genetic

Improving Citrus Using Genetic Tools

Daniel CooperBreeding

By Manjul Dutt Editor’s Note: This is the first in a series of two articles on plant improvement. Next month will feature the timeline for CRISPR-developed trees. Traditional methods for improving citrus, such as crossbreeding different varieties, can be time-consuming due to the creation of a random mix of genes from both parents through a process called genetic introgression, leading …

grove

What’s Working in Griffin’s Grove

Daniel CooperAll In For Citrus Podcast, Production, Rootstocks, Varieties

Not far from the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Research and Education Center (CREC) in Lake Alfred, Jason Griffin owns and operates a commercial citrus grove. While commercial in nature, the grove also has become a working experiment for the CREC citrus breeders. Griffin has worked closely with UF/IFAS citrus breeder Jude Grosser to …

gift

Gift Fruit Shippers Review Seasonal Strategies

Daniel CooperFlorida Department of Citrus, Fresh, Marketing

On Sept. 30, the Gift Fruit Shippers Advisory Council (GFSAC) held a planning meeting to review and approve marketing activities for the 2025–26 gift fruit shipping season. LAST SEASON Before sharing the recommended strategies for the coming season, Florida Department of Citrus (FDOC) Global Marketing Director Katelynn Long gave a presentation on the previous year’s important milestones and successes. “Last …

HLB management

HLB Management Requires an Integrated Approach

Daniel CooperCitrus Expo, HLB Management

At the recent Citrus & Specialty Crop Expo, Ozgur Batuman reminded seminar attendees there is no silver bullet for HLB management. Instead, the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researcher proposes that growers integrate several tools for the management of HLB. These tools include a variety of ways to control HLB-spreading psyllids; oxytetracycline (OTC) trunk injection; …

study

Study Says 100% Fruit Juice Fills Nutrition Role

Daniel CooperOrange Juice, Research

A recent study reveals that consuming 100% fruit juice is a marker for healthier diet choices and does not displace whole fruit consumption. The study, published in Nutrients on Aug. 21, explored the consumption patterns of 100% fruit juice and diluted juice with the goal of better understanding its relationship to diet quality. Population groups in the study included consideration …

October

Sneak Peek: October 2025 Citrus Industry

Daniel CooperSneak Peek

Breeding efforts to develop citrus trees resistant to HLB are well underway. But how long does the process take before trees are available to growers? Manjul Dutt, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) assistant professor, addresses this question and more in the Citrus Industry section of the October issue of Specialty Crop Grower magazine. His article …

diagnostic

Plant Diagnostic Facilities for Georgia Citrus Growers

Daniel CooperDiseases, Georgia

The University of Georgia (UGA) has disease labs and clinics to help citrus producers determine what diseases are impacting their trees. Jonathan Oliver, UGA assistant professor and small fruits pathologist, highlights the diagnostic facilities that growers can take advantage of. “We have a lab in Tifton, the Plant Disease Clinic, that can accept samples from commercial citrus,” Oliver said. “We …

crop forecast

First Citrus Crop Forecast of the Season Is Oct. 9

Daniel CooperCrop Forecast

After low yields in recent years due to hurricanes and HLB, Florida citrus growers are eager to see what the crop forecast will look like for the 2025–26 season. There is some optimism that the cumulative effects of oxytetracycline trunk-injection treatments may improve production this season. Growers will learn what the initial 2025–26 forecast is when the U.S. Department of …

policy

How To Determine if the Actual Production History Policy Will Be Beneficial

Daniel CooperInsurance, Tip of the Week

By Ariel Singerman Between the 2021–22 and 2023–24 citrus seasons, Florida orange growers were more likely to receive indemnity payments under the Actual Production History (APH) crop insurance policy compared to the Dollar Amount policy. Moreover, when indemnities were paid, the APH policy provided a higher average payout. This raises the question: Will APH continue to be advantageous for Florida orange …

OTC injection

Influence of Rootstock and OTC Injection on Valencia Yield

Daniel CooperHLB Management, Research, Rootstocks

By Kim D. Bowman, Ute Albrecht and Caroline Tardivo Profitability of citrus in Florida has been severely reduced by the impact of huanglongbing disease (HLB). Previous studies have demonstrated that rootstock selection and injection of established trees with oxytetracycline hydrochloride (OTC) can both significantly improve the health, cropping and fruit quality of trees affected by HLB. However, neither a superior …

California

California HLB Quarantine Area Expanded

Daniel CooperDiseases, Regulation

Federal and state officials recently expanded the area quarantined for citrus greening disease, also known as huanglongbing or HLB, in California. They expanded the quarantined area in the San Clemente area of Orange and San Diego counties by 81 square miles. The action was taken by the U.S. Department of Agriculture Animal and Plant Health Inspection Service (APHIS) in cooperation …

Navel

California Navel Orange Forecast Announced

Daniel CooperCalifornia Corner, Crop Forecast

The initial 2025–26 California navel orange forecast is 80 million cartons, up 6% from the previous year. It was issued Sept. 12 by the California Department of Food and Agriculture (CDFA), cooperating with the U.S. Department of Agriculture National Agricultural Statistics Service. The forecast is based on results of the 2025–26 Navel Orange Objective Measurement Survey, conducted from June 12 …

Citrus Achievement Award

Grower Recognizes Citrus Achievement Award Winner

Daniel CooperAwards

Editor’s note: This is the first installment of four articles honoring Ben Albritton, the 2025 Citrus Achievement Award winner. With the 2024–25 citrus season complete, growers are now turning their attention to the coming year. That comes with a new sense of optimism as HLB therapies appear to be improving overall tree health and turning quality and production numbers in …

Blue Goose

PIECES OF THE PAST: True Blue Goose

Daniel CooperPieces of the Past

By Brenda Eubanks Burnette James S. Crutchfield came into the world on a summer day — July 3, 1874 — in the small farming town of Goshen, Kentucky. His folks, Albert and Hatta, worked the land, and that country know-how ran deep in Crutchfield from the start. He got his schooling in Louisville, then set his sights on Florida in …

weeds

The Relationship Between Snails and Weeds Needs Research

Daniel CooperPests, weeds

The preference of Bulimulus bonariensis snails to feed on weeds in citrus groves does not necessarily imply that increased weed management will lead to a reduction in pest populations. This relationship requires further research by Lauren Diepenbrock, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) assistant professor and entomologist. “It’s something I think we really need to look …

Psyllids

Psyllids and HLB Spreading in Georgia

Daniel CooperGeorgia, HLB Management, Psyllids

Populations of Asian citrus psyllids (ACP) have been found in residential and commercial citrus in Georgia’s Lowndes and Wayne counties during the past two months. ACP spread huanglongbing (HLB) disease. In several places where ACP were found, HLB-infected trees were identified nearby. University of Georgia College of Agricultural and Environmental Sciences (UGA CAES) entomologist Apurba Barman provided details about the …

podcast

All In For Citrus Podcast, September 2025

Daniel CooperAll In For Citrus Podcast

Varieties and rootstocks are the topics of the September episode of the All In For Citrus podcast. Earlier this month, a field day was held in Jason Griffin’s grove near Lake Alfred, Florida. He is collaborating with the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) to evaluate several rootstock/scion combinations developed by UF/IFAS citrus breeders. Griffin has …

brown rot

Putting Down Brown Rot

Daniel CooperDiseases, Tip of the Week

By Megan Dewdney Sometimes there is an unfortunate coincidence between the timing of fruit changing color and rain events. This can set up a situation where brown rot occurs unexpectedly and growers need to stop the disease after it has begun. CONTROL OPTIONS By this time of year, the traditional brown rot control measures are less effective. These are primarily …

snail management

Tools Available for Bulimulus Snail Management

Daniel CooperCitrus Expo, Pests

“Bulimulus snail management is an ongoing challenge, but we have some tools to help!” researcher Lauren Diepenbrock stated in her recent Citrus & Specialty Crop Expo presentation. CHALLENGES Diepenbrock, associate professor of entomology at the University of Florida Institute of Food and Agricultural Sciences Citrus Research and Education Center, reported that not every Florida grove is infested with the snails. …

Cantrell

Cantrell Contributes to Knowledge on HLB-Tolerant Rootstocks

Daniel CooperHLB Management, Rootstocks

Ryan Cantrell spent the summer of 2025 as a University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) intern contributing to knowledge about the devastating citrus disease HLB. The undergraduate student worked under the supervision of Assistant Professor Liliana Cano and Biological Scientist Edinson Diaz in the plant pathology laboratory at the Indian River Research and Education Center.  Cantrell …