 |  |  |  |  |  |  |  |  |
Below you'll see everything we could locate for your search of “Hamlin”
By John M. Chater Citrus tree trunk injection of antibiotics has been recently and widely used in Florida. The success of oxytetracycline (OTC) in sweet orange to mitigate huanglongbing (HLB or citrus greening) disease has been documented by the laboratory of Ute Albrecht, associate professor at the University of Florida. Some results suggest that OTC injection can improve Brix, ratio, …
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 …
Three University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers recently issued the document Suggested Use Pattern of Injectable Antimicrobials for Huanglongbing (HLB) Management. The authors are Ute Albrecht, associate professor of horticulture; Ozgur Batuman, associate professor of plant pathology; and Megan Dewdney, associate professor of plant pathology. The antimicrobials for Florida citrus are ReMedium TI and Rectify; …
Brazil’s Fundecitrus recently released its 2025–26 Tree Inventory of the São Paulo and West-Southwest Minas Gerais Citrus Belt. The report shows the estimated grove inventory as updated in March 2025. The area planted with citrus showed a slight increase compared to the previous mapping, contrary to the trend observed in recent surveys. While there was a reduction of 16,956 hectares …
Growers and industry stakeholders gathered in Bonita Springs last week for the Florida Citrus Industry Annual Conference hosted by Florida Citrus Mutual. Despite the challenges of HLB and recent hurricanes, the event drew strong attendance. The educational program provided updates on potential solutions for the disease that has plagued the industry for two decades. SEEKING A RESISTANT TREEOne of the …
By Tripti Vashisth, Maricielo Postillos and Taylor Livingston In recent years, many citrus growers in Florida have begun using gibberellic acid (GA) to enhance tree growth and productivity. Initially, the recommendation was to apply GA monthly from September to January for Valencia oranges to maintain canopy health, reduce fruit drop and improve yields. However, some growers are hesitant about applying …
Fundecitrus and its cooperators on May 9 forecast the 2025–26 orange harvest in Brazil’s Citrus Belt of São Paulo and Triângulo/Sudoeste Mineiro at 314.6 million boxes. That would be a 36.2% increase over the 2024–25 harvest of 230.87 million boxes. The expected larger harvest is mainly attributed to more fruit per tree. The increased number of fruit is due to …
Florida Foundation Seed Producers, Inc. (FFSP) has signed a licensing agreement with New Varieties Development and Management Corp. (NVDMC) to introduce new citrus varieties showing tolerance to HLB. The HLB-tolerant varieties covered by the agreement are: The collaboration also includes the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) and the Florida Department of Citrus. It aims to …
By Fernando Alferez, Divya Aryal and Saoussen Ben Abdallah In the last few years, the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) citrus horticulture team at the Southwest Florida Research and Education Center (SWFREC) in Immokalee has performed several research trials in commercial farms and at the experimental farm at the SWFREC to elucidate the effect of …
Fundecitrus and its cooperators released the final orange forecast of the 2024–25 season for Brazil on April 10. Final production in the São Paulo and West-Southwest Minas Gerais Citrus Belt was 230.87 million 90-pound boxes of oranges, a 1% increase from the last forecast in February. The 2024–25 crop was confirmed as the second smallest in the last 37 years. …
Expansion into the juice market may unlock a profitable marketing opportunity for Georgia citrus growers. But questions remain before growers can start planning this new course of action, says Lindy Savelle, executive director of the Georgia Citrus Association. “Hamlins and perhaps some early-season Valencias would work here in Georgia,” Savelle said. One question Georgia growers have about entering the juice …
The Citrus Research and Field Trial (CRAFT) Foundation board of directors has approved the opening of a supplemental Program for Expedited Propagation (PEP) Solid Set Planting application window. The application link is live here. Applications are due by 5:00 p.m. on April 30. PEP projects must be solid-set plantings of scions released as part of the Florida Department of Citrus- …
By Peter Chaires The 2024–25 citrus season is another challenging one for Florida’s valued citrus nurseries. Uncertainty has been the consummate challenge for nurseries trying to anticipate grower needs. One large nursery grower recently interviewed believes that door-yard propagations are now nearing commercial propagations. Who would have ever thought we would see this happen? However, after a dismal 2022–23 propagation …
Different formulations of zinc applied by foliar spray increase fruit yield by reducing fruit drop in Hamlin and Valencia oranges, according to horticulturist Fernando Alferez. In some cases, he said, potassium enhances the beneficial effects of zinc. Alferez is a University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) associate professor at the Southwest Florida Research and Education Center …
By Maegan Beatty On Feb. 18, Jude Grosser and Fred Gmitter hosted an online informational session on new citrus varieties and how to plant a profitable crop in the future. Both Grosser and Gmitter are part of the citrus improvement team at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Research and Education Center. Their main …
Sour orange jumped six spots from the prior year to become the most-budded rootstock in Florida citrus nurseries in 2023–24. Rootstock US-942 had held the top spot for at least the last three years. Valencia SPB-1-14-19 easily maintained its spot as the most-budded variety clone. It has held the top spot for at least four straight years. The number of …
By Peter Chaires On October 24, 2024, the University of Florida’s (UF) Cultivar Release Committee unanimously approved the release of seven citrus varieties to Florida Foundation Seed Producers, Inc. Florida Statutes now require that, before being released to the general public, any new variety of citrus developed as a result of any research or study accomplished using any percentage of …
Fundecitrus and its cooperators released an orange crop forecast on Feb. 10. Total production is forecast to be 228.52 million boxes for 2024–25. This is a 2.4% increase from the December forecast of 223.14 million boxes, but a decrease of 1.7% from the season’s initial orange estimate that was released in May. This forecast is for the São Paulo and …
By Fernando Alferez and Divya Aryal Like the work being done with Hamlin sweet orange, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers are studying the effect of brassinosteroids (BRs) on the internal maturation of Valencia sweet orange fruits. The conditions of the treatments are the same as in Hamlin: A treatment of 186 milliliters of BR …
The Florida Citrus State of the Industry Survey seeks input from growers on key issues affecting their groves. The survey has been conducted for many years, has tracked the trajectory of HLB and reported on production practices. While not a scientific survey, it has reflected general trends over the years. Last month, we published results on trunk-injection therapy and the …
