In the February episode of the All In For Citrus podcast, Michael Rogers provides an update on activities at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Research and Education Center in Lake Alfred. He said the beginning of the year is the time when current and future projects are evaluated. “The months of February and …
Foliar Disease Watch in Florida
By Megan Dewdney Spring is the time to start thinking about foliar disease management in Florida. Depending on the type of citrus being produced and the market destination, different diseases will be important. POSTBLOOM FRUIT DROP The disease that affects all citrus, particularly oranges, is postbloom fruit drop (PFD). This disease is highly dependent on the weather during bloom. Currently, …
All Hands on Deck for Florida Citrus
By J. Scott Angle, jangle@ufl.edu, @IFAS_VP My 89-year-old father-in-law has planted new trees in his California grove in the last two years. Bruce Kelsey believes in the future of citrus, and that reinforces my belief in the future of citrus. I’m not saying everything Bruce does makes sense. I wish he didn’t still go up on ladders and pick fruit, …
Citrus Nutrition Day Explores Benefits of Silicon
The University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) hosted its annual Citrus Nutrition Day in January at the Citrus Research and Education Center in Lake Alfred. The event was well attended and covered various fertilizer and nutrition topics. Muhammad Adnan Shahid, UF/IFAS assistant professor of horticulture, presented his ongoing research on the use of silicon as a …
When to Apply Brassinosteroids to Improve Valencia Fruit Quality
By Fernando Alferez and Divya Aryal Like the work being done with Hamlin sweet orange, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers are studying the effect of brassinosteroids (BRs) on the internal maturation of Valencia sweet orange fruits. The conditions of the treatments are the same as in Hamlin: A treatment of 186 milliliters of BR …
Crop Transformation Center in Full Swing
By J. Scott Angle, jangle@ufl.edu, @IFAS_VP About 18 months ago, Matt Joyner, Kyle Story, Morgan McKenna Porter, Emery Smith and other Florida citrus leaders visited me in Gainesville. Together, we shaped an idea to accelerate our search for solutions to HLB. The idea is already reality. The University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Crop Transformation Center …
Seeking Better Degreening Methods for Fresh Citrus
Two University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) scientists reported on research into more effective and environmentally friendly degreening methods for fresh citrus. They are Muhammad Shahid and Muhammad Nadeem, assistant professor of horticulture and postdoc scholar, respectively, at the UF/IFAS North Florida Research and Education Center (NFREC). Edited excerpts follow: Some varieties of citrus fruit, even …
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 …
Strategies for Managing Herbicide Tolerance
By Ramdas Kanissery Tackling herbicide tolerance in weeds is a critical aspect of effective weed control in citrus groves. It helps prevent both current and future weed management challenges. Herbicide tolerance occurs when certain weed species naturally survive and reproduce after herbicide treatment. Unlike herbicide resistance, where genetic changes allow weeds to survive and spread, herbicide tolerance doesn’t involve any …
Assessing Tools for Citrus Soil Health
Soil microbiologist Sarah Strauss on Jan. 28 discussed the benefits, challenges and unknowns of cover crops, compost and humic acid for citrus soil health. Strauss is a University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) associate professor at the Southwest Florida Research and Education Center. She pointed out that Florida’s citrus soils are problematic because they are 98% …
All In For Citrus Podcast, January 2025
Recently, the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) reported research on the development of a new type of citrus tree that can fight off the HLB-spreading Asian citrus psyllid (ACP). The genetically modified tree has only been tested in the lab and the greenhouse, but the research looks promising. The approach involves inserting a gene into …
Sneak Peek: February 2025 Citrus Industry
The citrus section in the February issue of Specialty Crop Grower is coming soon. It’s full of features for growers to dive into. First up is part two of results from the Florida Citrus State of the Industry Survey. (See part one here.) Learn out what percent of growers say they are replanting and how many are participating in the …
Rejuvenate HLB Trees With Precision Nutrient Management
By Meryam Manzoor, Jamie D. Burrow, Taylor Livingston and Tripti Vashisth Effective nutrient management and accurate nutritional analysis are critical for tree growth and maximum yield. Historically, nutrient management for healthy citrus trees involved annual leaf sampling from July to August, with subsequent fertilization plans based on a single nutrient analysis. Almost all commercial citrus groves in Florida are affected …
Key Takeaways From Citrus Nutrition Day
After being postponed this fall due to Hurricane Milton, the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) hosted its annual Citrus Nutrition Day on Jan. 22 at the Citrus Research and Education Center (CREC) in Lake Alfred. The event was well attended and featured several presentations aimed at optimizing citrus nutrition programs in the HLB era. UF/IFAS …
Joyner Honored With UF Distinguished Alumnus Award
The University of Florida honored College of Agricultural and Life Sciences (CALS) alumnus Michael Joyner (Bachelor of Science, 1986) with the Distinguished Alumnus Award. He was recognized for his outstanding contributions to the agriculture industry and his dedication to serving the university. Throughout his career, Joyner has made a lasting impact on the lives of agriculturists, shaping policies and initiatives …
Oxytetracycline Efficacy Impacted by Exposure to Field Conditions
By Lauren Fessler Mathews, Sanju Kunwar, Ana Redondo and Ozgur Batuman Based on numerous research studies conducted by scientists at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS), it has been proven that injections of oxytetracycline (OTC) can help to alleviate symptoms caused by huanglongbing (HLB) disease. This treatment is now widely practiced and crucial for preventing …
CITRUS NURSERY SOURCE: Citrus Researchers Coming Together
By Peter Chaires Florida’s citrus industry is well supported by two phenomenal research institutions: University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) and U.S. Department of Agriculture-Agricultural Research Service (USDA-ARS). UF/IFAS provides research and Extension support from its main campus in Gainesville, as well as from its research and education centers and county Extension offices across the state. …
Top Priorities: HLB Resistance and Hurricane Recovery
With 2024 in the rear view mirror, we asked leaders of key citrus organizations what their priorities are for this year. Here’s what they had to say. TREE OF THE FUTURE “For the last 2.5 years, our research strategy at the Citrus Research and Development Foundation has been to kill the bacteria that causes HLB — Candidatus Liberibacter asiaticus (CLas) …
Combine IPCs and Brassinosteroids to Prolong Young Tree Health
By Fernando Alferez and Saoussen Ben Abdallah The risk of citrus plantings to become infected with HLB is especially high for young trees, which flush frequently and attract more psyllids than mature trees. Individual protective covers (IPCs) are now being increasingly adopted to protect newly planted citrus trees from psyllid colonization. However, even though IPCs effectively protect young trees from …
Study Shows Impact of HLB Bacterium on Roots
A recent study sheds light on the significant effects of Candidatus Liberibacter asiaticus (CLas), the bacterium responsible for HLB, on the root systems of grafted Valencia orange trees. The findings reveal that root system reductions caused by the infection are more extensive than the corresponding aboveground declines. That finding underscores the hidden yet critical impact of the disease below the …