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Below you'll see everything we could locate for your search of “rootstocks”
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 …
Not far from the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Research and Education Center (CREC) in Lake Alfred, Jason Griffin owns and operates a commercial citrus grove. While commercial in nature, the grove also has become a working experiment for the CREC citrus breeders. Griffin has worked closely with UF/IFAS citrus breeder Jude Grosser to …
By Kim D. Bowman, Ute Albrecht and Caroline Tardivo Profitability of citrus in Florida has been severely reduced by the impact of huanglongbing disease (HLB). Previous studies have demonstrated that rootstock selection and injection of established trees with oxytetracycline hydrochloride (OTC) can both significantly improve the health, cropping and fruit quality of trees affected by HLB. However, neither a superior …
Varieties and rootstocks are the topics of the September episode of the All In For Citrus podcast. Earlier this month, a field day was held in Jason Griffin’s grove near Lake Alfred, Florida. He is collaborating with the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) to evaluate several rootstock/scion combinations developed by UF/IFAS citrus breeders. Griffin has …
Researcher Manjul Dutt told a Citrus & Specialty Crop Expo audience in August why it can take up to 14 years to get a genetically modified citrus tree from discovery to commercial release. He also discussed the transgenic citrus progress at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS), where he is an assistant professor at the …
There has been high interest in the Citrus Research and Field Trial (CRAFT) Foundation programs recently as a new cycle of applications has been bolstered by record funding of more than $100 million from the Florida Legislature. This includes the introduction of a new CRAFT program called the Emerging Varieties Program. It will provide citrus growers with a $40 per …
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 …
A presenter at the recent Citrus & Specialty Crop Expo said oxytetracycline (OTC) trunk injections improved fruit quality in several citrus scions that were studied. The presenter was John Chater, assistant professor and citrus genetic improvement horticulturist with the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Research and Education Center. Chater opened his presentation with these …
By Michael E. Rogers The 2025 Citrus & Specialty Crop Expo took place Aug. 20–21 at the Florida State Fairgrounds in Tampa. The event brought growers, researchers and industry professionals together for two full days of education and discussion. This year’s program featured what may have been a record number of University of Florida Institute of Food and Agricultural Sciences …
An Iranian study in controlled greenhouse conditions has enhanced the understanding of the influence of rootstocks on limes infected with witches’ broom disease of lime (WBDL). The study has also led to the acknowledgement that WBDL management may require tolerance of both scions and rootstocks. Authors of an article about the study are Samaneh Raheb, Sina Noorizadeh and Morteza Golmohammadi, …
When University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Professor Arnold Schumann started a citrus under protective screen (CUPS) plot in Florida in 2014, the grapefruit trees were in above-ground pots. The plot at the Citrus Research and Education Center was on 1.33 acres that included 1 acre of planted citrus. After five years, the grapefruit trees on …
The Citrus & Specialty Crop Expo is fast approaching. During the July All In For Citrus podcast, Tripti Vashisth, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) associate professor, discussed the extensive citrus seminar program scheduled for Aug. 20–21 at the Florida State Fairgrounds in Tampa. The citrus sessions will include more than 20 speakers over the course …
By Clint Thompson and Dale Sandlin The potential lack of satsuma mandarins this season in the cold-hardy citrus region should not discourage growers from adding to their production portfolio in the future. It just means they need to try other varieties, despite satsumas being the most commonly produced variety in the region. Jake Price, University of Georgia (UGA) area citrus …
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 …
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 …
In a recent webinar, Tracy Kahn provided details about seven lemon selections undergoing Citrus Research Board trials at four California locations. Kahn is the Givaudan Citrus Variety Collection endowed chair at the University of California, Riverside (UCR). The information she presented included the selections’ compatibility with various rootstocks. All of the lemon selections are irradiated and described as seedless, except …
Flavia Zambon, assistant professor with the University of Florida Institute of Food and Agricultural Sciences, recently provided an update about Millennium Block research at the Indian River Research and Education Center. The block, established in 2019–20, is a large-scale, 5,500-tree trial seeking HLB-tolerant citrus varieties. Zambon says some varieties in the trial are showing strong fruit attributes without the need …
The May All In For Citrus podcast features highlights from a recent OJ Break hosted by the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Research and Education Center (CREC) in Lake Alfred. Podcast host Frank Giles caught up with Michael Rogers, CREC director, during the event. Rogers summarized some of the information presented at the OJ …
The University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Research and Education Center hosted an OJ Break seminar on May 14. The speakers provided updates on developing a gene-edited citrus tree with resistance to HLB and how growers can use existing tools to mitigate the disease. Nian Wang, UF/IFAS professor, provided an update on the status of …
Researchers with the French Agricultural Research Centre for International Development (CIRAD) recently visited Brazil to discuss cooperative efforts with Fundecitrus to develop greening-resistant orange trees. The CIRAD researchers were Raphaël Morillon and Bárbara Hufnagel. CIRAD is an agronomic research and international cooperation organization for the sustainable development of tropical and Mediterranean regions. CIRAD maintains a large citrus genomic database on …
