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2006, vol. 30, iss. 1, pp. 48-52
Effect of inoculation on microorganisms population size in sugar beet rhizosphere
Institute of Field and Vegetable Crops, Novi Sad
Abstract
Rhizosphere appears as the most important niche for microbial activity. It is of direct relevance to nutrient cycling affecting plant nutrition. Rhizosphere can be defined as the root surface and the soil adhering the root. The aim of this research was to determine the effect of inoculation with Azotobacter chroococcum on number of microorganisms in rhizosphere of sugar beet in dependence of fertilization. A field trial was conducted at Rimski Šančevi experiment field in 2005. on a chernozem soil, with the sugarbeet hybrid variety Sara developed at Institute of Field and Vegetable Crops in Novi Sad. Inoculation of sugarbeet seeds was performed with a culture of Azotobacter chroococcum strains in the concentration of 109/ml (NS-Betafixin), which was incorporated into soil immediately before planting. Differences were registered in population size which depended on both nitrogen dose and fertilization method. On average, the highest percentage of increase was in total number of microorganisms (45.7%) than in Azotobacter population size (17%).
References
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article language: Serbian
document type: Original Scientific Paper
published in SCIndeks: 02/06/2007

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