Awareness Campaign Battles HLB in Brazil

Josh McGillBrazil, HLB Management

Brazil’s Fundecitrus in 2022 and 2023 conducted an awareness campaign to replace citrus and myrtle plants to combat HLB in the municipality of Itobi, São Paulo. The citrus and myrtle plants were replaced with other fruit and ornamental species that do not host the Asian citrus psyllid that transmits HLB, also known as greening disease. These citrus and myrtle plants …

Growers Share First Impressions of Trunk Injection

Josh McGillEvents, HLB Management

The Peace River Valley Citrus Growers Association (PRVCGA) hosted growers and industry members on National Orange Juice Day to discuss early experiences with trunk injection of oxytetracycline hydrochloride (OTC-HCl). Two new OTC-HCl products, ReMedium TI and Rectify, were registered this season for use as an HLB treatment in Florida citrus. While some growers are taking a wait-and-see approach to trunk …

Drought and Freeze Don’t Deter Grower

Josh McGillOrganic, Production, Weather

Apopka citrus grower Chip Henry reports that McGuire Groves received 9.5 inches of rain in March 2022. In March 2023, it received less than half an inch. Portions of Lee, Hendy and Collier counties were in an extreme drought as of April 6, according to the U.S. Drought Monitor. Many other areas of Florida, including where McGuire Groves is located, …

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The Advantage of Youth

Josh McGillCRDF

Morgan McKenna Porter brings new energy to the Citrus Research and Development Foundation. By Ernie Neff New Citrus Research and Development Foundation (CRDF) board President Morgan McKenna Porter was born Feb. 29, 1992. There’s only a Feb. 29 every fourth year, a leap year. “So,” she quipped, “CRDF has a seven-year-old president if we go by my leap year age.” …

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Why There Is a Lack of HLB in Georgia

Josh McGillGeorgia, HLB Management

HLB has yet to become a major problem for Georgia’s citrus producers. Jonathan Oliver, University of Georgia assistant professor and small fruits pathologist, attributes the disease’s lack of presence in Georgia’s commercial groves to multiple factors. “It still comes down to the fact that, number one, you don’t see symptoms for a while. A lot of our trees are young,” …

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First HLB Confirmation in City of San Diego

Josh McGillCalifornia Corner, HLB Management, Regulation

The citrus disease HLB has been confirmed for the first time in the city of San Diego, California, making it the second city in San Diego County with a positive detection. (Read about the first San Diego County detection here.) The new detection was made in a residential citrus tree located in the Rancho Bernardo area of the city. The …

Industry Leaders React to Low Forecast

Josh McGillCrop Forecast

Immediately following the lowest federal crop forecast for Florida citrus in many decades, Florida Agriculture Commissioner Nikki Fried and Florida Department of Citrus Executive Director Shannon Shepp expressed optimism that the industry will strive to recover. Their statements referred to Hurricane Ian, which destroyed much fruit and damaged trees in major portions of the state’s citrus belt. The U.S. Department …

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Meet Matt Joyner

Josh McGillFlorida Citrus Mutual

Editor’s note: This Q&A was conducted prior to Hurricane Ian striking Florida. After the storm, Matt Joyner said that Florida Citrus Mutual is working with growers in the recovery process and collecting information to aid in any potential requests for assistance. Matt Joyner started with Florida Citrus Mutual (FCM) in December of 2018 as director of government relations. In April …

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HLB and Canker Incidence Increasing in Brazil

Josh McGillBrazil, Diseases

The average incidence of HLB rose from 22.37% in 2021 to 24.42% in 2022 in Brazil’s citrus belt, an annual survey by Fundecitrus shows. That’s an increase of 9.16%. In the regions of Brotas, Limeira and Porto Ferreira, where the incidence was already high in previous years, HLB increased to even more worrying levels of 49.41%, 70.72% and 74.05%, respectively. …

Searching for Sweet Solutions

Josh McGillOrange Juice, Research

By J. Scott Angle, jangle@ufl.edu, @IFAS_VP Just as HLB can affect fruit flavor, so can our numerous innovations to manage HLB. Yu Wang works to make sure our solutions are sweet. When the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) hired her as a flavor chemist seven years ago, Wang worked primarily with breeders. Her objective was …

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Microregion Maps in Brazil Help With HLB

Josh McGillBrazil, HLB Management, Research

Microregion maps developed by Fundecitrus should help Brazilian citrus growers make the necessary decisions to combat HLB disease, also known as greening. Fundecitrus explained that the incidence of HLB differs in the various regions of Brazil’s extensive citrus belt. To allow citrus growers to better understand the places where the disease is located, a study by Fundecitrus divided the belt …

Florida State Budget and OJ Action Reported

Josh McGillFlorida, Legislative, Orange Juice

In a recent Florida Citrus Mutual (FCM) newsletter, the grower association told how the Florida state budget addresses citrus issues and reported FCM’s position on an orange juice petition.  STRONG SUPPORTThe 2022–23 Florida state budget signed June 2 by Gov. Ron DeSantis totaled $109.9 billion and included more than $37 million in support for the state’s citrus industry. Citrus support …

Use Physical Barriers for Root Health

Josh McGillIPCs, Root health, Tip of the Week

By Larry Duncan Citrus trees in Florida soils infested with diaprepes root weevil (Diaprepes abbreviatus) or sting nematode (Belonolaimus longicaudatus) frequently contend with devastating damage to their root systems. This is made even worse by root loss due to huanglongbing (HLB) disease. Where soil conditions are conducive to the insect or nematode, it is very difficult to prevent major economic …

CRDF Focused on HLB Therapeutics

Josh McGillCRDF, HLB Management

The Citrus Research and Development Foundation (CRDF) held its April board of directors meeting to hear reports on projects involving 2,4-D, gibberellic acid, brassinosteroids and zinc. According to Rick Dantzler, chief operating officer of CRDF, the foundation is conducting a full-court press to study how these materials can combat fruit drop and improve quality. CRDF staff also presented a proposal …

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Consortium Research Aims at HLB

Josh McGillHLB Management, Research

Scientists from the New Mexico Consortium (NMC) say research they have conducted may lead to development of strategies for the control of HLB disease. The research is a collaborative effort between the Gupta laboratory, the NMC and the Stover laboratory at the U.S. Department of Agriculture’s Agricultural Research Service (USDA/ARS). The study focuses on the two putative virulence proteins of …

Foliar Potassium and Boron Can Improve Mandarin Yield and Quality

Josh McGillNutrition

By Tripti Vashisth and Faisal Shahzad Mandarin production has been increasing in Florida since some mandarin varieties can potentially withstand HLB better than sweet orange varieties. Mandarin varieties such as Tango are popular among growers. However, Florida weather poses challenges for the external fruit quality; the peel color is often not satisfactory. Warm night temperatures in fall inhibit chlorophyll breakdown, …

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Researcher: HLB Situation in Brazil Is ‘Alarming’

Josh McGillBrazil, HLB Management

A decrease in the practice of eradicating HLB-infected trees is one of the reasons for increased HLB infections in Brazil, Fundecitrus researcher Renato Bassanezi stated recently. An HLB survey conducted by Fundecitrus pointed to an increase in the incidence of the disease in plants aged six to 10 years and over 10 years for the fifth consecutive year. That shows …

Donaldson Tree Is ‘Beacon of Hope’

Josh McGillFlorida Citrus Commission, HLB Management

A recently discovered HLB-infected tree that is producing high levels of fruit holds hope for Florida’s citrus industry, according to Florida Citrus Commission (FCC) Chairman Steve Johnson. “By now, many of you have heard about the Donaldson tree,” said Johnson. “Recently rediscovered at USDA’s (U.S. Department of Agriculture) Whitmore Farm, this decades-old tree is abundantly producing early-season oranges and despite …

CRDF Funds Fruit Drop Research, Hears Antibiotic Presentations

Josh McGillDiseases, Research

The Citrus Research and Development Foundation (CRDF) governing board on Jan. 25 approved a project aimed at reducing fruit drop by using potassium, zinc, gibberellic acid and the herbicide 2,4-D in different timing scenarios. The funding will allow University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researcher Fernando Alferez to finish two years of work that CRDF Chief …

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Brazil: Production and Planting Projections

Ernie NeffInternational

The U.S. Department of Agriculture’s Foreign Agricultural Service (FAS) recently reported on the citrus industry in Brazil, including updates on orange production, yield, area planted and tree inventory. The orange crop for Brazil’s marketing year 2022-23 is forecast at 405 million 40.8-kg boxes (MBx), equal to 16.52 million metric tons, an increase of 12% relative to the current season. The …