Psyllids, Research

citrus

As a girl in her garage in Palm Bay, Florida, Lauren Diepenbrock, already a budding scientist, peered through the lens of her microscope and marveled at the magnification. “As a kid, I played in the woods and brought back all sorts of ‘finds,’ including a snake skeleton, none of which my mom allowed in the house,” said Diepenbrock, an assistant … Read More