Steam Aids Herbicide in Goat Weed Control

Tacy Calliesweeds

Using steam and a low dose of herbicide helped control goat weed in citrus better than a higher dose of herbicide, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers found. Goat weed, which poses major challenges for citrus, is found throughout the Southeast — from Texas, east to South Carolina and south to Florida. “It produces many …

Canada’s Plastic Proposal Concerns Florida Growers

Tacy CalliesInternational, Regulation

The Florida produce industry, including citrus, recently voiced concerns regarding Canada’s proposal to reduce the use of fresh produce plastic packaging. Organizations represented in a Florida letter to the director of Canada’s Plastics Regulatory Affairs Division include Florida Citrus Packers, Florida Citrus Mutual, Florida Fruit & Vegetable Association (FFVA), Florida Blueberry Growers Association, Florida Strawberry Growers Association and Florida Farm …

texas

Alabama Designated as Commercial Citrus Producer

Tacy CalliesDiseases, Regulation

The U.S. Department of Agriculture Animal and Plant Health Inspection Service (USDA APHIS) announced it has designated Alabama as a commercial citrus-producing area. This action provides Alabama with protections that are afforded under the citrus canker regulations applying to commercial citrus-producing states. USDA APHIS regulates the interstate movement of certain plants, plant parts and other articles from areas of the …

New AgTech Expo Looks at Rapidly Moving Sector

Tacy CalliesEvents, Technology

The Gulf Citrus Growers Association and the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Southwest Florida Research and Education Center presented the Florida AgTech and AI Expo in Punta Gorda on Dec. 14. The event showcased emerging trends in technology and how some farms are putting ag technology to work in the real world. In addition to …

New Research on Neonicotinoids for Psyllids

Tacy CalliesBrazil, Psyllids, Research

Continuing Brazilian research into the application of neonicotinoids via drench for control of HLB-spreading psyllids shows higher efficacy than earlier results indicated. In September, Fundecitrus released preliminary results on the application of neonicotinoids via drench. At that time, tests carried out on a property in Casa Branca, São Paulo, showed that the efficiency of the molecules for this type of …

Chilean Citrus Exports Soar

Tacy CalliesExport, International

Chilean citrus exports in the 2023 season increased 48% over the previous season, and 16% over the average of the last three seasons, the Chilean Citrus Committee reported. A total of 395,889 tons have been exported, of which 15.5% were clementines, 43.7% mandarins, 23.7% oranges and 17.1% lemons. U.S. IS TOP MARKETThe United States was the main destination market, receiving …

Potassium and Silicon Improve Cold Hardiness

Tacy CalliesCold Hardy, Tip of the Week

By Muhammad Shahid Winter freeze is the main threat to the emerging citrus industry in North Florida, South Georgia and Southeast Alabama. Growers use microsprinkler irrigation as a freeze-protection strategy to protect the graft union of young trees, but it is not very effective in protecting aboveground plant parts in established trees. PLANT PROTECTIONUse of stress-mitigating substances could be an …

CRDF Puts a Bow on a Busy Year

Tacy CalliesCRDF

The Citrus Research and Development Foundation (CRDF) held its final board of directors meeting of the year on Dec. 12. According to Rick Dantzler, CRDF chief operating officer, it was a productive meeting. “We funded projects on plant breeding and evaluation,” Dantzler said. “We also approved research to look for ways to maximize the use of oxytetracycline (OTC) as a …

Research Team Aims for HLB Resistance/Tolerance

Tacy CalliesHLB Management, Research

A team led by Clemson University is receiving a second multimillion-dollar federal grant to continue research into HLB. Feng Luo, the Marvin J. Pinson, Jr. ’46 Distinguished Professor in the School of Computing, is the principal investigator. The project is funded with $4.1 million from the U.S. Department of Agriculture’s National Institute of Food and Agriculture (USDA NIFA). Co-principal investigators …

Court Disallows Use of Streptomycin on Citrus

Tacy CalliesLegal, Pesticides

The U.S. Ninth Circuit Court of Appeals on Dec. 13 reversed the U.S. Environmental Protection Agency’s (EPA) approval of the antibiotic streptomycin as a pesticide on citrus crops. See the ruling here. The court determined the EPA’s 2021 decision to allow spraying of streptomycin on citrus crops across the country to be unlawful under the Federal Insecticide, Fungicide, and Rodenticide Act …

Florida Citrus: The Road Back

Tacy CalliesEconomics, Florida

By Tom Spreen The Florida citrus industry has experienced a difficult stretch of years since the record crop year of 2003–04, when over 240 million 90-pound boxes of oranges were produced. INDUSTRY DECLINEIn 2004, multiple hurricanes crisscrossed the Florida peninsula. They were the first hurricanes to hit the citrus-producing area of Florida since Hurricane Dora in 1964. The hurricanes themselves …

fruit fly

California Fruit Fly Quarantines Continue to Expand

Tacy CalliesCalifornia Corner, Pests, Regulation

Federal and state officials have expanded Mediterranean fruit fly (Ceratitis capitata; Medfly), Zeugodacus tau fruit fly and Queensland fruit fly (Bactrocera tryoni; QFF) quarantines in California. The actions were taken by the U.S. Department of Agriculture’s Animal and Plant Health Inspection Service (USDA APHIS) and the California Department of Food and Agriculture (CDFA). The Medfly and tau fruit fly quarantines …

pesticide resistance

Preventing Pesticide Resistance

Daniel CooperPesticides, Pests

By Lourdes Pérez Cordero Insects in general are often thought of as pests. Although some organisms of the class Insecta can become harmful to important agricultural crops, not all insects should inherently be considered pests. A pest can be any organism that competes, injures, or spreads diseases to humans, domestic animals and desired plants. Historically, humans have utilized chemical mixtures …

California Leads U.S. Grapefruit Production

Tacy CalliesGrapefruit, Production

For the third season in a row, California led the nation in grapefruit production again in 2022–23. Over the past decade, the title of top grapefruit-producing state has alternated between Florida, California and Texas. But the Florida citrus industry continues to decline, and Texas grapefruit producers experienced a major setback in February 2021 with Winter Storm Uri. California produced 160,000 …

frost season

Frost Season Arrives in California

Daniel CooperCalifornia Corner, Weather

California Citrus Mutual (CCM) recently reported that the 2023 frost season is underway for the state’s San Joaquin Valley citrus growers. “That means growers will be closely monitoring weather forecasts to prepare for any cold spells that may sweep through the valley in the coming months,” the citrus growers’ trade association stated.  Although long periods of below-freezing temperatures are of …

program

Ag Groups Want Changes to Emergency Relief Program

Daniel Cooperfinancial, hurricane, Legislative

The Florida Fruit & Vegetable Association (FFVA) was among more than 140 U.S. agriculture organizations that recently urged the U.S. Department of Agriculture (USDA) to revise the Emergency Relief Program (ERP) for 2022. In 2022, President Biden signed into law appropriations legislation providing $3.74 billion in ERP assistance to agricultural producers impacted by numerous natural disasters in 2022. FFVA and …

field

Rootstocks and More Showcased at Field Day

Daniel CooperEvents, Rootstocks, Varieties

In early December, the U.S. Department of Agriculture-Agricultural Research Service (USDA-ARS) hosted its annual A.H. Whitmore Foundation Farm field tour and variety display in Groveland, Florida. The event was well attended and showcased the USDA-ARS citrus scion and rootstock breeding program. Attendees loaded up for a hayride and guided tour through the grove. One stop showcased the cooperative work the …

speech contest

Julia C. Black Memorial Speech Contest and Scholarship Announced

Daniel CooperEducation, Scholarship

Florida Citrus Mutual has announced its inaugural Julia C. Black Memorial Speech Contest and Scholarship. Its intent is to encourage students to learn more about Florida’s agriculture industry, specifically Florida citrus, and to support high school students with scholarship funds. The application deadline for students in grades 9–12 is Dec. 30, 2023. The speech contest will include two phases: district …

Florida citrus

IPCs on More Than a Million Florida Citrus Trees

Daniel CooperIPCs

As recently as five years ago, Florida citrus growers did not routinely put individual protective covers (IPCs) on their trees as part of their grove management. Now, the mesh IPCs cover at least 1 million trees on about 17,000 acres, mostly thanks to experimentation by University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researcher Fernando Alferez. IPCs keep …

monitoring

Improved Monitoring of Citrus Maturity

Daniel CooperInternational, Research

A new approach developed primarily by Chinese researchers allows for more precise monitoring of citrus fruit development and optimal harvest timing. A key to improving citrus fruit quality and post-harvest processes is understanding citrus color change, a critical indicator of fruit maturity that is traditionally gauged by human judgment. Recent machine vision and neural network advancements offer more objective and …