black spot

Keeping Young Trees Free of HLB

Ernie NeffHLB Management, Thermotherapy

Plant pathologist Megan Dewdney was one of the University of Florida Institute of Food and Agricultural Sciences researchers who summarized scientific presentations made at the 2017 International Research Conference on HLB. She and others spoke at an HLB Grower Day in Lake Alfred, putting the complex presentations into terms more understandable to those who aren’t scientists. Dewdney discussed young tree …

HLB

Grower Discusses Many HLB-Related Issues

Ernie NeffBactericides, Citrus Greening, HLB Management

Wauchula citrus grower and orange grove salesman Kenny Sanders was one of the growers sharing experiences at a recent grower roundtable meeting in Wauchula. Sanders tells why he attends the meetings and discusses several practices aimed at coping with HLB. “This is very interesting,” Sanders says of the roundtable meetings. “We hear from the growers ourselves, and today we learned …

Psyllids

Best and Worst Ways to Control Psyllids

Ernie NeffHLB Management, Psyllids

Kirsten Pelz-Stelinski, a University of Florida/Institute of Food and Agricultural Sciences entomologist, reports on the psyllid control methods that produce the best and worst results: “We looked at abandoned (groves); intermittently managed (groves), which we considered to be five or fewer insecticide sprays per year; we looked at organically managed groves; and we looked at what we called conventionally managed …

Growers Discuss Bactericides and Psyllid Control

Ernie NeffBactericides, HLB Management, Psyllids

The value of bactericides and Asian citrus psyllid control were some of the major issues that growers discussed at a forum in Sebring on May 11. Laurie Hurner, Highlands County Extension director and citrus agent, summarizes the discussions. Hurner reports that one grower will say the bactericides seem to be working against HLB, while another says they see no tree …

Controlled-Release Fertilizer Boosts Health of HLB Trees (Part 2)

Tacy CalliesCitrus, Nutrition

By Pete Spyke, Joby Sherrod and Jude Grosser Part 1 of this article, published in the April 2017 issue of Citrus Industry magazine, provided some background information on controlled-release fertilizer (CRF) along with a discussion of practical applications in citrus production. This article, part 2, includes summaries of observations from several case studies in which CRF has been applied for …

Psyllids

Psyllids: Windbreaks, Grove Orientation and Tree Planting

Ernie NeffHLB Management, Psyllids

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 …

Controlled-Release Fertilizer Boosts Health of HLB Trees (Part 1)

Josh McGillNutrition

By Pete Spyke, Joby Sherrod and Jude Grosser Editor’s note: Look for part 2 of this article in the May 2017 issue of Citrus Industry magazine. Part 2 will present case studies using controlled-release fertilizer. Until now, most growers have considered controlled-release fertilizer (CRF) to be primarily for use on young trees, especially resets in existing groves. There is increasing …

Psyllids

Psyllid Movement and Location in Trees

Ernie NeffHLB Management, Psyllids

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. …

Bucks Toward BMPs

Kelsey FryWater

Cost-share assistance is available from several sources for growers looking to implement improvements to best management practices. By Tacy Callies The names of the organizations and programs that provide funding to Florida citrus growers for best management practices (BMPs) projects — SWFWMD, FARMS, EQIP, etc. — can sound like a big bowl of alphabet soup. But in reality, they represent …

Research

Getting Water pH Correct in the Face of HLB

Ernie NeffCitrus Greening, HLB Management, Irrigation, Water

University of Florida (UF) researcher Kelly Morgan discusses a study of how citrus growers are adjusting irrigation water pH levels, and what pH levels seem to work best. The acid level of citrus irrigation water has become an important consideration since HLB was discovered in Florida groves in 2005. “Jim Graham (a fellow UF researcher) has been conducting a survey …

HLB

Bactericide Grower Trials for HLB ‘Extremely Variable’

Ernie NeffBactericides, HLB Management

Stephanie Slinski, Citrus Research and Development Foundation bactericide project manager, discussed grower trials on the use of bactericides for HLB at the Florida Citrus Growers’ Institute in Avon Park on April 4. She summarizes the presentation. “We have a series of field trials set up throughout Florida to test the efficacy of oxytetracycline and streptomycin just in the grower program,” …

weed management

Adding Weed Management Tools

Ernie NeffHerbicides

“I’m in the process of information gathering now,” says Ramdas Kanissery, a new weed scientist at the Southwest Florida Research and Education Center (SWFREC) in Immokalee. “I’m traveling to several groves and looking at the weed problems.” A trained agricultural chemist, Kanissery began working at the SWFREC at the end of October 2016. His expertise is in understanding the fate, …

Will You Be Ready for Postbloom Fruit Drop?

Tacy CalliesDiseases, PFD

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 …

Continuing a Legacy of Leadership

Tacy CalliesCitrus, Citrus Greening, Citrus Health Management Areas, Regulation

By Tacy Callies Callie Walker comes from a long line of Florida farmers. In 1875, her family set up homestead in Alva. Her father, uncles, grandfather and great-grandfather have been involved in a diversity of agricultural fields including citrus, cattle, sugar cane, vegetables and row crops. “My dad and his three brothers still run the family operation — citrus and …

PFD

Brazilian Discusses Postbloom Fruit Drop

Ernie NeffPFD

Geraldo Silva, a scientist with Fundecitrus in Brazil, shared thoughts about postbloom fruit drop (PFD) and its control at a recent seminar in Arcadia. Silva says Brazilians assume that the PFD inoculum is present in groves at all times, because consecutive days of rain can bring on a PFD outbreak 10 years after a previous outbreak. “We can have a …

A Holistic Approach to Production

Tacy CalliesCitrus Greening, PFD

By Owen “Sonny” Conner EDITOR’S NOTE: Citrus Industry magazine is providing a platform for growers to express their experiences and share their stories as we unite in the quest to fight HLB and bring the citrus industry back to a healthy condition. The views stated in this article are those of the author and do not represent those of AgNet …

Big Data Could Bring Big Benefits

Tacy CalliesCitrus

By Taylor Hillman The flood of technologies hitting the market hasn’t slowed since developers turned their attention to precision agriculture. One thing that remains common among these technologies is the use of data, which has been previously ignored or unmonitored. Now, developers are focusing on algorithms and patterns in data sets that are collected during farming practices that will improve …

English Named UF/IFAS Champion for 2016

Tacy CalliesCitrus

GAINESVILLE, Fla. — Hugh English, a key figure in the citrus industry known for his many contributions to the University of Florida/Institute of Food and Agricultural Sciences (UF/IFAS), has been honored as the 2016 UF/IFAS Champion. English was recognized Dec. 1 at the Gulf Citrus Growers Association luncheon in Fort Myers, Florida. The UF/IFAS Champion Award honors those who strengthen …

HLB Management in Brazil

Tacy CalliesCitrus

Observations and lessons learned from a recent citrus grower tour By Stephen H. Futch In June 2016, a group of Florida citrus growers and industry representatives embarked on a trip to tour the Brazilian citrus industry. The primary purpose of the trip was to learn more about how huanglongbing (HLB or citrus greening) is being managed in Brazil and how …

HLB management

Managing HLB Horticulturally

Ernie NeffCitrus Greening, HLB Management

University of Florida researcher Tripti Vashisth at Citrus Expo in August discussed the horticultural steps that can best help growers with managing HLB. She summarizes her presentation in an interview with Citrus Industry magazine. “The most important thing with managing HLB-affected groves is you want to fertilize your groves with good nutrition,” she says. She also emphasizes the need for …