By Jawwad Qureshi, Lukasz Stelinski and Fernando Alferez Management of huanglongbing (HLB) has focused on reducing the vector Asian citrus psyllid (ACP) and improving tree health, thus requiring a multi-pronged approach. Several elements of an HLB management system are either available or under current investigation. Maintenance of clean nursery stock, vector management and tree nutrition are widely implemented, while incorporation …
Grower Pete Spyke Discusses New Varieties
Grower and gift fruit shipper Pete Spyke was among more than 100 people who sampled approximately 50 new University of Florida varieties at the Citrus Research and Education Center on Dec. 4. “There’s some good-tasting, easy-peel, seedless (mandarin) varieties that I think will be working their way through the gauntlet,” said Spyke. He added that several will probably be released …
2016-17 Florida Citrus Season: Smaller Harvest, Higher Prices
A new report from economists with the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Economic Impact Analysis Program (EIAP) showed higher prices offset production declines during Florida’s 2016-17 citrus growing season, and the industry’s overall economic contributions changed little from 2015-16. Titled, “Economic Contributions of the Florida Citrus Industry in 2016-17,” the report was formally presented to …
Ag Engineer Joins UF Scientists to Restore Grapefruit Industry
An agricultural engineer whose current research projects include the simulation of agricultural management impacts on water quantity and quality in the upper Floridan aquifer has joined the University of Florida’s Indian River Research and Education Center (IRREC). Sandra Guzmán will lead the center’s irrigation and hydrology program. Guzmán started her position as an assistant professor of agricultural and biological engineering …
California Citrus Conference Calls Attention to Key Industry Issues
By Len Wilcox The Citrus Research Board’s (CRB) annual California Citrus Conference took place in October in Visalia. This year’s event included a celebration of the organization’s 50th anniversary. The CRB is an important resource to California’s citrus industry. It awards more than $7 million each year to researchers throughout the state. Since 2008, CRB has focused much of its …
International Citrus Breeders Draw Attention
Approximately 70 growers, researchers and others listened to citrus breeders from other countries discuss their programs and objectives in Lake Alfred, Florida, earlier this month. The University of Florida Institute of Food and Agricultural Sciences Citrus Research and Education Center (CREC) hosted the event. Michael Rogers, CREC director, provided an overview of the gathering. “This international citrus breeders symposium is …
December Citrus Crop Forecast Unchanged
The U.S. Department of Agriculture’s 2018-2019 Florida all-orange forecast for December is 77 million boxes, unchanged from the November forecast. If realized, this forecast will be 71 percent more than last season’s final production. The forecast consists of 32 million boxes of the non-Valencia oranges (early, midseason and Navel varieties) and 45 million boxes of Valencia oranges. Current fruit size …
Researchers to Study New HLB Treatment Method
University of California (UC) Davis research scientist Louise Ferguson is taking part in a $3.4 million project titled “Development of an automated delivery system for therapeutic materials to treat HLB-infected citrus.” The study is funded by the U.S. Department of Agriculture’s National Institute of Food and Agriculture. The four-year project includes work by researchers at the University of Florida, UC …
Taking Technology to the Grove
By Ernie Neff Jerry Mixon’s use of netting to keep birds from blueberries helped pique his interest in growing citrus under protective screen (CUPS) to exclude HLB-spreading psyllids. But he credits University of Florida researcher Arnold Schumann with helping him bring his Polk County CUPS project to fruition. Mixon met Schumann in 2015, the year after Schumann’s 1-acre CUPS was …
Florida Citrus Hall of Fame Inductees Chosen for 2019
Three distinguished leaders will be inducted into the Florida Citrus Hall of Fame at the 57th Citrus Celebration Luncheon at 11:30 a.m. on March 8 at Florida Southern College in Lakeland. Tim Hurner of Sebring, Richard J. Kinney (deceased), formerly of Lakeland, and Peter McClure of Port Saint Lucie will be honored at the luncheon. Hurner Tim Hurner is a fourth-generation Florida …
Kaolin Clay May Be Viable Option to Protect Citrus Trees from ACP
Florida citrus growers have begun taking notice of kaolin clay, a powdery white compound, because it can cause Asian citrus psyllids (ACP) to “not take notice” of their groves. Long used to protect other fruit and vegetable crops, kaolin can also conceal citrus trees from hungry psyllids by confusing their visual sensory system, said Michael Rogers, director of the Citrus …
Vigilance Keeps HLB at Bay
By Len Wilcox California agriculture has long kept a watchful eye on the spread of HLB (huanglongbing or citrus greening disease). It’s a firestorm on the horizon, and the devastation the disease has wrought in Florida and other parts of the world has the full attention of California citrus growers. Working closely with industry leaders and grower groups, federal, state …
High-Density Plantings Could Boost Profits for Florida Citrus Growers
Florida citrus growers who plan to establish new groves might want to consider high-density planting, according to experts with the Citrus Research and Education Center (CREC) in Lake Alfred, part of the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS). Wider spacing between trees and rows was common decades ago but, with yields down and input costs up, …
Sneak Peek: December 2018 Citrus Industry Magazine
Looking for the phone number of your local citrus association? Need to connect with a fertilizer vendor? Or perhaps you want to send an email to your Extension agent? Find all of the industry contact information you need in the 2019 Citrus Guide. Citrus Industry magazine’s annual guide is a directory of citrus organizations, agencies, researchers, Extension agents and vendors. …
Soil Microbial Communities for Citrus
University of Florida Institute of Food and Agricultural Sciences soil microbiologist Sarah Strauss discusses her research on ways to potentially use microbes to improve tree root health. She says microbial communities in the soil can be manipulated indirectly by changing the soil environment or directly by adding specific organisms to the soil. “We’ve seen impacts on the overall soil microbial …
Research Update: Citrus Under Protective Screen
By Arnold Schumann, Timothy Ebert, Laura Waldo, Danny Holmes, Napoleon Mariner, Gary Test, Chris Oswalt, Rhuanito Ferrarezi and Ricardo Lesmes Two studies with citrus under protective screen (CUPS) were established at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Research and Education Center (CREC) and Indian River Research and Education Center (IRREC) in 2013–14. The goal …
Increasing Yield Through High-Density Plantings
By Rhuanito Ferrarezi, Alan Wright and Arnold Schumann High-density plantings have been tested worldwide in advanced citrus production systems (ACPS) to increase efficiency of water, fertilizer and light, and to maximize yield per area. After the onset of huanglongbing (HLB) in Florida, canopy growth reduced drastically due to negative impacts on plant health, creating the need for new plant spacing …
Grower Optimistic About Citrus Under Protective Screen
Jerry Mixon of KLM Farms hosted about 40 growers, researchers and others at his citrus under protective screen (CUPS) facility in Alturas on Nov. 15. Alturas is between Bartow and Lake Wales in Polk County, Florida. At the field day, Mixon discussed his experience with the growing system and his expectations for it. He has 30 acres under screen that …
Orange Imports Increase as Domestic Juice Supply Remains Squeezed
Until a solution for citrus greening is found, imports will be key to keeping Florida’s citrus industry afloat. Domestic orange production has been declining steadily over the last two decades, with citrus greening disease being the leading cause of decreased acres and productivity. As the gap between domestic production and consumption has widened, imports have increased to boost dwindling domestic …
Subirrigation Holds Promise for Citrus Nurseries
Savings in water and fertilizer, along with faster tree growth, can be achieved by using subirrigation in citrus nurseries. University of Florida Institute of Food and Agricultural Sciences researcher Rhuanito (Johnny) Ferrarezi reported on the studies leading to those conclusions at a recent citrus nursery workshop. The event was held at the Citrus Research and Education Center in Lake Alfred, …





























