Fifteen early career scientists at the University of Florida Institute of Food and Agricultural Scientists (UF/IFAS) have been awarded grants to help solve global issues such as thwarting invasive pests, improving crop varieties, battling citrus greening and preserving our environment. Sponsored ContentTake Advantage of Rising Temperatures to Treat for Fire AntsJuly 1, 2025Take the Sting Out of Fire AntsJune 1, …
Update on $9 Million NuPsyllid Effort Against HLB
Citrus Research and Development Foundation (CRDF) Chief Operations Officer Harold Browning provides an update on a major five-year HLB project that CRDF is managing. “It’s (NuPsyllid) a project that started in 2012, involving a team of scientists from all over the country … And the goal is to build and release into the field the psyllid that has less capacity …
Entomologist Joins UF/IFAS to Help Solve Citrus Greening
An entomologist with 10 years of research focused on the state’s iconic citrus industry has joined the faculty of the University of Florida Institute of Food and Agricultural Sciences’ Indian River Research and Education Center (UF/IFAS IRREC). Named Entomologist of the Year in 2012 by the Florida Entomological Society, Jawwad A. Qureshi was selected for a new position as assistant …
Veteran Biologist Named Director
Veteran Biologist Named Director of UF/IFAS Entomology Lab By Brad Buck GAINESVILLE, Fla. — Just as the Zika virus is causing concern worldwide, a University of Florida insect specialist with 36 years of experience at the Florida Medical Entomology Laboratory has been named the lab’s new director. Professor Jorge Rey started at FMEL, part of the UF Institute of Food …
Suicide Strategy Found for Weeds
Parasitic weeds are ruthless freeloaders, stealing nutrients from crops and devastating harvests. But what if growers could trick these invaders into self-destructing? Scientists at University of California, Riverside (UCR) think they’ve found a way to turn the weeds’ own biology against them. This trick is detailed in the journal Science. At its heart lies a class of hormones called …
Chilli Thrips Management in Florida
By Maegan Beatty Last month, the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) hosted a citrus insect workshop that covered almost 10 different pests that pose a threat for Florida citrus. Lance Osborne, professor and researcher at the Mid-Florida Research and Education Center, presented research on chilli thrips. Chilli thrips (Scirtothrips dorsalis) can live in over 150 …
Lessons From Oxytetracycline Injection Trials
By Ute Albrecht, Carol Tardivo, Gabriel Pugina, Larissa Nunes, Jasmine de Freitas and Gerardo Moreno Since the approval of oxytetracycline (OTC) injection to manage citrus greening (huanglongbing, HLB) in Florida, the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) plant physiology team at the Southwest Florida Research and Education Center (SWFREC) has completed various research trials with multiple …
Research Center to Combat Brazilian Citrus Diseases
The Applied Research Center for Innovation and Sustainability in Citrus Farming was inaugurated Dec. 12 in a ceremony at the Palácio dos Bandeirantes, seat of Brazil’s São Paulo state government. Its purpose is to combat the main citrus diseases, such as citrus variegated chlorosis, sudden citrus death and above all, citrus greening. The São Paulo Research Foundation (FAPESP), Fundecitrus and …
UF/IFAS Researcher and Postdoc Honored
A University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researcher and her postdoc have been inducted into the Sigma Xi scientific research honor society. The inductees are Sandra Guzmán, assistant professor at the UF/IFAS Indian River Research and Education Center (IRREC) and Gregory Conde, postdoctoral research associate in Guzmán’s Smart Irrigation and Hydrology Laboratory. “Dr. Guzmán and Dr. …
Reduce Post-Hurricane Fruit Drop With PGRs
By Tripti Vashisth and Taylor Livingston Hurricane Milton passed over many citrus-producing counties in Florida, resulting in canopy and fruit loss (especially in early varieties). HLB-affected trees undergo a lot of stress, and now the hurricane has added more abiotic stress to trees. High-speed winds caused significant fruit and leaf drop. The fruit and leaves that escaped the drop during the …
The Good, the Bad and the Ugly: Optimizing OTC Injections
By Ute Albrecht, Caroline Tardivo, Larissa Nunes, Gabriel Pugina, Gerardo Moreno and Jasmine de Freitas As growers are well into the second year of oxytetracycline (OTC) injections since approval for commercial use, more and more data are accumulating. The good news is that in all University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) trials, trees have been responding …
Specialty Crop Block Grant Program Funds Citrus Projects
The U.S. Department of Agriculture Agricultural Marketing Service (USDA AMS) Specialty Crop Block Grant Program awarded 54 grants and 524 sub-award projects totaling $72.9 million for fiscal year 2024. The following citrus projects were included in the funding. CALIFORNIA The California Department of Food and Agriculture (CDFA) received a grant for $448,742 for mitigating huanglongbing (HLB) in citrus using naturally-derived …
Getting a Handle on the Giant Swallowtail
By Amir Rezazadeh The giant swallowtail butterfly (Papilio cresphontes) is a beautiful insect, admired for its large wingspan and vibrant yellow and black coloration. However, for citrus growers, this butterfly is often viewed with less enthusiasm. The larvae of the giant swallowtail, commonly referred to as “orange dogs,” can cause significant damage to citrus trees. Understanding the nature of this …
Psyllid Nanopesticide Developed in Brazil
In Brazil, a more effective and sustainable insecticide for HLB-spreading psyllids was developed by Embrapa (Brazilian Agricultural Research Company) in partnership with the Institute of Chemistry of the State University of Campinas (Unicamp). The work resulted in a controlled-release system of the insecticide thiamethoxam molecule. Encapsulation was performed in polymeric nanoparticles, structures more than 80,000 times smaller than the thickness …
Acadian Plant Health Researcher Discusses Biostimulant Research
Acadian Plant Health (APH) is the largest independent marine plant harvesting, cultivation, and extraction company in the world, and an international leader in sustainable, science-based biological solutions for crops. A team of researchers with Acadian closely studied the effects of Ascophyllum nodosum-based bio-stimulants and how they increase resilience against environmental stresses. Holly Little, director of research and development, speaks with AgNet …
New Tool Helps Growers With Climate Variability
A new web-based tool will help growers reduce risks that come with climate variability. It’s called the climate indicators tool, the newest addition to AgroClimate. AgroClimate is a web-based platform designed 15 years ago by Clyde Fraisse, a University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) professor of agricultural and biological engineering. Growers can use the new tool …
HLB Could End Georgia’s Citrus Industry
One California citrus leader believes Georgia should respond more aggressively to huanglongbing (HLB, also known as citrus greening) for the sake of the industry’s future in the state. Roger Smith, fourth-generation citrus producer and executive of AC Foods, spoke during the recent Georgia Citrus Association meeting in Tifton. He discussed the disease that devastated citrus production in Florida and could …
How to Enhance Pre-emergent Herbicide Performance
By Ramdas Kanissery and Robert Riefer Pre-emergent herbicides, also known as residual herbicides, are highly effective in the long-term suppression of weeds in citrus tree rows. These herbicides remain in the soil and prevent susceptible weeds from germinating. In order to achieve the best weed control results, pre-emergent herbicides need to stay within approximately the top 5 inches of soil, …
HLB-Affected Trees Use Less Water
By Davie Kadyampakeni Huanglongbing (HLB) is a citrus disease that affects the growth of the fibrous roots of citrus trees. This means that HLB-affected trees may have reduced root volume, which impacts water uptake. A greenhouse study was conducted from October 2019 to July 2021 at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Research and …
$5 Million Awarded to UF/IFAS for HLB Research
The University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) has been awarded five federal grants totaling more than $5 million to control HLB. The grants are from the U.S. Department of Agriculture’s National Institute of Food and Agriculture (NIFA). HLB is caused by the bacterium Candidatus Liberibacter asiaticus (CLas). The Asian citrus psyllid can transmit CLas into a …