Florida Citrus Acreage Takes a Hit

Josh McGillAcreage, Florida

Total citrus acreage in Florida dropped 8% in the past year, to 375,302 acres, according to the Commercial Citrus Inventory Preliminary Report. The report was released Sept. 7 by the U.S. Department of Agriculture’s National Agricultural Statistics Service. The net loss of 32,046 acres is 19,942 acres more than was lost the previous season. New plantings, at 7,980 acres, are …

High-Efficiency Fertilizers for Growers

Josh McGillCitrus Expo, Nutrition

At the Citrus & Specialty Crop Expo, Davie Kadyampakeni recommended what he termed “high-efficiency fertilizers” to improve canopy, fruit yield and juice quality, especially in HLB-affected trees. Kadyampakeni is an assistant professor specializing in citrus water and nutrient management the University of Florida Institute of Food and Agricultural Sciences. FOUR TYPESKadyampakeni described four categories of high-efficiency fertilizers: Slow-release fertilizer (SRF) …

Dundee to Double CUPS Acreage

Josh McGillCUPS

Dundee Citrus Growers Association (CGA) and its members will more than double the area growing fresh citrus under protective screen (CUPS) with the addition of a second CUPS project. The new project will be located in southern Polk County, just east of Fort Meade. “Once fully developed, the 622-acre parcel will contain approximately 500 acres of CUPS … bringing our …

Politics of Water Addressed at Expo

Josh McGillCitrus Expo, Nutrition, Water

Citrus growers have been watching developments with water regulation closely in recent years. The 2022 Florida legislative session addressed some issues that had developed with the state’s best management practices (BMPs) program. Ernie Barnett, president of the Florida Land Council, gave Citrus & Specialty Crop Expo attendees a recap of the BMPs changes and provided a big-picture perspective of the …

Controlling Diplodia SER on Grapefruit

Josh McGillDiseases, Grapefruit

Studies that show some potential for control of Diplodia stem-end rot (SER) on fresh grapefruit were discussed at the recent Citrus Packinghouse Day. University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researcher Mark Ritenour made the presentation. Ritenour works as a professor of postharvest physiology and management at the Indian River Research and Education Center in Fort Pierce. …

Fire Ant Control Aids Psyllid Management

Josh McGillCitrus Expo, HLB Management, Pests

Controlling fire ants in groves aids in the control of HLB-spreading Asian citrus psyllids (ACP), entomologist Lukasz Stelinski reported at the Citrus & Specialty Crop Expo. Fire ant control was just one way that Stelinski suggested for growers to manage ACP while reducing costs. The University of Florida Institute of Food and Agricultural Sciences entomologist said ACP populations drop when …

Optimizing Gibberellic Acid Applications in Florida Citrus

Josh McGillFruit Drop, HLB Management

Tripti Vashisth, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) associate professor of horticultural sciences, has dedicated several years of research into the use of plant growth regulators like gibberellic acid (GA) to fight fruit drop in citrus. In the August All In For Citrus Podcast, Michael Rogers, director of the UF/IFAS Citrus Research and Education Center, interviewed …

A Shift Toward Soil Microbes in Young Citrus Tree Care

Josh McGillCitrus, Sponsored Content

SUMMARY: Many Florida citrus growers have made the decision to shift their focus away from saving older HLB-infected trees and toward protecting and strengthening young citrus trees, using soil probiotics, before too much damage is done. Understanding citrus trees’ vascular systemsCitrus trees have developed a complex but effective circulatory system for the uptake, storage, and utilization of water and nutrients. …

Combined Treatment Reduced Drop and Increased Size

Josh McGillFruit Drop, HLB Management, Production

A combination of gibberellic acid (GA) and 2,4-D reduced preharvest fruit drop by 18% and improved fruit size but produced no statistical effect on yield, researcher Tripti Vashisth reported Aug. 30. The combination “seems promising,” the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) horticulturist stated. The report was based on first year results from a trial of …

Nurseries Approved for Expedited Propagation Program

Josh McGillFlorida Citrus Commission, Florida Department of Citrus, nurseries

The Florida Citrus Commission (FCC) on Aug. 24 approved agreements with 25 nurseries for the Program for Expedited Propagation of HLB Tolerant and Resistant Trees. The nurseries are: Agromillora Florida Inc. Ben Hill Griffin Inc. Blue Heron Nurseries LLC Brewer Citrus LLC Brite Leaf Citrus Nursery LLC Citrific Holdings Inc. CitriSun Nurseries LLC Cutrale Farms Inc. Dilley Citrus Nursery Inc. …

Psyllid Management Alert for Brazil

Josh McGillBrazil, HLB Management, Psyllids

The onset of rains in several regions of Brazil’s citrus belt has made it necessary for growers to pay added attention to citrus greening, Fundecitrus reported. The association of citrus growers and juice manufacturers from the state of São Paulo said the extra attention is needed due to the increase in greening-spreading psyllid populations in this period. Fundectirus reported that …

What to Do About Three Florida Citrus Pests

Josh McGillCitrus Expo, Pests

Entomologist Lauren Diepenbrock discussed control of three pests — lebbeck mealybug, Bulimulus sporadicus snails and diaprepes root weevils — at the recent Citrus & Specialty Crop Expo. The University of Florida Institute of Food and Agricultural Sciences researcher described the mealybug and snails as “new pest challenges” and diaprepes as the resurgence of an old pest. LEBBECK MEALYBUGLebbeck mealybug was …

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All In For Citrus Podcast, August 2022

Josh McGillAll In For Citrus Podcast, Fruit Drop, HLB Management

The August episode of the All In For Citrus podcast takes listeners on a deep dive into the use of plant growth regulators like gibberellic acid (GA) to help fight fruit drop. The episode features an in-depth conversation between Michael Rogers, director of the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Research and Education Center, and …

Using Technology to Support Citrus Management Decisions

Josh McGillTechnology

By Yiannis Ampatzidis and Sandra M. Guzmán Pests and diseases, nutrient deficiencies, tree stress from environmental conditions and other factors can be overwhelming. The arrival of sensors and small unmanned aerial vehicles (UAVs) make it possible to gather large amounts of data to assess risk factors and estimate possible crop performance scenarios based on the availability of resources. At the …

Australia Tests Psyllid Monitoring System

Josh McGillInternational, 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 …

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Liberibacter Relative Mutating Rapidly

Josh McGillBrazil, 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 McGillLimes, 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 …

Citrus Industry Weighs In on Oxytetracycline Trunk Injection

Josh McGillHLB 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 …