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Nitrogen: Recent Developments in Related Microbial Processes

  • Ja. Van Veen
Conference paper

Abstract

Nitrogen is a key nutrient for the production of crops on earth. More than any other, it is the growth-limiting nutrient for plant and therefore, it has been added to arable land as fertiliser in enormous quantities, all over the world. Due to its (bio)chemical “flexibility” and its mobility, nitrogen is easily lost to the environment, where it has become a major polluting element in the atmosphere, water and soil. Thus, sound management of the nitrogen resources is a prerequisite for sustainable agriculture and for a clean environment. This calls for understanding of the fate of nitrogen in plant/soil systems. Here, three examples of recent developments in research on nitrogen will briefly be discussed, with emphasis on microbiological processes. These cases are the modelling of nitrogen flow through the soil food web, the use of molecular biological techniques for the identification of ammonium-oxidising bacteria and the mechanisms of host recognition by symbiotic nitrogen-fixing bacteria. They also exemplify progress that has been made in the science on terrestrial ecosystems during the period of the present OECD programme on Biological Resource Management, progress that is needed to develop future strategies for proper management of the biological nitrogen resources.

Keywords

Nitrogen Fixation Atmospheric Nitrogen Nitrify Bacterium Molecular Biological Technique Nitrogen Resource 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • Ja. Van Veen
    • 1
  1. 1.Centre for Terrestrial EcologyNetherlands Institute of EcologyHeterenThe Netherlands

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