zinc

Zinc Increases Yield by Reducing Fruit Drop

Daniel CooperFruit Drop, HLB Management, Nutrition

Different formulations of zinc applied by foliar spray increase fruit yield by reducing fruit drop in Hamlin and Valencia oranges, according to horticulturist Fernando Alferez. In some cases, he said, potassium enhances the beneficial effects of zinc. Alferez is a University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) associate professor at the Southwest Florida Research and Education Center …

HLB-affected trees

Frequent Irrigation Is Critical for HLB-Affected Trees

Daniel CooperHLB Management, Irrigation, Tip of the Week

By Tripti Vashisth and Mary Sutton HLB-affected trees have small and weak root systems. These trees often experience water and nutrient deficit. However, not all HLB-affected trees experience the same impact. Trees with severe HLB symptoms will have higher root loss and water deficit than trees with mild HLB symptoms. The water deficit exacerbates during spring, which is often the …

satsuma

Why Some Citrus Growers Are Removing Satsuma Trees

Daniel CooperCold Hardy, Mandarins

Satsuma mandarins are easily produced in the cold-hardy citrus region. But their lack of shelf life is causing multiple growers in the region, which includes North Florida and South Georgia, to pull trees in favor of something else. Those growers includes Lindy Savelle, executive director of the Georgia Citrus Association. She’s removing 400 of 1,000 satsuma trees, or about 40% …

HLB-tolerant varieties

Options for Planting Profitable Citrus Varieties

Daniel CooperBreeding, Rootstocks, Varieties

By Maegan Beatty On Feb. 18, Jude Grosser and Fred Gmitter hosted an online informational session on new citrus varieties and how to plant a profitable crop in the future. Both Grosser and Gmitter are part of the citrus improvement team at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Research and Education Center. Their main …

june

All In For Citrus Podcast, February 2025

Daniel CooperAll In For Citrus Podcast

In the February episode of the All In For Citrus podcast, Michael Rogers provides an update on activities at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Research and Education Center in Lake Alfred. He said the beginning of the year is the time when current and future projects are evaluated. “The months of February and …

dry

New Citrus BMP Manual Near Adoption

Daniel CooperBMPs

In the past year, the Florida Department of Agriculture and Consumer Services (FDACS) undertook a significant effort to update all the state’s agricultural best management practices (BMPs) manuals. Many of these manuals had not been updated for over a decade. FDACS updated the manuals to: For the citrus BMP manual, the notice of change was published in the Florida Administrative …

cold-hardy citrus

Cold-Hardy Citrus Crop Outlook for 2025

Daniel CooperCold Hardy, freeze

Growers in the cold-hardy citrus region enjoyed a bountiful crop in 2024. Unfortunately, that is not expected to be the case in 2025. Lindy Savelle, executive director of the Georgia Citrus Association, said the expected drop in volume is due to multiple factors, including the winter storm last month that brought historic snowfall and sub-freezing temperatures over multiple days. But …

Vegetable Seminar Program Available

Daniel CooperEducation, Events, FCS24, Florida Citrus Show

With expanding vegetable acreage in parts of South Florida, the Florida Citrus Show now hosts a special vegetable breakout seminar to serve growers in the region. The researchers at the University of Florida Institute of Food and Agricultural Sciences and U.S. Department of Agriculture have put together an informative agenda covering a wide range of topics. Some of the subjects …

new varieties

CITRUS NURSERY SOURCE: New Varieties Released

Daniel CooperCitrus Nursery Source, Varieties

By Peter Chaires On October 24, 2024, the University of Florida’s (UF) Cultivar Release Committee unanimously approved the release of seven citrus varieties to Florida Foundation Seed Producers, Inc. Florida Statutes now require that, before being released to the general public, any new variety of citrus developed as a result of any research or study accomplished using any percentage of …

Alico

Alico: Production Down, Prices Up

Daniel CooperProduction

Alico, Inc., which will cease citrus production after this season, reported its citrus harvest declined in the three months ending Dec. 31, 2024 compared to the same period a year earlier. For those three months, Alico Citrus harvested approximately 4 million pound solids of fruit, compared to 4.7 million pound solids in the same period in the prior fiscal year. …

environmental

Nominate Ag Women and Environmental Leaders

Daniel CooperAwards

The Florida Department of Agriculture and Consumer Services (FDACS) has announced the opening of the nomination process for the Woman of the Year in Agriculture and the Agricultural-Environmental Leadership awards. Nominations for both awards must be submitted by March 1. “Florida agriculture thrives because of the extraordinary people who dedicate their lives to it,” said Florida Agriculture Commissioner Wilton Simpson. …

silicon

Citrus Nutrition Day Explores Benefits of Silicon

Daniel CooperNutrition

The University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) hosted its annual Citrus Nutrition Day in January at the Citrus Research and Education Center in Lake Alfred. The event was well attended and covered various fertilizer and nutrition topics. Muhammad Adnan Shahid, UF/IFAS assistant professor of horticulture, presented his ongoing research on the use of silicon as a …

Brix

Brix Bill Reintroduced

Daniel CooperLegislative

U.S. representatives from Florida have reintroduced legislation to have the U.S. Food and Drug Administration (FDA) alter the Brix standard in not-from-concentrate pasteurized orange juice from 10.5% to 10%. The Defending Domestic Orange Juice Production Act was reintroduced by Reps. Scott Franklin and Debbie Wasserman Schultz and is cosponsored by the entire Florida congressional delegation.  Currently, oranges below the 10.5% …

brassinosteroids

When to Apply Brassinosteroids to Improve Valencia Fruit Quality

Daniel CooperPGRs, Tip of the Week

By Fernando Alferez and Divya Aryal Like the work being done with Hamlin sweet orange, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers are studying the effect of brassinosteroids (BRs) on the internal maturation of Valencia sweet orange fruits. The conditions of the treatments are the same as in Hamlin: A treatment of 186 milliliters of BR …

survey

Survey Shows Popular Scions and Rootstocks

Daniel CooperRootstocks, Survey, Varieties

The Florida Citrus State of the Industry Survey seeks input from growers on key issues affecting their groves. The survey has been conducted for many years, has tracked the trajectory of HLB and reported on production practices. While not a scientific survey, it has reflected general trends over the years. Last month, we published results on trunk-injection therapy and the …

Crop Transformation Center

Crop Transformation Center in Full Swing

Daniel CooperBreeding, HLB Management

By J. Scott Angle, jangle@ufl.edu, @IFAS_VP About 18 months ago, Matt Joyner, Kyle Story, Morgan McKenna Porter, Emery Smith and other Florida citrus leaders visited me in Gainesville. Together, we shaped an idea to accelerate our search for solutions to HLB. The idea is already reality. The University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Crop Transformation Center …

Degreening

Seeking Better Degreening Methods for Fresh Citrus

Daniel CooperFresh, Research

Two University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) scientists reported on research into more effective and environmentally friendly degreening methods for fresh citrus. They are Muhammad Shahid and Muhammad Nadeem, assistant professor of horticulture and postdoc scholar, respectively, at the UF/IFAS North Florida Research and Education Center (NFREC). Edited excerpts follow: Some varieties of citrus fruit, even …

Texas citrus

Texas Citrus Industry Assessing Freeze Damage

Daniel Cooperfreeze, Texas

By Maegan Beatty  Across the United States, farmers have faced freezing temperatures, snowstorms and unpredictable conditions this winter. Texas citrus growers are among those evaluating the effects of the most recent temperature drop.   “In regard to growers experiencing damage, we are still assessing,” said Dale Murden, president of Texas Citrus Mutual. “It’s too early to tell overall, but we will …

temperature inversion

Temperature Inversion: Not a Friend of Pesticide Applicators

Daniel CooperCEU, Pesticides

By Wael Elwakil Editor’s note: This article grants one continuing education unit (CEU) in the Core category toward the renewal of a Florida Department of Agriculture and Consumer Services restricted-use pesticide license when the accompanying test is submitted and approved. Temperature inversion is a weather phenomenon that alters the natural air movement in the lower layer of the atmosphere (troposphere). …

oxytetracycline

Lessons From Oxytetracycline Injection Trials

Daniel CooperHLB Management

By Ute Albrecht, Carol Tardivo, Gabriel Pugina, Larissa Nunes, Jasmine de Freitas and Gerardo Moreno Since the approval of oxytetracycline (OTC) injection to manage citrus greening (huanglongbing, HLB) in Florida, the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) plant physiology team at the Southwest Florida Research and Education Center (SWFREC) has completed various research trials with multiple …