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Publication #SL253

Nutrition of Florida Citrus Trees, 2nd Edition.1

Thomas A. Obreza and Kelly T. Morgan, Editors2

Nutrition of Florida Citrus Trees, 2nd Edition is an update of UF/IFAS Bulletin SP169, which provided guidelines for Florida citrus fertilization since 1995. The objective of the original edition was to provide background information and recommendations to develop a sound citrus nutrition program that optimizes financial returns while sustaining yields and maintaining soil and water quality. The second edition maintains that objective as it incorporates the findings of numerous citrus nutrition research projects conducted since the mid-1990s.

Updated guidelines presented herein reflect changes in fertilizer recommendations that have occurred as the Florida citrus industry has entered the era of Best Management Practices (BMPs). In addition to the original chapters, this publication adds chapters on 1) production areas and soil characteristics, 2) using precision agriculture to manage citrus nutrition, 3) irrigation and nutrient management, and 4) environmental issues and BMPs.

Supplemental information on subjects related to citrus nutrition appear in extensive appendices. Color plates depicting nutrient deficiencies and toxicities and a key to mineral deficiency symptoms in citrus are included to aid in visual analysis of tree nutritional status.

A copy of Nutrition of Florida Citrus Trees, 2nd Edition can be downloaded into Adobe Acrobat Reader by clicking on this link or the PDF icon on the top right corner of the page. If you do not have Reader software, you can download it for free by clicking here.



This document is SL253, one of a series of the Department of Soil and Water Sciences, UF/IFAS Extension. Original publication date October 2007. Reviewed June 2017. Visit the EDIS website at


Thomas A. Obreza, professor; and Kelly T. Morgan, assistant professor; Department of Soil and Water Sciences, UF/IFAS Southwest Florida Research and Education Center, Immokalee, FL 34142.

The Institute of Food and Agricultural Sciences (IFAS) is an Equal Opportunity Institution authorized to provide research, educational information and other services only to individuals and institutions that function with non-discrimination with respect to race, creed, color, religion, age, disability, sex, sexual orientation, marital status, national origin, political opinions or affiliations. For more information on obtaining other UF/IFAS Extension publications, contact your county's UF/IFAS Extension office.

U.S. Department of Agriculture, UF/IFAS Extension Service, University of Florida, IFAS, Florida A & M University Cooperative Extension Program, and Boards of County Commissioners Cooperating. Nick T. Place, dean for UF/IFAS Extension.