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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
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%).
de Freitas, J.R. (2000) Yield and N assimilation of winter wheat ( L., var. Norstar) inoculated with rhizobacteria. Pedobiologia, 44(2): 97
Jarak, M.N., Đurić, S. (2004) Praktikum iz mikrobiologije. Novi Sad: Poljoprivredni fakultet
Kauser, M.A., Hafees, F.Y., Mirza, M.S., Hameed, S., Rasul, G., Bilal, R. (2005) Rhizospheric plant-microbe interactions for sustainable agriculture: Biological nitrogen fixation. in: Wang Y.P., i dr. [ed.] Sustainable Agriculture and the Environment, Netherlands: Springer, str. 257-260
Kennedy, I.R., Choudhury, A.T.M.A., Kecskes, M.L., Roughly, R.J., Nguyen, T.H. (2005) Non-symbiotic bacterial diazotrophs in crop-farming systems: Can their potential for plant growth promotion be better exploited?. in: Proceedings of the 14th International Nitrogen Fixation Congress, str. 271-272
Mrkovački, N.B., Milić, V.M. (2001) Use of Azotobacter chroococcum as potentially useful in agricultural application. Annals of Microbiology, vol. 51, br. 2, str. 145-158
Mrkovački, N.B., Čačić, N.A., Kovačev, L.M., Mezei, S.M. (2002) Response of sugar beet to inoculation with Azotobacter in field trials. Agrochimica, vol. 46, br. 1-2, str. 18-26
Mrkovački, N.B., Mezei, S.M. (2003) Primena sojeva Azotobacter chroococcum - NS Betafixina u gajenju šećerne repe. Zbornik radova Instituta za ratarstvo i povrtarstvo, br. 39, str. 49-58
Mrkovački, N.B., Mezei, S., Kovačev, L., Čačić, N., Nagl, N. (2005) Effect of inoculation on azotobacter population size in sugarbeet rhizosphere depending on fertilization. Savremena poljoprivreda, vol. 54, br. 3-4, str. 391-394
Mrkovački, N.B., Mezei, S.M. (2006) Kvantitativna karakteristika rizosferne mikroflore šećerne repe u zavisnosti od đubrenja. Acta biologica Iugoslavica - serija A: Zemljište i biljka, vol. 55, br. 1, str. 67-72
Royas, A., Holgwin, G., Glick, B.R., Bashan, Z. (2001) Synergism between Phyllobacterium sp. (N2-fixer) and Bacillus licheniformis (P-solubilizer), both from a semiarid mangrove rhizosphere. FEMS Microbiology Ecology, 35(2): 181
Vessey, K.J. (2003) Plant growth promoting rhizobacteria as biofertilizers. Plant and Soil, 255(2), 571-586


article language: Serbian
document type: Original Scientific Paper
published in SCIndeks: 02/06/2007

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