diseases

Phytophthora Root Rot a Concern in the Cold-Hardy Region

Tacy CalliesCold Hardy, Diseases

Phytophthora root rot’s impact on young citrus trees is concerning for groves in the cold-hardy citrus region of North Florida, South Georgia and South Alabama. Newly planted trees are more vulnerable to the disease than older, established trees, says Jonathan Oliver, University of Georgia assistant professor and small fruits pathologist. He discussed the disease’s impact during the Citrus Grower’s Summer …

Factors That Influence Juice Quality

Tacy CalliesNutrition, Orange Juice, Tip of the Week

By Tripti Vashisth, Johann Hiller and Taylor Livingston Poor fruit quality has long been a significant hurdle for sweet orange growers in the HLB era. With high fruit drop rates and challenges in harvest management, many growers find themselves picking fruit earlier than ideal, resulting in subpar Brix levels. To effectively improve the Brix of the fruit, it is essential …

craft

CRAFT Informational Meetings Draw Big Interest

Daniel CooperCRAFT, planting

With a record amount of funding from the Florida Legislature, the Citrus Research and Field Trial (CRAFT) Foundation hosted a road show in early September that included stops in Fort Pierce, Lake Placid and Lake Alfred to provide information about grower programs. All three stops were well attended by growers interested in learning about the latest cycle of funding. With …

sweet spot

CUPS: Sweet Spot, AI Tool and Spraying

Daniel CooperCUPS

Researcher Arnold Schumann recently discussed much about citrus under protective screen (CUPS), including the ‘sweet spot’ size for a structure, an artificial intelligence (AI) tool for gathering information, and pest spraying tips. The University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) professor has learned much from a CUPS facility he initiated in 2014 and from commercial CUPS growers. …

CRAFT

Applications Open for CRAFT Programs

Tacy CalliesCRAFT

Applications are being accepted for the Citrus Research and Field Trial (CRAFT) seventh program year. Applications must be submitted at the CRAFT website by Oct. 3. Here is a summary of available 2025 CRAFT programs:    TRADITIONAL NEW TREE PLANTING PROGRAMThis program evaluates grower recommended rootstock/scion combinations in real-world commercial conditions. FAST TRACK NURSERY STOCK PROGRAMThe CRAFT board has identified …

Research Renders Reasons to Replant

Tacy CalliesCitrus, planting, Research

By J. Scott Angle, jangle@ufl.edu, @IFAS_VP Growing up in Polk County, Emily Worbington saw the groves disappearing. She passed more and more rooftops as she drove around Auburndale. In nearby Eagle Lake, Joe Volpe watched trees vanish, too. In fact, he tore out trees himself in his family’s century-old grove. “It broke my heart,” he says. PERSONAL PURSUITSWorbington and Volpe’s …

$675.9 Million Disaster Assistance Block Grant for Florida Farmers

Tacy CalliesAs Seen On Instagram, financial, hurricane

U.S. Secretary of Agriculture Brooke Rollins appeared today at Cooperative Producers Inc. in Felda, Florida, to meet with agricultural leaders and growers to announce additional U.S. Department of Agriculture (USDA) assistance to help producers recover from Hurricanes Idalia, Debby, Helene and Milton. Rollins signed a block grant agreement with the Florida Department of Agriculture and Consumer Services (FDACS) to provide …

individual protective covers

Water Use Under Individual Protective Covers

Daniel CooperIPCs, Water

By Fernando Alferez and Osbaldo Vasquez During the last seven years, the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Southwest Florida Research and Education Center (SWFREC) in Immokalee has been performing comprehensive studies on the use of individual protective covers (IPCs). This tool is now adopted by most growers planting new citrus trees in Florida both in …

hlb

OTC Impacts on HLB in Trees and Psyllids

Daniel CooperEvents, HLB Management, Research

During the recent Florida Citrus Industry Annual Conference, Kirsten Pelz-Stelinski, director of the University of Florida Institute of Food and Agricultural Sciences Mid-Florida Research and Education Center, presented evaluations of trunk-injected antimicrobials for HLB management. She said the purpose of these antimicrobial treatments is a short-term or stop-gap approach to keep the current inventory of Florida citrus trees in the …

genome-edited

Two Genome-Edited Trees Are Approved

Daniel CooperHLB Management

Two non-transgenic genome-edited orange plants — a Hamlin and a Valencia that may resist HLB — have been federally approved and are ready for Florida growers. Nian Wang, University of Florida Institute of Food and Agricultural Sciences eminent scholar endowed chair in biotechnology, reported this news in a June 17 virtual presentation. The plants, which Wang termed “Eds1-edited,” have received …

CRAFT

CRAFT Continues to Push New Plantings and HLB Therapies

Daniel CooperCRAFT, Events

During the recent Florida Citrus Industry Annual Conference, Steven Hall provided an update on the Citrus Research and Field Trial (CRAFT) programs. Hall is executive director of the CRAFT Foundation. CRAFT programs have been very popular among growers to incentivize new plantings and build knowledge about HLB therapies like trunk injection, the use of individual protective covers, plant growth regulators …

Angle

Positive Changes

Daniel CooperHLB Management

By J. Scott Angle, jangle@ufl.edu, @IFAS_VP Two and a half years ago, Riley McKenna leveled with his dad. Without a tool that made a noticeable difference in the grove soon, it might be time for dad to retire and Riley to seek a new career. So why was he spending an April day with me and his cousin Morgan McKenna …

gibberellic acid

Consider Summer Gibberellic Acid Applications

Daniel CooperPGRs, Tip of the Week

By Tripti Vashisth, Maricielo Postillos and Taylor Livingston In recent years, many citrus growers in Florida have begun using gibberellic acid (GA) to enhance tree growth and productivity. Initially, the recommendation was to apply GA monthly from September to January for Valencia oranges to maintain canopy health, reduce fruit drop and improve yields. However, some growers are hesitant about applying …

Grove-First

Grove-First Expands Search for HLB-Fighting Molecules

Daniel CooperHLB Management, Research

By Randall P. Niedz and Michelle Heck Grove-First is a collaborative research initiative developed by U.S. Department of Agriculture Agricultural Research Service (USDA/ARS) scientists and partners to solve citrus greening (HLB) by evaluating potential treatments directly in the field. This direct-to-field strategy is based on the idea that only field testing can determine whether a treatment can rejuvenate HLB-infected trees …

Podcast Topics: OTC Survey Results and Snail Research

Tacy CalliesAll In For Citrus Podcast, HLB Management, Pests

Trunk injection of oxytetracycline (OTC) to treat HLB is widely regarded as one of the biggest breakthroughs in the long fight against the disease. After two seasons of treatments, where do Florida citrus growers stand when it comes to the treatment? Tara Wade answers that question in the latest episode of the All In For Citrus podcast. The University of …

disease

Dealing With Disease: Canker, Black Spot and More

Daniel CooperDiseases

As the rainy season in Florida is set to begin, we caught up with Megan Dewdney to discuss citrus canker and other disease issues. Dewdney is a plant pathologist with the University of Florida Institute of Food and Agricultural Sciences. Q: How has the prevalence of citrus canker been in Florida in the past year or so? A: Dewdney: Citrus …

Take the Sting Out of Fire Ants

Morgan ColeSponsored Content

Effective fire ant control calls for long-term, proactive treatment. It isn’t enough to fight the fire ants on the surface. Fire ant tunnels can extend deep underground, up to 25 feet away from visible mounds. The fire ants you can see are only a fraction of the problem – and are easily replaceable. Central Life Sciences has the product solutions …

alternate bearing

The Causes of Alternate Bearing

Daniel CooperCold Hardy, Georgia, Production

Mary Sutton, University of Georgia (UGA) assistant professor and citrus Extension specialist, recently wrote about the causes of alternate bearing in Georgia groves. Alternate bearing is a common problem in many mandarin varieties.  A slightly edited version of Sutton’s report follows. CARBOHYDRATES During photosynthesis, leaves produce sugars that are either exported and utilized for growth or stored as starch in …

Valencia orange

California Valencia Orange Forecast Issued

Daniel CooperCalifornia Corner, Crop Forecast

The California Department of Food and Agriculture (CDFA), cooperating with the U.S. Department of Agriculture National Agricultural Statistics Service, has forecast California’s 2024–25 Valencia orange production at 15 million cartons. California’s final utilized production the prior season was 18.6 million cartons. Cartons have a standard equivalent weight of 40 pounds.  CDFA reported there are 25,000 bearing Valencia acres in 2024–25, …

weeds

The Harm Weeds Do

Daniel Cooperweeds

Before HLB, canker and diaprepes root weevils became major problems for Florida citrus growers, weeds were among the constant and major annoyances in groves. Even with the pests and diseases growers have faced over the past five decades, the need for weed control may be as important, and costly, as ever. A University of Florida Institute of Food and Agricultural …