Pests, Pathogens and IPCs

Jim Rogers IPCs, Pests, Research

By Lauren Diepenbrock, Megan Dewdney, Fernando Alferez, Jawwad Qureshi and Ozgur Batuman Individual protective covers (IPCs) are becoming commonplace in citrus production to support the development of young trees after planting. IPCs are made of fine mesh and are intended to keep Asian citrus psyllids (ACP) off young plants. Because ACP can transmit the pathogen that causes citrus greening/huanglongbing, preventing …

Speeding the Search for an HLB Solution

Jim Rogers HLB Management, Research, Varieties

By J. Scott Angle, jangle@ufl.edu, @IFAS_VP My hope is that your new citrus breeding team scientist will be a new Bill Castle on warp speed for an HLB solution. That is, John Chater will accelerate the search for citrus varieties that hold up against HLB. He’s got tens of thousands of places to search. Fred Gmitter and Jude Grosser have …

HLB Research Priorities

Jim Rogers All In For Citrus Podcast, HLB Management, Research

Michael Rogers, director of the University of Florida of Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Research and Education Center in Lake Alfred, discussed the recent Florida Citrus Growers’ Institute in the April All In For Citrus podcast. The event drew a good crowd of growers who came to learn about the latest research aimed at HLB. Rogers made …

Products Proven to Help With HLB

Jim Rogers HLB Management, Research

Researchers offered updates on products proven to help against the devastating citrus disease HLB in a virtual seminar on April 27. University of Florida Institute of Food and Agricultural Sciences horticulturists Tripti Vashisth and Fernando Alferez discussed the benefits of gibberellic acid (GA) and brassinosteroids, respectively. Vashisth reported that GA-treated Valencia orange trees dropped less fruit and increased fruit yields …

Consortium Research Aims at HLB

Jim Rogers HLB 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 …

Brazil to Study Wildlife in Citrus Orchards

Jim Rogers Brazil, Environment, Research

Embrapa and Fundecitrus, which are investigating carbon stocks in the Brazilian citrus belt, will also study how citrus production sites and farms can be habitats for wild fauna. Embrapa is the Brazilian Agricultural Research Corporation. “Biodiversity is an indicator of environmental quality,” says Embrapa researcher José Roberto Miranda. He will coordinate the work to identify vertebrate animals, especially birds and …

Herbicides and Fruit Drop

Jim Rogers Fruit Drop, Research, weeds

Weed scientist Ramdas Kanissery’s research has not shown evidence that herbicides, including glyphosate, increase citrus fruit drop or decrease yields. But in studies using different glyphosate rates, he did find that there is a relatively strong negative correlation with the fruit detachment force and the glyphosate amount applied. “That means there may be something happening with the higher glyphosate rate” …

Cold-Hardy Citrus Is New Researcher’s Focus

Jim Rogers Cold Hardy, Research

Muhammad Adnan Shahid in January joined the University of Florida Institute of Food and Agricultural Sciences’ (UF/IFAS) North Florida Research and Education Center (NFREC) as assistant professor of horticulture/fruit crops specialist. His Extension goal is providing fruit producers, particularly cold-hardy citrus growers, with relevant, research-based information for improving productivity, profitability and produce quality. Shahid is interested in evaluating new early …

Greasy Green Research Approved

Jim Rogers CRDF, Diseases, Research

Due to the initiative of the Indian River Citrus League (IRCL), the Citrus Research and Development Foundation (CRDF) has approved research funding for the greasy green defect on citrus fruit. At a 2021 IRCL board meeting, the issue of greasy green spot was brought up by Tim Sallin of IMG Citrus. Other growers at that meeting also shared their experience …

All In For Citrus Podcast, April 2022

Jim Rogers All In For Citrus Podcast, CUPS, Research

Florida citrus growers need help in the fight against HLB. And they need that help quickly. Michael Rogers, director of the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Citrus Research and Education Center, addresses those concerns during the April All In For Citrus podcast. He says UF/IFAS scientists understand the urgency of the HLB fight and that …

florida

Integration of Nutrition and Crop Protection Products

Jim Rogers Nutrition, Pesticides, Research

By Davie Kadyampakeni and Evan Johnson In the era of citrus greening disease (huanglongbing, HLB), maintaining optimal nutrition and disease/pest management strategies is critical for avoiding adverse effects on tree performance. Use of the right fertilization rate, timing and placement are important for optimal citrus production. In a University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) research study, …

HLB Research Focused on Near-Term Solutions

Jim Rogers HLB Management, Research

The urgency is high to find any solution to help citrus growers more effectively mitigate HLB. During the Florida Citrus Growers’ Institute this month, Citrus Research and Education Center director Michael Rogers gave a presentation that outlined the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) research projects aimed at finding short-term HLB solutions. “We understand where the …

Biostimulants and Cold-Hardy Citrus

Jim Rogers Biostimulants, Florida, Research

The University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) is asking fruit growers in North Florida, Alabama and Georgia to take a survey about crop biostimulants. UF/IFAS will use the results to better help those growers with the use of biostimulants and direct future research and Extension education programs. Those participating in the anonymous survey are asked to …

Research Update: Stable Antimicrobial Peptide

Jim Rogers Peptides, Research

By Hailing Jin Research on the effectiveness of a novel stable antimicrobial peptide (SAMP) identified from the Australian finger lime (Microcitrus australasica) to fight huanglongbing (HLB) continues in a multistate initiative involving 1,500 citrus trees. Although the pandemic has impacted the progress of the research, work has steadily continued and expanded.  Researchers at the University of California, Riverside and University …

Promising New Research Discussed at Florida Citrus Growers’ Institute

Jim Rogers HLB Management, Research

Growers gathered in Avon Park at South Florida State College for the Florida Citrus Growers’ Institute on April 5. The event, organized by regional citrus Extension agents with the University of Florida Institute of Food and Agricultural Sciences, aims to provide timely research that can be applied in groves today. It also was an opportunity for growers to get updates …

Indian River Citrus Trial Provides HLB Insights

Jim Rogers HLB Management, Research

Early results from a large-scale citrus trial looking for solutions to HLB, also called citrus greening, show tree size does not seem to affect citrus susceptibility to the disease. The trial is being conducted in the Indian River region by researchers with the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS). They are testing which citrus rootstock and …

Tip of the Hat to University of Florida Citrus Graduate Students

Jim Rogers All In For Citrus Podcast, Education, Research

During the March All In For Citrus podcast, Michael Rogers, director of the Citrus Research and Education Center, gave props to graduate students in the citrus program at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS). There are 65 students currently enrolled in the program carrying out their studies across the state. “Graduate students play a huge …

Citrus Commission Learns About HLB-Tolerant Trees, Other Research

Jim Rogers Florida Department of Citrus, HLB Management, Research

At the Florida Citrus Commission meeting earlier this month, a federal scientist outlined an eight-step action plan for research and development of heirloom orange trees that appear to be tolerant to HLB. Brian Scully, director of the U.S. Department of Agriculture’s (USDA) Horticultural Research Laboratory, discussed the Donaldson and Tobias trees at USDA’s Whitmore Foundation Farm. A third tree is …

How to Reduce Bingo Tree Loss to Stem Dieback

Jim Rogers Diseases, Research

By Christopher Vincent, Megan Dewdney and Liliana Cano Bingo mandarin hybrid is a variety with many promising characteristics, but it brings specific challenges to profitable production. One challenge identified early in the push to plant Bingo was stem dieback that led to tree loss. After looking into this problem for the past four years, University of Florida Institute of Food …