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Communications in Soil Science and Plant Analysis Volume 37, 2006 - Issue 7-8
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Original Articles

Comparison of Total Nitrogen Methods Applied for Histosols and Soil Horizons with High Organic Matter Content

Marcos Gervasio Pereira Soils Department, UFRRJ–Federal Rural University of Rio de Janeiro, Rio de Janeiro, BrazilCorrespondence[email protected] [email protected]
,
Ademar Espindula Jr. Soils Department, UFRRJ–Federal Rural University of Rio de Janeiro, Rio de Janeiro, Brazil
,
Gustavo Souza Valladares Embrapa Monitoramento por Satélite, Campinas, Brazil
,
Lúcia Helena Cunha dos Anjos Soils Department, UFRRJ–Federal Rural University of Rio de Janeiro, Rio de Janeiro, Brazil
,
Vinícius de Melo Benites Embrapa Solos, Rio de Janeiro, Brazil
&
Nivaldo Schultz Soils Department, UFRRJ–Federal Rural University of Rio de Janeiro, Rio de Janeiro, Brazil
Pages 939-943 | Received 02 Sep 2004, Accepted 29 Sep 2005, Published online: 05 Feb 2007
 
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Abstract

This study was carried out to correlate total nitrogen analyzed by two different methods: Kjeldahl (wet oxidation) and Perkin‐Elmer 2.400 Series II–CHN Mode (dry oxidation or combustion) in Histosols and soil surface horizons with high organic matter content, sampled in different regions of Brazil. A positive correlation (r=0.95**) was verified between the methods, showing that Kjeldahl, because of its simplicity, can be used to routinely determine total nitrogen content in the evaluated soils.

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