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 …
Rubio, Nelson Urge Senate Leaders To Address Citrus Greening in Tax Legislation
RUBIO, NELSON URGE SENATE LEADERS TO ADDRESS CITRUS GREENING IN TAX LEGISLATION LATER THIS YEAR (Washington, D.C.- July 21, 2016: News Release from office of Sen. Rubio) – U.S. Senators Marco Rubio (R-FL) and Bill Nelson (D-FL) today urged Senate leaders of both parties to make citrus greening a priority in tax legislation expected to be considered by Congress …
Citrus Growers Surveyed on Percent of Trees Infected
Florida citrus growers: 80 percent of trees infected by greening By: Brad Buck, 352-294-3303, bradbuck@ufl.edu Source: Ariel Singerman, 863-956- 8870, singerman@ufl.edu GAINESVILLE, Fla. — Florida’s citrus growers say as much as 90 percent of their acreage and 80 percent of their trees are infected by the deadly greening disease, which is making a huge dent in the state’s $10.7 billion …
Disrupting Psyllid Mating to Control HLB
By: R. W. Mankin, B. Rohde and S. McNeill The Asian citrus psyllid (ACP) is the primary vector of the devastating huanglongbing (HLB) disease of citrus. Efficient monitoring of ACP at low population densities is essential to conduct management programs with timely effectiveness for protection of Florida groves. Extensive research is being conducted to better understand ACP biology and behavior, …
USDA Grant To Attack Citrus Greening
Researchers share $4 million USDA grant to attack citrus greening From UF/IFAS: By: Kimberly Moore Wilmoth and Kathleen Haughney GAINESVILLE, Fla. — International researchers, including ones at the University of Florida and Florida State University, are sharing in a $4 million grant from the United States Department of Agriculture to attack the problem of citrus greening, a disease that has …
Complex Responses to IPCs in Mandarin Trees
Recent research showed that individual protective covers (IPCs) proved highly effective in reducing Asian citrus psyllid (ACP) populations and thereby preventing HLB infection in three mandarin cultivars. However, overall tree response varied. The research was published in the Journal of the American Society for Horticultural Science. The authors are Saoussen Ben-Abdallah, Susmita Gaire, Ute Albrecht, Ozgur Batuman, Jawwad Qureshi and …
Pest Management Challenges in CUPS
By Lauren Diepenbrock Citrus under protective screen (CUPS) has provided growers with a profitable method for producing fresh fruit in Florida. Growers who have implemented this system have noted quality fruit production and reduced inputs. However, when changes are imposed to the production environment, they are also imposed to the invertebrate pest complex, which can be either beneficial or detrimental …
Sweet Orange Scab and HLB Quarantines Updated
Agriculture officials announced the expansion of the sweet orange scab (SOS) quarantine and establishment of a new HLB quarantine area, both in California. SWEET ORANGE SCAB On March 11, the quarantine area for SOS in the Van Nuys area of Los Angeles County was expanded by 80 square miles. The U.S. Department of Agriculture Animal and Plant Health Inspection Service …
CUPS Trees Survive Freeze Nearly Unscathed
During a Feb. 26 Highlands County ag tour hosted by University of Florida Institute of Food and Agricultural Sciences Extension, participants had the opportunity to go inside a citrus under protective screen (CUPS) pod. Bill Bohde, director of agronomy for Dundee Citrus Growers Association, led the tour group through a 10-acre CUPS pod at Fort Meade in neighboring Polk County. …
Pest Control in Protected Production Systems
In a recent virtual presentation, entomologist Jawwad Qureshi discussed monitoring and control measures for citrus pests in trees under individual protective covers (IPCs) and in citrus under protective screen (CUPS). Qureshi is an associate professor at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Southwest Florida Research and Education Center in Immokalee. MONITORING METHODS Qureshi’s noted that …
Federal HLB Quarantine Established in Arizona
Federal agriculture officials recently established an area quarantined for HLB in, paralleling the intrastate quarantine that the Arizona Department of Agriculture (AZDA) established on Feb. 7, 2025. The quarantined area of approximately 9 square miles is in the Nogales area of Santa Cruz County. The U.S. Department of Agriculture Animal and Plant Health Inspection Service (APHIS) took the recent action …
Growers Can Stay Productive in the Face of HLB
Despite declaring there will be no silver bullet for HLB, Ozgur Batuman in a Jan. 21 virtual seminar said growers using integrated pest management (IPM) tools “can stay productive.” However, the University of Florida Institute of Food and Agricultural Sciences associate professor also warned that producing citrus juice in Florida “will not be easy or cheap.” Oranges are by far …
Benefits and Risks of Individual Protective Covers
University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers have long extolled the virtues of individual protective covers (IPCs). Multi-county citrus Extension agent Edwin Gutierrez-Rodriguez does the same but also warns of potential risks. Following is information from a recent UF/IFAS blog article he authored. In the ongoing battle against huanglongbing (HLB), also known as citrus greening disease, …
CRDF Considers Research Management Committee Recommendations
The Citrus Research and Development Foundation (CRDF) convened its November board of directors meeting to take up recommendations from its Research Management Committee. According to Rick Dantzler, CRDF chief operating officer, one of those recommendations was funding a proposal from Swadesh Santra, who is a professor of chemistry with the University of Central Florida. “This funding would allow Dr. Santra …
Golden Ridge Groves to Open CUPS U-Pick and Farm Market
Golden Ridge Groves will open Nov. 20 in Alturas, Florida. The new business includes u-pick in a citrus under protective screen (CUPS) structure and a farm market. The operation will be open for the season Tuesday through Saturday, 10 a.m. to 6 p.m. Husband and wife owners Shane and Katie Bevilacqua answered questions about the new business. Q: When will …
Prolong Tree Health by Combining Covers and Brassinosteroids
As every Florida citrus grower knows, it has been difficult to grow trees and fruit profitably since huanglongbing (HLB) disease was discovered in the state in 2005. Soon after the disease was discovered, officials determined it couldn’t be eradicated largely because the Asian citrus psyllids (ACP) that spread it showed up years earlier and were in virtually all citrus-producing regions. …
Fall Insect and Mite Management
By Lauren Diepenbrock Unlike northern regions, fall in Florida is not generally a time when insect, mite and other invertebrate pest populations decline rapidly. In Florida citrus, we generally see the opposite of this trend. In the hot, dry end of summer and early fall, mite populations often soar, requiring management to prevent excessive damage to fruit. (See The Florida …
HLB Management Requires an Integrated Approach
At the recent Citrus & Specialty Crop Expo, Ozgur Batuman reminded seminar attendees there is no silver bullet for HLB management. Instead, the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researcher proposes that growers integrate several tools for the management of HLB. These tools include a variety of ways to control HLB-spreading psyllids; oxytetracycline (OTC) trunk injection; …
California HLB Quarantine Area Expanded
Federal and state officials recently expanded the area quarantined for citrus greening disease, also known as huanglongbing or HLB, in California. They expanded the quarantined area in the San Clemente area of Orange and San Diego counties by 81 square miles. The action was taken by the U.S. Department of Agriculture Animal and Plant Health Inspection Service (APHIS) in cooperation …
Florida Residents Educated About HLB
Residential trees — where citrus greening disease (also known as huanglongbing or HLB) was first detected in the Florida — can serve as reservoirs for disease-spreading Asian citrus psyllids (ACP) if the pests are not properly managed. Recognizing that disease prevention is a coordinated effort, the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) is teaching Florida residents …





























