A Fundecitrus study found that the first four stages of orange tree shoot development are the ones that should be most protected against HLB-spreading psyllids. The Brazilian association reported that among the six stages of shoot development, the first four (V1 to V4) are the most attractive to the psyllid and favorable for its feeding and reproduction. Therefore, those are …
European Orange Crop to Decline
European Union (EU) orange production is projected at 6.1 million metric tons (MMT), down from 6.5 MMT in 2020–21, the U.S. Department of Agriculture’s Foreign Agricultural Service (FAS) reported recently. The decrease is driven by moderate production declines in Spain and Italy, which combined account for nearly 80% of total EU orange output. PLANTED AREA The forecast for total EU …
Advantages and History of Trunk Injection
Plant physiologist Ute Albrecht recently gave a presentation on increased fruit yield and other apparent benefits of injecting the antibiotic oxytetracycline into citrus tree trunks. The University of Florida Institute of Food and Agricultural Sciences researcher also discussed other advantages that trunk injection provides. These advantages include: Precise delivery of materials Elimination of spray drift Reduced risk for worker exposure …
The Status of Satsuma Mandarins in Georgia
Satsuma mandarins remain the predominant citrus variety produced in Georgia, but growers diversified more with their plantings this year. Jake Price, University of Georgia Extension coordinator, described the impact that growers could see with various citrus varieties now in place. He presented this information during the recent Citrus Growers’ Summer Update in Valdosta, Georgia. Price says the citrus industry in …
Non-Certified Donaldson Trees: Limited Availability for Growers
The Florida Department of Citrus’ Program for Expedited Propagation (PEP) of HLB-tolerant and resistant trees was conceived during the 2022 Florida legislative session following the discovery of the Donaldson tree among the collection at Whitmore Farms. The goal is to provide the resources needed to ramp up availability of Donaldson trees and others like it, so that growers interested in …
CRDF Board Acts on Research Recommendations
The Citrus Research and Development Foundation (CRDF) board of directors spent much of its monthly meeting in July considering recommendations from the foundation’s research management committee (RMC). TRACKING TREESThe RMC recommended that a request for proposals be put forth to create an inventory of all germplasm existing in field trials from the plant breeding programs CRDF has helped to fund. …
Two New Tools in the Fight Against HLB Seek EPA Registration
The recent Florida Citrus Industry Annual Conference featured educational presentations on navigating production in an environment where HLB is endemic in groves. Two of those presentations focused on new technology being developed for use in citrus. Two companies, Elemental Enzymes and TJ BioTech, have been collaborating with the Citrus Research and Development Foundation (CRDF) to research their respective products’ potential …
Orange and OJ Production Rise in Turkey
Orange and orange juice (OJ) production levels in Turkey are forecast to be higher in 2021–22 than in 2020–21, according to a recent U.S. Department of Agriculture Foreign Agricultural Service (USDA/FAS) update. Orange production is now expected to be 1.75 million metric tons (MMT), compared to 1.3 MMT the prior year. OJ production is projected at 10,000 metric tons (MT) …
Growers Addressing California Red Scale
Citrus growers are working to address California red scale populations, as second-generation crawlers have emerged in the San Joaquin Valley. University of California Cooperative Extension Area Citrus IPM Advisor Sandipa Gautam said a tool for tracking degree days in Kern, Tulare, Fresno and Madera counties can be a helpful resource for growers. Gautam explained that the hot and dry conditions …
European Orange Juice Production to Significantly Drop
European Union (EU) orange juice production in 2021–22 is forecast at 62,250 metric tons (MT) by the U.S. Department of Agriculture’s Foreign Agricultural Service (FAS). That’s a decline of about 19% from the 77,212 MT of orange juice the EU produced in 2020–21. The total volume of oranges channeled to processing depends on the crop quality and quantity of oranges …
Microregion Maps in Brazil Help With HLB
Microregion maps developed by Fundecitrus should help Brazilian citrus growers make the necessary decisions to combat HLB disease, also known as greening. Fundecitrus explained that the incidence of HLB differs in the various regions of Brazil’s extensive citrus belt. To allow citrus growers to better understand the places where the disease is located, a study by Fundecitrus divided the belt …
It’s Almost Time to Spray Gibberellic Acid
By Tripti Vashisth Gibberellic acid (GA) can benefit citrus trees in many ways. GA can improve vegetative and fruit growth while reducing fruit drop and flowering intensity. Evidence is mounting that repeated application of GA is needed to induce the desired positive effect on fruit growth and tree productivity. In a multiyear field trial on Valencia orange, monthly application of …
Expedited Tree Propagation Program Approved
The Florida Citrus Commission (FCC) on July 20 approved the Florida Department of Citrus’ (FDOC) plan for implementation of the Program for Expedited Propagation of HLB Tolerant and Resistant Trees (PEP). The program’s goal is to provide resources needed to ramp up the availability of the apparently HLB-tolerant Donaldson tree and others like it. The FDOC received $1 million in …
Trunk Injection for HLB: Pros and Con
The pros of injecting the antibiotic oxytetracycline (OTC) into citrus tree trunks to combat HLB appear to be numerous, including increased fruit yield, according to scientist Ute Albrecht. On the other hand, the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researcher only discussed one con, but it was a big one. “Trunk injections cause injury, and long-term …
New UF/IFAS Entomologist to Focus on Invasive Pests
Nicole Quinn recently joined the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) as an assistant professor of entomology. She’ll specialize in the biocontrol of invasive pests, insects and mites at the Hayslip Biological Control Research and Containment Laboratory. The lab is at the UF/IFAS Indian River Research and Education Center (IRREC) in Fort Pierce. Quinn will begin …
HLB Cause and Control Explained
University of Florida Institute of Food and Agricultural Sciences researcher Nian Wang reported in a July 20 webinar that HLB is a pathogen-triggered immune disease. After explaining the sequence in which the disease attacks trees, he suggested ways growers can use that knowledge to combat HLB. Wang is a microbiologist and cell scientist at the Citrus Research and Education Center. …
A Transformative Program
By J. Scott Angle Morgan McKenna always knew she’d return home some day. Three previous generations of McKennas hadn’t just made a living from citrus. They’d made a life of it. It’s a life she wanted, too. Morgan saw the family business as family first and business second. She was most interested in the emotional rewards of coming home to …
Tropicana to Cease Processing at Fort Pierce Plant
Tropicana Products Inc. advised the state of Florida in a July 15 letter that it will shut down its Fort Pierce processing plant on or about Sept. 13. The notification came in a letter from Tropicana human resources representative Jennifer Kane to the State Rapid Response Program. The program works to prevent or minimize the impacts of layoffs on workers, …
Turkey Mandarins: Greater Production, Less Profits
The U.S. Department of Agriculture’s Foreign Agricultural Service (USDA/FAS) recently forecast Turkey’s 2021–22 fresh production of tangerines and mandarins at 1.81 million metric tons (MMT). That is 200,000 metric tons (MT) or 14% higher than the prior year. Turkey’s tangerines and other citrus are mainly grown in the country’s Mediterranean region. Increased mandarin production in the Mediterranean region is expected …
PIECES OF THE PAST: Above and Beyond
By Brenda Eubanks Burnette Lena Smithers Hughes was born on a farm near Elgin, Tennessee, and helped to raise her seven siblings after her mother died when she was 14. She started teaching school at age 17, while still a student at Tennessee Tech, and went on to earn her degree from the University of Tennessee. In 1931, she and …