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Below you'll find a list of all posts that have been categorized as “HLB Management”
Field tests of numerous antibacterial products and plant-derived compounds are underway with the goal of eliminating the HLB-causing bacteria in citrus and reversing plant damage to restore tree health. University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) plant root biologist Lorenzo Rossi discusses a new research project funded by the U.S. Department of Agriculture’s (USDA) National Institute of …
Jim Gorden, chair of the Citrus Pest and Disease Prevention Committee (CPDPC), is greatly concerned about the increase in sporadic Asian citrus psyllid (ACP) detections across California. Gorden sent an open letter to all citrus growers asking them to increase their vigilance against the pest and the risk of citrus greening, known as HLB disease. He said that “While the …
Researchers found use of kaolin particle film on trees reduced populations of HLB-spreading psyllids and delayed HLB infection. University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) assistant professor Christopher Vincent presented his research comparing red and white kaolin particle films with foliar insecticides during a recent UF/IFAS OJ Break webinar. According to Vincent, the particles of kaolin clay …
Researchers Caroline Roper and Nichole Ginnan at the University of California, Riverside led a large research collaboration that sought to explore the microbiome’s role in HLB disease progression. Their recent article in Phytobiomes Journal, “Disease-Induced Microbial Shifts in Citrus Indicate Microbiome-Derived Responses to Huanglongbing,” moves beyond the single-snapshot view of the microbial landscape typical of microbiome research. Their holistic approach …
By Lauren Diepenbrock Pest management is an ongoing effort in Florida citrus. Taking advantage of pest life cycles, whether they are tied to the season or plant phenology, can make management efforts have greater impacts on pest populations. For many citrus growers, managing the impacts of Asian citrus psyllid (ACP), the vector of huanglongbing (HLB), is part of the annual …
Citrus trees grown in Florida continuously undergo various types and levels of stress. Stressors can include severe weather conditions, soil pH, chemicals, pests and diseases. The constant presence of HLB and psyllid infestation adds further stress to the tree, compromising overall tree health. Off-season flowering and prolonged flowering are common responses of trees when undergoing various stress conditions. Off-season and …
Lukas Hallman, a graduate student at the Indian River Research and Education Center (IRREC), is doing research to find what is in oak trees that apparently helps citrus cope with HLB. The University of Florida Institute of Food and Agricultural Sciences operates the IRREC. “Anecdotal reports from Florida growers claim that citrus trees growing within the drip line of large …
Researchers from Sacramento State and the University of California, Riverside are requesting input from citrus industry members to help examine the economics of Asian citrus psyllid (ACP) and huanglongbing (HLB) management in California citrus groves. The research team is looking for growers, advisors and other citrus industry members in California to provide input on overall knowledge of ACP and HLB, …
Amit Levy with the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) describes research he’s conducting into the way the causal agent of HLB interacts with a citrus tree. The causal agent is the bacterium Candidatus Liberibacter asiaticus (CLas). Levy, whose research is funded by a U.S. Department of Agriculture grant, says CLas is found in a citrus …
Texas A&M AgriLife Research scientists have made a discovery that should help combat fastidious or “unculturable” pathogens, such as Candidatus Liberibacter asiaticus, the HLB causal agent. HLB is also known as citrus greening disease. Kranthi Mandadi, a researcher with Texas A&M, and his colleagues have been working several years on developing new technologies to fight the fastidious pathogens. Mandadi and …
Encouraging news stories have appeared in recent months on the possible benefits of using peptides in the fight against HLB. Peptides, small groups of linked amino acids, have many functions, including acting on pathogens. As researchers continue to investigate the role of peptides in the fight against HLB, they are also looking for the most effective delivery method of these …
Elemental Enzymes, a St. Louis biotechnology firm, has obtained a patent for a natural peptide solution to treat citrus greening disease. The peptide solution, Vismax, is readying for commercialization and is expected to reach the market by 2022. Vismax has been developed and extensively field tested, says Brian Thompson, CEO of Elemental Enzymes. Thompson gave a presentation on Nov. 18 …
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 …
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 …
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 …
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 …
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 …
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 …
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 …
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 …
