HLB

Growers Share HLB Frustrations and Experiences

Ernie NeffBactericides, HLB Management, Psyllids

Growers shared their frustrations and experiences with HLB at a May 4 grower roundtable meeting in Wauchula. Event co-host Steve Smith, executive director of Peace River Valley Citrus Growers Association, summarizes the discussions. “A lot of the growers were talking about fertigation and how much, and what’s working for them on the short-term basis as far as tree health goes,” …

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 …

Insight on Improved Management of HLB-Affected Trees

Josh McGillIrrigation, Nutrition

Recent studies shed light on foliar nutrient and irrigation practices. By Kelly T. Morgan and Said Hamido Most citrus growers are well aware that citrus greening (HLB) is one of the most devastating citrus diseases in many parts of the world. The disease is widespread in Florida, Texas, Brazil, Mexico and other major production areas, causing significant concerns about the …

Why Bicarbonates Matter for HLB Management

Josh McGillNutrition

By Jim Graham and Kelly Morgan Huanglongbing (HLB), greening and yellow shoot are names for the most devastating citrus disease in the world. Symptoms of HLB include a distinctive chlorotic mottle on fully expanded leaves. Infected shoots are stunted, and branches gradually die back as the symptoms appear in other sectors of the tree canopy. HLB reduces fruit size, weight …

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 …

Citrus Canker Management for 2017

Kelsey FryDiseases

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 …

Buddha’s Hand Citron Could Play Role in Canker Resistance Breeding

Kelsey FryCitrus, Diseases

By Naveen Kumar, R.C. Ebel and P.D. Roberts Citrus canker became endemic in Florida after several introductions and eradication programs dating back to 1915. The citrus industry struggles for an effective, permanent program. Canker is an expensive disease due to the need to increase the number of sprays and products applied. Canker also causes enormous economic losses due to fruit …

leprosis

Researcher Provides Leprosis Update

Ernie NeffDiseases, Research

The citrus viral disease leprosis, found briefly in Florida in the 1960s, is now in South America, Central America and Mexico. Ron Brlansky, University of Florida professor emeritus, provided an update on the disease at a March OJ Break in Lake Alfred. “It (leprosis) causes fruit spotting, leaf spots, leaf drop, fruit drop and even some major twig dieback of …

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,” …

Nutrition, PFD

Grower Optimism on Tree Health

Ernie NeffNutrition, PFD

Several growers participating in a forum in Sebring on March 9 said trees are looking better this year than last year. They also agreed that postbloom fruit drop (PFD), a major problem last season, has not yet been a big issue this season. Grower Aaron Himrod of Himrod Citrus Nursery, a forum participant, says good tree condition and high fruit …

Psyllids, PFD

New Highlands President on PFD, Psyllids and More

Ernie NeffHLB Management, PFD

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 …

HLB

Pathologist to Tackle HLB and Other Diseases

Ernie NeffCitrus Greening, HLB Management, PFD

Ozgur Batuman, a new citrus plant pathologist at the Southwest Florida Research and Education Center, discusses the diseases he’ll work on. “I am planning to of course tackle some of the more pressing issues that citrus growers are facing these days, one of them being huanglongbing (HLB), and confronting its vector, Asian citrus psyllid,” he says. He will also research …

Micronutrients

Micronutrients for Root Health and HLB

Ernie NeffCitrus Greening, HLB Management, Nutrition

University of Florida researcher Jude Grosser, best known for his work on citrus breeding, has become a champion of micronutrients to improve root health and battle HLB. At a recent Highlands County OJ Break, he discussed the use of micronutrients, including why he got involved. “I guess just like any farmer, you don’t like watching your plants get sick and …

PFD

Florida on Cusp of Potential PFD Season

Ernie NeffPFD

The timing was perhaps impeccable for a seminar in Arcadia on February 8 that focused on postbloom fruit drop (PFD). Rain had fallen on Central Florida the night before, and some bloom is already on trees. That combination of rain and bloom has led to major PFD outbreaks in recent years. “There’s some bloom out there already,” says University of …

Freeze Damage Symptoms and Recovery for Citrus

Tacy CalliesFreeze Protection, Weather

By Mongi Zekri, Chris Oswalt, Steve Futch and Laurie Hurner The extent of cold injury to citrus depends on a number of factors, and its expression may occur over an extended period of time. Factors responsible for freeze damage include minimum temperature, duration of freezing temperatures and stage of tree acclimation. Susceptibility of trees to freezing temperatures can also be …

Effective and Economical Psyllid Spray Programs

Tacy CalliesCitrus, Citrus Greening, HLB Management

By Phil Stansly Effective control of Asian citrus psyllid (ACP) has been a challenge for many Florida growers these last two years. Possible explanations include warmer, wetter weather in winter, fewer insecticide sprays being applied and a possible increase in insecticide resistance. There is little doubt that weather-induced flush the last two winters has provided extra food and refuge for …

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 …

Valencias PFD

Growers Discuss Bactericides, Nutrition and More

Ernie NeffBactericides, Nutrition, PFD

A handful of citrus growers discussed January bloom and postbloom fruit drop (PFD), bactericides, nutrition and replanting strategies at a grower forum in Sebring on January 12. Laurie Hurner, Highlands County Extension director and citrus Extension agent, summarizes the discussions. “We are looking at areas where we’ve got bloom coming on. That is a little bit nerve-wracking for January,” Hurner …

florida

Small Changes in USDA Citrus Crop Forecast

Daniel CooperCitrus, Crop Forecast

Mark Hudson, of the U.S. Department of Agriculture’s (USDA) National Agriculture Statistics Service in Washington, D.C., delivered the latest citrus crop forecast today. Florida Valencia oranges dropped slightly from 36 million boxes in December to 35 million boxes in January. Hudson explained this was due to fruit drop. White grapefruit dropped from 2 million boxes to 1.7 million boxes. Tangerines and tangelos …

Sneak Peek: January Citrus Industry Magazine

Tacy CalliesCitrus

A new year is just around the corner and so is the next issue of Citrus Industry magazine. The January issue features a cover story on Callie Walker, chief of the Bureau of Pest Eradication and Control for the Florida Department of Agriculture. Learn about Walker’s deep roots in citrus and what she is doing about the abandoned grove problem. …