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Below you'll see everything we could locate for your search of “disease”
Xylella fastidiosa (Xf) bacterium causes incurable diseases that make plants wither and possibly die, scorching and browning leaves and reducing the size of fruit in a wide variety of important crops. Citrus variegated chlorosis is among the diseases that Xf causes. Pablo J. Zarco-Tejada and Tomas Poblete with the University of Melbourne describe the Xf bacterium as “the number one …
At the recent Citrus Research and Education Center (CREC) field day and open house, Arnold Schumann showed visitors a Jackson grapefruit trial aimed at protecting trees from HLB. Schumann is a professor at the University of Florida Institute of Food and Agricultural Sciences CREC in Lake Alfred. The trial combines the use of individual protective covers (also known as IPCs …
The U.S. Department of Agriculture’s (USDA) National Institute of Food and Agriculture (NIFA) announced an investment of nearly $11 million for research to combat HLB. “NIFA’s Emergency Citrus Disease Research and Extension program brings the nation’s top scientists together with citrus industry representatives to find scientifically sound solutions to combat and prevent HLB at the farm-level,” said NIFA Director Carrie …
The important process that gets new citrus varieties in the hands of growers is the main topic of the November episode of the All In For Citrus podcast. Michael Rogers, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Research and Education Center (CREC) director, discusses the recent CREC open house where breeders displayed potential new varieties for …
University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers gave a crowd of growers suggestions that can help keep citrus trees healthy. The panel discussion was part of the Nov. 16 open house and field day at the UF/IFAS Citrus Research and Education Center in Lake Alfred. HLB-affected trees need enhanced nutrition “throughout the growing season,” said horticulturist …
Kelly Morgan recently summarized several recommended changes in Florida citrus production practices brought on by the devastating disease HLB. Morgan is a University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) soil and water science professor. He discussed what growers need to know to follow best management practices (BMPs) at the recent Citrus Nutrition Day at the UF/IFAS Citrus …
By Ute Albrecht, Bo Meyering, José Chaparro and Kim D. Bowman Grafting is an ancient horticultural technique. There is evidence of citrus grafting in the Roman era dating back to the fifth century. In western Europe, grafting was regularly practiced in the 16th and 17th centuries when citrus was grown as an exotic ornamental in containers in orangeries. In Florida, …
Fred Gmitter and Jude Grosser discuss some relatively new varieties they like – a mandarin, some oranges and a pummelo-grapefruit hybrid. Gmitter and Grosser are University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) plant breeders at the Citrus Research and Education Center. SUGAR BELLE® MANDARIN“Looking at Sugar Belle® and its performance against citrus greening, it’s clearly one of …
Researchers at the University of Florida have found a way to manage groves infected with HLB by managing the timing of their fertilization. By splitting the application of nutrients to citrus rootstocks, they have been able to improve plant growth and fruit yields. The research was recently published in Soil Science Society of America Journal. Alisheikh Atta and his colleagues …
HLB-tolerant rootstock seeds from the University of Florida (UF) have arrived in Dareton and Bundaberg to be evaluated under Australian conditions. Citrus Australia CEO Nathan Hancock said it’s important that the rootstocks have arrived in Australia well before the Asian citrus psyllid (ACP) and the HLB it spreads. “We need to know if these rootstocks from Florida are going to …
By Ramdas Kanissery, Nirmal Timilsina and Mongi Zekri Weed control is crucial for the growth and establishment of young citrus trees. Chemical weed control with herbicides is an efficient and cost-effective method for managing weeds in newly planted groves. However, before applying herbicide products, care must be taken to avoid damaging young trees and newly planted resets. Every so often, …
Information to help growers find and control citrus black spot (CBS), as well as CBS regulatory procedures, were provided in an Oct. 26 training workshop in Arcadia. The workshop was hosted by multi-county citrus Extension agent Ajia Paolillo. University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) plant pathologist Megan Dewdney discussed the pest’s lifecycle, potential spread due to …
Plant breeders Fred Gmitter and Jude Grosser report on their efforts to develop rootstocks that perform well in Florida from several perspectives. In addition to seeking tolerance to HLB, they are working on rootstocks that might control tree size, deal with other diseases and pests and perform in a range of soils. Gmitter and Grosser are University of Florida Institute …
By Amit Levy Citrus leprosis is an exotic viral disease not currently present in Florida citrus, although the virus is present in non-citrus hosts. This disease was reported in citrus in Florida and Brazil in the early 1900s, where it caused great crop and tree losses, but was eliminated from Florida in the early 1960s. In recent years, the disease …
Effective immediately, the U.S. Department of Agriculture’s Animal and Plant Health Inspection Service (APHIS) is establishing three new quarantine areas and expanding two existing quarantine areas for citrus canker in Cameron County, Texas, to prevent the spread of the disease. This action is necessary because APHIS confirmed the positive identification of citrus canker in citrus trees from residential areas in …
Citrus Research and Education Center (CREC) Director Michael Rogers previews the Nov. 16 Open House/Field Day at the CREC in Lake Alfred. The CREC is part of the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS). The program will begin at 9 a.m. “It starts off with a panel discussion, talking about strategies to improve overall health of …
By Yiannis Ampatzidis and Ute Albrecht Optimizing nutrition is important for tree health and productivity and can improve tolerance to stresses and diseases. Good nutrient management requires regular field monitoring to identify problems and examine crop responses. Leaves need to be collected and sent to a specialized laboratory for detailed information on macronutrients and micronutrients, which is time-consuming and costly. …
One of the unique ways of managing citrus greening disease developed by University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers is not for all producers. Citrus under protective screen (CUPS) is just too expensive for all growers to take advantage of, says Fred Gmitter, a UF/IFAS citrus breeder. “It’s an extremely expensive investment,” Gmitter says. “For that …
Florida led the United States in grapefruit production in the 2020-21 season. Sunshine State growers produced a combined 174,000 tons for the fresh and processed markets. California came in second with 156,000 tons, while Texas was third at 96,000 tons. This production information was recently reported by the U.S. Department of Agriculture’s Economic Research Service. Texas grapefruit production declined 46% …
The University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) citrus breeding team discusses development of new varieties and rootstocks in the October episode of the All In For Citrus podcast. But before that discussion begins, Michael Rogers, UF/IFAS Citrus Research and Education Center (CREC) director, has the details on two upcoming events, including one in which growers can …
