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Below you'll see everything we could locate for your search of “rootstock”
By Ute Albrecht Tolerance to a disease is generally defined as the ability to be productive in the presence of disease-causing organisms. This is contrary to resistance, which is defined as the ability to completely evade a pathogen due to specific resistance mechanisms. The question as to what defines an HLB-“tolerant” rootstock was posed in an article by Bill Castle, …
By Jude W. Grosser and Frederick G. Gmitter It’s no secret that citrus greening disease, or HLB, continues to take a heavy toll on the beloved Florida citrus industry. It has been estimated that the industry will need to replant over 3 million trees per year for the next 10 years just to get back to normal. So the million-dollar …
By Harold Browning Column sponsored by the Citrus Research and Development Foundation Plant breeding programs have been a mainstay of citrus production worldwide. They have served as a basis for gradual improvement in fruit quality, adaptability to varying growing environments, and most importantly, to disease management. For that reason, new germplasm has been a front line of pursuit in the …
By Bill Castle (Editor’s note: Click on the graphs throughout the article to enlarge them.) By classic biological definition, a particular citrus rootstock-scion combination when infected with Candidatus Liberibacter asiaticus (CLas) would be considered tolerant if infected trees had no more than slight reductions in performance, sometimes accompanied by a reduced level of the pathogen. That definition implies that the …
Florida Citrus Rootstock Selection Guide: New Custom Query Option The third edition of the Florida Citrus Rootstock Selection Guide was recently released online at flrootstockselectionguide.org and has now been expanded to include an expert system to aid growers in rootstock selection. The expert system was developed as a collaborative effort of Steve Rogers, Bill Castle, Steve Futch and Andrew Persaud. …
The Citrus Research and Field Trial (CRAFT) Foundation recently provided information about a new funding opportunity for growers participating in the Emerging Varieties (EV) Program. CRAFT received additional funding from the Florida Department of Citrus, which will be used to reimburse growers for some of their costs associated with the royalties for five of the varieties included in the EV …
The Citrus Research and Field Trial (CRAFT) Foundation has been a lifeline to Florida’s citrus industry in the battle against HLB. CRAFT’s programs provide incentives for new plantings and existing tree therapies in exchange for growers submitting data for those projects. In 2025, CRAFT received more than $100 million dollars from the state legislature to fund more cycles of the …
In January, the Citrus Research and Development Foundation (CRDF) board of directors took up several projects aimed at plant transformation to improve HLB disease resistance in plants. MANJUL DUTT The board voted to fund work by Manjul Dutt, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) assistant professor of horticultural sciences, to graft the most promising non-genetically modified …
The Florida Citrus Show is just a month away, scheduled for March 12. The event will be held at the University of Florida Institute of Food and Agricultural Sciences Indian River Research and Education Center and the U.S. Department of Agriculture-Agricultural Research Service U.S. Horticultural Research Laboratory in Fort Pierce. The seminar program offers a wealth of educational opportunities, and …
Fruit harvested at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Millennium Block from 2022 to 2026 will help determine the effectiveness of potential solutions to HLB. This season’s fruit will be harvested through early February, and research results are expected later this year. The Millennium Block was planted in 2019 at the UF/IFAS Indian River Research …
The University of California, Riverside (UCR), which developed the Tango mandarin in 2006, recently reflected on the variety’s success and noted that its patent has expired. Tango has generated more than $70 million in cumulative economic value for UCR. The virtually seedless, easy-peeling fruit has been marketed under brand names like Cuties and Halos. Now that Tango’s plant patent has …
The Florida Citrus Show has an excellent day of education and networking planned for citrus and specialty crop growers. One of the most timely talks will cover post-freeze production considerations for citrus growers. Learn what Extension resources are available to growers to assist in their recovery efforts. Citrus Research and Field Trial (CRAFT) programs have been a lifeline to growers …
Last September, Jason Griffin hosted a field day in his citrus grove near Lake Alfred in partnership with the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS). The event was well attended, and some growers requested a second field day when the crop was closer to harvest. Griffin and UF/IFAS hosted a second event in late January as …
The February issue of Specialty Crop Grower magazine features Part 2 of results from the Citrus State of the Industry Survey. Florida growers reveal details on their planting intentions. Find out what varieties and rootstocks they’re selecting, what percent are growing citrus under protective screen, and other insights. In the digital edition of the magazine, readers can find bonus coverage …
Despite declaring there will be no silver bullet for HLB, Ozgur Batuman in a Jan. 21 virtual seminar said growers using integrated pest management (IPM) tools “can stay productive.” However, the University of Florida Institute of Food and Agricultural Sciences associate professor also warned that producing citrus juice in Florida “will not be easy or cheap.” Oranges are by far …
The Citrus Research and Field Trial (CRAFT) Foundation has been a lifeline to Florida’s citrus industry in the battle against HLB. CRAFT’s programs provide incentives for new plantings and existing tree therapies in exchange for growers submitting data for those projects. CRAFT then analyzes that data for trends and potential solutions. Another key mission of CRAFT is sharing the results …
By Muhammad A. Shahid, KeAndre Leaks and Davie M. Kadyampakeni Right after a freeze, you may notice new growth turning black and leaves hardening, yellowing or looking water-soaked. About a week after a severe freeze, leaves may start to curl and turn brown. Leaves and fruits may begin to drop. Do not attempt any recovery treatments immediately after a freeze. …
By Fernando Alferez, Divya Aryal and Saoussen Ben Abdallah University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) research in the last three years has found that the combined use of individual protective covers (IPCs) and brassinosteroids (BRs) enhances protection of citrus trees against HLB and other diseases that limit citrus production in Florida. The research has been conducted …
The Florida Citrus Show is scheduled for Thursday, March 12. The event will be held at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Indian River Research and Education Center and the U.S. Department of Agriculture (USDA) Agricultural Research Service U.S. Horticultural Research Laboratory in Fort Pierce. The Florida Citrus Show combines educational seminars for both citrus …
Larry Duncan, professor of nematology with the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS), recently presented his research regarding the management of sting nematodes and diaprepes root weevils. The presentation was part of an ongoing series of Zoom meetings organized by Mongi Zekri, UF//IFAS citrus Extension agent. STING NEMATODE Sting nematode is an important pest, especially in …
