Share

Soil Testing Methods

List of the standard soil testing methods used by the Agricultural Analytical Services Lab.
AnalyteMethodReference
pH Water Eckert, D. and J.T. Sims. 2011. Recommended Soil pH and Lime Requirement Tests. p. 19-25. In J.T. Sims and A. Wolf (eds.) Recommended Soil Testing Procedures for the Northeastern United States. Northeast Regional Bulletin #493. 3rd edition. Agricultural Experiment Station, University of Delaware, Newark, DE.
Lime requirement Mehlich buffer Mehlich, A. 1976. New buffer pH method for rapid estimation of exchangeable acidity and lime requirement of soils. Commun. Soil Sci. Plant Analysis. 7, 637-652.
Extractable P, K, Ca and Mg Mehlich 3 (ICP) Wolf, A.M. and D.B. Beegle. 2011. Recommended soil tests for macronutrients. p. 39-47. In J.T. Sims and A. Wolf (eds.) Recommended Soil Testing Procedures for the Northeastern United States. Northeast Regional Bulletin #493. 3rd edition. Agricultural Experiment Station, University of Delaware, Newark, DE.
Cation Exchange Capacity (CEC) Summation Ross, D. and Q. Ketterings. 2011. Recommended soil tests for determining soil cation exchange capacity. p. 75-86. In J.T. Sims and A. Wolf (eds.) Recommended Soil Testing Procedures for the Northeastern United States. Northeast Regional Bulletin #493. 3rd edition. Agricultural Experiment Station, University of Delaware, Newark, DE.
Organic matter Loss on Ignition Schulte, E.E. and B. Hoskins. 2011. Recommended Soil Organic Matter Tests. p. 63-74. In J.T. Sims and A. Wolf (eds.) Recommended Soil Testing Procedures for the Northeastern United States. Northeast Regional Bulletin #493. 3rd edition. Agricultural Experiment Station, University of Delaware, Newark, DE.
Total C Combustion Nelson, D.W. and L.E. Sommers. 1996. Total Carbon, Organic Carbon, and Organic Matter. p 961-1010. In D.L. Sparks (ed). Methods of Soil Analysis, Part 3. Chemical Methods. Soil Science Society of America Book Series Number 5. American Society of Agronomy, Madison, WI.

Pella, E. 1990. Elemental organic analysis. Part 1. Am. Lab 22: 116-125
Nitrate N Specific Ion Electrode Griffin, G., W. Jokela, D. Ross, D. Pettrinelli, T. Morris, and A. Wolf. 2011. Recommended Soil Nitrate-N Tests. p. 27-38. In J.T. Sims and A. Wolf (eds.) Recommended Soil Testing Procedures for the Northeastern United States. Northeast Regional Bulletin #493. 3rd edition. Agricultural Experiment Station, University of Delaware, Newark, DE.
Ammonium N Specific Ion Electrode Mulvaney, R.L. 1996. Nitrogen-Inorganic Forms. p. 1123-1200. In D.L. Sparks (ed). Methods of Soil Analysis, Part 3. Chemical Methods. Soil Science Society of America Book Series Number 5. American Society of Agronomy, Madison, WI.
Total N Combustion Bremner, J.M.. 1996. Nitrogen-Total. p. 1085-1121. In D.L. Sparks (ed). Methods of Soil Analysis, Part 3. Chemical Methods. Soil Science Society of America Book Series Number 5. American Society of Agronomy, Madison, WI.

Pella, E. 1990. Elemental organic analysis. Part 1. Am. Lab 22: 116-125
Soluble Salts Electrical Conductivity (1:2) Gartley, K. 2011. Recommended Soluble Salts Tests. p. 87-94. In J.T. Sims and A. Wolf (eds.) Recommended Soil Testing Procedures for the Northeastern United States. Northeast Regional Bulletin #493. 3rd edition. Agricultural Experiment Station, University of Delaware, Newark, DE.
Total Sorbed Cu, Zn, Pb, Ni, Cd, Cr, Mo EPA Method 3050B/3051 + 6010 USEPA. 1986. Test Methods for Evaluating Solid Waste. Volume IA: 3rd Edition. EPA/SW-846. National Technical Information Service. Springfield, Va.
Particle Size Analysis Hydrometer Method Gee, G.W. and J.W. Bauder. 1986. Particle size analysis. p. 383-411. In A. Klute (ed.) Methods of Soil Analysis. Part 1. Physical and Mineralogical Methods. Agronomy Monograph #9 (2nd Edition). Amer. Soc. Agron. Madison, WI.
As EPA Method 3050B/3051 + 6010 USEPA. 1986. Test Methods for Evaluating Solid Waste. Volume IA: 3rd Edition. EPA/SW-846. National Technical Information Service. Springfield, Va.
Se EPA Method 3050B/3051 + 6010 USEPA. 1986. Test Methods for Evaluating Solid Waste. Volume IA: 3rd Edition. EPA/SW-846. National Technical Information Service. Springfield, Va.
Hg EPA Method 7473 USEPA. 1986. Test Methods for Evaluating Solid Waste. Volume IA: 3rd Edition. EPA/SW-846. National Technical Information Service. Springfield, Va.
Calcium carbonate equivalency (CCE) ASTM Method C 25 Standard Test Methods for Chemical Analysis of Limestone, Quicklime, and Hydrated Lime, ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA