HLB

HLB Quarantine Expansions Impact California Commercial Citrus

Daniel CooperCalifornia Corner, Diseases, Regulation

Agriculture officials have expanded the areas quarantined for citrus greening disease (known as huanglongbing or HLB) in California. The quarantined area in the Corona area of Riverside County was expanded by 37 square miles. The San Juan Capistrano quarantined area of Orange County was expanded by 18 square miles. The actions were taken by the U.S. Department of Agriculture Animal …

triazine

Support for Citrus Access to Triazine Herbicides

Daniel Cooperweeds

The Florida Fruit & Vegetable Association (FFVA) recently filed comments with federal agencies supporting continued access to the triazine herbicides simazine and atrazine for citrus and other specialty crops. The comments were submitted to the U.S. Fish and Wildlife Service (FWS) and Environmental Protection Agency regarding FWS’ draft Biological Opinion (BiOp) for Atrazine and Simazine Herbicides. FFVA submitted the comments …

purchase

USDA to Purchase $30 Million of Fresh Citrus

Daniel CooperFresh

The U.S. Department of Agriculture (USDA) on Nov. 24 announced its intent to purchase up to $30 million in fresh citrus from American farmers. Under Section 32 of the Agriculture Act of 1935, the USDA has the authority to purchase commodities from American farmers and producers and distribute the products to food banks and nutrition assistance programs across the country.  “These …

NVDMC

CITRUS NURSERY SOURCE: NVDMC’s Research Initiatives for 2025–26

Daniel CooperCitrus Nursery Source, Research

By Peter Chaires Last month’s Citrus Nursery Source article promised additional details on New Varieties Development & Management Corp.’s (NVDMC) 2025–26 sponsored projects. While there is only space for general summaries, it is important to highlight the areas of focus for each research team, and the emphasis on short-term benefits while continuing to build a foundation for the future. NVDMC …

NuCitrus

NuCitrus Shows Strong HLB Tolerance

Daniel CooperHLB Management, Varieties

University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers are putting genes from a non-citrus plant into Hamlin oranges to develop citrus plants that fight huanglongbing (HLB), also known as citrus greening disease. The newly developed plant is called NuCitrus. It’s based on a protein called Arabidopsis NPR1 (AtNPR1). The new citrus shows strong tolerance to HLB, but not …

Florida citrus

Florida Citrus Budget Adopted; Issues Updated

Daniel CooperFlorida Department of Citrus

The Florida Citrus Commission (FCC) on Oct. 22 adopted a revised $23.4 million 2025–26 budget for the Florida Department of Citrus (FDOC). The FDOC budget is funded in part by a tax on each box of fruit growers produce. That tax will remain unchanged from last year, as follows: The FCC also received updates on several issues affecting the Florida …

standards

Florida Processed Citrus Standards Relaxed

Daniel CooperFlorida Department of Citrus, Processing

The Florida Citrus Commission (FCC) on Oct. 22 temporarily eased maturity standards for processed oranges and processed grapefruit. The Florida Citrus Processors Association and Florida Citrus Mutual requested the changes, which were enacted by emergency rulemaking. The Florida Department of Citrus (FDOC), which the FCC governs, reported the maturity standard changes and the dates they are in effect. ORANGES For …

Callaham

Dundee Citrus Growers Association’s Callaham Honored

Daniel CooperAwards

Steven Callaham, executive vice president and chief executive officer of Florida’s Dundee Citrus Growers Association (Dundee CGA) for the last 22 years, was recently honored by The Packer. He was recognized as one of the 25 fresh produce industry innovators and agents of change. Callaham graduated from the University of Florida College of Agriculture and joined Dundee in 1999. He …

irrigation management

Irrigation Management for Improved Citrus Production

Daniel CooperIrrigation, Tip of the Week

By Davie M. Kadyampakeni and Alisheikh A. Atta The conventional four Rs for nutrient management are right source, right place, right rate and right time. This approach allows growers to synchronize nutrient supply with crop demand, enhance tree health and fruit yield, and abate economic costs and environmental losses.  In contemporary farming systems in Florida citrus production, considering a fifth R …

benefits

Silicon Benefits Citrus

Daniel CooperCitrus Expo, Nutrition

A University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researcher recently highlighted a number of benefits from using silicon as a nutrient for citrus. Muhammad Shahid, assistant professor at the North Florida Research and Education Center, presented silicon research findings at the Citrus & Specialty Crop Expo in August.   According to Shahid, silicon is categorized as a plant …

planting method

Video Shows Citrus Planting Method Has Many Benefits

Daniel Cooperplanting, Texas

Texas A&M University citrus scientists who developed a successful planting method to combat diaprepes root weevil found that the method also offers numerous other benefits. In 2013, researchers Mamoudou Setamou and Olufemi Alabi were looking for an effective non-chemical method to physically block the circular foliage-to-underground lifecycle of diaprepes. The pest was attacking citrus roots and killing trees. Their solution …

diagnostic

Plant Diagnostic Facilities for Georgia Citrus Growers

Daniel CooperDiseases, Georgia

The University of Georgia (UGA) has disease labs and clinics to help citrus producers determine what diseases are impacting their trees. Jonathan Oliver, UGA assistant professor and small fruits pathologist, highlights the diagnostic facilities that growers can take advantage of. “We have a lab in Tifton, the Plant Disease Clinic, that can accept samples from commercial citrus,” Oliver said. “We …

difficult

Brazil to Implement National Greening Prevention and Control Program

Daniel CooperBrazil, HLB Management

Brazilian agriculture officials recently visited Fundecitrus to discuss the first steps in implementing the National Greening Prevention and Control Program, which will be implemented by the states. The officials were with the Ministry of Agriculture, Livestock and Food Supply (MAPA) and the Agricultural Defense Coordination Office of the State of São Paulo. The ordinance establishing the National Greening Prevention and …

replanting

Replanting Is the Next Chapter for Florida Citrus

Daniel CooperFlorida Department of Citrus

By Marisa L. Zansler Two decades of decline has resulted in a loss of nearly 2 out of every 3 acres since 2004. That is a sobering statistic, and it captures the harsh reality of Florida’s iconic citrus industry. The symbol of the state’s agricultural strength has endured a prolonged period of decline driven by the impacts from the spread …

future

A Bright Future and New Normal for Citrus

Daniel CooperCitrus Expo

Citrus has a brighter future in Florida and surrounding areas, according to one industry expert. Hopefully, there will be enough farmers left standing to profit from it. Rick Dantzler, Citrus Research and Development Foundation chief operating officer, was a featured speaker at this year’s Citrus & Specialty Crop Expo. He spoke about the industry’s future as it continues to navigate …

Canopy Management Needed for Cold-Hardy Citrus

Tacy CalliesCold Hardy, Pruning

Pruning may help cold-hardy producers salvage their satsuma crop from one year to the next and not endure extreme alternate bearing cycles. “Pruning in the heavy year may help alleviate that alternate bearing pattern. But we still have to do the research to support that,” said Mary Sutton, University of Georgia (UGA) assistant professor and citrus Extension specialist. While pruning …

OTC

Citrus Industry Leader Has High Hopes for OTC

Daniel CooperCitrus Expo, HLB Management

Rick Dantzler, Citrus Research and Development Foundation chief operating officer, provided hope for citrus growers during the recent Citrus & Specialty Crop Expo. He believes citrus greening disease could soon be a thing of the past. But to get growers to that “tree of the future,” they need short-term solutions to overcome the devastating disease. Dantzler continues to tout trunk …

solutions

New, Faster Solutions Needed for Citrus Survival

Daniel CooperBreeding, Citrus Expo, HLB Management

University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers have made significant progress in finding ways to manage citrus greening disease. But solutions needs to be expedited for the sake of the citrus industry’s future in Florida. Scott Angle, UF/IFAS senior vice president for agriculture and natural resources, emphasized that point during last week’s Citrus & Specialty Crop …

delegation

Fundecitrus Hosts California Delegation

Daniel CooperBrazil, California Corner, International

Brazil’s Fundecitrus recently hosted a delegation of approximately 20 agricultural leaders from California. Karen Ross, secretary of the California Department of Food and Agriculture, led the delegation. The group visited Brazil to learn more about Fundecitrus’ research, education, training and sustainability initiatives focused on citrus farming. The Californians participated in technical discussions with researchers and took a tour of Fundecitrus’ …

honeymoon phase

Honeymoon Phase for Georgia Citrus Production

Daniel CooperDiseases, Georgia

Georgia citrus growers are still in the honeymoon phase of production with regards to disease, said Jonathan Oliver, University of Georgia (UGA) assistant professor and small fruits pathologist. While established groves in Florida have had to deal with disease buildup for decades, disease has yet to be problematic for South Georgia citrus production. But that could be changing. “With respect …