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Below you'll find a list of all posts that have been tagged as “UF/IFAS”
Do not apply recovery techniques immediately after a freeze, cold-hardy citrus growers were advised after freezes hit their groves in December 2022 and January 2023. The best strategy is to wait to observe new growth until at least late spring, researcher Muhammad Shahid told the Georgia Citrus Association at its recent annual meeting. Shahid is a University of Florida Institute …
While the Florida citrus industry has seen its fair share of challenges from HLB and recent hurricanes, the industry still swings a big stick according to research conducted by the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS). The study, The 2020-21 Economic Contributions of the Florida Citrus Industry, was released in February. Christa Court, UF/IFAS economist and …
By Ron Cave In 1946, leaders with the University of Florida and the Indian River Citrus League ascertained the need for an event where growers, the trade organization and researchers might network and attend educational sessions presented by scientists. So began the first-ever Indian River Citrus Seminar, which would later become the Florida Grower Citrus Show. In the 1960s, Florida’s …
By Jawwad Qureshi A wide range of pests colonize citrus crops. Most of these species target tree canopies, and a few feed on the roots. Damage is either direct through feeding on the plant tissues or it can be twofold if the pest is also responsible for transmitting the pathogens of a disease or making conditions favorable for the disease …
Citrus growers should emphasize leafminer management this year to preserve new flushes. This is especially important for those producers affected by the Christmas freeze event. The management strategy should include pheromone disruptions, which can help reduce pest populations. Xavier Martini, assistant professor of entomology at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) North Florida Research and …
Summer is “a field day for weeds,” Ramdas Kanissery said in a March 29 presentation about weed control for citrus. The University of Florida Institute of Food and Agricultural Sciences assistant professor provided a progressive step-by-step approach to suppressing weeds during the summer. CONTROL EXISTING WEEDSGrowers can get off to a good start by controlling existing weeds with post-emergent herbicides. …
The 2023 Florida Grower Citrus Show, presented by AgNet Media, will be held April 13 in Fort Pierce. The show has a new venue this year — the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Indian River Research and Education Center (IRREC) and the adjacent U.S. Department of Agriculture (USDA), Agricultural Research Service, U.S. Horticultural Research Laboratory. …
By Lauren Diepenbrock Recently, several articles have highlighted a potential new threat to the citrus industry in Florida, the lime swallowtail. While it is true that this pest has been found in residential citrus plantings in Key West, it is unlikely that lime swallowtail will have much of an impact, if any, on Florida’s commercial citrus industry. Lime swallowtail is …
It’s almost April, and that means it’s almost time for the Florida Grower Citrus Show! The soon-to-be-released April issue of Citrus Industry magazine features an event guide to the new and improved Florida Grower Citrus Show. Included is a complete seminar schedule and list of participating exhibitors and sponsors for the April 13 event. Now under AgNet Media management, the …
The Florida Citrus Commission on March 15 heard an update on four sponsored projects under the New Varieties Development and Management Corp. (NVDMC). Peter Chaires, NVDMC executive director, provided the updates: 1. The primary effort of the U.S. Department of Agriculture Agricultural Research Service’s Citrus Scion Breeding Program is to select varieties throughout the 2022–23 season that have commercial potential. …
By Nian Wang How the huanglongbing (HLB) pathogen Candidatus Liberibacter asiaticus (CLas) causes damage to infected citrus trees has been widely debated. A recent study demonstrates that HLB is an immune-mediated plant disease (Ma et al., 2022). It was discovered that CLas infection of citrus stimulates systemic and chronic immune response in phloem tissues, including reactive oxygen species (ROS) production, …
Growers have been deploying several new therapies aimed at improving the health of HLB-infected citrus in recent years. Plant growth regulators like gibberellic acid, 2,4-D and brassinosteroids have demonstrated the ability to improve tree health and help in fruit retention. More recently, direct delivery of oxytetracycline hydrochloride (OTC-HCl) via trunk injection has been approved for use in groves. There is …
Plant pathologist Megan Dewdney put emphasis on new plantings during a mid-March discussion of phytophthora management for citrus trees infected with HLB. Dewdney is a University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) associate professor at the Citrus Research and Education Center, where she spoke. Dewdney’s presentation was part of an OJ break hosted by UF/IFAS Extension multi-county …
By J. Scott Angle, jangle@ufl.edu, @IFAS_VP Overnight success comes after years of hard work. In science, that means the “eureka” moment isn’t a moment at all. It comes after years of research that can cost millions of dollars. That’s a level of resources that the federal government helps deliver. We’re fortunate that the U.S. Department of Agriculture’s National Institute of …
The short timeframe for satsuma mandarins to be harvested and sold in the fall created a bottleneck of supply around the Thanksgiving holiday in 2022. An excess supply led to a challenge for growers attempting to sell their fruit when demand diminished, according to Kim Jones, who grows and packs citrus in Florida and Georgia. “The week of Thanksgiving when …
By Davie Kadyampakeni, Samuel Kwakye, Hossein Ghoveisi, Lauren Diepenbrock and Jawwad Qureshi Deficit irrigation practices can reduce water and energy costs, thus potentially increasing water-use efficiency and water savings in citrus production. Irrigation management through deficit applications, if timed at periods of reduced water demand, could help trigger increased root water and nutrient uptake while synchronizing citrus flush patterns. These …
University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) multi-county citrus Extension agent Ajia Paolillo recently provided information about two commercial oxytetracycline hydrochloride products approved for use against HLB. TJ Biotech LLC was the first company to receive approval from the Environmental Protection Agency (EPA) for trunk injection of this formulation. EPA granted TJ Biotech a Federal Insecticide, Fungicide, …
After HLB disease was first found in Florida in 2005, many people were discouraged from growing citrus in their home landscapes. There were no citrus recommendations tailored for home gardeners in the HLB era. Now, the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) has responded to home gardeners who want to plant citrus trees again. Researchers are …
By Tripti Vashisth and Taylor Livingston Grower-led trials in 2022 showed positive results of gibberellic acid (GA) treatment on Hamlin trees in Florida. This article primarily discusses two growers’ trials in detail. Both sites showed improvement in fruit production from the GA application. Many growers have adopted GA applications in the past year as part of their grove management strategy. …
Allowing citrus hybrids with certain criteria in orange juice (OJ) was one of several issues addressed in a recent workshop about potential changes to OJ’s standard of identity. Peter Chaires, executive director of the New Varieties Development and Management Corp., discussed benefits of increasing the hybrid allowance in OJ. Chaires presented a consumer study of juices conducted by University of …
