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This article in SSSAJ

  1. Vol. 3 No. C, p. 158-161
     
    Published: 1939


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doi:10.2136/sssaj1939.036159950003000C0031x

A Comparison of the Dry Combustion and the Rapid Dichromate Titration Methods for Determining Organic Matter in Soil1

  1. G. M. Browning2

Summary

Summary

A comparison was made of the dry-combustion and the Wakley and Black rapid-titration methods for determining organic matter in fifty soil samples of widely different origin, physical characteristics, and organic-matter content, collected in connection with infiltration studies.

After correcting the rapid titration method by an appropriate factor certain of the soils still show considerable variation from the data obtained by the dry-combustion method. While dry-combustion is probably the most reliable method available at present for determining the organic-matter content of soils, the rapid-titration method gives valuable approximate results even though the soils vary widely in origin, physical characteristics, and organic-matter content.

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