An area quarantined for huanglongbing (HLB), also known as citrus greening disease, in California was recently expanded. The U.S. Department of Agriculture Animal and Plant Health Inspection Service (APHIS) in cooperation with the California Department of Food and Agriculture (CDFA) issued the expansion. The quarantined area in the Mission Viejo area of Orange County expanded by approximately 85 square miles. …
Fundecitrus Researchers Participate in International Citrus Conference
Researchers with Brazil’s Fundecitrus discussed HLB-related topics at the recent 15th International Citrus Conference in South Korea. Fundecitrus’ Franklin Behlau participated in the section of papers related to HLB, also known as citrus greening disease. Most of the papers provided updates on the disease situation in different locations, including Florida, China, India, Nepal, Indonesia, Iran and Brazil. Behlau discussed the …
Costa Rican Orange Production
The U.S. Department of Agriculture Foreign Agricultural Service (USDA FAS) expects Costa Rican orange production to increase approximately 11% in 2024–25, to 250,000 metric tons. Production in 2023–24 was lower than expected at 225,000 metric tons as a result of erratic rainfall patterns associated with the El Niño weather phenomenon. The area planted in oranges is expected to remain unchanged …
CUPS Success Rate a Relief for Researcher
The success of citrus under protective screen (CUPS) in protecting Florida citrus from citrus greening, also known as huanglongbing or HLB, was not surprising to Arnold Schumann. The professor of soil fertility and water quality at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Research and Education Center is thankful research had yielded a temporary solution …
Improving ACP and HLB Control in Residential Settings
By Romain Exilien and Xavier Martini Residential gardens serve as reservoirs for Asian citrus psyllids (ACP) and citrus greening disease (also known as huanglongbing or HLB) due to unmanaged citrus trees. The University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) conducted a survey to assess residents’ needs regarding ACP and HLB management. The survey examined their current control …
HLB-Tolerant Hybrid Varieties Highlighted
Two varieties that tolerate HLB and produce ample fruit yield and juice were the highlights of the recent Millennium Block Field Day in Fort Pierce, Florida. The 20-acre Millennium Block at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Indian River Research and Education Center (IRREC) examines fresh fruit varieties and rootstocks. “The two varieties that give …
IMG Citrus Moving Forward With More CUPS
A Nov. 22 Lake County farm tour, hosted by University of Florida Institute of Food and Agricultural Sciences Extension, included a visit to the 13-acre citrus under protective screen (CUPS) site owned by IMG Citrus. Located in Groveland, the facility consists of Ruby Red grapefruit on Swingle rootstock planted in May 2022. Clint Updike, IMG citrus production manager, told farm …
Florida Researchers Visit Brazil’s Citrus Industry
University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) citrus researcher Fernando Alferez recently visited Brazil’s Fundecitrus, as well as orchards and experiments in Brazil’s citrus region. Alferez, an associate professor of horticulture at the Southwest Florida Research and Education Center, was accompanied by researchers from Fundecitrus and Embrapa Cassava & Fruits. The project coordinator of Florida’s Citrus Research …
HLB Confirmed on California Inactive Citrus Acreage
The California Department of Food and Agriculture (CDFA) has confirmed the detection of the citrus plant disease huanglongbing (HLB) in inactive citrus acreage in the city of Yorba Linda, Orange County. The detections mark the first time HLB has been confirmed in plant samples on non-residential, non-nursery citrus acreage. The detection site, which is not currently operational or being cultivated …
California HLB Quarantine Expanded
Agricultural officials recently expanded the areas in California quarantined for citrus greening disease [also known as huanglongbing (HLB)], which is spread by Asian citrus psyllids. The quarantined area in Orange and Riverside counties was increased by a total of approximately 31 square miles. The U.S. Department of Agriculture Animal and Plant Health Inspection Service (USDA APHIS) in cooperation with the …
Ongoing Research Shows the Promise of Trunk-Injection Therapy
Trunk injection of oxytetracycline (OTC) has been the center of attention in Florida citrus for the past two years since the Environmental Protection Agency registered formulations of the material for use. But experience with antibiotics in Florida citrus is not new. That was part of the message Lukasz Stelinski delivered to attendees of the Citrus & Specialty Crop Expo in …
CUPS Expensive but Beneficial
The benefits of implementing citrus under protective screen (CUPS) could be major for growers in the cold-hardy region. But they first must overcome the major limiting factor associated with the system — its cost. Arnold Schumann, a professor of soil fertility and water quality at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Research and Education …
Post-Hurricane Pest Management
University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researcher Lauren Diepenbrock recently offered post-hurricane observations and management suggestions for some insects and snails. Diepenbrock is an assistant professor at the Citrus Research and Education Center. BULIMULUS SNAILS Related Bulimulus snail species have been found to lay eggs in the fall after major rain events. Both small and larger …
Dundee Citrus Growers Association Celebrates 100 Years
Dundee Citrus Growers Association has struggled with the same major setbacks as the rest of Florida’s citrus industry, including multiple freezes in the 1980s and HLB in this century. But Dundee, which is celebrating its 100th anniversary, has not only survived but has become the state’s largest citrus cooperative. A recent video recounts the association’s history, focusing on the growth, …
Australian Lime Interstocks to Combat HLB
By Ozgur Batuman, Sanju Kunwar and Ana Redondo In a promising effort to protect citrus from huanglongbing (HLB), University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers are exploring the potential of Australian lime as an interstock graft for Valencia scions with Swingle rootstock. The interstock technique uses various limes, known for their natural HLB-tolerant peptides, between the …
Top Pruning Evaluated as HLB Strategy
A Brazilian study evaluated the effects of top pruning on orange trees located on the edges of an orchard as part of an HLB management strategy. The pruning was an attempt to attract the HLB-spreading psyllid from external areas to the orchard edges and control it, reducing its dispersion into the orchard. Fundecitrus and Embrapa Cassava and Fruits conducted the …
Sneak Peek: November 2024 Citrus Industry
The November issue of Citrus Industry magazine features some of the faces of Georgia’s citrus industry. The cover story is a profile of citrus grower Lindy Savelle. She didn’t grow up in the citrus industry, and farming was not her first career. But her unconventional path has led her to become a leader in Georgia’s emerging citrus industry. Savelle serves …
Post-Hurricane Disease Concerns
Phytophthora, citrus black spot and HLB are among diseases that could be spread in Florida groves as a direct or indirect result of Hurricane Milton, researcher Megan Dewdney cautioned. Dewdney, a University of Florida Institute of Food and Agricultural Sciences associate professor of plant pathology, offered suggestions for dealing with those diseases during a recent hurricane recovery webinar. PHYTOPHTHORA Phytophthora …
Immediate Response Required When Managing HLB
The first chore for growers in the cold-hardy citrus region when managing citrus greening is scouting for the disease and its vector, the Asian citrus psyllid. The next step is prompt removal of any trees infected with the disease, says Jonathan Oliver, University of Georgia (UGA) assistant professor and small fruits pathologist. “At this point, we think greening is still …
Brazilian Citrus Researchers Discuss Pest Management
Fundecitrus researchers Marcelo Miranda and Wellington Ivo Eduardo participated in the recent XXIX Brazilian Congress of Entomology in Uberlândia in the state of Minas Gerais. In a round table discussion on fruit plant pests, Miranda addressed the challenges of implementing integrated pest management in citrus for insect vectors of pathogens. This includes the leafhopper that transmits citrus variegated chlorosis and …





























