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Below you'll find a list of all posts that have been categorized as “HLB Management”
The U.S. Department of Agriculture’s National Institute of Food and Agriculture (USDA NIFA) has invested more than $25 million in 11 projects as part of the Emergency Citrus Disease Research & Extension program. This program brings the nation’s top scientists together with citrus industry representatives to find scientifically sound solutions that combat and prevent citrus greening (HLB) at the farm level. Some of this …
Fundecitrus recently launched the institutional awareness-raising film Urgência as yet another part of the Greening Is Serious campaign. The campaign began in January last year. In the film, 10 representatives of the citrus sector talk about the economic, social, environmental and historical dimensions of citrus growing in São Paulo and Minas Gerais. They point out everything that is at risk …
By Ute Albrecht The German scientist Paul Ehrlich pioneered the research for “magic bullets” — chemicals that could kill a microorganism but did not harm the patient. He also coined the term “chemotherapy” and paved the way for developing synthetic drugs. The first synthetic antibiotic (the first sulfa-type antibiotic) to successfully treat human bacterial diseases without major side effects was …
The Citrus Research and Field Trial (CRAFT) board of directors and staff are pleased to announce that the application for Cycle 5 of the CRAFT new tree planting program is now available online. Any interested commercial grower in Florida has until 5:00 p.m. on Nov. 30 to apply. The CRAFT board of directors, with the help of the Technical Working …
Representatives of the Brazilian private citrus sectors of São Paulo and Minas Gerais met Sept. 25 with members of São Paulo’s government to formulate joint action plans against citrus greening disease. Representing the private sector in the meeting were Fundecitrus, Brazilian Table Citrus Association, Vivecitrus, Citrus Consultants Group and Technical Assistance and Consultancy Group in Citrus. The government of the …
By Ute Albrecht and Leigh Archer Trunk injection is an alternative technique for applying crop protection materials. This technology has now been approved to deliver oxytetracycline (OTC) for huanglongbing (HLB) management in Florida. Injections cause injury, and best practices need to be established to minimize injection-induced tree damage. University of Florida Institute of Food and Agricultural Sciences researchers (UF/IFAS) injected …
The Citrus Research and Development Foundation (CRDF) approved three new projects during its September board of directors meeting. The projects will test the injection of different antimicrobial materials to treat HLB. One project will be managed by Ozgur Batuman, a citrus pathologist with the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS). Another will be run by Kranthi …
The California Department of Food and Agriculture (CDFA) has declared a quarantine in Ventura County following the detection of the citrus disease huanglongbing (HLB), or citrus greening, in two citrus trees on one residential property in the city of Santa Paula. These detections are the first HLB-positive trees in Ventura County. CDFA is working with the U.S. Department of Agriculture …
The resistance of HLB-spreading psyllids to some insecticides and the low effectiveness of insecticides applied via drench to control psyllids were recently addressed by Fundecitrus researchers. RESISTANCE OF PSYLLIDS Fundecitrus professionals participated in a meeting of the Brazilian Insecticide Resistance Action Committee. They were researcher Marcelo Miranda and agricultural engineer and postdoctoral fellow at Luiz de Queiroz College of Agriculture/University of …
In the nearly two decades that huanglongbing (HLB) has plagued Florida citrus groves, about $1 billion has been spent in the search for solutions. A lot of great scientists in Florida and around the world have worked on the problem, and a silver bullet, if there is one to be found, has been elusive. Researchers, along with growers, have developed …
Trunk injection of oxytetracycline (OTC) is giving growers hope for the future of the Florida citrus industry. Many are optimistic the new therapy will help improve both fruit quality and quantity. The key will be whether fruit holds on the trees until harvest time. The October issue of Citrus Industry magazine provides the latest information on OTC trunk injection from …
By Tripti Vashisth, Wesley Webb and Taylor Livingston As trees become symptomatic for HLB, leaves experience an imbalance of plant hormones. This hormonal imbalance exacerbates HLB symptoms and can lead to more stem dieback, poor vegetative growth and fruit drop. This ultimately leads to reduced bearing wood, resulting in yield losses and tree decline. Thus, the use of growth-promoting hormones …
By Ute Albrecht, Larissa Nunes and Gabriel Pugina The current label recommends trunk injection of oxytetracycline (OTC) into the rootstock, but this may not always be possible. Previous University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) studies have shown that both rootstock and scion injections are effective. However, researchers have not yet studied if different rootstocks influence …
The Peace River Valley Citrus Growers Association hosted a grower forum in September to discuss how trees are looking after the first application of oxytetracycline (OTC) has been injected. The event had a good turnout, and growers were mostly optimistic about what they are seeing in groves. Nearly all in attendance have treated at least some portion of their acreage …
By Ernie Neff New tools available to aid in establishment of young citrus groves all have pros, cons and unknowns, entomologist Lauren Diepenbrock told a Citrus & Specialty Crop Expo audience in August. Diepenbrock is an entomologist and assistant professor with the University of Florida Institute of Food and Agricultural Sciences. She opened her presentation by saying insecticides alone are …
A Candidatus Liberibacter asiaticus (CLas)-positive Asian citrus psyllid (ACP) sample has been collected from a residential property in California’s Ventura County. CLas is the bacterium that causes HLB. The Citrus Research Board’s Jerry Dimitman Laboratory confirmed the positive sample. This is the first confirmed CLas-positive ACP sample found in Ventura County. The positive sample, comprised of 12 adult psyllids from …
By Frank Giles and Tacy Callies The Citrus & Specialty Crop Expo hosted two citrus educational sessions during the Aug. 16–17 event held at the Florida State Fairgrounds in Tampa. The sessions included both long-term research aimed at delivering trees resistant to HLB as well as what growers can do today to help mitigate the effects of the disease in …
Citrus researcher Nian Wang has been appointed to the Graves Eminent Scholar Chair in Biotechnology at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS). Wang is a professor of microbiology and cell science at the Citrus Research and Education Center (CREC). He was appointed to the chair because of his work to develop a tree resistant to …
Research has confirmed the initial phase of resistance of the HLB-spreading psyllid to the active ingredient malathion in some microregions of the citrus belt of São Paulo and Triângulo/Southwest Mineiro. Malathion is from the organophosphate chemical group. The research was conducted by Fundecitrus in partnership with Luiz de Queiroz College of Agriculture/University of São Paulo (Esalq/USP). This is the third …
In August, Horticulture Research published a paper titled An endolysin gene from Candidatus Liberibacter asiaticus confers dual resistance to huanglongbing and citrus canker. Researchers found that an endolysin encoded by the Candidatus Liberibacter asiaticus (CLas) prophage has dual resistance to huanglongbing (HLB) and citrus canker. A prophage is the genetic material of a bacteriophage, and a bacteriophage is a virus …
