Integrating Use of Organic Soil Amendments and Weed Management

Josh McGillSoil Health, weeds

By Ute Albrecht, Ankit Pokhrel, Sarah Strauss and Ramdas Kanissery The soils in most Florida citrus production areas are sandy. They have less than 1% organic matter and a low cation exchange capacity (CEC). This makes them prone to nutrient leaching, especially after heavy rainfall events in the summer. HUMIC SUBSTANCESOne way to improve soils is by amending them with …

Know Your Purpose for Pruning

Josh McGillPruning

“Don’t prune if you do not know why you are pruning,” University of California Cooperative Extension’s Craig Kallsen cautioned in a June 6 webinar about pruning navel oranges. “It’s a lot of work and thus expensive.” “Generally, pruning of any kind reduces total fruit yield,” the citrus and pistachio farm advisor for Kern County stated. “The goal of pruning is …

HLB Researcher Honored

Josh McGillAwards, Brazil

Fundecitrus researcher Marcelo Pedreira de Miranda has received the Outstanding Citriculture Engineer-Agronomist Award from the 48th Expocitrus and 44th Citriculture Week. The Brazilian entomologist, whose main studies are related to HLB, has worked at Fundecitrus since 2008. The award ceremony where Miranda was honored was part of the opening afternoon of the exhibition week and was attended by authorities and …

Chilean Orange Production to Climb

Josh McGillCrop Forecast, International

Orange production in Chile will increase by 6.1% and total 174,000 metric tons (MT) in 2022–23, the U.S. Department of Agriculture Foreign Agricultural Service (USDA FAS) estimated recently. Yields are up due to increased rainfall and no damage from frost. ACREAGEIn 2022–23, orange area planted in Chile totaled 6,362 hectares, unchanged from 2021–22. The total orange area planted has remained …

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Psyllids Resistant to Insecticides in Brazil

Josh McGillBrazil, HLB Management

Psyllids collected in orchards in four microregions of Brazil’s citrus belt showed reduced susceptibility to insecticides from the pyrethroid and neonicotinoid chemical groups. That information was reported earlier this year by agronomist and researcher Fernando Amaral of the Arthropod Resistance Laboratory at the Luiz de Queiroz College of Agriculture/University of São Paulo (ESALQ/USP). This was the first confirmation of psyllid …

New Dignity Act Aims to Reform Immigration and H-2A

Josh McGillLabor, Legislative

Bipartisan members of Congress led by Representatives María Elvira Salazar of Florida and Veronica Escobar of Texas on May 23 introduced an updated version of the Dignity Act (H.R. 3599). The act would reform immigration laws and streamline the H-2A program for temporary foreign workers.  The bill would aim to stop illegal immigration, provide a dignified solution for undocumented immigrants living in America and strengthen …

Sting Nematode Problematic for Young Trees

Josh McGillPests

The sting nematode is the most serious nematode problem in young citrus groves, nematologist Larry Duncan reported at the Florida Citrus Growers’ Institute in April. According to Duncan, long before HLB, the sting nematode was widely encountered in groves on Florida’s Central Ridge and in Polk County. The University of Florida Institute of Food and Agricultural Sciences professor said tree …

Colorado State University Updates Hurricane Forecast

Josh McGillhurricane, Weather

Colorado State University (CSU) hurricane researchers on June 1 increased their Atlantic hurricane forecast. They are now predicting a near-average 2023 Atlantic hurricane season. The CSU Tropical Meteorology Project team is predicting 15 named storms during the Atlantic hurricane season. That’s 14 anticipated storms in addition to a subtropical storm that the National Hurricane Center says formed in January. Of …

Millennium Block and MAC Project Updates

Josh McGillResearch, Rootstocks, Varieties

Hurricanes Ian and Nicole in 2022 caused early fruit drop in the Indian River area, where two studies of 39,000 trees that might tolerate HLB are being conducted. Researchers now expect significant data from the studies will come after the 2023, 2024 and 2025 season harvests, but they have already gained some insights from the projects.  The first experimental grove, …

Nominate a Worthy Woman in Florida Agriculture

Josh McGillAwards

Nominations for the Woman of the Year in Agriculture Award, sponsored by the Florida Department of Agriculture and Consumer Services (FDACS) in conjunction with the Florida State Fair Authority, are now being accepted. All nominations must be submitted by Aug. 1. The award annually recognizes the achievements of women who have made outstanding contributions to Florida agriculture. “The Woman of …

Assistance for 2022 Natural Disasters Announced

Josh McGillfinancial, hurricane

U.S. Agriculture Secretary Tom Vilsack recently announced two programs that collectively provide $3.7 billion in assistance to crop and livestock producers who sustained losses due to natural disasters like Hurricanes Ian and Nicole in 2022. They are the Emergency Relief Program (ERP) and Emergency Livestock Relief Program. To participate in the programs, producers should have or be prepared to have the …

NOAA Predicts Near-Normal Hurricane Season

Josh McGillhurricane, Weather

National Oceanic & Atmospheric Administration (NOAA) forecasters with the Climate Prediction Center, a division of the National Weather Service, predict near-normal hurricane activity this year. NOAA’s outlook for the 2023 Atlantic hurricane season, which lasts from June 1 to Nov. 30, predicts a 40% chance of a near-normal season, a 30% chance of an above-normal season and a 30% chance …

Antibiotics, HLB and Psyllids

Josh McGillHLB Management, Pests

Entomologist Kirsten Pelz-Stelinski recently shared findings from trials on the use of foliar-applied and trunk-injected antibiotics for controlling HLB and the Asian citrus psyllids (ACP) that spread the disease. Pelz-Stelinski is associate center director at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Research and Education Center (CREC) in Lake Alfred.  In a May 17 presentation …

Valencia on US-942 Rootstock Is Favored Florida Tree

Josh McGillRootstocks, Varieties

For at least the last four years, the Valencia SPB-1-14-19 orange has been the most-produced citrus variety in Florida, and US-942 has been the favored rootstock. So, it makes sense that the Valencia SPB-1-14-19 on US-942 rootstock has been the most-produced tree combination for four years running. That information was provided at April’s Florida Citrus Growers’ Institute in Avon Park …

HLB in Florida Is a Warning to California

Josh McGillCalifornia Corner, HLB Management

The damage that HLB has inflicted on Florida citrus groves and production over the past 18 years should serve as a warning for California producers, California’s Citrus Pest & Disease Prevention Program (CPDPP) stated recently. CPDPP noted that with HLB detected in thousands of California residential trees, it’s important for commercial growers to take steps to prevent the disease. According …

Repurposing Tools to Tackle HLB

Josh McGillHLB Management

By J. Scott Angle, jangle@ufl.edu, @IFAS_VP The hurricane-battered harvest numbers don’t show it, but we’re in a much better place in developing scientific solutions for managing HLB than we were a year ago. That’s because our scientists have discovered that tools invented to solve other problems can help address your one big problem. GIBBERELLIC ACIDFor example, gibberellic acid (GA) has …

Questions Remain on Cover Crops and Compost

Josh McGillSoil Health

Cover crops and compost can impact soil microbes in citrus groves, and that’s generally considered a good sign, soil microbiologist Sarah Strauss said in a virtual May 24 seminar. Microbes are critical components of soil health through their contributions to soil organic matter, nutrient cycling and plant defenses. But the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) …

PIECES OF THE PAST: A Granddaughter’s Recollections

Josh McGillPieces of the Past

By Brenda Eubanks Burnette Editor’s note: Last month’s Pieces of the Past featured Edward Postell Porcher, one of the original Florida Citrus Hall of Fame inductees. This month, his granddaughter shares more memories about him and the citrus industry. Edward Postell Porcher’s granddaughter, Norris Porcher Andrews, was interviewed by Nancy Yasecko at the Porcher House in 1994 for the Brevard …

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 …