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Below you'll find a list of all posts that have been categorized as “Huanglongbing (HLB)/Citrus Greening”
How science is the key weapon in the fight against Citrus Greening. That’s coming up on This Land of Ours. This week we’re focusing on technology in agriculture. Candidatus Liberibacter asiaticus (CLas) is the bacterial pathogen that causes “citrus greening disease,” one of the most destructive diseases of citrus worldwide. PPQ scientists are harnessing the power of CRISPR/Cas systems to …
(Atlanta, GA/GDA/June 14, 2022) — The Georgia Department of Agriculture (GDA) is alerting commercial and backyard citrus growers that citrus canker has been found in the state. Late last week, the U.S. Dept. of Agriculture, Plant Protection and Quarantine (USDA APHIS PPQ) laboratory confirmed a suspected sample from a commercial citrus grove in Decatur County was citrus canker. “Citrus canker is …
What is believed to be the most northern HLB find in Florida was made the first week of November in a backyard Satsuma tree in Tallahassee. A homeowner sent photos of the tree’s symptoms to Leon County Extension horticulture agent Mark Tancig, who collected samples that were confirmed as HLB. “I’ve told the homeowner he should remove it (the tree), …
The citrus disease HLB, also known as citrus greening, has a formidable enemy in a fungal pathogen, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers reported. The fungus is Cordyceps javanica, strain Apopka, discovered by research scientist Lance Osborne in the mid-1980s. The fungus was isolated from dead insects on plants in a greenhouse at the UF/IFAS Mid-Florida Research …
Some common diseases to look out for to protect your citrus crop. That’s coming up on This Land of Ours. Growing homegrown citrus fruits is great if you have the right climate for it, but make sure you’re ready for these citrus diseases. Citrus canker is a highly contagious bacterial disease that leads to yellow halo-like lesions on the fruits, leaves, …
Citrus flowers profusely, but less than 2% of the flowers become harvestable fruit. In other words, 98% of the flowers seen during bloom will end up on the grove floor at some point during fruit development, whether as a flower, fruitlet, young fruit or mature fruit. Profuse flowering allows trees to produce enough fruit to carry forward seeds. However, excessive …
(TALLAHASSEE/June 9, 2021) — In a victory for environmental and farmworker groups, an appeals court has overturned federal approval of a controversial pesticide that supporters say could help fight a disease that has caused heavy damage in Florida’s citrus industry. The decision this week by a panel of the U.S. Circuit Court of Appeals for the District of Columbia came …
(TALLAHASSEE, Wednesday, May 12, 2021/NSF) — Amid arguments about the troubled citrus industry and the health of farmworkers, a chemical company is challenging a state decision to block a pesticide that could help fight a disease that has caused massive damage in citrus groves. AgLogic Chemical, LLC filed an administrative challenge Tuesday, about three weeks after the state Department of …
A University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researcher has found a material that can be used to silence essential genes within Asian citrus psyllids and in the HLB-causing bacterial pathogen that the psyllids spread. The material is 2’-deoxy-2’-flouro-d-arabinonucleic acid antisense oligonucleotides (FANA ASO), small-sized single-stranded nucleic acids. The discovery was made by Kirsten Pelz-Stelinski, an associate …
By targeting Asian citrus psyllids on an area-wide scale and focusing on several individual properties simultaneously, growers can minimize psyllid movement between groves, reduce HLB transmission and maintain citrus production at a profitable level. Generally, most psyllid sprays are applied on a calendar or threshold basis, resulting in high-spray frequencies and associated costs. Because of the Asian citrus psyllid’s high …
