field day

Millennium Block Field Day Set for Nov. 6

Daniel CooperEvents, Indian River, Varieties

The University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Indian River Research and Education Center (IRREC) will host its annual Millennium Block Field Day Nov. 6 from 9 a.m. to noon. The field day will showcase the center’s emphasis on research to find a solution to citrus greening disease. The IRREC is located at 2199 South Rock Road …

bed system

Bed System Benefits Citrus Production

Daniel CooperCold Hardy, Production

A bed system used in citrus groves is still under research at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) North Florida Research and Education Center (NFREC) in Quincy. But one researcher is already convinced that the system, which includes fabric mulch, is beneficial for growers. “This system is better for them. It’s already being used in …

contamination

How to Avoid Herbicide Contamination Issues

Daniel CooperPesticides, Tip of the Week

By Ramdas Kanissery Even a small amount of leftover herbicide in the spray tank can harm citrus trees. Contamination often occurs when the same sprayer is used on trees of different ages without being cleaned properly between applications. It can also happen when the sprayer is used for other pesticide products without a thorough rinse. Herbicide residues from certain herbicide …

CUPS research

Let’s Chat About CUPS

Daniel CooperCUPS, Technology

Citrus under protective screen (CUPS) continues to spread across the Florida landscape. The practice is allowing growers to produce high-yielding and high-quality fruit. Roughly 1,500 acres are now planted under screen in Florida. MEET CUPSchat Arnold Schumann, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) professor of soil, water and ecosystems sciences, pioneered CUPS research in Florida. His …

podcast

All In For Citrus Podcast, October 2025

Daniel CooperAll In For Citrus Podcast, CUPS

The October All In For Citrus podcast features citrus under protective screen (CUPS). Over the past decade, the practice has grown in popularity due to its ability to exclude the Asian citrus psyllid and huanglongbing (HLB) disease. Roughly 1,500 acres of citrus are grown under screen in Florida with more acreage under development. Lauren Diepenbrock, associate professor of entomology at …

pruning

Pruning Young Citrus Trees

Daniel CooperCold Hardy, Pruning

Pruning is an important management tactic that cold-hardy citrus growers need to implement, especially during the early stages of tree development. Fernando Alferez, a University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) citrus horticulturist, discussed pruning during the Cold-Hardy Citrus Field Day and Workshop in Quincy on Oct. 1. “Pruning is important because it will give the tree …

prolong

Prolong Tree Health by Combining Covers and Brassinosteroids

Daniel CooperHLB Management, IPCs

As every Florida citrus grower knows, it has been difficult to grow trees and fruit profitably since huanglongbing (HLB) disease was discovered in the state in 2005. Soon after the disease was discovered, officials determined it couldn’t be eradicated largely because the Asian citrus psyllids (ACP) that spread it showed up years earlier and were in virtually all citrus-producing regions. …

SAR

SAR Sprays Protect Against Psyllids, HLB and Canker

Daniel CooperDiseases, HLB Management

Recent research has shown that systemic acquired resistance (SAR) sprays can protect young citrus tree flushes from Asian citrus psyllid (ACP) feeding, HLB and citrus canker. ACP is the vector that spreads HLB disease from tree to tree. Researchers with the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) and Bayer Crop Science report that SAR sprays can …

photoperiod

Photoperiod and Citrus Cold Tolerance

Daniel Cooperfreeze, Research

Nazneen Qureshi, a University of Florida (UF) graduate research assistant, is investigating how photoperiod — the amount of light a plant receives each day — can help citrus fruit tolerate cold weather.  Qureshi’s research is done alongside UF Institute of Food and Agricultural Sciences (UF/IFAS) Assistant Professor Muhummad Shahid. The research looks at whether the amount of light a plant …

freeze tolerance

Freeze Tolerance Is Key to Diversification

Daniel CooperCold Hardy, Research, Varieties

Freeze tolerance is a focal point of citrus studies conducted at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) North Florida Research and Education Center in Quincy. As citrus production continues to grow in the cold-hardy citrus region, growers need varieties that are able to withstand prolonged periods of sub-freezing temperatures. Leading that research is Muhammad Shahid, …

irrigation management

Irrigation Management for Improved Citrus Production

Daniel CooperIrrigation, Tip of the Week

By Davie M. Kadyampakeni and Alisheikh A. Atta The conventional four Rs for nutrient management are right source, right place, right rate and right time. This approach allows growers to synchronize nutrient supply with crop demand, enhance tree health and fruit yield, and abate economic costs and environmental losses.  In contemporary farming systems in Florida citrus production, considering a fifth R …

benefits

Silicon Benefits Citrus

Daniel CooperCitrus Expo, Nutrition

A University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researcher recently highlighted a number of benefits from using silicon as a nutrient for citrus. Muhammad Shahid, assistant professor at the North Florida Research and Education Center, presented silicon research findings at the Citrus & Specialty Crop Expo in August.   According to Shahid, silicon is categorized as a plant …

plant breeding

UF/IFAS Is New Host of Plant Breeding Program

Daniel CooperBreeding

The University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) is the new home for Breeding Insight, a federally funded program supporting public plant breeding efforts. Breeding Insight, funded by the U.S. Department of Agriculture (USDA) Agricultural Research Service, supports public breeding efforts via more than 61 programs at the USDA as well as university-based programs across the country. …

psyllid

Psyllid Management Tactics Discussed

Daniel CooperCitrus Expo, HLB Management, Psyllids

Control of HLB-spreading Asian citrus psyllids (ACP) can be enhanced with dormant winter sprays and a focus on spraying grove perimeters, according to Citrus & Specialty Crop Expo presenter Jawwad Qureshi. Qureshi is an associate professor of entomology at the University of Florida Institute of Food and Agricultural Sciences Southwest Florida Research and Education Center. DORMANT SPRAYS In making the …

blood oranges

Blood Oranges Could Be Profitable Option for Cold-Hardy Citrus Producers

Daniel CooperCold Hardy

Blood oranges may be an enticing fruit to grow for cold-hardy citrus producers in North Florida, South Georgia and South Alabama. Muhammad Shahid, assistant professor of horticulture at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS), highlighted his blood orange research during the Cold-Hardy Citrus Field Day and Workshop at the North Florida Research and Education Center …

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 …

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; …

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 …

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 …