What is believed to be the most northern HLB find in Florida was made the first week of November in a backyard Satsuma tree in Tallahassee. A homeowner sent photos of the tree’s symptoms to Leon County Extension horticulture agent Mark Tancig, who collected samples that were confirmed as HLB. “I’ve told the homeowner he should remove it (the tree), …
Keeping Food Contact Surfaces Safe
By Matt Krug, Michelle Danyluk and Taylor O’Bannon Basic cleaning and sanitizing steps implemented on food contact surfaces are fundamental for reducing the risk of cross-contamination of foodborne pathogens during citrus harvest and post-harvest. While these steps may seem straightforward, several variables can influence effective implementation. A regular review of practices can ensure your operation is set up for success. …
HLB Research Funded for $11 Million
The U.S. Department of Agriculture’s (USDA) National Institute of Food and Agriculture (NIFA) announced an investment of nearly $11 million for research to combat HLB. “NIFA’s Emergency Citrus Disease Research and Extension program brings the nation’s top scientists together with citrus industry representatives to find scientifically sound solutions to combat and prevent HLB at the farm-level,” said NIFA Director Carrie …
Early Performance of Orange Rootstocks in Commercial Settings
By Ariel Singerman, Stephen H. Futch and Brandon Page This article provides estimates on the performance of different rootstocks grafted with Valencia sweet orange scions in commercial field conditions. These are the first estimates obtained from side-by-side trials that compare the performance of rootstocks developed by two breeding programs: The University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) …
All In For Citrus Podcast, November 2021
The important process that gets new citrus varieties in the hands of growers is the main topic of the November episode of the All In For Citrus podcast. Michael Rogers, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Research and Education Center (CREC) director, discusses the recent CREC open house where breeders displayed potential new varieties for …
Researchers Share Tree Health Suggestions
University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers gave a crowd of growers suggestions that can help keep citrus trees healthy. The panel discussion was part of the Nov. 16 open house and field day at the UF/IFAS Citrus Research and Education Center in Lake Alfred. HLB-affected trees need enhanced nutrition “throughout the growing season,” said horticulturist …
Lebbeck Mealybug Sanitation Strategies
Lebbeck mealybug was first found causing damage in Florida citrus in Highlands County in 2019. As of this writing, it has now been found on citrus in 14 counties in Florida. This pest likely gains some dispersal assistance from wind events, either being blown on infested plant material or as crawlers on wind currents as has been noted for scale …
Breeders Discuss Favored Citrus Varieties
Fred Gmitter and Jude Grosser discuss some relatively new varieties they like – a mandarin, some oranges and a pummelo-grapefruit hybrid. Gmitter and Grosser are University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) plant breeders at the Citrus Research and Education Center. SUGAR BELLE® MANDARIN“Looking at Sugar Belle® and its performance against citrus greening, it’s clearly one of …
Nutrition and Yield in the Face of HLB
Fertilization frequency, micronutrient management and rootstocks can all impact the yield of HLB-affected sweet oranges, Tripti Vashisth recently told a Citrus Nutrition Day audience in Lake Alfred, Florida. The educational event was held at the Citrus Research and Education Center, where Vashisth is a University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) horticulturist. FERTILIZATION FREQUENCYHLB-affected trees should be …
Be Prepared for Winter Weather
By Chris Oswalt The weather folks are predicting weak to moderate La Niña conditions this winter. Typically, having either the La Niña or El Niño conditions during the winter in Florida is a good thing. There is a historically lower probability of having severe freezing temperatures during either of these El Niño-Southern Oscillation (ENSO) conditions in Florida. What this means …
Impacts of Herbicides on Young Citrus Trees
By Ramdas Kanissery, Nirmal Timilsina and Mongi Zekri Weed control is crucial for the growth and establishment of young citrus trees. Chemical weed control with herbicides is an efficient and cost-effective method for managing weeds in newly planted groves. However, before applying herbicide products, care must be taken to avoid damaging young trees and newly planted resets. Every so often, …
Workshop Provides Black Spot Advice
Information to help growers find and control citrus black spot (CBS), as well as CBS regulatory procedures, were provided in an Oct. 26 training workshop in Arcadia. The workshop was hosted by multi-county citrus Extension agent Ajia Paolillo. University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) plant pathologist Megan Dewdney discussed the pest’s lifecycle, potential spread due to …
Research on Rootstocks: More Than HLB
Plant breeders Fred Gmitter and Jude Grosser report on their efforts to develop rootstocks that perform well in Florida from several perspectives. In addition to seeking tolerance to HLB, they are working on rootstocks that might control tree size, deal with other diseases and pests and perform in a range of soils. Gmitter and Grosser are University of Florida Institute …
Citrus Is Part of DeLuca Preserve Research
Planting of new improved citrus scion/rootstock combinations to demonstrate sustainable and profitable citriculture is one of eight new research projects slated for the 27,000-acre DeLuca Preserve in Osceola County, Florida. The rootstocks and scions will come from the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Research and Education Center citrus breeding program. The eight projects are …
Oak Leaf Extract Tested as HLB Tool
In the search for solutions to HLB, a formulation based on oak leaf extract has been developed by citrus growers Travis Murphy and Tom Thayer, the Indian River Citrus League’s October River Ramblings newsletter reported. The formulation was developed following the growers’ observations that citrus trees under oak trees were free of HLB compared to nearby field trees that had …
Open Conversation, Hands-On Exhibits and Field Tours
Citrus Research and Education Center (CREC) Director Michael Rogers previews the Nov. 16 Open House/Field Day at the CREC in Lake Alfred. The CREC is part of the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS). The program will begin at 9 a.m. “It starts off with a panel discussion, talking about strategies to improve overall health of …
Fertilization Methods: Pros and Cons
Brandon White with the University of Florida Institute of Food and Agricultural Sciences discussed the pros and cons of several types and methods of citrus fertilization at Citrus Nutrition Day on Oct. 26. The event was held at the Citrus Research and Education Center in Lake Alfred, Florida. White recently became the new commercial fruit crop agent for Florida’s Lake …
Gator Bites: Competition for Clementines
Citrus Research and Education Center (CREC) Director Michael Rogers recently praised the Gator Bites mandarin variety that is being developed by the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS). Gator Bites look like California clementines, branded as Cuties and Halos, but Rogers thinks Gator Bites is a better piece of fruit. “This makes the Cuties and Halos …
An Improved Method of Nutrient Analysis
By Yiannis Ampatzidis and Ute Albrecht Optimizing nutrition is important for tree health and productivity and can improve tolerance to stresses and diseases. Good nutrient management requires regular field monitoring to identify problems and examine crop responses. Leaves need to be collected and sent to a specialized laboratory for detailed information on macronutrients and micronutrients, which is time-consuming and costly. …
CUPS Not for All Citrus Growers
One of the unique ways of managing citrus greening disease developed by University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers is not for all producers. Citrus under protective screen (CUPS) is just too expensive for all growers to take advantage of, says Fred Gmitter, a UF/IFAS citrus breeder. “It’s an extremely expensive investment,” Gmitter says. “For that …