Oak Leaf Extract Tested as HLB Tool

Ernie NeffHLB Management

In the search for solutions to HLB, a formulation based on oak leaf extract has been developed by citrus growers Travis Murphy and Tom Thayer, the Indian River Citrus League’s October River Ramblings newsletter reported. The formulation was developed following the growers’ observations that citrus trees under oak trees were free of HLB compared to nearby field trees that had …

nutrition

Open Conversation, Hands-On Exhibits and Field Tours

Ernie NeffAll In For Citrus Podcast, Events

Citrus Research and Education Center (CREC) Director Michael Rogers previews the Nov. 16 Open House/Field Day at the CREC in Lake Alfred. The CREC is part of the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS). The program will begin at 9 a.m. “It starts off with a panel discussion, talking about strategies to improve overall health of …

Fertilization Methods: Pros and Cons

Ernie NeffNutrition

Brandon White with the University of Florida Institute of Food and Agricultural Sciences discussed the pros and cons of several types and methods of citrus fertilization at Citrus Nutrition Day on Oct. 26. The event was held at the Citrus Research and Education Center in Lake Alfred, Florida. White recently became the new commercial fruit crop agent for Florida’s Lake …

Gator Bites: Competition for Clementines

Ernie NeffVarieties

Citrus Research and Education Center (CREC) Director Michael Rogers recently praised the Gator Bites mandarin variety that is being developed by the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS). Gator Bites look like California clementines, branded as Cuties and Halos, but Rogers thinks Gator Bites is a better piece of fruit. “This makes the Cuties and Halos …

An Improved Method of Nutrient Analysis

Tacy CalliesNutrition, Technology, Tip of the Week

By Yiannis Ampatzidis and Ute Albrecht Optimizing nutrition is important for tree health and productivity and can improve tolerance to stresses and diseases. Good nutrient management requires regular field monitoring to identify problems and examine crop responses. Leaves need to be collected and sent to a specialized laboratory for detailed information on macronutrients and micronutrients, which is time-consuming and costly. …

CUPS Not for All Citrus Growers

Tacy CalliesCUPS

One of the unique ways of managing citrus greening disease developed by University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers is not for all producers. Citrus under protective screen (CUPS) is just too expensive for all growers to take advantage of, says Fred Gmitter, a UF/IFAS citrus breeder. “It’s an extremely expensive investment,” Gmitter says. “For that …

Consumers Prefer Citrus Juice Blended With Sugar Belle®

Tacy CalliesOrange Juice

By Yu Wang, Xixuan Tang, Charles Sims, Zhifeng Gao and Renee Goodrich Citrus fruit produced from HLB-affected trees are green and taste bitter. They are usually not suitable for either the fresh market or juice market because they have a lower Brix/acid ratio. Mitigation strategies can cause less fruit drop and help citrus trees survive. However, they triple production costs, …

june

All In For Citrus Podcast, October 2021

Tacy CalliesAll In For Citrus Podcast

The University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) citrus breeding team discusses development of new varieties and rootstocks in the October episode of the All In For Citrus podcast. But before that discussion begins, Michael Rogers, UF/IFAS Citrus Research and Education Center (CREC) director, has the details on two upcoming events, including one in which growers can …

HLB Research Is Focus of Short Videos

Ernie NeffHLB Management

Two short videos about HLB-related research were available at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) booth at Citrus Expo in August. The videos are available online for viewing. UF/IFAS researcher Tripti Vashisth narrated the video, HLB-Associated Preharvest Fruit Drop. She said up to 40% of fruit can drop from mildly HLB-symptomatic trees shortly before harvest, …

Stay Vigilant on Handwashing and Hygiene

Tacy CalliesFood Safety, Tip of the Week

By Taylor O’Bannon, Michelle Danyluk and Matt Krug If you visited any public building or restroom during the COVID-19 pandemic, you may have noticed an increased focus on handwashing and hygiene principles reflected in an abundance of signage on doors and in hallways. While it is great that public awareness has increased in the last 18 months, these have always …

Highlands Citrus Agent Ready to Serve

Tacy Calliesextension

By J. Scott Angle The University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) is the world’s best university-based citrus science organization. We’re the largest, and we’re more than a century old. So, we’re constantly bringing in new talent. Extension Highlands County citrus agent Lourdes Pérez Cordero started on Sept. 7. She met with Highlands County Citrus Growers Association …

Stay Prepared Throughout Hurricane Season

Tacy Callieshurricane, Tip of the Week

By Ajia Paolillo Although October is toward the end of hurricane season, which runs from June 1 to Nov. 30, it can still be a very active month for storms. These storms can range from tropical depressions to hurricanes. Major concerns for citrus growers during a storm include personnel safety, damage to trees, fruit loss and damage to equipment and …

Understanding Mandarin Blooming and Fruit Set Requirements

Tacy CalliesProduction

By Fernando Alferez, Fred Gmitter and Jude Grosser Citrus trees bloom profusely. It is estimated that a healthy adult tree can produce more than 200,000 flowers every year. This figure is much higher than the number of fruits the tree can maintain and develop. Normally, only 1% to 5% of flowers set fruit that develops, matures and can ultimately be …

citrus

CUPS Pest Management Pointers

Ernie NeffCUPS, Pests

Citrus under protective screen (CUPS) systems in Florida provide trees significant protection from the Asian citrus psyllid (ACP) and the HLB it spreads. Several other pests are also significantly reduced in CUPS, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers reported. For instance, citrus leafminer (CLM) populations were reduced by more than 80%. Large predators such as …

Fungus Suppresses Asian Citrus Psyllids

Ernie NeffHLB Management

The citrus disease HLB, also known as citrus greening, has a formidable enemy in a fungal pathogen, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers reported. The fungus is Cordyceps javanica, strain Apopka, discovered by research scientist Lance Osborne in the mid-1980s. The fungus was isolated from dead insects on plants in a greenhouse at the UF/IFAS …

Phytophthora Root Rot a Concern in Georgia Citrus

Tacy CalliesDiseases

A saturated summer across the Southeast means more potential for development of phytophthora root rot disease in citrus trees. The impact on Georgia’s young trees could be devastating, says Jonathan Oliver, University of Georgia assistant professor and small fruits pathologist. Oliver implores Georgia’s citrus producers to stay vigilant with their fungicide sprays, as the wet conditions have not let up. …

irrigation

Growers Uncertain About BMPs

Ernie NeffBMPs

Citrus growers are adopting best management practices (BMPs), but there is some uncertainty about how the practices affect yields and profitability. That was the summary of a grower survey about BMPs conducted by the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS). A presentation highlighting the survey results was available at the UF/IFAS booth during Citrus Expo in …

Sneak Peek: October 2021 Citrus Industry

Tacy CalliesSneak Peek

Citrus growers need both quantity and quality for a successful crop. As HLB continues to negatively impact both these factors, growers are seeking strategies to safeguard their fruit. The October issue of Citrus Industry magazine presents ideas for enhancing fruit quality and quantity.   University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers Tripti Vashisth and Christopher Vincent …

Stepping Up Phosphorus Sustainability

Ernie NeffEnvironment, Nutrition

Two University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers have joined a national research effort to promote phosphorus sustainability across the United States. The researchers will work under the funding auspices of the National Science Foundation’s Science and Technology Center in the newly established Science and Technologies for Phosphorus Sustainability (STEPS). In addition to the University of …

CRDF

Regular Leaf Nutrient Analysis Improves HLB-Affected Trees

Tacy CalliesNutrition

By Tripti Vashisth and Davie Kadyampakeni Nutrition management is complex! Multiple factors affect the nutrient uptake and availability in trees. For example, high soil pH can limit the uptake of soil-applied micronutrients such as zinc (Zn) and manganese (Mn). Oxide forms of nutrients might be less available than nitrate or sulfur forms. Moreover, the time and method of nutrient application …