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An understanding of soil testing is an important part of preventing excess fertilizer applications that can potentially impact the environment and ensuring commercially viable yields and aesthetic, healthy landscapes. This 4-page fact sheet describes the process UF/IFAS soil scientists used to develop a predictive and/or diagnostic soil test that can be depended on by commercial agricultural and horticultural producers as well as homeowners and can provide accurate nutrient recommendations or diagnose nutrient imbalances for crops or plants. Written by George Hochmuth, Rao Mylavarapu, and Ed Hanlon, and published by the UF Department of Soil and Water Science, October 2014.
SL409/SS622: Developing a Soil Test Extractant: The Correlation and Calibration Processes (ufl.edu)
References
Peck, T. R., J. T. Cope, and D. A. Whitney (eds.). 1977. Soil testing: Correlating and interpreting the analytical results. Amer. Soc. Agron. Special Publ. No. 29. Amer. Soc. Agron., Madison, WI. https://doi.org/10.2134/asaspecpub29
Mitchell, C. C., and R. Mylavarapu. 2014. "Soil Test Correlation and Calibration for Recommendations." Soil Test Methods from the Southeastern United States. Southern Cooperative Series Bulletin No. 419. USDA-SERA-IEG-6. ISBN 1-58161-419-5. http://www.clemson.edu/sera6/MethodsManualFinalSERA6.pdf.
Mylavarapu, R. S. 2009. "Diagnostic nutrient testing." Hort Technology 20: 19-22. https://doi.org/10.21273/HORTTECH.20.1.19