Silicon Recommendations for Citrus

Josh McGillCold Hardy, Nutrition

A University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researcher recently wrote an article about silicon that included recommendations for its use. The article by Muhmmad Shahid, assistant professor of horticulture, appeared in the UF/IFAS Cold Hardy Citrus Connection newsletter. Silicon’s benefits may include improved yield, a strengthened root system and tolerance to abiotic stress, including cold. Excerpts …

Grower-Friendly HLB Research Summaries

Josh McGillHLB Management, Research

The U.S. Department of Agriculture National Institute of Food and Agriculture (USDA NIFA) provides research directed at overcoming the devastating HLB disease and protecting the nation’s citrus industry. Since 2014, NIFA has funded approximately $200 million for HLB research projects.  Many HLB-related NIFA project one-page summaries are now easily accessible and written in a grower-friendly language and format on the …

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Turkey Citrus Forecasts See Some Declines

Josh McGillCrop Forecast, International

Lemon and grapefruit crops will be smaller than the previous year, the U.S. Department of Agriculture Foreign Agricultural Service (USDA FAS) stated in a recent report on Turkey citrus. The country’s orange juice (OJ) production is forecast to stay the same. LEMONSTurkey’s 2022–23 fresh lemon production forecast is 1.32 million metric tons (MMT), 11% lower than the previous season. The …

Accelerating Citrus Breeding Efforts

Josh McGillBreeding

By John M. Chater Professors Jude Grosser and Fred Gmitter have been breeding improved citrus varieties at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Research and Education Center (CREC) for decades. Over time, they have released several of their advanced selections. Many of these selections are sweet oranges. There is a subset of these creations …

European Mandarin Production Declines

Josh McGillCrop Forecast, International, Mandarins

European Union (EU) mandarin production in 2022–23 is forecast at 3 million metric tons (MMT), down almost 4% from the prior season, the U.S. Department of Agriculture Foreign Agricultural Service (USDA FAS) recently reported. The shortage in EU mandarin production this year is mainly the result of anticipated decreases in Spain, EU’s major mandarin producer. Spain and Italy are respectively …

Groups Challenge Florida Immigration Law

Josh McGillCitrus

The American Immigration Council (AIC) and other organizations announced they will file a federal lawsuit challenging Florida’s Senate Bill 1718, an immigration law that went into effect July 1. Joining AIC in the suit are The Southern Poverty Law Center, American Civil Liberties Union (ACLU), ACLU of Florida and Americans for Immigrant Justice. The Florida Senate summarizes the bill as “Prohibiting …

Rossi Selected for Leadership Training

Josh McGillEducation

Lorenzo Rossi, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) assistant professor, has been selected to train in the American Society for Horticultural Science’s Leadership Academy. Rossi leads a team of 15 associates who perform research to support high-value crops, including citrus, at the UF/IFAS Indian River Research and Education Center in Fort Pierce. He was selected for …

Capitalize on Cooperative Research

Josh McGillResearch, Tip of the Week

By Larry Duncan The growers advising the Citrus Research and Development Foundation understand very well the importance of cooperative research projects between growers and scientists. Several years ago, they earmarked a portion of research funding, not for carefully managed laboratory experiments or small plot trials at state, federal or private research centers, but rather for grower-run trials testing potential HLB …

Stress Factors and Hurricane-Damaged Trees

Josh McGillhurricane

By Syed Bilal Hussain, Rachel Gearhart, G. Zeng Michalzcyk and Christopher Vincent Hurricane Ian in 2022 caused significant damage to Florida citrus groves. Even groves that experienced only Category 1 winds have begun to decline as the weather has warmed. Signs of canopy decline include branch dieback and leaf drop. Branches with new growth are also experiencing leaf drop. These …

World Citrus Organisation Gains First Mexican Member

Josh McGillInternational

Citrojugo in June became the first Mexican member of the World Citrus Organisation (WCO). Citrojugo, based in Tecomán, is a producer, processor and marketer of acid citrus-based juices, essential oils and dried peels. WCO is a global platform for dialogue and action that brings together citrus-producing countries. The group includes more than 40 other associations, companies and members that work …

USDA to Buy Fresh Grapefruit for Food Programs

Josh McGillGrapefruit

The U.S. Department of Agriculture (USDA) recently announced plans to purchase fresh grapefruit for distribution to various food nutrition assistance programs. The purpose is to encourage the continued domestic consumption of these products by diverting them from the normal channels of trade and commerce. USDA said ample availability of fresh grapefruit is projected to increase due to slower movement in …

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Grapefruit Rootstock/Scion Research Update

Josh McGillGrapefruit, Indian River, Research

University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers Mark Ritenour and Flavia Zambon recently provided an update on a large field trial. The project is called Evaluation of Potential HLB Tolerant Grapefruit Rootstock/Scion Combinations in the Indian River District of Florida. A summary of their update follows:  The project started as a collaborative effort between the UF/IFAS …

Greasy-Green Research Update

Josh McGillDiseases, Research

University of Florida Institute of Food and Agricultural Sciences researchers Megan Dewdney, Mark Ritenour, Liliana Cano, Eva Mulandesa and Monty Myers recently provided an update of their greasy-green disorder research. Excerpts follow from the Indian River Citrus League’s River Ramblings publication: “Greasy green” is a term applied to fruit that develop what appears to be greasy spot rind blotch symptoms …

Less Citrus Production in Morocco

Josh McGillCrop Forecast, International

Production of all citrus varieties in Morocco will decline in 2022–23, the U.S. Department of Agriculture Foreign Agricultural Service (USDA FAS) confirmed in a recent report. The report includes an update on the area planted for each variety and the expected volume of exports. Morocco does not import fresh citrus. TANGERINES/MANDARINS Fresh tangerine/mandarin production is projected at 927,000 metric tons …

European Orange Production to Decline

Josh McGillCrop Forecast, International

European Union (EU) orange production is projected at nearly 5.8 million metric tons (MMT) for 2022–23, almost a 13% reduction from the previous season, according to a U.S. Department of Agriculture Foreign Agricultural Service (USDA FAS) report. Reductions are expected mainly in Spain and slightly in Italy and Portugal. SPAINOrange production in Spain is projected to decline by 22.8%, amounting …

European Union Citrus Report on Production, War Impact

Josh McGillCrop Forecast, International

A new report on European Union (EU) citrus by the U.S. Department of Agriculture Foreign Agricultural Service (USDA FAS) includes a broad overview of the continent’s industry. Production expectations, the impact of Russia’s invasion of Ukraine, acreage and trade are addressed in the report. PRODUCTION REDUCTIONTotal European Union (EU) citrus production in 2022–23 is projected to total 10.4 million metric …

Identifying HLB Therapeutics With CTV-Based Vectors

Josh McGillHLB Management, Research

By Choaa A. El Mohtar Projected citrus production in Florida for the 2022–23 season is less than 20 million boxes. This is more than a 90% decrease compared to the 2003–04 season, which was around 292 million boxes. The main reason for the decrease is huanglongbing (HLB) disease. The University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) citrus …

CRAFT Update Provided at Citrus Industry Conference

Josh McGillCRAFT, HLB Management

During the Florida Citrus Industry Annual Conference earlier this month, Tamara Wood, executive director of the Citrus Research and Field Trial (CRAFT) Foundation, gave an update on a new phase of the CRAFT program. Started in 2019, CRAFT was initially focused on new plantings. The program helps growers cover the cost of new plantings if they agree to an experimental …

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CRDF Research Priorities Include Trunk-Injection Therapy

Josh McGillCRDF, Research

The Citrus Research and Development Foundation (CRDF) held its June board of directors meeting in conjunction with Florida Citrus Mutual’s Florida Citrus Industry Annual Conference in Bonita Springs. The June gathering is when the CRDF board passes its budget for the next year. The board funded a project by Zhanao Deng, professor of environmental horticulture with the University of Florida …