study

Study Analyzes the Economics of Cover Crops

Daniel CooperCover Crops, Economics, Research

In the face of HLB in Florida, a recent study delved into the economic viability of incorporating cover crops in citrus groves to enhance soil health and overall tree well-being. Shourish Chakravarty and Tara Wade wrote an article, Cost Analysis of Using Cover Crops in Citrus Production, about the study. Both authors are with the University of Florida Institute of …

cycle 2

California’s CRaFT Accepting Cycle 2 Applications

Daniel CooperCalifornia Corner, Psyllids

California’s Citrus Research and Field Trials (CA-CRaFT) program is now accepting Cycle 2 applications from commercial growers. This initiative aims to showcase the efficacy of additional control measures against the Asian citrus psyllid (ACP). ACP is the carrier of the Candidatus Liberibacter asiaticus bacterium causing huanglongbing (HLB) disease in citrus. For Cycle 2, applications will be accepted until program capacity …

How to Enhance Pre-emergent Herbicide Performance

Daniel CooperTip of the Week, weeds

By Ramdas Kanissery and Robert Riefer Pre-emergent herbicides, also known as residual herbicides, are highly effective in the long-term suppression of weeds in citrus tree rows. These herbicides remain in the soil and prevent susceptible weeds from germinating. In order to achieve the best weed control results, pre-emergent herbicides need to stay within approximately the top 5 inches of soil, …

triazine

Brassinosteroid and Weed Management Research Updated

Daniel CooperHLB Management, weeds

Brassinosteroids for HLB-infected trees and the latest on year-round weed management were discussed at a Jan. 17 OJ Break at the Citrus Research and Education Center in Lake Alfred, Florida. University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) multi-county citrus Extension agent Chris Oswalt hosted the event. UF/IFAS assistant professors Fernando Alferez and Ramdas Kanissery made the presentations …

Sticking to a Solid Production Plan

Tacy CalliesNutrition, Production, Soil Health

Matthew Machata grew up in Polk County on the family’s citrus farm, Rolling Meadows Ranch Groves in Lake Wales, Florida. After he graduated high school, he joined the Marine Corps and served two tours in Iraq. He then attended Auburn University, where he earned a degree in aerospace engineering. At the time, his plans didn’t include farming, but that changed …

Groups Call for Glyphosate Ban

Tacy CalliesHerbicides, Legal

The Center for Food Safety on Dec. 13 petitioned the U.S. Environmental Protection Agency (EPA) to immediately suspend and cancel the herbicide glyphosate, the main ingredient in Monsanto’s Roundup. The center filed the petition on behalf of itself, Beyond Pesticides and four farmworker advocacy groups. Last year, in a lawsuit by the same nonprofit organizations, a federal court of appeals struck down …

Steam Aids Herbicide in Goat Weed Control

Tacy Calliesweeds

Using steam and a low dose of herbicide helped control goat weed in citrus better than a higher dose of herbicide, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers found. Goat weed, which poses major challenges for citrus, is found throughout the Southeast — from Texas, east to South Carolina and south to Florida. “It produces many …

New AgTech Expo Looks at Rapidly Moving Sector

Tacy CalliesEvents, Technology

The Gulf Citrus Growers Association and the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Southwest Florida Research and Education Center presented the Florida AgTech and AI Expo in Punta Gorda on Dec. 14. The event showcased emerging trends in technology and how some farms are putting ag technology to work in the real world. In addition to …

CRDF Puts a Bow on a Busy Year

Tacy CalliesCRDF

The Citrus Research and Development Foundation (CRDF) held its final board of directors meeting of the year on Dec. 12. According to Rick Dantzler, CRDF chief operating officer, it was a productive meeting. “We funded projects on plant breeding and evaluation,” Dantzler said. “We also approved research to look for ways to maximize the use of oxytetracycline (OTC) as a …

navel oranges

Congressmen Urge USDA to Buy California Navels

Daniel CooperCalifornia Corner, Fresh

Four California congressmen recently asked U.S. Secretary of Agriculture Thomas Vilsack to have the U.S. Department of Agriculture (USDA) buy $100 million worth of California navels. The orange purchase would help alleviate the impacts of storms. The letter from Congressmen Jim Costa, David Valadao, Doug LaMalfa and Josh Harder follows: We write in support of the Section 32 request submitted …

lebbeck mealybug

New Knowledge on Lebbeck Mealybug Can Aid Control

Daniel CooperPests

Lebbeck mealybug populations are not tied to flush production, entomologist Lauren Diepenbrock reported recently. The University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) assistant professor also noted: Diepenbrock sampled lebbeck mealybug populations in commercial citrus groves in Central Florida. Analysis of the seasonal trapping data provided easily observable trends. Based on these trends, she offers the following initial …

Keller Is CRAFT Scientific Coordinator

Josh McGillCRAFT

The Citrus Research and Field Trial (CRAFT) Foundation recently hired Carisa Keller to serve as the organization’s scientific coordinator. The Highlands County resident previously worked as director of sustainability for Alico. “As CRAFT continues to grow, it’s imperative that we continue to build a team that is ready and able to support the demands of the program,” said CRAFT Executive …

Damage Documentation Tips for Hurricane Season

Josh McGillhurricane

By Matt Smith One of the things I like most about being an Extension agent is getting to work with new growers. Despite all odds, some of these growers are getting into citrus. With hurricane season underway, it’s good for new growers to know — and for established growers to refresh themselves on — how to prepare before a storm …

A Grove-First Approach

Josh McGillHLB Management, Research

In the nearly two decades that huanglongbing (HLB) has plagued Florida citrus groves, about $1 billion has been spent in the search for solutions. A lot of great scientists in Florida and around the world have worked on the problem, and a silver bullet, if there is one to be found, has been elusive. Researchers, along with growers, have developed …

Diseases Without Borders: Leprosis and Yellow Vein Clearing Viruses

Josh McGillDiseases

By Ozgur Batuman Plant virus diseases are unusually difficult to manage if introduced into new production sites. Citrus-infecting viruses, particularly those spread by insect vectors, are no exception to this. Florida is regularly challenged by a barrage of invasive pests and pathogen species that could devastate the citrus industry. Viruses causing citrus leprosis and citrus yellow vein clearing diseases are …

Young Tree Establishment Tools Compared

Josh McGillCitrus Expo, HLB Management

By Ernie Neff New tools available to aid in establishment of young citrus groves all have pros, cons and unknowns, entomologist Lauren Diepenbrock told a Citrus & Specialty Crop Expo audience in August. Diepenbrock is an entomologist and assistant professor with the University of Florida Institute of Food and Agricultural Sciences. She opened her presentation by saying insecticides alone are …

Sallins Receive John T. Lesley Award

Josh McGillAwards

Florida Citrus Packers recently presented IMG Citrus founders Michel and Veronique Sallin with the organization’s highest recognition, the John T. Lesley Award. The presentation was made at the fresh fruit industry’s annual Citrus Packinghouse Day. The award is for individuals making sustained and outstanding contributions to Florida’s fresh citrus industry. IMG Citrus operates more than 11,000 acres of citrus groves …

Wang Appointed to Graves Eminent Scholar Chair

Josh McGillHLB Management, Research

Citrus researcher Nian Wang has been appointed to the Graves Eminent Scholar Chair in Biotechnology at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS). Wang is a professor of microbiology and cell science at the Citrus Research and Education Center (CREC). He was appointed to the chair because of his work to develop a tree resistant to …

Stress Factors and Hurricane-Damaged Trees

Josh McGillhurricane

By Syed Bilal Hussain, Rachel Gearhart, G. Zeng Michalzcyk and Christopher Vincent Hurricane Ian in 2022 caused significant damage to Florida citrus groves. Even groves that experienced only Category 1 winds have begun to decline as the weather has warmed. Signs of canopy decline include branch dieback and leaf drop. Branches with new growth are also experiencing leaf drop. These …

Eliminate Fire Ants to Improve ACP Control

Josh McGillBiologicals, Pests

By Lukasz Stelinski Ants can be involved in mutualistic relationships with honeydew-producing hemipterans. Ants provide protection against their natural enemies, and in return, hemipterans reward ants with honeydew. Such mutualism may affect population regulation of hemipterans by third trophic level predators. However, current knowledge regarding the effects of this food-for-protection mutualism of ants with Asian citrus psyllid (ACP, Diaphorina citri) …