Cited by 106Soil Carbon and Nitrogen DynamicsMycorrhizal Fungi and Plant InteractionsAgricultural Science and Fertilization

The immobilization of nitrogen by straw decomposing in soil.

Cheshire, M. V., Bedrock, C. N., Williams, B. L., Chapman, S. J., Solntseva, I., Thomsen, I.·1999·European Journal of Soil Science

Abstract

Summary Immobilization of nitrogen (N) in decomposing straw varies between soils, and the objective of this study was to identify the mechanisms responsible. Internode segments of wheat straw were incubated in Denmark and in Scotland in arable soils fertilized with NH 4 NO 3 , labelled with 15 N, for periods up to 1 year. Straw was recovered from the soils periodically and analysed for microbial biomass and different forms of N using chemical methods and CPMAS 15 N NMR spectroscopy. The total N content of the straw increased, as long as the soil was not too wet, such that there was overall immobilization. This was accompanied by a rapid increase in the content of amino acid N and to a lesser extent of glucosamine N and a concomitant decrease in the carbohydrate content of the straw. Using direct and plate counts for bacterial and ergosterol content for fungal estimation, we found that fungal biomass was much greater than that of bacteria. This correlated with the forms of N in the straw as determined by CPMAS 15 N NMR, which showed spectra that were more typical of fungi than of bacteria. It seems that immobilization of N is primarily caused by fungi as they decompose the straw.

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Crossref · 10.1046/j.1365-2389.1999.00238.x

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Authors
Cheshire, M. V., Bedrock, C. N., Williams, B. L., Chapman, S. J., Solntseva, I., & Thomsen, I.
Affiliations
All-Russian Research Institute of Agricultural Microbiology (RU)
Corresponding author
Williams, B. L.
Venue
European Journal of Soil Science
Publisher
Wiley
Published
1999-07
Volume
50
Issue
2
Pages
329-341
ISSN
  • 1351-0754 (ISSN-L)
  • 1365-2389
OpenAlex
W2105998546
Cited by
106
References
36
Citations by year
2026: 2 · 2025: 3 · 2024: 9 · 2023: 6 · 2022: 7 · 2021: 7 · 2020: 5 · 2019: 5 · 2018: 2 · 2016: 2 · 2015: 3 · 2014: 3 · 2013: 4 · 2012: 4
FWCI
3.83
Type
journal article
Language
en
Open access
closed
Locations
European Journal of Soil Science (publishedVersion)
Funders
Royal Society
Topics
  • Life Sciences › Agricultural and Biological Sciences › Soil Science › Soil Carbon and Nitrogen Dynamics
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Mycorrhizal Fungi and Plant Interactions
  • Life Sciences › Agricultural and Biological Sciences › Soil Science › Agricultural Science and Fertilization
Keywords
nitrogen immobilization, straw decomposition, wheat straw, soil microbes, fungal biomass, bacterial biomass, amino nitrogen, soil moisture, ergosterol, soil nitrogen forms

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