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THE OCCURENCE OF NITROGEN-FIXING
CYANOBACTERIA, ALGAE AND BACTERIA IN DIFFERENT
TYPES OF SOIL
by
Mirjana Jarak, Oliver Fojkar, Timea Hajnal-Jafari, Simonida Đurić, Dragana
Stamenov, Josip Čolo
SUMMARY
The objectives of this study were to determine the frequency of nitrogen-fixing
cyanobacteria, algea and total number of bacteria in different types of soil of Vojvodina
province. The presence of these groups of microorganisms in the vertical profile of each
soil type was also determined. Microorganisms were studied in five soil types:
chernozem, fluvisol, arenosol, solonetz and humogley. The highest number of nitrogenfixing
cyanobacteria and bacteria was obtained in solonetz while the highest number of
algae was determined in fluvisol. The number of investigated groups of microorganisms
in the analyzed soils were found to be depended on soil type and soil profile depth. The
numbers of the microorganisms under study typically decreased with soil depth. The
obtained results show us that the strains of nitrogen-fixing cyanobacteria isolated from
local soil may be used through biotechnological application in the development of
microbiological inocula which are effective in temperate climatic conditions.
Key words: cyanobacteria, algea, bacteria, soil, number.
Primljeno: 30.09.2012.
Prihvaćeno: 10.10.2012.
Istraživanja iz ovog rada deo su projekta TR 31027.
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