Dragana Stamenov

University of Novi Sad · Faculty of Agriculture

Bio-based solutions that promote plant growth, yields and functional quality of foods in primary production are gaining popularity in environmentally challenging conditions such as temperature fluctuations, late frosts and excess precipitation. This study was implemented to examine the foliar effect of microalgae biostimulants (three microalgae: Ch...

Soil algae are photosynthetic microorganisms showing huge differences in morphology depending on the soil type, agricultural practices, and environmental factors. The aim of this research was to compare the results of classical and molecular protocols for microalgal identification. The green microalgae were isolated from acidic arable soil of dystr...

Co-cultivation of plants and microalgae represents an optimized production method which is less resource intense and it is ecologically correct and clean. Hydroponically grown plants may have higher yields and better quality. The possibility of Swiss chard and Chlorella vulgaris co-cultivation and their joint impact on microalgae growth parameters...

The objective of the present paper was to isolate microorganisms (Pseudomonas sp., Bacillus sp. and Azotobacter sp.) from the rhizospheric soil of rosemary (Rosmarinus officinalis L.) and investigate their biostimulatory (plant growth-promoting – PGP) and biocontrol potential. The bacteria isolated from the rhizosphere of rosemary included 15 bacte...

Biofertilizers and biostimulators have become alternative sources of plant nutrients. Biofertilizers derived from microalgae represent a new approach in plant production. The aim of the study was to examine the capacity of the microalgal cell suspension to improve germination and initial growth (root and shoot length) of white Icicle Radish (Raphan...

Background: Various microorganisms that can have a positive or negative effect on plant development are present in the rhizospheric soil of alfalfa. The research aimed to investigate the impact of two nitrogen-fixing bacteria and two species of the phytopathogen fungus Colletotrichum on the abundance of aminoheterotrophs, nitrifying and denitrifyin...

Microalgae application in agriculture is an alternative measure that could be highly beneficial to plants. The application of microalgae Chlorella vulgaris S45 and its effect on plant growth and pigment content in Swiss chard were investigated. In the treatments, 5% and 10% algal suspensions were applied by spraying on plants and in soil, respectiv...

The objective of this work was to do a comparative study of Pseudomonas and Bacillus isolates for their plant growth-promoting (PGP) potential, monitoring the impact of selected isolates on the yield of English ryegrass (Lolium perenne). Isolation, physiological and biochemical characterization, in vitro assay of enzymatic and plant-growth promotin...

Healthy diet supply needs to enable adsorption of nutrients, vitamins, and fibers which contribute to overall human health. However, it is debatable how beneficial the consumption of microbiologically contaminated drinking water or plant products is. In order to prevent food contamination it is necessary to determine the potential sources of contam...

A large amount of agricultural organic matter (AOM) comes into soil every day, through organic remains, and it is decomposed by bacteria, fungi and actinomycetes (Ugarković et al, 2011). The aim of this research was to select isolates of bacteria with the most organic matter degrading potential, by isolating the bacteria from five different types o...

The influence of different lead acetate concentrations (10 -5 M, 10 -4 M, 10 -3 M, 10 -2 M and 2 x 10 -2 M) both with and without presence of actinomycetes on germination and initial growth (root, leaf length and stem height) of vetch plant (Vicia sativa L.) was rated. Different lead acetate concentrations and actinomycetes (Streptomyces sp.) of 5,...

The purpose of this study is to investigate the microbial activity and the number of different groups of microorganisms in the soil under organic agricultural systems. A range of analyses was conducted on soil samples taken from calcareous chernozem soils managed under organic (7 sites) and conventional agricultural systems (1 site). Laboratory mea...

The aim of this study was the isolation of Pseudomonas sp. and Bacillus sp. strains from rhizospheric soil and monitoring the impact of two isolates denoted as P12 (Pseudomonas sp.) and B1 (Bacillus sp.) on the parameters of the English ryegrass (Lolium perenne) yield and activity of the soil microbial communities. During 2012-2014, the plot experi...

The aim of this study was the isolation of Pseudomonas sp. and Bacillus sp. strains from rhizospheric soil and monitoring the impact of two isolates denoted as P12 (Pseudomonas sp.) and B1 (Bacillus sp.) on the parameters of English ryegrass (Lolium perenne) yield and activity of the soil microbial communities. During 2012–2014, a plot experiment w...

Gastro-intestinal nematodes (GIN) of sheep are one of major constraints in grazing production systems worldwide. Control is commonly achieved using anthelmintics, but global occurrence of anthelmintic resistance to different drugs and the emergence of multi-resistant GIN species seriously limit the efficiency of their use. Therefore, integrated par...

The aim of this research was to investigate the microbial activity in forest soil from different sites under deciduous and coniferous trees in Serbia. One site on Stara planina was under beech trees (Fagus sp.) while another under mixture of spruce (Picea sp.) and Douglas fir (Pseudotsuga sp.). The site on Kopaonik was under mixture of beech (Fagus...

The aim of this study was the isolation and characterization of actinomycetes (Streptomyces sp.) with PGP traits in the rhizosphere of perennial ryegrass, and monitoring the impact of their use on the parameters of the English ryegrass (Lolium perenne) yield and microbiological activity in its rhizosphere. The isolates had different growth characte...

The aim of this study was to compare the effect of organic and conventional production on yield parameters of bean (Phaseolus vulgaris) as well as on the number of rhizospheric microorganisms. Studies were conducted at two sites on chernosem soil. Organic production was conducted on the field in the village Pivnice, while conventional production wa...

The aim of this research was to evaluate the effect of green algae Chlorella vulgaris on the initial growth of wheat, maize, bean and lettuce and the microbiological activity of rhizospheric soil. The experiment was conducted in controlled conditions. The inocula were applied as foliar fertilizer by spraying. Plant material was taken 30 days after...

Solonetz are dark alkaline soils which are mainly bare or coverd by grasses. These sodic soils are characterized by pore water regime, high sodium saturation that is harmful to plants, unfavorable chemical and physical condition which makes them unsuitable for agricultural uses. Productive capacity of solonetz soils are usually improved by differen...

Because of their huge biodiversity and metabolic capabilities, the application of microorganisms as bioremediation agents is a way to enhance pollutant degradation. The aim of this research was to investigate the potential of five strains of Pseudomonas sp. as possible bioremediation agents. Strains are from the Collection of the Microbiology Depar...

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...

Growth and development of forest plants depend mostly on the soil microbial activity since no mineral or organic fertilizers are applied. Microbial processes can be activated and conditions for plants development improved with the introduction of selected microorganisms in the soil. With the aim of obtaining quality planting material in a shorter p...

The effect of inoculation with Pseudomonas fluorescens and Bacillus subtilis on the yield of fresh and dry mass of English ryegrass (Lolium perenne L.) as well as on the number of rhizospheric microorganisms was studied. The microorganisms were introduced into the soil before sowing. The control plots were not inoculated. The number of microorganis...

The aim of the study was to investigate ability of Pseudomonas sp. Q4b, Bacillus sp. Q5a and Azotobacter chroococcum strain 8 to enrich a population of plant growth promoting rhizobacteria (PGPR) in rhizosphere and thus enhance maize growth (Zea mays L.). Experiments were carried out under greenhouse and field conditions, on a chernozem soil. In vi...

The dynamics of phosphorus and sulphur in soil is closely related to the dynamics of the biological cycle in which microorganisms play a central role. There is not much microbiological activity in acid soils because aerobes are scarce, rhizosphere is restricted to the shallow surface layer, and the biomass of microorganisms decreases with higher ac...

The effect of co-inoculation on the microbiological properties of rhizospheric soil and yield of maize was investigated in field conditions. The total number of microorganisms (TNM) was largest in variant where Plant Growth Promoting Bacteria (PGPB), Phosphorus Solubilizing Bacteria (PSB) and Arbuscular Mycorrhiza (AM) were applied. TNM was 418.10x...

The aim of the investigation was to determine the fertility of acidic soil (pH 5.4) according to the number of microorganisms and their enzymatic activity, as well as to enhance productive properties of this soil using microbial inoculants and calcium carbonate. One half of soil samples were untreated and the investigation focused on examining the...

REZIME Ispitivan je uticaj stajnjaka, mineralnih i mikrobioloških ÿubriva na mikrobiološku aktivnost I prinos soje u sabijenom i nesabijenom zemljištu. Odreÿen je ukupan broj bakterija, broj gljiva, broj aktinomiceta, i broj azotobaktera. Uzorci su uzimani u fazi pet listova i na kraju vegetacije soje. U proseku broj ispitivanih grupa mikroorganiza...

Microorganisms are still not widely used in forage grass production although higher and better quality yield is one of the goals of animal husbandry. The aim of this research was to investigate the effect of plant growth promoting microorganisms (Azotobacter chroococcum and Streptomyces sp.) on the growth of English ryegrass and microbiological act...