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This article in SSSAJ

  1. Vol. 44 No. 5, p. 1011-1016
     
    Received: Aug 13, 1979
    Published: Sept, 1980


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doi:10.2136/sssaj1980.03615995004400050028x

Extraction of Phosphatase, Urease, Proteases, Organic Carbon, and Nitrogen from Soil1

  1. Paolo Nannipieri,
  2. Brunello Ceccanti,
  3. Stefano Cervelli and
  4. Emilio Matarese2

Abstract

Abstract

Extractions of three soils at different incubation times demonstrate that 0.14M sodium pyrophosphate at pH 7.1 extracts phosphatase, urease, casein, and benzoylarginamide hydrolyzing proteases. Extraction yields of phosphatase and casein-hydrolyzing proteases are remarkably high. The most efficient length of extraction depends both on the type of soil and on the selected enzyme.

Correlation analyses of extracted enzymes and extracted C and organic N content generally show a significant correlation (p = 0.05 and 0.01).

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