 |  |  |  |  |  |  |  |  |
Below you'll see everything we could locate for your search of “disease”
Timing of fungicide sprays is the key to controlling the postbloom fruit drop (PFD) that caused many Florida citrus growers severe problems this year. That was a central message that University of Florida researcher Natalia Peres delivered at Citrus Expo this summer. In this interview, Peres discusses the keys to proper spray timing, starting with bloom. Peres says longer bloom …
By: Ernie Neff Mexican fruit flies were a major nuisance to Dale Murden this spring. “As a fresh fruit grower in south Texas, I have to say Mexican fruit fly is our biggest worry,” the citrus grower and president of Texas Citrus Mutual said. The fruit flies infested Texas’ three-county (Cameron, Hidalgo and Willacy) citrus industry in November 2015, prompting …
Citrus growers sometimes ask University of Florida entomologist Phil Stansly why they should continue to spray for HLB-spreading psyllids when trees are already infected with the disease. Stansly answered that question at Citrus Expo in August. “There are two issues with HLB,” Stansly says in this interview with Tacy Callies summarizing his Expo presentation. “One is incidence. In other words, …
U.S. House Gives Citrus Tax Incentive Overwhelming Bipartisan Support The U.S. House of Representatives overwhelmingly passed a measure Wednesday that provides growers with an incentive to plant more trees and bolster the ailing Florida citrus industry. By a 400-20 vote, Republicans and Democrats approved the Emergency Citrus Disease Response Act which allows growers to immediately expense the cost of planting …
In the worst-case scenario projected by economists Wednesday, Florida orange production could plummet to 27 million boxes in 10 years. Florida orange production last season was 81.5 million boxes. As recently as the 2003-04 season, Florida produced 242 million boxes of oranges. Production declines are primarily caused by HLB, the deadly disease first discovered in Florida in 2005. But the …
By Tripti Vashisth and Troy Gainey In the last 11 years, Florida orange production has declined more than 60 percent. This dramatic reduction in yield is attributable to multiple causes, including loss of citrus acreage in the state, citrus canker and other diseases, but huanglongbing (HLB) is now recognized as the primary reason for declining citrus yields. HLB-affected trees are …
Florida Citrus Mutual on Wednesday applauded the House Ways and Means Committee for passing a measure that would provide growers with an incentive to plant more trees and bolster the ailing Florida citrus industry. Sponsored Content5 Facts About Fire Ants and How to Control ThemApril 30, 2024BRAZILIAN RESEARCH RESULTS IN A UNIQUE PRODUCT FOR HLB MANAGEMENTApril 1, 2024Protect Your Groves …
Planting new groves in the face of HLB has become a daunting task for Florida growers. At the recent Citrus Expo, University of Florida researcher Ute Albrecht offered suggestions for those taking on the challenge. “Among the important things to consider when planting new groves are the site preparation, the planting of the trees, weed management, irrigation and nutrition, and …
By Stephanie Slinski Evaluating how well bactericides, nutritional programs or other treatments work against HLB can be difficult. Symptoms are not uniform between trees in a grove, and tree health fluctuates throughout the season, which may give the appearance of an effect. Rigorous field trials are the best way to test new treatments, but not every treatment program can be …
By Megan Dewdney, Jeff Rollins, Nan-Yi Wang and Ke Zhang Citrus black spot (CBS) has become established in the groves of Collier and Hendry counties. In other citrus-growing regions of the world where CBS is present, the sexual fruiting bodies of the fungus, known as pseudothecia, form in decomposing leaf litter. Approximately 50 to 180 days following leaf drop, the …
By: Brad Buck GAINESVILLE, Fla. — A chemical treatment known as a bactericide could help preserve citrus trees from the potentially deadly and costly greening disease, a new University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) study shows. Citrus is estimated as a $10.9 billion-a-year industry in Florida and the finding could be key to helping the state’s …
By Bill Castle (Editor’s note: Click on the graphs throughout the article to enlarge them.) By classic biological definition, a particular citrus rootstock-scion combination when infected with Candidatus Liberibacter asiaticus (CLas) would be considered tolerant if infected trees had no more than slight reductions in performance, sometimes accompanied by a reduced level of the pathogen. That definition implies that the …
Research on HLB-tolerant trees and better citrus varieties is being conducted in Gainesville, outside the Florida citrus belt. University of Florida scientist Jose Chaparro discusses the work. “In Gainesville we have essentially the youngest citrus breeding program in Florida,” Chaparro says. “In the future, we hope to be able to provide both HLB and canker resistance in our selections.” Such …
Rick Kress, senior vice president of research commercialization for Southern Gardens Citrus will present a webinar titled “Can We Live Without Citrus?” on August 25 from 11:00 a.m. to 12:00 p.m. EDT. Can you imagine what your store would look like if the orange juice section was suddenly empty or produce shelves were void of all oranges, grapefruit, lemons and …
A Citrus Research and Development Foundation (CRDF) Research Management Committee meeting was called on June 29, 2016, to discuss post-bloom fruit drop (PFD) caused by Colletotricum spp. in Florida. In this meeting, it was suggested that there is an opportunity to retrospectively investigate PFD management strategies from 2016 to determine if grower treatment programs led to variable results. A survey …
From Kevin Shea, Administrator, USDA Animal and Plant Health Inspection Service: The Florida citrus industry is under siege and the invader is a tiny bug called the Asian citrus psyllid (ACP). The ACP spreads a disease known as Huanglongbing (HLB) or citrus greening, and together they are destroying groves that have been cultivated by families for generations. But all is …
BASF announces that Priaxor® fungicide has received federal and Florida approval for use on all citrus varieties in Florida. Priaxor® fungicide is already being used in sugarcane and vegetables throughout the state and the United States. Priaxor® fungicide is a mixture of the active ingredient in Headline® fungicide and a new systemic fungicide Xemium®. Testing in Florida has shown the …
Citrus growers now have yet another reason to attend the 2016 Citrus Expo. They can receive a complimentary copy of a brand new book, “The Critical Importance of Citrus Tree Nutrition.” Authored by citrus Extension agent Mongi Zekri, the book will debut at the Citrus Expo Shindig, a special party to celebrate the show’s 25th anniversary. The shindig takes place …
Asian citrus psyllids are detected sporadically in the San Joaquin Valley — home to most California oranges and mandarins — and are endemic in Southern California lemon country. But as far as anyone knows, the pests that spread HLB in Florida and Texas have not spread the disease into California’s commercial citrus groves. California HLB detections have been limited to 17 …
By Evan G. Johnson and Renato Bassanezi In February 2016, I (Evan Johnson) had the opportunity to tour citrus production areas in Parana and São Paulo states in Brazil as part of collaborations with researchers at Fundecitrus, a grower-supported research foundation. In addition to the fruitful discussions with research colleagues, I also had the opportunity to visit with growers in São …
