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Phosphorus Index Test Form

Rao S. Mylavarapu, William d'Angelo, and Nancy Wilkinson

Release Date: 2/7/2024

Reviewed At: 8/12/2025

Agriculture

Abstract

This document is the Phosphorus Index Test Form (SL394), one of the Soil Testing Information Sheets (Submission Forms) used by the UF/IFAS Extension Soil Testing Laboratory. The sheet provides details about how to collect samples and testing fees. 

About this Publication

This document is SL394, one of a series of the Department of Soil, Water, and Ecosystem Sciences, UF/IFAS Extension. Original publication date November 2013. Revised August 2019 and January 2024. Visit the EDIS website at https://edis.ifas.ufl.edu for the currently supported version of this publication.

About the Authors

Rao S. Mylavarapu, professor, Department of Soil, Water, and Ecosystem Sciences; William d'Angelo, lab manager, UF/IFAS Extension Soil Testing Lab; and Nancy Wilkinson, assistant manager, UF/IFAS Extension Soil Testing Lab; UF/IFAS Extension, Gainesville, FL 32611.

Authors

Rao Mylavarapu
Rao Mylavarapu
Contact
Specialist
University of Florida

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

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William D'Angelo
William D'Angelo

former lab manager, UF/IFAS Extension Soil Testing Lab, Gainesville, FL

Nancy Wilkinson
Nancy Wilkinson
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staff
University of Florida

chemist and assistant lab manager/QA officer, UF/IFAS Analytical Services Laboratories, Gainesville, FL

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Contacts

Paul White
Paul White
Contact
Specialist
University of Florida

associate professor, soil science, and coordinator, agricultural nutrient management research, UF/IFAS Department of Soil, Water, and Ecosystem Sciences, Gainesville, FL

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Also available in

Spanish

Publication #SL394

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