 |  |  |  |  |  |  |  |  |
Below you'll find a list of all posts that have been categorized as “HLB Management”
Everyone in the citrus business knows HLB has wreaked havoc on Florida citrus growers. But it has also caused severe problems for processors, said Bob Behr, CEO of Florida’s Natural Growers (FNG). FNG is one of the nation’s largest processors and marketers of orange juice. Behr told the audience at the recent Florida Citrus Industry Annual Conference that low citrus …
Denise Manker with Bayer CropScience provides an update on Bayer’s collaborative effort with the Citrus Research and Development Foundation to seek solutions for HLB. Her presentation came during the recent Florida Citrus Industry Annual Conference in Bonita Springs. Manker told the audience there will not likely be a “silver bullet” that will provide a solution to the disease. “I think …
By Brian German The Spring Citrus Meeting held last week in Tulare County touched on several major issues growers are concerned with, and included presentations on best practices for managing citrus trees. The day began with important information related to Asian citrus psyllid (ACP) and the disease it causes, huanglongbing (HLB), which has been growing at an alarming rate in …
An Indian River-area grapefruit grower told the crowd at Florida Citrus Mutual’s recent annual conference about his company’s plans for coping with HLB. The plans include replanting with some diverse citrus varieties at higher densities, said Daniel Scott, vice president of Scott Citrus Management. Grapefruit has for the most part proven extremely difficult to grow profitably in the face of …
University of Florida Institute of Food and Agricultural Sciences researcher Jude Grosser discusses small experiments that indicated manganese and boron can help citrus trees cope with HLB. In a greenhouse experiment from a few years ago, HLB-infected sweet orange trees were overdosed with micronutrients and secondary nutrients. “It looked like … manganese had the biggest effect on growth of the …
University of Florida Institute of Food and Agricultural Sciences researcher Evan Johnson reports that the product Zinkicide appears promising as a management tool for HLB. “Zinkicide is a zinc-based nanoparticle that is designed to become systemic inside the tree and has high bactericidal activity so that hopefully it can target Liberibacter,” Johnson says. Liberibacter is the causal agent of HLB. …
Phil Rucks of Phillip Rucks Citrus Nursery weighs in on the increasing demand for late versus early orange varieties, the impact of Hurricane Irma and HLB. Rucks notes that over the past 30 years, the demand for early-season oranges versus late-season oranges has essentially reversed. In the past, he says, early varieties accounted for about 60 percent of plantings. Now, …
University of Florida Institute of Food and Agricultural Sciences researcher Christopher Vincent says kaolin clay outperforms foliar insecticides for management of HLB-spreading psyllids at times when kaolin’s use is practical. His presentation on the topic followed the Citrus Research and Development Foundation (CRDF) meeting on May 22 at the Citrus Research and Education Center in Lake Alfred. The presentation, part …
Citrus Research and Development Foundation (CRDF) Vice President and Governance Committee Chairman Rick Kress comments on a recent National Academy of Sciences (NAS) report regarding HLB and CRDF. He says NAS reported that CRDF has pursued all angles on HLB, also known as citrus greening, and declared there won’t be a single solution or cure. When NAS worked with CRDF …
Researchers at the University of California, Riverside (UCR) claim they have made an important step in understanding the molecular mechanism of huanglongbing (HLB). They believe they have found the mechanism by which the disease evades detection and destruction by the natural immune system of citrus trees. HLB, or citrus greening disease, has devastated groves in Asia, South America and the …
The use of highly HLB-tolerant genotypes as interstocks on a tree with a Swingle rootstock and a Valencia scion infected with HLB is offering hope for help against HLB, Jude Grosser reports. Grosser is a plant breeder with the University of Florida Institute of Food and Agricultural Sciences at the Citrus Research and Education Center in Lake Alfred. “Virtually every …
The Citrus Research and Development Foundation’s (CRDF) board of directors, which is focused on HLB, discussed ways to improve communications with growers and others during a meeting in Immokalee on Tuesday. The directors asked numerous growers attending the meeting at the Southwest Florida Research and Education Center for their input regarding improved communication. One grower said he needs more detail …
Jim Snively, vice president of grove operations at Southern Gardens Citrus, discusses his company’s management of HLB and the psyllids that spread it. He summarizes a presentation he made at the International Citrus Business Conference in March. “By reducing stress, the trees can deal with disease much better,” Snively says. “We’re doing this through continuous-type feeding or frequent feeding with …
Phil Stansly, University of Florida Institute of Food and Agricultural Sciences entomologist, discusses alternatives to imidacloprid for helping to control HLB-spreading Asian citrus psyllids (ACP). “Imidacloprid of course is typical of the neonicotinoids that we’ve been using as soil applications to protect young trees,” Stansly says. “We’ve seen and the growers have seen, too, that soil applications of systemic insecticides …
A single breakthrough discovery for managing citrus greening in Florida in the future is unlikely, says a new report by the National Academies of Sciences, Engineering, and Medicine. The committee that wrote the report called for a systems approach to prioritize research on the disease and strategically distribute resources for research to effectively manage the disease, which is the most …
Several trials indicate that after one year of application, bactericides increase citrus yields in HLB-infected trees compared to non-treated controls, a U.S. Department of Agriculture researcher reported Tuesday at the Florida Citrus Growers’ Institute. But the researcher, Robert Shatters, says the results are variable. “We’ve seen three studies now, done totally separately in different ways, and they all show about …
Mike Irey of Southern Gardens Citrus explains why he thinks “flipping” the standard focus of psyllid control from young trees to mature trees can actually help young trees grow stronger in the face of HLB. Irey, director of research and business development, spoke at the recent International Citrus Business Conference in Daytona Beach. Irey explains that HLB is spread two …
New clues to how the bacteria associated with citrus greening infects the only insect that carries it could lead to a way to block the microbes’ spread from tree to tree, according to a study in Infection and Immunity by Agricultural Research Service (ARS) and Boyce Thompson Institute (BTI) scientists. Citrus greening, also known as huanglongbing (HLB), is a serious disease dramatically …
University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) professor Kelly Morgan discusses the importance of nutrient leaf concentrations in HLB-infected citrus trees. “The leaf concentration (of nutrients) is reduced in all HLB trees,” he says. “We’ve known that for a long time, since HLB was found in Florida.” Morgan, who works at the Southwest Florida Research and Education …
Spoon-feeding nutrients through root systems and protecting new leaf flushes are among ways Jude Grosser believes growers can maintain tree health in the face of HLB. Grosser, a University of Florida Institute of Food and Agricultural Sciences professor, is best known as a citrus breeder. Grosser said he started working with nutrition because “like any grower, I don’t like to …
