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Below you'll see everything we could locate for your search of “hlb”
By Tripti Vashisth and Mary Sutton Citrus trees affected by huanglongbing (HLB) consistently have small fruit and low fruit numbers at harvest. The low fruit numbers are largely attributed to the increased rates of preharvest fruit drop that accompany HLB. Small fruit is more likely to drop during this preharvest period, suggesting a link between fruit size and retention. To …
The recent Florida Citrus Industry Annual Conference featured educational presentations on navigating production in an environment where HLB is endemic in groves. Two of those presentations focused on new technology being developed for use in citrus. Two companies, Elemental Enzymes and TJ BioTech, have been collaborating with the Citrus Research and Development Foundation (CRDF) to research their respective products’ potential …
Microregion maps developed by Fundecitrus should help Brazilian citrus growers make the necessary decisions to combat HLB disease, also known as greening. Fundecitrus explained that the incidence of HLB differs in the various regions of Brazil’s extensive citrus belt. To allow citrus growers to better understand the places where the disease is located, a study by Fundecitrus divided the belt …
The pros of injecting the antibiotic oxytetracycline (OTC) into citrus tree trunks to combat HLB appear to be numerous, including increased fruit yield, according to scientist Ute Albrecht. On the other hand, the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researcher only discussed one con, but it was a big one. “Trunk injections cause injury, and long-term …
University of Florida Institute of Food and Agricultural Sciences researcher Nian Wang reported in a July 20 webinar that HLB is a pathogen-triggered immune disease. After explaining the sequence in which the disease attacks trees, he suggested ways growers can use that knowledge to combat HLB. Wang is a microbiologist and cell scientist at the Citrus Research and Education Center. …
By Jude Grosser, Manjul Dutt and Fred Gmitter Exploiting citrus genetic diversity is the key to defeating HLB. Plant species have survived for millennia with evolving, hostile pathogens. This is possible through natural selection within genetically diverse populations. Tolerant or resistant individuals survive and intermate, get through the bottleneck, and the species evolves. Current citriculture is based on extremely limited …
The goal of an expedited tree propagation program is to have several million HLB-tolerant or HLB-resistant trees planted in the next several years. Greg Hodges, assistant director of the Florida Department of Agriculture’s Division of Plant Industry (DPI), said he believes that goal is attainable. Hodges and others presented the propagation plans to the Florida Citrus Commission (FCC) on July …
Federal and state officials in late June expanded the areas quarantined for huanglongbing (HLB, also known as citrus greening), caused by Candidatus Liberibacter asiaticus, in California. The U.S. Department of Agriculture’s Animal and Plant Health Inspection Service (APHIS) took the action in cooperation with the California Department of Food and Agriculture (CDFA). APHIS added portions of Los Angeles, Orange, Riverside …
By Christopher Vincent Kaolin particle film is a non-toxic tool to reduce psyllids and increase tree growth. Particle films are nothing more than a suspension of solid particles that make a “film” on the leaves after they dry. They work mostly by reflecting light. Kaolin is the most common type of particle film because the clay is mined directly and …
California’s commercial citrus groves remain free of HLB disease 14 years after Asian citrus psyllids (ACP) were first detected there. The state’s Citrus Pest and Disease Prevention Program (CPDPP) described that as “no small feat” in its recently released 2020-21 annual report. “The past fiscal year presented its fair share of headwinds for citrus-growing operations,” the report stated. “From pandemic-induced …
Brazil’s Fundecitrus reported that the exchange of international researchers and technicians working on the PRE-HLB (Preventing HLB Epidemics for Ensuring Citrus Survival in Europe) project strengthens research on the disease. In recent months, Fundecitrus received a researcher from the University of Amsterdam (Netherlands) and sent a researcher to the University of Valencia (Spain). Counting on the expertise of more than …
The Florida Citrus Commission (FCC) on May 18 received an update on a propagation program intended to quickly produce and commercialize trees showing tolerance or resistance to HLB disease, also known as citrus greening. The program will focus on the Donaldson tree and other escaped trees. The Donaldson is a tree at the U.S. Department of Agriculture’s Whitmore Farm that …
U.S. Representatives Kat Cammack and Al Lawson led members of the Florida congressional delegation to ask the U.S. Environmental Protection Agency (EPA) for expeditious approval of Vismax, a biochemical pesticide for HLB. A letter from the representatives asks the EPA to rapidly approve the use of Vismax in preventing HLB so the industry may access this product before the start …
By J. Scott Angle, jangle@ufl.edu, @IFAS_VP My hope is that your new citrus breeding team scientist will be a new Bill Castle on warp speed for an HLB solution. That is, John Chater will accelerate the search for citrus varieties that hold up against HLB. He’s got tens of thousands of places to search. Fred Gmitter and Jude Grosser have …
Michael Rogers, director of the University of Florida of Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Research and Education Center in Lake Alfred, discussed the recent Florida Citrus Growers’ Institute in the April All In For Citrus podcast. The event drew a good crowd of growers who came to learn about the latest research aimed at HLB. Rogers made …
The Citrus Research and Development Foundation (CRDF) held its April board of directors meeting to hear reports on projects involving 2,4-D, gibberellic acid, brassinosteroids and zinc. According to Rick Dantzler, chief operating officer of CRDF, the foundation is conducting a full-court press to study how these materials can combat fruit drop and improve quality. CRDF staff also presented a proposal …
Researchers offered updates on products proven to help against the devastating citrus disease HLB in a virtual seminar on April 27. University of Florida Institute of Food and Agricultural Sciences horticulturists Tripti Vashisth and Fernando Alferez discussed the benefits of gibberellic acid (GA) and brassinosteroids, respectively. Vashisth reported that GA-treated Valencia orange trees dropped less fruit and increased fruit yields …
Scientists from the New Mexico Consortium (NMC) say research they have conducted may lead to development of strategies for the control of HLB disease. The research is a collaborative effort between the Gupta laboratory, the NMC and the Stover laboratory at the U.S. Department of Agriculture’s Agricultural Research Service (USDA/ARS). The study focuses on the two putative virulence proteins of …
The use of a drone for chemical control of the psyllid that spreads HLB adds to Brazil’s efforts to battle the citrus disease, recent research indicates. The research was conducted by Fundecitrus in partnership with the startup Anáhata Serviços Agronômicos. Drones are ideal for complementing terrestrial applications and for emergency applications that need to be made quickly. For example, a …
The urgency is high to find any solution to help citrus growers more effectively mitigate HLB. During the Florida Citrus Growers’ Institute this month, Citrus Research and Education Center director Michael Rogers gave a presentation that outlined the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) research projects aimed at finding short-term HLB solutions. “We understand where the …
