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Below you'll see everything we could locate for your search of “Hamlin”
U.S. Department of Agriculture-Agricultural Research Service (USDA-ARS) scientists are studying the possibility of the Donaldson sweet orange replacing the HLB-ravaged Hamlin in orange juice (OJ). The scientists work at the U.S. Horticultural Research Laboratory in Fort Pierce, Florida. While assessing citrus trees with oranges that might be used for commercial OJ production, the scientists found the Donaldson tree at the …
By Fernando Alferez and Divya Aryal Brassinosteroids (BRs) are a class of plant growth regulators with several effects on plant growth and development. University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) work in the last few years has shown that BR treatments may influence internal maturity in Hamlin sweet orange if performed at the right time. Research has …
By Taylor Livingston and Tripti Vashisth Fighting HLB alongside weather disasters like freezes and hurricanes is leaving growers with little options for sustaining yields. The Hamlin sweet orange variety is known for higher susceptibility to HLB symptoms which cause rapid tree decline, including increased pre-harvest fruit drop and canopy loss. Production strategies that target fruit drop and canopy health improvement …
By Tripti Vashisth and Taylor Livingston Grower-led trials in 2022 showed positive results of gibberellic acid (GA) treatment on Hamlin trees in Florida. This article primarily discusses two growers’ trials in detail. Both sites showed improvement in fruit production from the GA application. Many growers have adopted GA applications in the past year as part of their grove management strategy. …
By Gary England, Fred Gmitter and Manjul Dutt In 2014, most groves in Central Florida had citrus greening infection rates approaching 100%, but a Lake County grower reported that some trees in his Hamlin on Swingle blocks seemed to be relatively healthy. Some visual HLB symptoms were observed on these “surviving” trees, but they did not have the massive fall …
By Tripti Vashisth In a multi-year field trial, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers have seen beneficial effects of gibberellic acid (GA) on Valencia sweet oranges. Monthly application of GA (September to January) on Valencia improved yield on average by 30%, reduced fruit drop and elicited enhanced plant defense response. These benefits are possibly due …
Manjul Dutt recently discussed his research on the Parson Brown (PB) sweet orange, which shows some characteristics that could make it more attractive than Hamlin, Florida’s leading early-season orange. Dutt is a University of Florida Institute of Food and Agricultural Sciences horticultural sciences researcher at the Citrus Research and Education Center in Lake Alfred. Dutt’s research, funded by the Citrus …
Twenty-four citrus scions were approved by the Citrus Research and Development Foundation (CRDF) on March 23 for eventual use in multiple field trials around Florida. The purpose of the trials will be to find an early-season orange that is more tolerant of HLB disease than Hamlin, said CRDF Chief Operating Officer Rick Dantzler. Hamlin has long been the primary early-season …
By Ute Albrecht, Sudip Kunwar and Jude Grosser Prior to 1865, the only rootstocks used in Florida were sour orange and sweet orange. Use of grafted trees instead of seedling trees became necessary because of the devastating effects of phytophthora on sweet orange. Sour orange was widely used as a rootstock because of its resistance to phytophthora and other positive …
University of Florida/Institute of Food and Agricultural Sciences plant breeder Jude Grosser makes a case for Florida’s citrus industry replacing Hamlin oranges with early-maturing Valencia oranges that he and others are developing. “I think that’s a no-brainer because Hamlins are having a really bad time with greening, and orange juice sales are declining,” Grosser says. “Hamlin is half our juice. …
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 Feb. 10 forecast for Brazil’s São Paulo and Triângulo/Sudoeste Mineiro region is 292.6 million boxes of oranges. That’s a 0.7% reduction from the Dec. 10 forecast of 294.81 million boxes, and a 7% reduction from the initial forecast of the season on May 9 of 314.6 million boxes. The reduction is due to a decrease in the average size …
Valencia SPB 1-14-19 remained the most propagated Florida citrus variety for at least the fourth straight year in 2024–25, according to the Florida Department of Agriculture and Consumer Services (FDACS). The FDACS Division of Plant Industry’s Bureau of Citrus Budwood Registration recently released the Citrus Budwood Annual Report 2024–25. The report is a highly detailed 44-page document. US-942 returned as …
By Peter Chaires Florida breeding programs have been largely focused on the juice stream in recent years. And for good reasons. Retaining the remaining processing capacity and infrastructure is of paramount importance to support Florida’s orange juice industry. Numerous sweet oranges have been released in hopes of achieving incremental improvements in HLB tolerance while improving juice quality. Likewise, there has …
In the latest All In For Citrus podcast, Michael Rogers, director of the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Research and Education Center, discussed a statewide citrus workshop hosted at the Southwest Florida Research and Education Center in January. The event provided a day full of educational presentations covering a wide range of topics. Rogers …
The University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) hosted a statewide citrus grower workshop in mid-January at the Southwest Florida Research and Education Center in Immokalee. The event offered a full day of education covering a wide range of topics, including management of pests, diseases, weeds and nutrients. Ute Albrecht, UF/IFAS associate professor of plant physiology, provided …
Sponsored Content Question: Are there any updates on the performance of ReMedium TI® and citrus yield improvements? Answer: We are hearing from growers about groves in central and southern Florida where they are observing HLB recovery. I am getting reports from growers that have been steadfast users of ReMedium TI® that seem to be in agreement with much of the …
In the recent Highlands County Citrus Growers Association (HCCGA) newsletter, Riley McKenna discussed conditions in groves, shrinking infrastructure and the importance of block grant funding. GROVE OBSERVATIONS McKenna, HCCGA president, stated that “faint hints of March bloom are already beginning to fill the air.” He added that the weather shows little indication of stabilizing or slowing tree growth, “which could …
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 …
Fundecitrus’ Dec. 10 orange crop forecast for the São Paulo and Triângulo/Southwest Minas Gerais Citrus Belt in Brazil is for 294.81 million boxes of oranges. That’s a reduction of 3.9% from the September forecast of 306.74 million boxes and a 6.3% reduction from the initial May forecast of 314.6 million boxes. The two main reasons for the reduction in the …
