All indications are that the recent widespread use of individual protective covers (IPCs) on young citrus trees in Florida is beneficial, especially for excluding Asian citrus psyllids and the HLB they spread. If there is any downside, it may be that some other pests and diseases are more prevalent under IPCs. In a recent American Society for Horticultural Science webinar, …
Foliar Fungal Disease Round-up for 2022
By Megan Dewdney The 2021 foliar fungal season was an easier than average year. The La Niña weather pattern predicted last fall came to pass, and the spring was relatively dry from January to the end of May with some rain in February and April. While citrus trees in Florida were likely drought-stressed, the dry weather slowed the usual decomposition …
Sneak Peek: February 2022 Citrus Industry
In the February issue of Citrus Industry magazine, Florida growers will find out what diseases to watch for this season. Megan Dewdney’s annual foliar fungal disease round-up reports on what some of the major problems are likely to be in 2022. The University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) plant pathologist and Extension specialist provides tips on …
Agent Has Pest Management Advice
Highlands County Extension agent Lourdes Pérez Cordero recently offered scouting and management suggestions for citrus leafminers (CLM), Asian citrus psyllids (ACP) and rust mites. The suggestions were part of an article in the January issue of Citrus from the Ridge to the Valley, the Central Florida citrus Extension newsletter. CITRUS LEAFMINERS The emergence of spring and summer flush benefits CLM, …
An Update on Brazil’s Citrus Diseases
An update on citrus diseases in Brazil was part of a recent U.S. Department of Agriculture Foreign Agricultural Service (FAS) report. GREENING INCREASINGAccording to the 2021 citrus greening survey conducted by Fundecitrus, 43.4 million trees, or 22.37%, of the trees in the commercial area of the state of São Paulo and the western part of Minas Gerais are affected by …
Incorporating Newer Tools in Resets
By Lauren M. Diepenbrock Maintaining a productive citrus grove in Florida takes a lot of effort and innovation these days. So much so that growers’ needs can outpace the timeline of the researchers who support this industry. As such, growers often move forward with promising ideas or tools before researchers can provide useful recommendations toward successfully incorporating these tools. The …
Citrus Hall of Fame Names New Inductees
George F. Hamner Jr., of Vero Beach, and the late A. Tillis Edwards Jr. and Edward A. Taylor, both of Lakeland, will be inducted into the Florida Citrus Hall of Fame in 2022. The inductions will take place during a Citrus Celebration Luncheon scheduled for Oct. 14 at Florida Southern College in Lakeland. A. TILLIS EDWARDS JR. Edwards was a …
Florida Citrus Packers: Fix Grapefruit Import Action Now
Florida Citrus Packers recently called for a fix to a so-called “patch” by the U.S. Department of Agriculture (USDA) that allegedly creates unfair advantages for Mexico and other countries over domestic grapefruit producers. Citrus Industry previously reported that the agriculture commissioners for Florida and Texas wrote letters protesting the USDA action. Florida Citrus Packers Executive Vice President Peter Chaires …
PIECES OF THE PAST: A Thanksgiving Mantra
By Brenda Eubanks Burnette Several years ago, I was at the 2017 Florida Ag Hall of Fame dinner for my friend, Bernie Lester, who was being inducted that year. He recounted such a wonderful story during his speech that I asked him to send it to me so I would have it for the Citrus Archives, and I’d like to …
Stay Aware of Citrus Leprosis Symptoms
By Amit Levy Citrus leprosis is an exotic viral disease not currently present in Florida citrus, although the virus is present in non-citrus hosts. This disease was reported in citrus in Florida and Brazil in the early 1900s, where it caused great crop and tree losses, but was eliminated from Florida in the early 1960s. In recent years, the disease …
Protecting Citrus From Pests and Diseases
The federal Plant Protection and Quarantine (PPQ) program summarized its efforts to protect the U.S. citrus industry from pests and diseases in a recent report about its fiscal year (FY) 2020 activities. PPQ is part of the U.S. Department of Agriculture’s Animal and Plant Health Inspection Service. A summary of its citrus efforts follows. PPQ works with citrus growers to …
Making Sense of Biologicals: Seaweed for Citrus Stress Management
Florida provides an environment conducive to producing a variety of crops 365 days a year. It has beautiful sunshine, an ideal climate and ample rainfall for most of the year. These conditions allow Florida growers to produce some of the best citrus in the world. But Florida citrus is not immune to the harsh realities that can come with growing …
Seeking Microbes for Disease Control
The next key to winning the battle against citrus diseases such as citrus canker may be in the tiniest microbes that live inside the citrus tree. University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers hope to discover how these microbes may benefit citrus trees in their natural fight against diseases. The end result may be an environmentally …
Protecting Trees From Phytophthora Disease
By Evan G. Johnson It is time to start thinking about protecting the fall root flush that will start soon and continue through November/December. This is the largest root flush of the year that stores carbohydrate reserves for next spring. Coming out of the rainy season, phytophthora has had the chance to build up plenty of inoculum, especially in groves …
NVDMC, CRDF History and Updates
The Florida Citrus Commission (FCC) recently heard presentations about the history and current work of both the New Varieties Development and Management Corporation (NVDMC) and the Citrus Research and Development Foundation (CRDF). NVDMCRosa Walsh, Florida Department of Citrus (FDOC) director of scientific research, said from 2003 to 2005, the FCC discussed the need for a program that would develop, license …
Xanthomonas Key Finding Made
Scientists from Nanyang Technological University (NTU) in Singapore have identified a key mechanism by which the dangerous plant bacteria Xanthomonas can infect crops. The Xanthomonas bacteria, known as the “crop killer,” is a globally prevalent bacterium capable of infecting 400 different plant species. Citrus canker is caused by the bacterial pathogen Xanthomonas citri subsp. The NTU researchers identified the exact …
Hurricane Preparation and Recovery: Key Points
Multi-county citrus Extension agent Ajia Paolillo recently suggested ways to prepare for and recover from a hurricane. Hurricane season began June 1 and ends Nov. 30. Paolillo said hurricane activity is usually most prevalent from August to October. She cited an August update from the National Oceanographic and Atmospheric Administration predicting 15 to 21 tropical storms this summer, with 7 …
Citrus Exports Face Challenges
Canker protocols in the European Union (EU) and difficulties transporting fruit to Asia are among problems hampering Florida’s fresh citrus exports, Dan Richey told participants during the recent virtual Packinghouse Day. Richey, of Riverfront Packing Company, is heavily involved in international trade issues on behalf of Florida’s citrus industry. The canker protocols that the EU has imposed for accepting Florida …
Before You Spray
By Matt Smith Editor’s note: This article grants one continuing education unit (CEU) in the Core category toward the renewal of a Florida Department of Agriculture and Consumer Services restricted-use pesticide license when the accompanying test is submitted and approved. We often think about pesticide safety and best management practices when we are in the field spraying. You’re outside, you’re …
Time for Brown Rot Management
By Evan Johnson The Florida summer rainy season is in full swing, and there have been one or two root flushes by now. This is a good environment for increases in soil Phytophthora propagule counts. High counts have been seen this year, especially in Southwest Florida. While much of the focus may be on root rot, it is important to …





























