Citrus Greening (Huanglongbing, HLB)

The Economics of Planting New Citrus Groves in Florida in the Era of HLB

Ariel Singerman, Marina Burani-Arouca, and Stephen H. Futch

Nutrition and Irrigation Management for Florida HLB-Affected Trees

Tripti Vashisth, Davie Kadyampakeni, and Jamie D. Burrow

This is a two-sided poster. To improve production of huanglongbing (HLB) affected trees, nutrition, irrigation, and soil pH should be considered together, because each can influence the efficacy of the others in overcoming the effects of HLB on tree performance.

Tree Assistance Program For Florida Citrus Greening

Ariel Singerman and Fritz Roka

Irrigation Management of HLB-Affected Trees

Davie Kadyampakeni, Kelly Morgan, Mongi Zekri, Rhuanito Ferrarezi, Arnold Schumann, and Thomas A. Obreza

The chapter on irrigation management of citrus is largely taken from guidelines on trees prior to citrus greening provided in Chapter 9 of SL253 (https://edis.ifas.ufl.edu/ss478). A section has been added to cover recent findings on water use of trees affected by citrus greening and the impact this would have on irrigation management considerations. This document is SL445, one of a series of the Department of Soil and Water Sciences, UF/IFAS Extension. Original publication date October 2017.

Impact of Citrus Greening on Citrus Operations in Florida

Ariel Singerman and Pilar Useche

Huanglongbing (HLB; Citrus Greening) and Nutrient Deficiency Identification

Tripti Vashisth, Megan M. Dewdney, and Jamie D. Burrow

Huanglongbing (HLB) is a bacterial disease that is spread by an insect, the Asian citrus psyllid. This 2-page fact sheet explains how to tell the difference between HLB symptoms and symptoms from nutrient deficiencies.

2024–2025 Florida Citrus Production Guide: Huanglongbing (Citrus Greening)

Megan M. Dewdney, Tripti Vashisth, and Lauren M. Diepenbrock

2023–2024 Florida Citrus Production Guide

Use of Gibberellic Acid Treatments to Improve Health and Yield of HLB-Affected Sweet Orange Trees (Part 1 of 2)

T. Vashisth and A. Singerman

This publication discusses gibberellic acid use in citrus. Written by T. Vashisth and A. Singerman, and published by the UF/IFAS Horticultural Sciences Department, February 2023.

Individual Protective Covers (IPCs) for Young Tree Protection from the HLB Vector, the Asian Citrus Psyllid

Fernando Alferez, Ute Albrecht, Susmita Gaire, Ozgur Batuman, Jawwad Qureshi, and Mongi Zekri

Psyllid exclusion is the most effective strategy to keep citrus trees free from HLB. Individual protective covers (IPCs) are a novel strategy based on psyllid exclusion of individual trees using a protective mesh bag. This new 3-page publication summarizes the knowledge we have accrued from our 3-year-long field studies using the IPC system and provides recommendations that can help with effective use of this technology. By F. Alferez, U. Albrecht, S. Gaire, O. Batuman, J. Qureshi, and M. Zekri.

Floridians' Perceptions of GMOs: GMOs and Florida Citrus

Nicole M. W. Dodds, Laura M. Gorham, and Joy N. Rumble

A UF/IFAS numbered Fact Sheet. Published by Citizen awareness of food systems and the environment

Use of Gibberellic Acid Treatments to Improve Health and Yield of HLB-Affected Sweet Orange Trees: Concerns and Considerations (Part 2 of 2)

T. Vashisth

This publication discusses fruit quality and gibberellic acid use in citrus. Written by T. Vashisth, and published by the UF/IFAS Horticultural Sciences Department, February 2023.

Use of Gibberellic Acid to Improve Health and Productivity of HLB-Affected ‘Valencia’ Trees

Tripti Vashisth

The goal of this publication is to provide the latest gibberellic acid (GA) use recommendation to Florida citrus growers. Recently, a multiyear field trial conducted on ‘Valencia’ has shown that GA applied monthly from September to January can improve yield of HLB-affected trees on average by 30% compared to untreated trees. Although GA treatment cannot eradicate the pathogen that causes HLB in affected citrus trees, the current GA application recommendation can provide growers an alternative remedy to alleviate HLB symptoms and ameliorate the production issues that are associated with the disease, including yield decline, reduced fruit size, increased preharvest fruit drop, and rapid tree health decline, until a cure for HLB or complete HLB-resistant cultivars can be developed. Written by Tripti Vashisth, and published by the UF/IFAS Horticultural Sciences Department, April 2023.

2022–2023 Florida Citrus Production Guide: Planting New Citrus Groves in Florida in the Era of Citrus Greening

Ariel Singerman, Marina Burani-Arouca, and Stephen H. Futch

2022–2023 Florida Citrus Production Guide