Cold Hardy Citrus Association Building a Solid Foundation

Tacy CalliesCold Hardy

The Cold Hardy Citrus Association (CHCA), founded in 2017, was established to ensure all growers, large and small, have a unified voice in an emerging industry and to provide education on best management practices in light of HLB. CHCA members include growers, packers, processors, industry suppliers, nurseries, consultants, homeowners and academia representing Florida, Georgia, Alabama, Louisiana and Mississippi. Kim Jones …

foliar disease

Foliar Disease Management in 2021

Tacy CalliesDiseases

By Megan Dewdney There were many challenges in 2020, but fortunately the Florida season for foliar citrus diseases was relatively normal. Little to no postbloom fruit drop (PFD) was reported during the 2020 bloom because of a sudden dry spell as the flowers opened. As spring 2021 approaches, the forecast is for a La Niña weather pattern with slightly warmer …

Field-Testing Natural Compounds to Fight HLB

Tacy CalliesAll In For Citrus Podcast, HLB Management

Field tests of numerous antibacterial products and plant-derived compounds are underway with the goal of eliminating the HLB-causing bacteria in citrus and reversing plant damage to restore tree health. University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) plant root biologist Lorenzo Rossi discusses a new research project funded by the U.S. Department of Agriculture’s (USDA) National Institute of …

FDOC

Speeding Up Citrus Growth

Tacy CalliesBreeding

Two University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers will study citrus roots and stems to improve photosynthesis in plant leaves. Christopher Vincent and Fred Gmitter hope to find the optimal relationship between citrus tree “sources” and “sinks” so that plant breeders can select varieties — and growers can use practices — that lead to faster-growing plants. …

acp

ACP Monitoring Efforts in Georgia

Tacy CalliesGeorgia

The citrus industry is expanding in Georgia. With that growth comes the need to slow the spread of the Asian citrus psyllid (ACP), the vector of HLB disease. Although not yet found in Georgia’s commercial citrus production, there have been confirmed HLB-positive residential citrus trees. The disease has the potential to greatly hinder the state’s citrus industry. Therefore, University of …

Seminar to Address Fruit Drop Questions

Tacy CalliesFruit Drop

Citrus fruit drop before harvest has been a perennial problem for Florida growers but has been particularly challenging this season. Tripti Vashisth and Fernando Alferez of the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) will present their latest research on fruit drop and answer questions from growers in a Zoom seminar on Feb. 16. The seminar is …

Cold Acclimation and Leaf Freezing Temperatures

Tacy CalliesWeather

Citrus Extension agent Chris Oswalt reports the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) is determining the acclimation of Florida citrus trees to cold weather by measuring citrus leaf freezing temperatures. “Certain environmental conditions will initiate this acclimation process,” says Oswalt. “These environmental cues will cause physiological changes to occur within the plant that will depress the …

Time to Cut the Dead Wood

Tacy CalliesTip of the Week

By Megan Dewdney, Tripti Vashisth and Lauren Diepenbrock Dead wood has long been challenging for fresh citrus fruit production. Spores in twigs can form which cause blemishing diseases that downgrade fruit for lower profits. More recently, it has come to light that there are horticultural and entomological reasons to remove this wood as well. Many growers are familiar with melanose, …

spray drift

The Goals of Pest Management

Josh McGillCEU

By Ajia Paolillo 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. Integrated pest management (IPM) uses a combination of methods to keep pest populations at an acceptable level, which are economical …

USDA to Purchase Citrus Products

Tacy CalliesCitrus

Mike Sparks, Florida Citrus Mutual executive vice president/CEO, reported that the U.S. Department of Agriculture (USDA) announced another round of citrus purchases totaling almost $48 million. The breakdown includes $10 million worth of orange juice, $7.5 million worth of grapefruit juice, $25 million in fresh oranges and $5 million in fresh grapefruit. The USDA purchases will be for distribution to …

App Now Available to Diagnose Citrus Leaf Problems

Tacy CalliesTechnology

Visual identification of nutrient deficiencies and leaf damage is an important diagnostic tool for fine-tuning management of citrus. Arnold Schumann, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) professor, shared how UF/IFAS researchers have used artificial intelligence (AI) to diagnose citrus nutritional deficiencies, diseases and pest damage. According to Schumann, disease and pest symptoms on leaves may cause …

Pieces of the Past: Waverly’s Window

Tacy CalliesPieces of the Past

By Brenda Eubanks Burnette I grew up in Winter Haven and have driven by Waverly Growers Cooperative countless times when traveling around Polk County. But I never knew that at one time there was a formal garden and picnic grounds adjacent to the Waverly Welcome House.  Founded in 1914 by a group of local growers led by Charles Hillery Walker …

CRDF Selects Rootstocks for Trials

Tacy CalliesCRDF

The Citrus Research and Development Foundation (CRDF) directors recently ratified the rootstock selections for the planned rootstock field trials and discussed the organization’s involvement in future research, CRDF Chief Operating Officer Rick Dantzler reported. The board ratified 10 rootstock selections for the new field trials, overseen by CRDF’s Select Committee on Plant Improvement. According to Dantzler, the field trials will evaluate …

Growers Wanted for Nutrition Box Program

Tacy CalliesNutrition

Last year, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) scientists offered Florida citrus growers soil and leaf testing along with tailored quarterly nutrition counseling in an effort to improve tree health. The Citrus Nutrient Management Program, more commonly known as the nutrition box program, has successfully supported 75 growers from 17 counties across the state. Michael Rogers, …

Fire Ant Management in Citrus

Tacy CalliesPests

By Lauren M. Diepenbrock While there are many species of ants in Florida, the invasive fire ant (Solenopsis invicta) is the one most people are familiar with. These ants can be pests in agriculture, landscapes and structures. The pest’s ability to use a variety of habitats and resources makes it challenging to manage. In citrus groves, fire ants can be …

Sneak Peek: February 2021 Citrus Industry

Tacy CalliesDiseases, Sneak Peek

While everyone strives to protect themselves from coronavirus disease, growers have an additional concern: protecting their trees from citrus disease. While HLB is of course the most damaging disease of citrus, there are other diseases that should not be overlooked. Disease management is the theme of the February 2021 issue of Citrus Industry magazine. University of Florida Institute of Food …

Advice for Using Soil Moisture Sensors

Tacy CalliesIrrigation, Technology

Proper irrigation management is key to optimize water use and increase crop yield. Water is a limiting factor in Florida citrus production during most of the year due to extremely sandy soils with low water-holding capacity and non-uniform distribution of rainfall. Soil moisture sensor systems may provide the most reliable data for effective citrus irrigation scheduling under these conditions. Rad …

fresh

Research Projects on OJ Recommended for Approval

Tacy CalliesOrange Juice, Research

The Scientific Research Advisory Committee met Jan. 21 to review recent updates from the Florida Department of Citrus (FDOC) and to review and recommend to the Florida Citrus Commission (FCC) for approval two new research proposals. The FCC serves as the FDOC’s governing board. Rosa Walsh, director of the FDOC Scientific Research Department, gave an update on the 2020–2025 Dietary …

Plan Your Insect Management for 2021

Tacy CalliesPests, Tip of the Week

By L.M. Diepenbrock Insect and mite management is a year-round challenge in Florida citrus. With the warm climate, pests are at the ready as soon as plant resources are available to them. With knowledge of insect and mite biology in relation to tree phenology, plans can be developed to protect fruit and maintain productive citrus trees. Populations of many of …

Growers Tour Indian River CUPS Houses

Tacy CalliesCUPS

Citrus growers from several of Florida’s production regions joined researchers recently for a look inside 14-foot high screenhouses that protect trees from HLB-spreading Asian citrus psyllids. The CUPS (Citrus Under Protective Screens) Field Day took place at the University of Florida Institute of Food and Agricultural Sciences Indian River Research and Education Center (UF/IFAS IRREC) in Fort Pierce. Johnny Ferrarezi, …