HLB Alters Nutrition Needs

Ernie NeffHLB Management, Nutrition

pests

Yield and fruit size are not good measurements of the nutrition needs of HLB-affected trees, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) researchers have discovered. “So we decided to go with something that’s fruit independent for the study,” says UF/IFAS scientist Arnold Schumann of the Citrus Research and Education Center at Lake Alfred. Schumann says he and … Read More

Beck Brothers Win 4R Advocate Award

Abbey TaylorNutrition

Beck Brothers Citrus of Winter Garden, Florida, is one of five winners of the Fertilizer Institute’s 4R Advocate Award for 2018. The company is the third winner from Florida and the first citrus grower to receive this national award. Beck Brothers was recognized for implementing 4R fertilizer management practices on the farm to increase production and reduce environmental impact. 4R … Read More

Nutrition and HLB

Ernie NeffHLB Management, Nutrition

morgan

University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) professor Kelly Morgan discusses the importance of nutrient leaf concentrations in HLB-infected citrus trees. “The leaf concentration (of nutrients) is reduced in all HLB trees,” he says. “We’ve known that for a long time, since HLB was found in Florida.” Morgan, who works at the Southwest Florida Research and Education … Read More

Spoon-Feeding Nutrition and Protecting New Flush for HLB

Ernie NeffHLB Management, Nutrition

Oranges

Spoon-feeding nutrients through root systems and protecting new leaf flushes are among ways Jude Grosser believes growers can maintain tree health in the face of HLB. Grosser, a University of Florida Institute of Food and Agricultural Sciences professor, is best known as a citrus breeder. Grosser said he started working with nutrition because “like any grower, I don’t like to … Read More

Foliar Nutrition Research Update

Tacy CalliesNutrition

By Rhuanito S. Ferrarezi, Alan L. Wright, Kelly T. Morgan, Philip A. Stansly, Monica Ozores-Hampton and Robert Ebel Huanglongbing (HLB) or citrus greening is endemic in Florida, resulting in billions of dollars of losses since the state’s first detection in 2005. The disease induces visual symptoms in leaves and branches, while severely impacting citrus fruit yield and quality. Fibrous root … Read More

Living with Yellow Dragon Disease

Tacy CalliesHLB Management, Nutrition

A grower nutrition survey reveals production practices for successful HLB management. By Tripti Vashisth and Christopher Vincent These days, in nearly every conversation about HLB, mineral nutrition comes up in some way. It seems that in a conversation between three people, there will be about four opinions on what, why, where and how to provide nutrition to citrus trees in … Read More

Water and Nutrient Tips for HLB

Ernie NeffHLB Management, Irrigation, Nutrition

crisp

  University of Florida Institute of Food and Agricultural Sciences researcher Davie Kadyampakeni offers water and nutrient management tips for HLB-affected trees. He was a presenter at a recent citrus nutrient management seminar in Immokalee hosted by multi-county citrus Extension agent Mongi Zekri. The seminar drew approximately 60 people to the Southwest Florida Research and Education Center. Kadyampakeni’s tips include … Read More

Pruning and Controlled-Release Fertilizer to Rehabilitate HLB Trees

Tacy CalliesNutrition, Production

By Tripti Vashisth and Troy Gainey Pruning is one of the oldest horticultural practices that changes the form and growth of a tree. The pruning process 1) adjusts tree shape and the ratio of framework to fruit-bearing shell of the canopy, 2) alters the shoot/root ratio and 3) changes the carbohydrate (food storage) status of the tree. Under Florida weather … Read More

Growers Focus on Constant Fertilization

Ernie NeffNutrition

nutrition

A grower survey conducted by University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) horticulturist Tripti Vashisth shows growers are managing their nutrition programs precisely. Vashisth discusses growers’ focus on providing a constant supply of nutrients, the amount of nutrients applied, use of humic and fulvic acids, and the number of psyllid sprays applied. “Their (growers’) philosophy for fertilization … Read More

Seniors May Reduce Dementia Risk with Citrus

Len WilcoxNutrition

Eat citrus to prevent dementia? A new study published in the British Journal of Nutrition suggests just that. It shows that older people who frequently eat citrus fruit were 23 percent less likely to get dementia. The study was also reported by the American Association of Retired Persons (AARP) on its Brain Health and Wellness website. The study was conducted on more than … Read More

Dual Treatment Tested for HLB Trees

Tacy CalliesCitrus, Nutrition

Severe pruning combined with enhanced foliar nutrition did not prove cost-effective. By Monica Ozores-Hampton, Fritz Roka, Robert Rouse and Pamela Roberts Citrus trees affected by huanglongbing (HLB) become diminished, weak and develop dieback resulting in reduced production. Decline in fruit yield ultimately prevents economically acceptable commercial citrus production. Pruning and spraying foliar nutritionals are two practices being considered to restore … Read More

App Identifies Nutrient Problems

Tacy CalliesNutrition

A Dinuba, California-based company specializing in plant nutrition has developed a phone app that helps growers identify and treat crop nutrient deficiencies. The company — Nutrient Technologies, Inc. — has been manufacturing and selling agricultural fertilizer products since 1986 in the Central Valley and throughout California, specializing in citrus crops. The app, called Crop Nutrient Advisor, shows photos of plants … Read More

An Update on UF/IFAS-Grower Citrus Nutrition Trials

Tacy CalliesNutrition

By Tripti Vashisth Mineral nutrition plays an essential role in a plant’s life cycle and is critical for its growth and development. Since the early 19th century, the importance of mineral nutrition for plants has been recognized, and fertilization has become an important aspect of crop production. At least 17 mineral nutrients are considered essential for plants. These include carbon, … Read More

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 … Read More

Brassinosteroid and Nutrient Uptake Studies for HLB

Ernie NeffCitrus Greening, HLB Management, Nutrition

HLB

Tripti Vashisth, a University of Florida/Institute of Food and Agricultural Sciences horticulturist, reports on brassinosteroid and nutrient uptake studies aimed at alleviating HLB symptoms. She reported on these studies at a recent HLB Grower Day summarizing scientific presentations made at an international HLB research conference. The brassinosteroid (a plant growth regulator) study was conducted at the University of Havana in … Read More

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 … Read More

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 … Read More

Sneak Peek: May 2017 Citrus Industry Magazine

Tacy CalliesNutrition, Sneak Peek

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. … Read More

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 … Read More

Ground Cover Management Can Improve Citrus Nutrition

Kelsey FryNutrition

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 … Read More