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Phosphorus Index Test Form

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

This document is the Phosphorus Index Test Form used by the UF/IFAS Extension Analytical Services Laboratories. The sheet provides details about collecting samples and testing fees. To download the form, visit

The Phosphorus Index Test Form must accompany soil samples submitted to the UF/IFAS Extension Soil Testing Laboratory. This form allows for the following tests:

  1. Standard Soil Fertility Test and Phosphorus Capacity Index Test (pH, lime requirement, K, Ca, and Mg)
  2. Phosphorus Capacity Index Test (Mehlich-3 extraction method) [pH, P, Al, Fe (capacity index of soil)]

Publication #SL394

Date: 8/29/2019

Related Experts

Mylavarapu, Rao S.

University of Florida

  • Critical Issue: Agricultural and Food Systems
Fact Sheet

About this Publication

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

About the Authors

Rao S. Mylavarapu, professor, Department of Soil and Water Science; 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.


  • Rao Mylavarapu