citrus greening

USDA Invests in Fighting Citrus Greening Disease

Daniel CooperCitrus, Citrus Greening, Industry News Release, Research

The U.S. Department of Agriculture’s (USDA) National Institute of Food and Agriculture (NIFA) announced awards to combat citrus greening disease. The funding to support research and Extension programs is made through the emergency Citrus Disease Research and Extension Program (CDRE). CDRE was authorized as part of the 2014 Farm Bill. “The need to advance research and Extension to develop management …

citrus

Cold-Tolerant Citrus Industry Update

Jaci SchreckengostFreeze Protection, Top

Two University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) professionals spoke at the recent Cold-Tolerant Citrus Production for the Southeastern Coastal Plain event about the current state of the industry. UF/IFAS entomologist Xavier Martini said he has seen growth in interest for cold-tolerant citrus between 2016 and 2017. He also said he has seen an increase in the …

California Citrus Research Board: Serving Growers for 50 Years

Tacy CalliesResearch

By Len Wilcox The grower-funded California Citrus Research Board (CRB) is celebrating its 50th anniversary this year. Headquartered in the Central Valley city of Visalia, under the direction of president/CEO Gary Schulz, the CRB awards more than $7 million each year to researchers throughout California. Since 2008, CRB has focused much of its efforts on huanglongbing (HLB), with approximately $33 …

HLB

Tools for Growing Citrus in the HLB Era

Ernie NeffHLB Management, Production

Economist Tom Spreen thinks advanced production systems (APS) and citrus under protective screen (CUPS) offer hope for some growers in the face of HLB. Spreen, a University of Florida Institute of Food and Agricultural Sciences professor emeritus, discussed APS and CUPS at a recent Gulf Citrus Growers Association economic seminar in LaBelle. Spreen says growing with APS “means you have …

Sneak Peek: January 2018 Citrus Industry Magazine

Tacy CalliesSneak Peek

Citrus Industry magazine subscribers have one more Christmas present to open. The January issue comes packaged with a complimentary copy of a brand new magazine, Vegetable and Specialty Crop News. Brought to you by AgNet Media, VSCNews is geared to growers in the Southeast. It contains production-related information as well as updates on big-picture agricultural issues like trade reform and …

psyllid

Psyllid Control Strategies

Ernie NeffHLB Management, Psyllids

University of Florida Institute of Food and Agricultural Sciences entomologist Jawwad Qureshi discussed several means of Asian citrus psyllid control at Citrus Expo in August. He provides an overview of his presentation. Qureshi says it is best to start psyllid sprays during the winter dormant period. “Do it individually or do it in a collaborative effort, but you must do …

Update on Citrus Undercover Production Systems Research

Tacy CalliesHLB Management

By Arnold Schumann, Laura Waldo, Alan Wright and Rhuanito Ferrarezi  Authors’ note: This article was written before Hurricane Irma passed through Florida. We are still assessing the full impact and implications of storm damage to both University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) citrus undercover production systems (CUPS) facilities and will provide updates in future articles. Citrus …

What Lies Ahead for Florida Citrus?

Tacy CalliesDiseases, HLB Management, Pests, Varieties

Editor’s note: This article is part of the special coverage on the 100th Anniversary of the UF/IFAS Citrus Research and Education Center, found in the October 2017 issue of Citrus Industry magazine. By Tom Nordlie Although it’s difficult to predict future events, directors of the University of Florida Institute of Food and Agricultural Sciences Citrus Research and Education Center (CREC) …

A Look Back at 100 Years of Citrus Innovation

Tacy CalliesHistory

By Beverly James, Alec Richman, Brad Buck, Samantha Grenrock and Tom Nordlie The year was 1917. In April, the United States entered World War I. Florida’s population was fast approaching 1 million, and agriculture was the state’s most important economic driver. Citrus cultivation, introduced to Florida 400 years earlier by Spanish explorers, had spawned an industry following the Civil War. …

Citrus Production in Argentina

Tacy Callieslemons

By Stephen H. Futch and Ariel Singerman In May of 2017, we visited the northwestern citrus production region of Argentina in the provinces of Jujuy, Salta and Tucumán. The purpose of the trip was to learn more about Argentina’s citrus industry and programs being developed to deal with both the Asian citrus psyllid (ACP) and huanglongbing (HLB). Argentina has a …

psyllids

Keep Spraying Psyllids in HLB-Infected Groves

Ernie NeffHLB Management, Psyllids

  In a Citrus Expo talk, University of Florida Institute of Food and Agricultural Sciences entomologist Phil Stansly focused on the importance of continuing to spray psyllids in groves already infected with HLB. The main reason to do that, he says, is to keep psyllids from re-inoculating trees with HLB by “pumping more and more bacteria into that tree.” He …

Impact of Temperature on Psyllid Survival

Tacy CalliesPsyllids

By Nabil Killiny and Steve Futch Citrus growers frequently inquire if Florida temperatures in the summer or winter are sufficiently high or low enough to control or suppress the Asian citrus psyllid (ACP). This question is the subject of this short article. The reason growers pose the question about how temperature impacts psyllids is because ACP is a phloem feeder …

HLB

Bactericides, Psyllids and HLB-Resistance/Tolerance

Ernie NeffBactericides, HLB Management, Psyllids

At a recent meeting of the Citrus Research and Development Foundation’s (CRDF) Commercial Product Delivery Committee, approximately half of the agenda was devoted to bactericides and HLB-spreading psyllids. Reflective mulch that keeps psyllids away and field trials for HLB-resistant or tolerant rootstocks and scions were also addressed. CRDF Chief Operations Officer Harold Browning summarizes some of the discussions. “The issue …

system

System Screens Out Citrus Greening-Carrying Insect

Daniel CooperCitrus Greening, Industry News Release, Research

Imagine camping in the deep woods. You’d want a tent with mesh that prevents bugs – even those as small as gnats – from entering into your wildlife hangout. That’s the idea behind citrus under protective screens, or CUPS, which helps keep away a pinhead-sized insect that causes citrus greening, University of Florida/Institute of Food and Agricultural Sciences (UF/IFAS) scientists …

Grower Response to Psyllid Insecticide Resistance

Ernie NeffPsyllids

Lee Jones was in the Citrus Expo seminar audience recently when a scientist reported there have been incidences of HLB-spreading psyllids being resistant to insecticides. Jones, general manager of Gardinier Florida Citrus, has one recommendation for dealing with the issue, at least partially. “I would really suggest that October to March window as an application window for the imidacloprids (a …

acp

HLB-Spreading Psyllids Resistant to Insecticides

Ernie NeffHLB Management, Psyllids

Ears perked up in the Citrus Expo seminar hall last week when Lukasz Stelinski reported incidences of Asian citrus pysllid resistance to insecticides, “particularly the neonicotinoid group of insecticides in Florida.” The neonicotinoids have been a key weapon against the psyllids that have spread HLB to groves statewide. Stelinski, an entomologist with the University of Florida’s Institute of Food and …

citrus greening

HLB Found in California Citrus Birthplace

Abbey TaylorCalifornia Corner, Citrus Greening

A citrus tree in the city of Riverside tested positive for huanglongbing (HLB) disease. The detection is the first case of HLB found in a major citrus-producing county and the most northern in California. The California Department of Food and Agriculture (CDFA) confirmed the detection of HLB disease in a sample taken from a grapefruit tree located in a Riverside …

In-Field Fruit Fogging for Psyllid Control

Tacy CalliesPsyllids

The California Citrus Research Board (CRB) hosted live Asian citrus psyllid (ACP) fogging demonstrations in April. The purpose was to show the viability of controlling the spread of ACP by fogging shipments of citrus on the truck, as close to the harvested field as possible. Spencer Walse, CRB research scientist specializing in chemical applications in agriculture, carried out the demonstrations. He is based at …

Sneak Peek: July 2017 Citrus Industry Magazine

Tacy CalliesResearch, Sneak Peek, Technology

Technology and equipment are the main themes of the July issue of Citrus Industry magazine. Not to be missed in this issue is a cover story on University of Florida citrus breeder Fred Gmitter, written by senior correspondent Ernie Neff. The article explores the genetic technologies Gmitter is using to create improved citrus varieties. You’ll also learn some surprising facts …

citrus greening

Citrus Greening Detected in Alabama

Daniel CooperCitrus Greening, Industry News Release

A plant disease that presents a serious threat to the U.S. citrus industry has been detected in Alabama. Federal and state plant health officials have confirmed the identification of citrus greening, also known as huanglongbing or HLB, which is caused by the bacterial pathogen Candidatus Liberibacter asiaticus. This is the first confirmation of citrus greening in Alabama despite biannual surveys …