Fundecitrus recently announced two efforts aimed at assisting Brazilian growers with citrus greening. A São Paulo task force will include a focus on the disease, and a credit line will be available for growers with greening in their orchards. In addition to greening, the public/private task force will address development of biofertilizer and biological research, studies to increase productivity in …
How Does OTC Impact the Soil Microbiome?
Sarah Strauss, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) soil microbiologist, joined the June All In For Citrus podcast episode to discuss her research on the interaction of oxytetracycline (OTC) currently being injected into citrus trees and the soil microbiome. She noted that OTC does change the soil microbial community. The good news is that the changes …
ACP Management in High-Density Plantings
By Jawwad Qureshi The Asian citrus psyllid (ACP, Figure 1) is the vector of huanglongbing (HLB) disease associated with the phloem-limited bacterium Candidatus Liberibacter asiaticus. Infected trees start to decline and produce poor-quality fruit, which drops prematurely. Consequently, citrus production has decreased dramatically since the advent of HLB in Florida in 2005. There is no cure for the disease yet. …
Seeking a Partner for OTC
Few would dispute that the approval of oxytetracycline (OTC) for use as a trunk-injection therapy to treat HLB is one of the biggest breakthroughs in the nearly two decades of fighting the disease. Most Florida citrus growers believe the therapy has been a net positive and they are committed to continuing the treatment. However, there’s a stipulation in the labels …
Millennium Block Research Shows Promising Results
A recent update of Millennium Block research at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Indian River Research and Education Center in Fort Pierce indicates the 5,500 trees in the project are yielding promising results. The four trials within the Millennium Block aim to unlock the genetic potential of new scion and rootstock hybrids never tested …
Grove Conservation Easement Expands Panther Habitat
The U.S. Department of Agriculture Natural Resources Conservation Service (USDA NRCS) and The Nature Conservancy (TNC) in Florida have purchased a conservation easement at G Road Grove, a citrus grove and tree nursery in Florida panther habitat. G Road Grove expands the protected area within the Florida Panther Dispersal Zone, a 30,000-acre corridor in Hendry and Glades counties. The …
Researchers Discuss Rising HLB Incidence in Brazil
The incidence of citrus greening disease (HLB) in Brazil’s Citrus Belt of São Paulo and Triângulo/Southwest Mineiro rose from 24.42% in 2022 to 38.06% in 2023, according to Fundecitrus. The association’s annual survey indicates the disease increasingly demands more effective and collaborative measures. At a session of Brazil’s Expocitrus in June, Fundecitrus researcher Marcelo Miranda discussed the development of greening …
Study Shows Florida Residents’ Attitudes on HLB
In the fall of 2022, five University of Florida researchers investigated Florida residents’ attitudes on HLB and Asian citrus psyllids (ACP) using online surveys over a 9-month period. The results of the study, Residents’ contribution to Asian citrus psyllid and citrus greening management in Florida residential habitats, was recently published in the Journal of Integrated Pest Management. Authors Romain Exilien, …
Argentine Orange and Tangerine Forecasts Slashed
The U.S. Department of Agriculture Foreign Agricultural Service (USDA FAS) has reduced its 2023–24 production forecasts for Argentine oranges and tangerines by 44% and 30%, respectively, since the last forecasts. The 2023–24 crops are now expected to be 650,000 metric tons (MT) of oranges and 280,000 MT of tangerines. The decrease in production is due to a combination of factors, …
Teenager Awarded for Investigation of Alternative Trunk-Injection Treatment
Tanishka Balaji Aglave of Valrico, Florida, received the $10,000 H. Robert Horvitz Prize for Fundamental Research for her investigation into a natural alternative treatment against citrus greening disease (known as huanglongbing, or HLB). Aglave, a 15-year-old who attends Strawberry Crest High School and grew up on a citrus farm, injected the trunks of infected citrus trees with an extract from …
Turkish Tangerine, Lemon and Grapefruit Update
The U.S. Department of Agriculture Foreign Agricultural Service (USDA FAS) recently increased its 2023–24 production forecasts for Turkish tangerines, lemons and grapefruit. TANGERINES Overall tangerine production is forecast to increase 55% to 2.88 million metric tons (MMT) due to favorable spring rains and temperature conditions during blossoming in March 2023. Tangerines are the most produced citrus fruit in Türkiye, with …
Study Sheds Light on Defense Against HLB-Spreading Psyllids
A study by researchers from the Guangdong Academy of Agricultural Sciences and South China Agricultural University sheds light on the genetic mechanisms that can defend against Asian citrus psyllid (ACP) infestation. ACP is the vector for HLB, the most devastating disease of citrus. The study was published in Horticulture Research on April 1. It unveils the roles of two cytochrome …
Lawsuit Challenges Farmworker Protection Rule
A coalition of states, including Florida and Georgia, recently joined a lawsuit filed by the Southeastern Legal Foundation (SLF) challenging the U.S. Department of Labor (DOL) Farmworker Protection Rule. DOL announced the final rule in late April, saying it would strengthen protections for farmworkers in the H-2A program. The Farmworker Protection Rule will become effective June 28, 2024. SLF is …
Survivor Grapefruit Cultivars Set for HLB Trials
The U.S. Department of Agriculture Agricultural Research Service (USDA-ARS) citrus scion breeding program recently rediscovered several noteworthy grapefruit cultivars at the A.H. Whitmore Foundation Farm in Groveland, Florida. Among these are the Florida Red, Red Blush and Henderson varieties. These cultivars were originally selected as long shots from the Whitmore Foundation Farm and were planted in 1986. They have survived …
Alico Announces New Contract With Tropicana
Alico, Inc. announced that it entered into a new three-year agreement with its largest customer, Tropicana Brands Group (Tropicana), to supply citrus fruit. The agreement is effective June 5, 2024, through July 31, 2027. This supply agreement succeeds existing agreements that are set to expire at the end of July 2024. This agreement effectively sells the citrus fruit grown on …
Cover Crops for Managing HLB
By Davie Kadyampakeni and Miurel Brewer Row middle management is a key area that can improve tree performance. Row middles encompass 80% of citrus orchards, and 70% of the root system of citrus trees was located in row middles before huanglongbing (HLB). Typically, Florida citrus growers manage row middles using physical, chemical and mowing practices, often leaving them free of …
Oriental Fruit Fly Update for California
Federal and state agriculture officials on May 31 removed the Oriental fruit fly (OFF) quarantine in Sacramento County, California. The action was taken by the U.S. Department of Agriculture Animal and Plant Health Inspection Service (USDA APHIS) and the California Department of Food and Agriculture (CDFA) after three OFF life cycles elapsed with no additional detections in the area. The …
PIECES OF THE PAST: Congratulations, Brenda!
For nearly a decade, Brenda Eubanks Burnette has filled Citrus Industry magazine’s Pieces of the Past column with wonderful stories that have preserved Florida’s citrus heritage. Because of her dedication to the industry, she has been selected as this year’s Citrus Achievement Award winner. So, this month we are using her column space to share a few well-deserved congratulatory remarks …
Some Grapefruit Showing Less HLB Symptoms
A recent update of the U.S. Department of Agriculture Multi-Agency Coordination (MAC) Project evaluating multiple grapefruit varieties on different rootstocks reveals that some combinations have less HLB symptoms than others. Jackson has one of the lowest ranks for disease index across the combinations. The healthiest trees in the trial include: At least half of the blocks in the MAC trial …
Türkiye Orange and OJ Production to Climb
Türkiye is expected to produce substantially more oranges and orange juice (OJ) in 2023–24 than in the prior season, the U.S. Department of Agriculture Foreign Agricultural Service (USDA FAS) reported recently. ORANGES The orange yield is forecast to increase 31% to 1.73 million metric tons due to favorable weather conditions in spring 2023, USDA FAS stated in a semi-annual report. …





























