 |  |  |  |  |  |  |  |  |
Below you'll find a list of all posts that have been categorized as “HLB Management”
By Jawwad Qureshi, Lauren Diepenbrock and Davie Kadyampakeni The future of the Florida citrus industry depends on successfully replacing the present bearing tree inventory with new plantings and transitioning them into crop production. This would be a relatively routine process were it not for the ubiquitous presence of huanglongbing (HLB) and its vector, Asian citrus psyllid (ACP). Early infection can …
At the recent Citrus Research and Education Center (CREC) field day and open house, Arnold Schumann showed visitors a Jackson grapefruit trial aimed at protecting trees from HLB. Schumann is a professor at the University of Florida Institute of Food and Agricultural Sciences CREC in Lake Alfred. The trial combines the use of individual protective covers (also known as IPCs …
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), …
University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers gave a crowd of growers suggestions that can help keep citrus trees healthy. The panel discussion was part of the Nov. 16 open house and field day at the UF/IFAS Citrus Research and Education Center in Lake Alfred. HLB-affected trees need enhanced nutrition “throughout the growing season,” said horticulturist …
Kelly Morgan recently summarized several recommended changes in Florida citrus production practices brought on by the devastating disease HLB. Morgan is a University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) soil and water science professor. He discussed what growers need to know to follow best management practices (BMPs) at the recent Citrus Nutrition Day at the UF/IFAS Citrus …
Researchers at the University of Florida have found a way to manage groves infected with HLB by managing the timing of their fertilization. By splitting the application of nutrients to citrus rootstocks, they have been able to improve plant growth and fruit yields. The research was recently published in Soil Science Society of America Journal. Alisheikh Atta and his colleagues …
At the 2021 Citrus Expo, entomologist Lukasz Stelinski suggested ways growers can manage HLB-spreading Asian citrus psyllids (ACP) while reducing costs. Some of the University of Florida Institute of Food and Agricultural Sciences entomologist’s key points follow: Psyllid density is related to tree stress; more psyllids lead to higher damage, compromising tree health and yield. Spray for adults at bud …
In the search for solutions to HLB, a formulation based on oak leaf extract has been developed by citrus growers Travis Murphy and Tom Thayer, the Indian River Citrus League’s October River Ramblings newsletter reported. The formulation was developed following the growers’ observations that citrus trees under oak trees were free of HLB compared to nearby field trees that had …
The work that University of Florida Institute of Food and Agricultural Sciences faculty members have done on HLB will be featured Nov. 16 at the Citrus Research and Education Center (CREC) in Lake Alfred. The center will host growers and others that day at an open house and field day. The morning program will kick off with a panel discussion …
Two short videos about HLB-related research were available at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) booth at Citrus Expo in August. The videos are available online for viewing. UF/IFAS researcher Tripti Vashisth narrated the video, HLB-Associated Preharvest Fruit Drop. She said up to 40% of fruit can drop from mildly HLB-symptomatic trees shortly before harvest, …
The Valencian Association of Farmers (AVA-ASAJA) recently stated it is essential that the Spanish government and the European Union (EU) prevent the advance of Trioza erytreae, vector of the citrus disease HLB. The association issued that statement after learning that the insect has reached the Algarve (southern Portugal). The vector’s advance from the north and center of the Portuguese country …
A Florida citrus grower and a Florida citrus researcher were quoted extensively in a recent Australia Broadcasting Corporation TV show about HLB. Grower Kyle Story and University of Florida Institute of Food and Agricultural Sciences plant pathologist Megan Dewdney appeared in an approximately 12-minute segment of the show Landline. The segment’s focus was Australia’s effort to keep HLB out of …
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 …
By Tripti Vashisth Gibberellic acid (GA) is a naturally occurring plant hormone. GA has been used in citrus production for years to improve fruit set and size, reduce preharvest drop and delay harvest. Recent findings show that monthly foliar application of GA from September to January can improve productivity of HLB-affected Valencia trees. On average, a 30% increase in yield …
It’s not a question of if citrus greening disease will be an issue for North Florida and South Georgia citrus growers, but when will it be. Fred Gmitter, a University of Florida Institute of Food and Agricultural Sciences citrus breeder, believes the disease’s impact in both areas is inevitable. He shared his assessment during a recent Cold Tolerant Citrus Production …
Many Florida citrus growers were among the approximately 300 people who registered for a Sept. 21 virtual seminar telling how gibberellic acid (GA) can improve Valencia orange yields. Valencias, at 30.1 million boxes, made up slightly more than half of Florida’s total citrus crop in the 2020-21 season. Presenter Tripti Vashisth started her presentation by saying that GA, already available …
The Asian citrus psyllid (ACP) is not yet well established in Georgia. University of Georgia (UGA) assistant professor and small fruits pathologist Jonathan Oliver wants to keep it that way. The ACP vectors citrus greening disease (HLB), which has decimated Florida’s citrus production. Oliver encourages producers to scout their groves regularly to avoid a similar fate happening in Georgia. “It’s …
A University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researcher recently determined how bacterium causes the devastating citrus disease HLB. Information about further research into ways the discovery can help growers reverse the effects of HLB and improve tree health will be presented this fall. MORE DETAILS TO COMEUF/IFAS Citrus Research and Education Center (CREC) Director Michael …
According to researchers in Florida and California, kaolin clay, especially red kaolin, aids in the management of Asian citrus pysllids (ACP) and the HLB they spread, among other attributes. Christopher Vincent of the University of Florida Institute of Food and Agricultural Sciences and Monique Rivera of the University of California at Riverside recently presented a webinar about kaolin. The University …
Jonathan Oliver, University of Georgia assistant professor and small fruits pathologist, is concerned about the potential impact of citrus greening disease in Georgia. That’s why he is encouraging Georgia growers to quickly dispose of infected trees if any are found. “Once greening becomes really widespread and established in a lot of our trees, it’s really hard to stop it,” Oliver …
