Guidelines for the determination of organic carbon and nitrogen stocks and their variations in mineral soils at field scale

2021 ◽  
Keyword(s):  
Organic Carbon ◽  
Field Scale ◽  
Carbon And Nitrogen ◽  
Mineral Soils ◽  
Carbon And Nitrogen Stocks

Studies on the Carbon and Nitrogen Cycles in the soil. II. The Extraction of the Organic Matter of the Soil With Alkali

1930 ◽  
Vol 20 (3) ◽  
pp. 460-477 ◽  
Author(s):  
C. W. B. Arnold ◽  
H. J. Page
Keyword(s):  
Organic Matter ◽  
Organic Carbon ◽  
Caustic Soda ◽  
Organic Manure ◽  
Humic Matter ◽  
Colour Intensity ◽  
Alkali Extraction ◽  
Carbon And Nitrogen ◽  
Manurial Treatment

The alkali extraction of the organic matter from the soils of certain plots of the classical permanent experiments on Barnfield and Broadbalk at Rothamsted, receiving respectively organic manure, artificial fertilisers and no manurial treatment, has been studied, together with a colorimetric examination of the extracts for the comparison of the content of humic matter.It is shown that, in spite of the different cultural and manurial treatments which the different plots have received, there is a marked similarity in the properties of the organic matter of these soils, with regard to its behaviour on extraction with cold and hot dilute caustic soda, and the colour intensity of the organic matter in the extracts.The methods used for the determination of organic carbon in the soils and their extracts are noted in an Appendix.The results discussed in this paper are further considered, along with those in the two next following Parts (III and IV), in Part V of this series, in their bearings on the origin of the humic matter of the soil.

scholarly journals Long‐term rotation diversity and nitrogen effects on soil organic carbon and nitrogen stocks

age ◽  
2020 ◽  
Vol 3 (1) ◽  
Author(s):  
Marty R. Schmer ◽  
Virginia L. Jin ◽  
Brian J. Wienhold ◽  
Sophia M. Becker ◽  
Gary E. Varvel
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Carbon And Nitrogen ◽  
Carbon And Nitrogen Stocks

Small-scale spatial patterns of soil organic carbon and nitrogen stocks in permafrost-affected soils of northern Siberia

Geoderma ◽  
2018 ◽  
Vol 329 ◽  
pp. 91-107 ◽  
Author(s):  
Alevtina Evgrafova ◽  
Tilman René de la Haye ◽  
Ina Haase ◽  
Olga Shibistova ◽  
Georg Guggenberger ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Spatial Patterns ◽  
Small Scale ◽  
Northern Siberia ◽  
Carbon And Nitrogen ◽  
Carbon And Nitrogen Stocks
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