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Biological nitrogen fixation activity under clover-grass mixtures
Jan Kryszak1, Aleksandra Sawicka, Alicja Niewiadomska
1Department of Grassland Production, August Cieszkowski Agricultural University of Poznań, Poland.
Acta Microbiologica Polonica
|October 5, 2002
Abstract:
Dinitrogen fixation activity was determined directly on experimental plots in mixtures of grass with red and white clover in the year of sowing as well as in the first year of full utilisation using the method of acetylene reduction (ARA). Furthermore, numbers of bacteria, actinomycetes, fungi and Azotobacter sp. were determined in soils under the experimental mixtures.