Minimize Mite Pressure in Citrus

Josh McGill Pests

Hot temperatures and dry conditions in some parts of the Southeast add up to ideal conditions for mite populations to increase in citrus groves. Lauren Diepenbrock, University of Florida Institute of Food and Agricultural Sciences assistant professor and entomologist, said citrus can tolerate some spider mite pressure. Increased pressure, though, can leave an impact. “You can handle some amount of …

Snails Moving Into Young Trees and Covers

Josh McGill Florida, Pests

Some species of snails in Florida groves, normally seen on irrigation emitters and tree trunks, have recently “taken up residency in young citrus trees,” University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Extension agents Chris Oswalt and Ajia Paolillo reported. Here’s a summary of what the agents wrote in a recent UF/IFAS Central Florida citrus Extension newsletter: Once …

USDA to Enforce Imported Grapefruit Standards

Josh McGill Grapefruit, Regulation

The U.S. Department of Agriculture (USDA) announced it will enforce the juice content maturity requirements on imported grapefruit. USDA will also collect the necessary data to issue a new and lasting marketing order regarding the imported grapefruit. Last fall, the USDA suspended Section 8e grapefruit juice content standards for imported grapefruit without warning. As a result, low-quality grapefruit products from …

Australia Tests Psyllid Monitoring System

Josh McGill International, Psyllids

A new airborne insect monitoring system that has been tested in a field trial at Midura, Australia, should assist in monitoring for African and Asian citrus psyllids, which transmit HLB. The trial was conducted by Agriculture Victoria in conjunction with Citrus Australia and had two main purposes. One purpose was to test the sampling ability of the monitoring system against …

Lower Lead Levels in Juice Recommended

Josh McGill Food Safety, Orange Juice

The U.S. Food and Drug Administration (FDA) has recommended lower lead limits for juice. The recommended limit is currently 50 parts per billion (ppb). New draft action levels would be 10 ppb for lead in single-strength apple juice and 20 ppb for lead in all other single-strength juice types. The FDA estimates that establishing a 10-ppb action level could result …

production

European Lemon Crop Down; Grapefruit Up

Josh McGill Grapefruit, International, lemons

The European Union (EU) lemon crop for 2021–22 is expected to decline from the previous season while its grapefruit crop is projected to rise. LEMONEU lemon production is forecast at 1.5 million metric tons (MMT), down from the 1.7 MMT estimated for the previous season. Spain is the EU’s largest lemon producer and accounts for nearly 65% of EU production. …

hlb

Liberibacter Relative Mutating Rapidly

Josh McGill Brazil, Diseases

A bacterial species closely related to citrus greening disease is rapidly evolving its ability to infect insect hosts and possibly plants. The newly identified species belongs to Liberibacter, a family of bacteria known to infect several economically important crops. There are nine known Liberibacter species, including three that are associated with citrus greening.  Citrus greening, also known as huanglongbing or …

New Finger Lime Cultivars for the Specialty Citrus Market

Josh McGill Limes, Tip of the Week, Varieties

By Manjul Dutt The finger lime is an HLB-tolerant Australian native citrus that has been gaining popularity and importance in the last few years. Finger lime has several unique fruit qualities that set it apart from conventional sweet oranges and mandarins. The primary characteristic of this fruit is the round to teardrop-shaped juice vesicles, known as “citrus caviar,” that burst …

Florida Citrus Hall of Fame Ceremonies to Be Oct. 14

Josh McGill Awards, Events

The 2022 Florida Citrus Hall of Fame induction ceremonies will be held Friday, Oct. 14 from 11:30 a.m. to 1:30 p.m. at Florida Southern College’s (FSC) George W. Jenkins Fieldhouse. The college is at 111 Lake Hollingsworth Drive in Lakeland.  The event is sponsored by Florida Citrus Mutual, the Florida Department of Citrus and the Florida Citrus Hall of Fame, …

Citrus Industry Weighs In on Oxytetracycline Trunk Injection

Josh McGill HLB Management, Pesticides

Trunk injection of oxytetracycline (OTC) has been proposed as a means to manage HLB in citrus. University of Florida research shows OTC injections increase yield and fruit quality but cause tree injury. TJ BioTech expects to receive EPA registration in late fall of this year for an OTC product that could be injected into trees. Florida citrus industry growers and …

A Two-Pronged Approach to Suppress Psyllids

Josh McGill HLB Management, Psyllids, Research

By Bryony C. Bonning and Lukasz L. Stelinski Asian citrus psyllids (ACP) transfer the pathogen that causes citrus greening from plant to plant as they feed. After confirmation of citrus greening in Florida in 2005, growers intensified their use of insecticides against ACP to try to stop disease spread. However, this method alone has yielded variable success and increased costs. …

Water Shortage Is Latest Texas Citrus Concern

Josh McGill Texas, Water

A little more than 20 inches of rain has fallen on Dale Murden’s Texas grapefruit grove in 2022 — “about average for the year,” he says. But the majority of Texas is in severe drought, and that poses problems for Murden and other Texas growers, especially for the future. “We just are not seeing any rain or significant inflows in …

Georgia Growers: Look Out for Lebbeck Mealybug

Josh McGill Georgia, Pests

University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) specialists are alerting Georgia citrus growers about an invasive pest that’s impacting Florida’s crop. Lebbeck mealybugs have yet to navigate their way to Georgia. But it is only a matter of time, says Lauren Diepenbrock, UF/IFAS assistant professor and entomologist. “It’ll get up to Georgia probably. We’re doing our best …

Florida Citrus Commissioners Reappointed

Josh McGill Florida Citrus Commission, Florida Department of Citrus

Gov. Ron DeSantis on Aug. 5 announced the reappointment of the nine members of the Florida Citrus Commission. They are: CHRISTOPHER GROOMGroom is chief operating officer of Florida’s Natural Growers. He serves as vice president and treasurer of Florida’s Natural Growers Foundation. Groom earned his bachelor’s degree in economics and Hispanic studies from Northwestern University and his master’s degree in …

dorian

Slight Decrease in Hurricane Outlook

Josh McGill hurricane, Weather

On Aug. 4, the National Oceanic and Atmospheric Administration (NOAA) slightly decreased the likelihood of an above-normal Atlantic hurricane season to 60%. That is down from 65% in the initial NOAA outlook issued in May. The likelihood of near-normal activity has risen to 30% from 25% in May, and the chances remain at 10% for a below-normal season. NOAA’s update …

European Mandarin Production to Drop

Josh McGill International, Mandarins, Production

European Union (EU) mandarin production in 2021–22 is forecast at 3.16 million metric tons (MMT), a 2.3% decrease from the previous year, the U.S. Department of Agriculture’s Foreign Agricultural Service (FAS) recently reported. Spain will be the largest EU producer of mandarins in 2021–22 at 2.1 MMT, down from 2.3 MMT the prior year. Italy’s expected mandarin production of 832,300 …

Coordinated Psyllid Treatment Recommended in California

Josh McGill California Corner, Pesticides, Psyllids

The San Joaquin Valley ACP (Asian citrus psyllid)/HLB Area-Wide Task Force in California is recommending growers participate in a coordinated treatment application in commercial citrus orchards. This recommendation is for orchards located east and south of Bakersfield and includes young, non-bearing trees. The recommendation comes as a result of higher than normal HLB-spreading ACP finds in traps earlier this summer. …