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Below you'll see everything we could locate for your search of “disease”
Researchers at the University of Melbourne have identified an Australian strain of fungus that causes citrus anthracnose. “Our research group at the University of Melbourne analyzed Colletotrichum collected from samples of anthracnose lesions on citrus leaves, twigs and fruit,” researchers Weixia Wang and Paul Taylor wrote. “The study identified six Colletotrichum species infecting Australian citrus. One of these is a …
There is no arguing that citrus greening has been the biggest change to the industry in the past 16 years. The disease is causing growers to do things differently. Researchers are helping growers adapt to change and find new solutions. Some of this research can be found in the June issue of Citrus Industry. FRUIT DROPOne of the problems exacerbated …
Researchers with the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) have conducted scientific studies in groves owned by grower cooperators around the state for many decades. UF/IFAS’ Michael Rogers refers to these researcher/grower relationships as “partnerships” and discusses their value. Rogers is director of the UF/IFAS Citrus Research and Education Center at Lake Alfred. “These researcher/grower partnerships, …
Pete Spyke, a Florida gift fruit citrus grower and shipper, recently offered some advice to California citrus growers for dealing with HLB. In a letter to California’s Citrus Pest & Disease Prevention Program, Spyke suggested that growers continue to detect and remove HLB-infected trees. Spyke’s letter follows: Dear California Citrus Growers, Based on my observations and discussions with growers and …
The U.S. Department of Agriculture (USDA) is examining different ways to deliver therapeutics to citrus trees for management of citrus greening disease, also know an huanglongbing (HLB). The hope of the USDA initiative is to establish an HLB-therapeutic molecule and identify the most cost-effective strategy to deliver these molecules to growers. The project is in collaboration with the University of …
Penn State and U.S. Department of Agriculture (USDA) scientists have used cutting-edge CRISPR/Cas technology to develop a diagnostic test that could enable early diagnosis of huanglongbing (HLB). In a study newly published in the journal Phytopathology, the researchers demonstrated that the new test can detect the presence of the HLB causal agent — the bacterium Candidatus Liberibacter asiaticus (CLas) — …
A group of scientists working in California, New York and Washington has found that Lisbon lemon trees had less of a molecular response than Washington navel orange trees to the pathogen that causes HLB. That pathogen is Candidatus Liberibacter asiaticus (CLas). In part, this might be because leaves of infected lemons tended to accumulate micronutrients, which led to less of …
Beneficial insects could be a citrus grower’s best friend. In a time when producers are applying insecticides to control the Asian citrus psyllid, the vector of citrus greening disease, it’s important to preserve the psyllids’ natural enemies, like lady beetles and lacewings. Jawwad Qureshi, University of Florida entomologist, implores growers to scout their groves periodically to see what insects are …
By Ute Albrecht and Leigh Archer Trunk injection is a targeted delivery of materials into the stem or trunk of trees as an alternative to spraying or soil drenching. It is practical for disease and pest management in high-value forest trees and ornamental plants where aerial applications are problematic because of environmental and human health-related concerns. Interest in using the …
New research affirms a unique stable antimicrobial peptide (SAMP) found in an Australian plant can destroy HLB and help prevent infection. Hailing Jin, University of California Riverisde geneticist who led the research, shared the exciting discovery during the 2021 Florida Citrus Show. The naturally occurring peptide is found in HLB-tolerant citrus relatives, such as the Australian finger lime. The peptide …
Florida citrus growers may have a new tool to help them slow the presence of HLB in already diseased trees, courtesy of researchers at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS). The researchers found that injecting a benign Xylella fastidiosa EB92-1 bacteria biocontrol into infected citrus trees over a period of six years reduced the incidence …
Amid arguments about the troubled citrus industry and the health of farmworkers, a chemical company is challenging a state decision to block aldicarb, a pesticide that could help fight citrus greening disease. AgLogic Chemical, LLC filed an administrative challenge on May 11, about three weeks after the Florida Department of Agriculture and Consumer Services (FDACS) denied an application to use …
By Lauren Diepenbrock Lebbeck mealybugs (Nipaecoccus viridis) have quickly made an impact on citrus groves in Central and South Florida since the pest was first found in 2019. While management techniques are still being studied, this article describes actions growers can take to find this pest before it becomes a problem. SOOTY MOLDLebbeck mealybugs excrete sugary honeydew, much like many …
Interest in citrus continues to spike in North Florida and South Georgia. Georgia acreage has doubled over the past year. North Florida acreage has increased by another 300 to 400 this spring, says grower Kim Jones. He owns a citrus packing facility in Monticello, Florida, and is president of the Cold Hardy Citrus Association. “We’re seeing a whole lot of …
By Yiannis Ampatzidis Artificial intelligence (AI) is a promising area in computer science, automation, robotics and agriculture. AI describes the capability of a machine to imitate intelligent human behavior and mimic cognitive functions such as learning and problem-solving. Machine learning, which is an application of AI, is based on the idea that a machine, such as a computer or microcontroller, …
Researchers at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) are taking a whole-systems approach to update current recommendations for new plantings. A research project, “Establishing Healthy Citrus Plantings in the Face of Persistent HLB Pressure,” is led by UF/IFAS entomologist Lauren Diepenbrock. According to Diepenbrock, current guidelines were created pre-HLB and therefore are out of date …
Florida growers are being asked to take a survey on the use of cover crops and reflective mulch in citrus production. These systems are being investigated as potential means to improve soil health and reduce pest pressure from Asian citrus psyllids, which transmit the destructive citrus disease HLB. The survey is being conducted by researchers with the University of Florida Institute …
As temperatures increase across Florida, so does the risk for huanglongbing (HLB) disease, known as citrus greening. While the southern and central portions of the state remain vulnerable to HLB and Asian citrus psyllids (ACP) that spread the disease, growers in North Florida and South Georgia have so far been spared. But Xavier Martini, University of Florida entomologist at the …
Two Florida citrus grower associations expressed disappointment over the recent Florida Department of Agriculture and Consumer Services’ (FDACS) decision to deny the use of the pesticide aldicarb in Florida citrus. “We are frustrated in the decision as we believe aldicarb will provide a powerful tool in the fight against citrus greening and can be used safely,” said Florida Citrus Mutual …
The Citrus Research and Development Foundation (CRDF) received 59 proposals for funding of projects in response to the organization’s recent request for proposals (RFP). “This is the best RFP we’ve ever done since I’ve been here,” said CRDF Chief Operating Officer Rick Dantzler. The deadline for submitting proposals was April 26, a day before the CRDF’s board of directors …
