HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Stewart, B. A. Articles by Clark, F. E. Search for Related Content PubMed Articles by Stewart, B. A. Articles by Clark, F. E. Agricola Articles by Stewart, B. A. Articles by Clark, F. E.

The Reliability of a Micro-Dumas Procedure for Determining Total Nitrogen in Soil¹

ABSTRACT

The reliability of a streamlined micro-Dumas procedure for total nitrogen in soils of different organic matter content was investigated. Results obtained were compared with values as measured by a Kjeldahl method commonly used for soils. The methods appeared equally satisfactory for soils containing below about 0.3% of N. Values for high organic matter soils and plant materials were substantially higher when measured by the Dumas method. The higher results from these materials were caused from incomplete combustion, which resulted in methane being formed and measured with the N₂.

¹ Contribution from the Soil and Water Conservation Research Division, ARS, USDA, in cooperation with the Colorado Agr. Exp. Sta. Scientific Journal Series 799.

² Soil Scientists and Microbiologist, USDA, Fort Collins, Colo., respectively.

Received for publication September 4, 1962. Accepted for publication September 25, 1962.