Nutrient Management Recommendations Based on Mehlich-3 Extractant for Calcareous Soils in Miami-Dade County

Yuncong Li , , Rao Mylavarapu, Kelly Morgan, Guodong Liu, Jonathan Crane, Qingren Wang, Henrique Mayer, Jeff Wasielewski, Laura Vasquez, Qingchun Liu, and

Release Date: 8/15/2023

Reviewed At: 8/5/2026

DOI: 10.32473/EDIS-SS717-2023

Agriculture

Abstract

This factsheet provides information about the history of soil testing calibrations and justification for recommending extraction of soil nutrients using Mehlich-3 for calcareous soils in Miami-Dade County. The dominant soils from this County have an extraordinarily high concentration of calcium resulting in high pH. This document also includes UF/IFAS approved Mehlich-3 extractant-based testing interpretations and recommendations for these soils. The purpose of this publication is to elucidate an appropriate approach for analyzing the unique calcareous soils from Miami-Dade County for plant available nutrients. The target audiences are Extension agents, agronomists at soil testing laboratories, crop advisors, growers, representatives of the state and local agencies, and others concerned about soil testing and plant analysis in Miami-Dade County.

About this Publication

This document is SL504, one of a series of the UF/IFAS Department of Soil, Water, and Ecosystem Sciences. Original publication date August 2023. Visit the Ask IFAS website at https://ask.ifas.ufl.edu/ for the currently supported version of this publication.

How to Cite

Li, Y., Zhu, Q., Mylavarapu, R., Morgan, K., Liu, G., Crane, J., Wang, Q., Mayer, H., Wasielewski, J., Vasquez, L., Liu, Q., & Olczyk, T. (2023). Nutrient Management Recommendations Based on Mehlich-3 Extractant for Calcareous Soils in Miami-Dade County. EDIS, 2023(4). https://doi.org/10.32473/edis-ss717-2023

Authors

Yuncong Li

Contact

Specialist

University of Florida

professor, soil and water quality, Department of Soil, Water, and Ecosystem Sciences, UF/IFAS Tropical Research and Education Center, Homestead, FL

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Qiang Zhu

former graduate student, Department of Soil, Water, and Ecosystem Sciences, UF/IFAS Tropical Research and Education Center, Homestead, FL

Rao Mylavarapu

Specialist

University of Florida

professor and Extension specialist, Department of Soil, Water, and Ecosystem Sciences, Gainesville, FL

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Kelly Morgan

Specialist

University of Florida

professor emeritus, soil fertility and water management, UF/IFAS Department of Soil, Water, and Ecosystem Sciences, Gainesville, FL

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Guodong Liu

Specialist

University of Florida

professor, crop nutrition, UF/IFAS Department of Horticultural Sciences

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Jonathan Crane

Specialist

University of Florida

professor emeritus, tropical fruit crop specialist, Department of Horticultural Sciences, UF/IFAS Tropical Research and Education Center, Homestead, FL

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Qingren Wang

County agent

University of Florida

Extension agent IV, Ph.D., vegetable crops, UF/IFAS Extension Miami-Dade County, Homestead, FL

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Henrique Mayer

County agent

University of Florida

commercial urban horticulture Extension agent IV, UF/IFAS Extension Miami-Dade County, Homestead, FL

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Jeff Wasielewski

County agent

University of Florida

Extension agent II, commercial tropical fruit crops, UF/IFAS Extension Miami-Dade County

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Laura Vasquez

County agent

University of Florida

urban horticulture Extension agent, UF/IFAS Extension Miami-Dade County

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Qingchun Liu

County agent

University of Florida

Extension agent I, Ph. D., commercial horticulture, UF/IFAS Extension Miami-Dade County, Homestead, FL

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Teresa Olczyk

retired county Extension director and Extension agent IV, M.S., agriculture/commercial ornamental horticulture, UF/IFAS Miami-Dade County Extension Homestead FL

Publication #SL504