Effect of inoculation on azotobacter population size in sugarbeet rhizosphere depending on fertilization

Abstract

The objective of this study was to assess the effect of inoculation on Azotobacter population size in dependence of fertilizer dose and fertilization method. Differences were registered in Azotobacter population size which depended on both, nitrogen dose and fertilization method. On average, the highest percentage of increase in Azotobacter population size in relation to the non-inoculated variant, was registered in the variant with nitrogen, liquid manure and harvest residues. The largest increase in Azotobacter population size was obtained in the inoculation variants.