ReMedium TI®

Starting in the Grove to Find New HLB Therapies

Tacy CalliesHLB Management, Research

By Randall P. Niedz, Guilherme Locatelli, Nick Larson, Lorenzo Rossi, Ellen Cochrane and Michelle Heck Scientists at the U.S. Department of Agriculture-Agricultural Research Service (USDA-ARS) developed an idea to bypass lab assays and test molecules directly in the field for their ability to solve HLB. As part of a USDA National Institute of Food and Agriculture (NIFA) grant (number 2020-70029-33176), …

HLB-Affected Trees Use Less Water

Tacy CalliesHLB Management, Irrigation, Tip of the Week

By Davie Kadyampakeni  Huanglongbing (HLB) is a citrus disease that affects the growth of the fibrous roots of citrus trees. This means that HLB-affected trees may have reduced root volume, which impacts water uptake. A greenhouse study was conducted from October 2019 to July 2021 at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Research and …

Taking a ‘Long Shot’ at HLB-Tolerant Grapefruit

Tacy CalliesCitrus, Grapefruit, HLB Management, Research

A U.S. Department of Agriculture (USDA) scientist and his team are hopeful that some so-called “long-shot” varieties will pay off in the effort to find HLB-tolerant grapefruit. Matthew Mattia of the USDA Agricultural Research Services (ARS) U.S. Horticultural Research Laboratory in Fort Pierce, Florida, found the varieties at the A.H. Whitmore Foundation Farm in Groveland, Florida. The varieties are Florida …

New Center to Accelerate HLB Solutions

Tacy CalliesBreeding, Technology

By J. Scott Angle, jangle@ufl.edu, @IFAS_VP My job is to help you make money. By changing the way the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) does business in pursuing citrus solutions, I hope to change your business for the better. We’ve just launched a UF/IFAS Crop Transformation Center (CTC). It has the potential to speed delivery …

Studying the Mechanisms for HLB Tolerance

Tacy CalliesAll In For Citrus Podcast, Research, Varieties

John Chater has been on the job now for two years, working with growers to evaluate variety performance in field trials. In the latest All In For Citrus podcast episode, the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) assistant professor discusses his work, including grower collaboration to study new varieties in real-world environments. Chater also talks about …

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 …

California Researchers Seek HLB Tolerance

Tacy CalliesCalifornia Corner, HLB Management, Research

University of California, Riverside (UCR) has received three federal grants totaling more than $11 million for research focused on instilling HLB-tolerance in citrus trees. The grants are from the U.S. Department of Agriculture’s (USDA) National Institute of Food and Agriculture (NIFA). The funding was enabled by the 2018 Agricultural Improvement Act, which authorized the Emergency Citrus Disease Research and Development …

Mulch Suppresses Psyllids in Young Trees 

Tacy CalliesPsyllids, Tip of the Week

By Jawwad A. Qureshi, Lauren Diepenbrock and Davie Kadyampakeni  Protecting citrus trees from the Asian citrus psyllid (ACP) is critical to reducing the spread and severity of huanglongbing (HLB) disease. The frequent availability of viable shoots in young trees is attractive to psyllid colonization, feeding and oviposition events. UV-metalized reflective mulches reflect ultraviolet light, which is disturbing for some insects …

Food Traceability Rule: Overview and Requirements

Tacy CalliesFood Safety, Regulation

By Clara Diekman and Michelle Danyluk The Food Traceability Rule (FTR) is a federal regulation that establishes recordkeeping requirements for persons who manufacture, process, pack or hold foods on the Food Traceability List (FTL). The goal of this rule is to help the U.S. Food and Drug Administration (FDA) identify and remove potentially contaminated food from the market more rapidly, …

Mexico Expects Citrus Crop Increases

Tacy CalliesInternational, Production

Mexico’s Ministry of Agriculture and Rural Development recently reported that Mexico produced more than 8 million tons of lemons, oranges and grapefruit in 2022. It stated that Mexico was in second, third and fourth place in world production of lemons, grapefruit and oranges, respectively. The ministry also pointed out many of the health benefits of consuming citrus. LEMONSFigures from the …

acreage

New Neonicotinoid Regulations in California

Tacy CalliesCalifornia Corner, Pesticides, Regulation

The California Department of Pesticide Regulation (CDPR) has adopted new regulations to protect pollinators from the hazards associated with exposure to neonicotinoid pesticides containing the active ingredients clothianidin, dinotefuran, imidacloprid and thiamethoxam. The regulations affect the application of these pesticides on certain food and feed crops, including citrus. Product labels will not be updated with these requirements. CDPR suggests that …

citrus

All In For Citrus Podcast, December 2023

Tacy CalliesAll In For Citrus Podcast

In the December episode of the All In For Citrus podcast, Michael Rogers, director of the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Research and Education Center (CREC), gave a tip of the hat and congratulations to Ruth Borger who retired this fall. Borger was the CREC communications specialist. She transitioned to this position after eight …

Sneak Peek: January 2024 Citrus Industry

Tacy CalliesSneak Peek

The January issue of Citrus Industry magazine rings in the new year with positive news! Find out how one Florida grower is producing up to 500 boxes per acre. Matt Machata tells how he rehabilitated his family’s groves in Lake Wales. He shares the details of his dry fertilizer and foliar application schedules. Attention to nutrition, irrigation and soil health …

Ag Employers Want H-2A Wage Methodology Amended

Tacy CalliesLabor

The National Council of Agricultural Employers (NCAE) has petitioned Acting Department of Labor Secretary Julie Su to amend the regulatory methodology for determining adverse effect wage rates in the H-2A temporary agricultural worker program. “America’s farm and ranch families and American consumers continue to bear the brunt of the Department of Labor’s (DOL) misuse of the U.S. Department of Agriculture’s …

A Tool to Help Assess Tree Health

Tacy CalliesTip of the Week

By Tripti Vashisth, Taylor Livingston and Jamie Burrow Canopy density is one of the most effective measurements to assess tree health of HLB-affected trees. Canopy density accurately distinguished between high and low fruit-producing trees in field trials, whereas CLas Ct value has been found to not be correlated with fruit yield. Many new tools such as nutrient management guidelines, plant …

Bud Advisories Help Growers Time Psyllid Sprays

Tacy CalliesIndustry News Release

The University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) is reminding citrus growers that flower bud advisories are now being issued. The UF/IFAS advisories can help growers determine when to spray for HLB-spreading Asian citrus psyllids and when to stop spraying in an effort to protect pollinating bees. Tripti Vashisth, a UF/IFAS associate professor of horticultural sciences, will …

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 …

texas

Alabama Designated as Commercial Citrus Producer

Tacy CalliesDiseases, Regulation

The U.S. Department of Agriculture Animal and Plant Health Inspection Service (USDA APHIS) announced it has designated Alabama as a commercial citrus-producing area. This action provides Alabama with protections that are afforded under the citrus canker regulations applying to commercial citrus-producing states. USDA APHIS regulates the interstate movement of certain plants, plant parts and other articles from areas of the …

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 …