Populations of HLB-spreading psyllids in groves can be impacted by windbreaks, grove orientation and whether new plantings are resets or solid settings. So says Kirsten Pelz-Stelinski, an entomologist with the University of Florida’s Institute of Food and Agricultural Sciences. “Windbreaks are one of the best things that you can do in terms of protecting the grove,” Pelz-Stelinski says. She says …
Sneak Peek: May 2017 Citrus Industry Magazine
The topic of nutrition takes center stage in the May issue of Citrus Industry magazine. Part two of an article co-authored by growers and a researcher presents case studies on how controlled-release fertilizer can boost the health of HLB trees. Also included in the May issue is an update on grower citrus nutrition trials being conducted by University of Florida. …
What Growers Say and Hear at Mutual Meetings
Florida Citrus Mutual has been cooking for its grower members, hearing what’s on their minds and telling what the association is doing for them at area meetings this spring. At a recent meeting in Bartow, Mutual CEO Mike Sparks summarized what growers are talking about, and what Mutual is telling the growers. “The entire citrus industry knows we’re still in …
CRDF President Discusses Bactericides
Tom Jerkins, president of the Citrus Research and Development Foundation, several years ago led a crowd at Florida Citrus Mutual’s annual meeting in chanting, “We need bactericides now!” The bactericides, which growers hope will significantly reduce HLB impacts on citrus trees, have been available to citrus growers for more than a year now. Most growers reportedly are using them, at …
Ground Cover Management Can Improve Citrus Nutrition
By Christopher Vincent I recently spent a morning with a grower who was trying to find out how efficient his citrus fertility program was. His fertilizer practices were carefully considered combinations of granular fertilizer and fertigation based on foliar sampling and yield history. We were there to observe some European consultants who were measuring mineral nutrient levels in the root …
Citrus Canker Management for 2017
By Evan Johnson The citrus canker season is quickly approaching again, so it is time to start preparing your canker management plan. It is easy to forget the importance of controlling citrus canker with the current state of HLB in Florida. However, citrus canker can cause almost complete crop loss if environmental conditions are favorable for disease early in the …
Psyllid Movement and Location in Trees
University of Florida entomologist Kirsten Pelz-Stelinski presented an abundance of facts about Asian citrus psyllids at the recent Florida Citrus Growers’ Institute in Avon Park. Her presentation included a discussion on how far the HLB-spreading psyllids can travel and where they are predominantly found in citrus trees. “They’re quite capable of long-distance movement, about four miles we determined,” Pelz-Stelinski says. …
Keys to Gulf Citrus Production
Several Florida growers recently have said that groves in the Gulf citrus region of Southwest Florida are looking better than most groves in the state. Additionally, statistics indicate production in the Gulf region exceeds production in the state as a whole. Multi-county citrus Extension agent Mongi Zekri, who represents the Southwest/Gulf region, was recently asked why the Gulf was doing …
The Pest Partnerships that Threaten Citrus
Biocontrol of Asian citrus psyllids can be improved by controlling ants. By Kelsey Schall and Mark Hoddle More than a decade of battle with the Asian citrus psyllid (ACP)-huanglongbing (HLB) complex has drained the vigor from Florida’s citrus industry, costing billions in disease management and production losses. With HLB established in parts of urban Southern California, the second largest citrus …
Controlling ACP and Other Pests as Critical as Ever
By Jawwad A. Qureshi and Philip A. Stansly More than a decade has passed since 2006, when huanglongbing (HLB) or citrus greening disease was identified in Florida. By then, the disease had already spread widely and went unrecognized due to high psyllid populations and a disease incubation period of months or years between infection and symptom expression. Nevertheless, management of …
Entomopathogenic Nematodes: Root Weevil Management Tool
By Larry Duncan Citrus growers are recognized as early adopters of practices that enhance the biological control of arthropod pests. For more than a century, tactics such as the exploration and importation of predators and parasitoids or the reduced use of insecticides that disrupt biological control were increasingly employed against pests in the tree canopy. Beginning in the early 1990s, …
Sneak Peek: April 2017 Citrus Industry Magazine
Greening disease, known as HLB, is a top concern for citrus growers worldwide. The April issue of Citrus Industry magazine is all about boosting the health of HLB-infected trees. Articles on this theme cover the use of controlled-release fertilizer, bicarbonate management, foliar nutrition and irrigation strategies. This month, for the first time Citrus Industry’s CEU Central article offers a continuing …
Phil Stansly: Psyllid Slayer
By Ernie Neff Gulf citrus growers had a CHMA (citrus health management area) before CHMAs were popular — even before they were called CHMAs! Phil Stansly, University of Florida (UF) entomology professor, is among those credited with organizing Florida’s first psyllid- and HLB-fighting CHMA. Others recognized for the achievement include Gulf Citrus Growers Association (GCGA), Florida Cooperative Extension Service and …
Safeguarding Citrus Stock
By Georgios Vidalakis On March 30, 2007, I received a memorable phone call in my office at the University of California (UC), Riverside. “Georgios,” said the caller, “The 2008 Farm Bill will establish the National Clean Plant Network (NCPN) for specialty crops. This program will be like no other because it will be driven from the ground up. The system …
Blight Research Update
Ron Brlansky, a University of Florida professor emeritus, spent much of his career at the Citrus Research and Education Center researching blight, and he’s still working on it. He discussed efforts to obtain funding for more research at a recent seminar in Lake Alfred attended by about 20 people. “We have a virus that’s associated with it (blight) now,” Brlansky …
Hall of Famer Sparks Credits Teams for Success
Florida Citrus Mutual Chief Executive Officer Mike Sparks, inducted into the Florida Citrus Hall of Fame on March 10, lists a group of teams that contributed to his success. “You’ve got to look at the big groups, no one individual – the citrus commissioners, past executive directors at the Department of Citrus, professional staff, growers, Mutual’s board of directors, Mutual’s …
New Highlands President on PFD, Psyllids and More
Billy Barben, new president for the Highlands County Citrus Growers Association (HCCGA), says he is optimistic that new fertilizer programs and future genetic trees “will give us hope in the future.” Barben, whose brothers, Bobby and John, have also served the association as president, says, “I’m more of the dirt guy in my family.” As a grower, he has opinions …
Finger Lime Could Be New Crop for Citrus Growers
By Manjul Dutt, Ethan Nielsen and Jude Grosser The finger lime is a citrus relative, scientifically named Microcitrus australasica. Finger limes are native to Australia and are so named because the fruits are long and fingerlike in shape (see figures 1 and 2). Finger limes belong to a group of similar citrus relatives, all originating from Australia with common names …
Will You Be Ready for Postbloom Fruit Drop?
By Megan M. Dewdney Again in 2016, postbloom fruit drop (PFD) caused widespread problems in Florida groves. There were multiple factors that contributed to the outbreak in 2016. The primary factor was likely the extended bloom that many saw because of a combination of tree stress caused by huanglongbing (HLB) and the very warm winter. Bloom in some groves was …
‘It’s Not a Pretty Picture,’ Industry Leader Tells State Senators
On February 21, leaders of three key Florida citrus organizations acquainted the Florida Senate’s Agriculture Committee with the issues facing the citrus industry. They summarize their presentations: “It’s not a pretty picture,” says Florida Citrus Mutual CEO Mike Sparks. He describes the huge production losses and increased costs that HLB disease has created. “Right now our whole future revolves around …