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Below you'll see everything we could locate for your search of “disease”
Imidacloprid has been a key tool in the fight against HLB. The insecticide is particularly important in protecting young trees from the Asian citrus psyllid, the vector of HLB disease. Admire Pro SLN is currently labeled to treat young citrus trees for HLB. But a fire at the Bayer manufacturing facility where the product is made has disrupted supplies. During …
Conclusive data on trials in the Millennium Block, expected in early 2023, may reveal which of more than 5,500 trees can tolerate HLB, researchers say. The Millennium Block is at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Indian River Research and Education Center (IRREC) in Fort Pierce. IRREC Director Ronald Cave said the 20-acre grove, established …
A team of researchers at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) has successfully identified the CsDMR6 gene, which impacts a citrus tree’s reaction to the citrus canker pathogen. Zhanao Deng and Fred Gmitter, both professors and plant breeders, are members of that team. By editing the CsDMR6 gene in the plant’s DNA to interfere with …
The average incidence of HLB rose from 22.37% in 2021 to 24.42% in 2022 in Brazil’s citrus belt, an annual survey by Fundecitrus shows. That’s an increase of 9.16%. In the regions of Brotas, Limeira and Porto Ferreira, where the incidence was already high in previous years, HLB increased to even more worrying levels of 49.41%, 70.72% and 74.05%, respectively. …
By Arnold Schumann, Laura Waldo, Chris Oswalt, Napoleon Mariner, Timothy Ebert, Perseveranca Mungofa, Shankar Shrestha and Laura Cano-Castro Florida grapefruit production for the 2021–22 season was 92% less than in 2003–04, which was prior to the arrival of huanglongbing (HLB) disease [Source: U.S. Department of Agriculture National Agricultural Statistics Service, (USDA NASS)]. The decrease in Florida tangerine production for the …
As the 2022–2023 harvest season kicks off, Glenn Beck of Beck Bros. Citrus is hopeful for a better season than last year. He has witnessed the groves he owns and manages suffer the effects of HLB over the years. When it comes to managing the disease, Beck has a simple philosophy: Stick with a solid production plan. He acknowledges that …
By Jawwad A. Qureshi and Salman Al-Shami The citrus under protective screen (CUPS, Figure 1) system is designed so citrus can grow inside screened enclosures to protect it from huanglongbing (HLB) and the Asian citrus psyllid (ACP, Diaphorina citri). ACP is the primary vector of the pathogen responsible for causing HLB, known as citrus greening disease. This vector-pathogen combination is …
By Matt Smith It’s September in Florida, which means two things: the start to the latest “rebuilding year” for Florida football and the traditional peak of hurricane season. It was in September of 2017 that Hurricane Irma cut just about the worst path imaginable for Florida’s citrus growers. Along with causing physical damage to groves, Irma also contributed to disease …
The University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) has appointed internationally acclaimed entomologist and ecologist Matthew Thomas as director of the new Invasion Science Research Initiative (ISRI). Thomas will establish the framework for ISRI, which will bring together more than 120 UF/IFAS scientists from more than 20 departments currently dedicated to the detection, diversion, tracking and control …
By Jude Grosser The ultimate solution to the HLB problem is having good rootstocks that can mitigate or eliminate the disease’s impacts in any grafted commercial scion. With this, growers could profitably grow any scion, including grapefruit, Hamlin or even Murcott. Thus, rootstock breeding efforts focus on directly screening new rootstock hybrids for their ability to confer HLB tolerance or …
Florida’s fresh citrus industry was recently reminded of federal requirements for movement of fruit from some disease quarantine areas to contiguous states and to the European Union (EU). The reminders came from Paul Mears with the U.S. Department of Agriculture’s Animal and Plant Health Inspection Service (APHIS) during Citrus Packinghouse Day. Mears is the Florida Citrus Health Response Program (CHRP) …
By Fernando Alferez, Daniel Boakye, Susmita Gaire and Tim Gast Growing citrus under protective screen (CUPS) structures for fresh fruit production is effective in controlling HLB disease by completely excluding the Asian citrus psyllid (ACP, Diaphorina citri). After several years of research on CUPS to grow HLB-free trees in Florida, and with commercial growers increasingly adopting this technology, there is …
Total citrus acreage in Florida dropped 8% in the past year, to 375,302 acres, according to the Commercial Citrus Inventory Preliminary Report. The report was released Sept. 7 by the U.S. Department of Agriculture’s National Agricultural Statistics Service. The net loss of 32,046 acres is 19,942 acres more than was lost the previous season. New plantings, at 7,980 acres, are …
Studies that show some potential for control of Diplodia stem-end rot (SER) on fresh grapefruit were discussed at the recent Citrus Packinghouse Day. University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researcher Mark Ritenour made the presentation. Ritenour works as a professor of postharvest physiology and management at the Indian River Research and Education Center in Fort Pierce. …
By Sabrina Halvorson The Honey Bee Health Coalition unveiled the 8th edition of the Tools for Varroa Management Guide. The guide provides information on the latest tools and options for beekeepers and others in the United States and Canada to keep bees healthy and manage varroa mites, which spread disease within and among honey bee colonies. An expert team of beekeepers, …
Federal and state agriculture officials on Aug. 18 released portions of the Brownsville, Cameron County, Texas Mexican fruit fly (Mexfly) quarantine area. The action was taken by the U.S. Department of Agriculture Animal and Plant Health Inspection Service (APHIS) and the Texas Department of Agriculture (TDA) after three Mexfly life-cycles elapsed with no additional detections in these areas. As a …
Federal and state agriculture officials have expanded the citrus black spot (CBS) quarantine area in Florida. They have added four sections in Collier County and five sections in Glades County. The action was taken by the U.S. Department of Agriculture’s Animal and Plant Health Inspection Service (APHIS) in cooperation with the Florida Department of Agriculture and Consumer Services Division of …
A portion of San Diego County in California has been placed under a quarantine for the Mexican fruit fly (Mexfly). The quarantine follows the detection of six flies and one larva in and around the unincorporated area of Valley Center. The quarantine will affect any growers, wholesalers, nurseries and retailers of host fruit or host plants in the area. The …
SUMMARY: Many Florida citrus growers have made the decision to shift their focus away from saving older HLB-infected trees and toward protecting and strengthening young citrus trees, using soil probiotics, before too much damage is done. Understanding citrus trees’ vascular systemsCitrus trees have developed a complex but effective circulatory system for the uptake, storage, and utilization of water and nutrients. …
Federal and state officials in July established an Oriental fruit fly (OFF) quarantine in California and removed two Mexican fruit fly (Mexfly) quarantine areas in Texas. The U.S. Department of Agriculture’s Animal and Plant Health Inspection Service (APHIS) took the actions along with the California Department of Food and Agriculture (CDFA) and the Texas Department of Agriculture (TDA), respectively. CALIFORNIA …
