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1

Plant growth promotion rhizobacteria in onion production

100%
Colo J., Hajnal-Jafari T. I., Duric S., Stamenov D., Hamidovic S.
Polish Journal of Microbiology
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2014
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tom 63
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nr 1
The aim of the research was to examine the effect of rhizospheric bacteria Azotobacter chroococcum, Pseudomonas fluorescens (strains 1 and 2) and Bacillus subtilis on the growth and yield of onion and on the microorganisms in the rhizosphere of onion. The ability of microorganisms to produce indole-acetic acid (IAA), siderophores and to solubilize tricalcium phosphate (TCP) was also assessed. The experiment was conducted in field conditions, in chernozem type of soil. Bacillus subtilis was the best producer of IAA, whereas Pseudomonas fluorescens strains were better at producing siderophores and solubilizing phosphates. The longest seedling was observed with the application of Azotobacter chroococcum. The height of the plants sixty days after sowing was greater in all the inoculated variants than in the control. The highest onion yield was observed in Bacillus subtilis and Azotobacter chroococcum variants. The total number of bacteria and the number of Azotobacter chroococcum were larger in all the inoculated variants then in the control. The number of fungi decreased in most of the inoculated variants, whereas the number of actinomycetes decreased or remained the same.
2

Deposition of metals in glacial lake sediment

86%
Jurkovic J., Velagic Habul E., Dorfler W., Omanovin-Miklicanin E., Hamidovic S., Ivankovic A.
Polish Journal of Soil Science
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2018
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tom 51
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nr 2
The aim of this research was to find the relationship between metals content and age of the sediment and to estimate the contamination level. For the research of sediment, samples were taken from the glacial Lake Prokosko. Concentrations of eight elements (Ca, Mg, Fe, Cd, Pb, Zn, Cu and Mn) were determined. The age was determined with usage of C¹⁴. For statistical evaluation of the results, we used basic statistical tools, correlation, and PCA. The results showed that all of investigated metals have natural origin. Sediment core from this research was around 18,000 years old and the results revealed characteristics of metals deposition in the process of sedimentation. Concentrations of metals were compared with age (depth) of sediment. Maximal concentrations for iron, calcium, magnesium and manganese are found in the period of Allerӧd oscilation. Differences in Mn/Fe ratio and organic matter content are showing changes through history. These results show metal deposition characteristics in different climate periods, and these characteristics could be used as another proof of climate change.
3

Remediation of acid mine drainage based on a novel coupled membrane-free microbial fuel cell with permeable reactive barrier system

86%
Hamidovic S., Teodorovic S., Lalevic B., Jovicic-Petrovic J., Jovic J., Kikovic D., Raicevic V.
Polish Journal of Environmental Studies
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2016
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tom 25
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nr 1
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