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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
First Page:1386
Place of publication:Basel
Publishing Institution:Hochschule Bonn-Rhein-Sieg
Date of first publication:2021/07/09
© 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.
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