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Nitrogen Immobilisation and Microbial Biomass Build-Up Induced by Miscanthus x giganteus L. Based Fertilisers

  • Cultivation of Miscanthus x giganteus L. (Mis) with annual harvest of biomass could provide an additional C source for farmers. To test the potential of Mis-C for immobilizing inorganic N from slurry or manure and as a C source for soil organic matter build-up in comparison to wheat (Triticum aestivum L.) straw (WS), a greenhouse experiment was performed. Pot experiments with ryegrass (Lolium perenne L.) were set up to investigate the N dynamics of two organic fertilisers based on Mis at Campus Klein-Altendorf, Germany. The two fertilisers, a mixture of cattle slurry and Mis as well as cattle manure from Mis-bedding material resulted in a slightly higher N immobilisation. Especially at the 1st and 2nd harvest, they were partly significantly different compared with the WS treatments. The fertilisers based on Mis resulted in a slightly higher microbial biomass C and microbial biomass N and thus can be identified as an additional C source to prevent nitrogen losses and for the build-up of soil organic matter (SOM) in the long-term.

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Document Type:Article
Author:Michael Stotter, Florian Wichern, Ralf Pude, Martin Hamer
Parent Title (English):Agronomy
Article Number:1386
Number of pages:18
Place of publication:Basel
Publishing Institution:Hochschule Bonn-Rhein-Sieg
Date of first publication:2021/07/09
Copyright:© 2021 by the authors. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license.
Funding Information:The research was carried out within the framework of the INTERREG V A program Germany-Netherland—Co-financed by the European Regional Development Fund (ERDF) and the Dutch Ministry of Economic Affairs, MWIDE NRW and the provinces of Gelderland, Limburg and Noord-Brabant.
Keyword:C sequestration; C source; Miscanthus x giganteus L.; N immobilisation; microbial biomass C; microbial biomass N; organic N fertiliser; soil organic matter
Departments, institutes and facilities:Internationales Zentrum für Nachhaltige Entwicklung (IZNE)
Dewey Decimal Classification (DDC):6 Technik, Medizin, angewandte Wissenschaften / 63 Landwirtschaft / 630 Landwirtschaft und verwandte Bereiche
3 Sozialwissenschaften / 33 Wirtschaft / 333.7 Natürliche Ressourcen, Energie und Umwelt
Entry in this database:2021/07/12
Licence (German):License LogoCreative Commons - CC BY - Namensnennung 4.0 International