Sting Nematodes: A Growing Problem for Young Trees

Tacy CalliesPests

By Larry Duncan Successive hard freezes in Florida in the late 1980s resulted in widespread replanting of citrus groves. Within a few years, many groves on the Central Ridge had discrete patches of poorly growing, chlorotic young trees amid patches of vigorously growing trees. Stubby root symptoms on the declining trees suggested damage by sting nematodes (Belonolaimus longicaudatus). This nematode …

Mature Mentors ‘Have a Fabulous Time’

Ernie NeffMature Mentors

About 75 older citrus growers, known as Mature Mentors, held their annual meeting in Tavares recently. John Jackson, a retired county agent who worked in the Tavares Extension office, spoke about the event. “A number of years ago, one of my grower friends, Dixie Royal, and I were having lunch,” Jackson recalled. “We said, ‘You know, we ought to invite …

Citrus Expo

Trees Improving with Good Nutrition

Ernie NeffNutrition

Many things are improving in Florida citrus groves, and Tripti Vashisth gives most of the credit to constant and balanced fertilization. Vashisth is an assistant professor at the University of Florida Institute of Food and Agricultural Sciences Citrus Research and Education Center in Lake Alfred. “You can see that tree health seems to be improving; growth is improving,” Vashisth said. …

FDOC

Drone Images Can Accurately Find, Count Citrus Trees

Daniel CooperIndustry News Release, Research, Technology

By using drone technology, Florida citrus growers can find out how many trees live in their groves and, eventually, they may detect the health status of the trees, a new University of Florida study shows. Imaging from unmanned aerial vehicles (UAVs) can accurately detect and count citrus trees and spaces where trees have had to be removed in groves, said …

Planting: ‘More Options Than Ever’

Ernie Neffplanting, Varieties

Michael Rogers recently said there is increased optimism in the Florida citrus industry. “With that optimism, growers are starting to give more consideration to replanting,” said Rogers, director of the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Research and Education Center in Lake Alfred. According to Rogers, some growers who held off on planting in the …

Strategies for Stronger Roots

Tacy CalliesRoot health

Citrus growers discuss production practices to improve root health. By Tacy Callies What began as an experiment in Ben Krupski’s 10-acre grove in Howey-in-the-Hills, Florida, is now a common practice he uses as production manager for Lennon Grove Service. Four years ago, Krupski started testing the use of compost in his small leased block of Hamlin trees. In the first …

Florida orange

Update on the Florida Citrus Recovery Block Grant

Daniel CooperCitrus, Industry News Release

The Florida Citrus Recovery Block Grant (CRBG) program continues to move forward. As of Friday, the Florida Department of Emergency Management (FDEM) had received 718 applications and submitted more than $23.6 million to financial processing. FDEM staff has been working overtime to ensure the payments are received in an efficient manner. FDEM and the U.S. Department of Agriculture (USDA) Risk Management …

weather

Helping Generations Cope with Freezes

Ernie Nefffreeze, Weather

Winter Weather Watch is a University of Florida Institute of Food and Agricultural Sciences Extension program that has helped generations of Florida citrus growers be prepared for freezes. “Back in the ’60s, we didn’t have the Internet. We had rotary dial phones,” says multi-county citrus Extension agent Chris Oswalt, who discusses the history and workings of Winter Weather Watch, which …

PFD

When to Be on Canker Alert

Ernie NeffCitrus

Citrus fruit is susceptible to canker after it reaches three-eighths of an inch in diameter, University of Florida Institute of Food and Agricultural Sciences Extension pathologist Megan Dewdney told growers this winter. “Once you get to that point and we get rain, then all bets are off as to whether you will keep canker out,” Dewdney said at a winter …

labor

Nutrients, Hurricane Impact and Production

Ernie Neffhurricane

Grower and tree hedger Frank Youngman was among the attendees at a Feb. 28 grower forum in Sebring, Florida. He discussed nutrition, Hurricane Irma’s impact, tree condition and production. Youngman said nutrients are “the key factor in what we’re seeing as far as tree quality, also fruit quality, and the ability for the trees to maintain the fruit throughout the …

field hearings

Exploring the Economic Impact of California’s Citrus Industry

Daniel CooperCitrus

The California citrus industry is valued at nearly $3.5 billion with over 3,000 growers farming 320,000 acres throughout the state. The size and scale of citrus production has both direct and indirect effects on California’s overall economy. “If you think about primary production, which citrus is, it requires that the citrus growers buy what’s called ‘intermediate inputs’ or inputs from …

nutrition

Developments at CRDF

Ernie NeffCRDF

Citrus Research and Development Foundation (CRDF) Chief Operating Officer Rick Dantzler updated growers on CRDF activities during the Florida Citrus Show in January. He summarized his comments in an interview after his presentation. Here are a few key points: “We’ve had a 25 percent reduction in our staff” since he joined CRDF last year, Dantzler said. “Growers are having to …

Sneak Peek: March 2019 Citrus Industry Magazine

Tacy CalliesSneak Peek

The March issue of Citrus Industry magazine gets to the root of the matter. Several articles cover the topic of root health. Citrus growers Ben Krupski and David Wheeler share successful strategies for stronger roots. Methods include the use of compost, more frequent irrigation and other techniques. Three University of Florida research articles in the March issue also address root-related …

Citrus Expo Seminar Planning Underway

Tacy CalliesCitrus Expo

Citrus Expo is just six months away, which means the planning process has started for the seminar program. Growers of citrus, vegetables and specialty crops will once again have the opportunity to earn continuing education units and Certified Crop Adviser credits at the event. Citrus Expo will kick off with a general session on top agricultural issues of importance to …

forecast

Grower Replanting Initiative Program for HLB in the Works

Ernie NeffHLB Management

Editor’s Note (Feb. 20, 2019): The name of the program has been changed from the Grower Replanting Initiative Program to the Citrus Research and Field Trial Program. According to Florida Citrus Mutual CEO Mike Sparks, the U.S. Department of Agriculture (USDA) has given “concept approval” for massive Florida grower field trials to determine what existing research might work in the …

Fungal Foliar Disease Concerns for 2019

Tacy CalliesDiseases

By Megan Dewdney The Florida citrus-growing seasons of 2017 and 2018 were quiet in terms of fungal foliar disease outbreaks. Small pockets of severe disease occurred sporadically, but there were no widespread reports of diseases like postbloom fruit drop, much to the relief of the industry. Greasy spot has flared up in a few locations on cultivars like Valencia, and …

fresh

Important Food-Safety Requirements

Ernie NeffFood Safety

Mark Ritenour, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) post-harvest Extension specialist, provided updates about food-safety requirements at the recent Florida Citrus Show in Fort Pierce. His focus was on impacts fresh fruit growers and packers will feel from the Food Safety Modernization Act’s requirement that the Food and Drug Administration rewrite its Produce Safety Rule. Ritenour …

florida citrus

Citrus Funding Could Remain Steady as Results Sought

Daniel CooperCitrus, Citrus Greening

Senate Appropriations Chairman Sen. Ron Bradley supports maintaining the current level of funding for the state’s citrus industry, as a decade of research about combating deadly citrus greening disease is applied more in groves. After hearing presentations Wednesday from citrus-industry leaders, Bradley, R-Fleming Island, said there “certainly” won’t be a drop from this year’s $23.2 million in funding. At the …

Covers Protect Young Trees from HLB

Ernie NeffHLB Management

Individual protective covers (IPCs) on young trees have prevented HLB infection in one year of study, a University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researcher said. Fernando Alferez, citrus horticulturist at the Southwest Florida Research and Education Center (SWFREC), announced his promising results at the recent Florida Citrus Show in Fort Pierce. “They (IPCs) are protecting the …

chemicals

Automated System Under Study to Deliver Bactericides

Daniel CooperCitrus Greening, Industry News Release, Research

Imagine using a robotic arm to grip and puncture the trunk of a citrus tree to deliver chemicals into the vascular parts of the plant, reducing its susceptibility to the citrus greening disease. Ozgur Batuman, an assistant professor of plant pathology at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS), leads a team of researchers trying to …