Guliko Dvali

The research aim was to study the influence of the biopreparate "Phytocatena" on the Fungus Fusarium of the tomato root and rhizosphere. The study of the biopreparation influence on pathogens, which causes the disease of soil micro-flora and plant, is one of the main issues for environmental recovery and ecologically clean product. The study has shown that the biopreparate Phytocatena's activity has significantly decreased the total quantity of pathogenic fungi and Fusarium development within the plant root, as well as within the rhizosphere. This has resulted in a tomato that has a strong root system, well developed stems and a healthy plant product.

The research aim was to study the influence of the biological preparate "Biocatena" and fungicide "Ridomil Gold" on pathogens which cause fungal diseases of tomato variety "Slivka" root and rhizosphere. The Fungicide "Ridomil Gold" strongly suppresses development of both beneficial and pathogenic microorganisms of the plant root and rhizosphere, while the biological product "Biocatena" does not cause strong suppression of beneficial microorganisms that contributes to the preservation of the healthy soil environment and active plant development during the blooming period.

Our research goal was to isolate microorganisms in the tomato rhizosphere, to study their antagonistic interaction to choose strong antagonists to be applied against pathogenic microorganisms in the tomato culture.We studied the tomato rhizosphere microbial flora according to the plant vegetation phases. 120 cultures were isolated, the antagonistic action of these cultures was tested by the diffusion and streak inoculation methods. The result showed that the strong antagonist strains are: N6, N20, that have inhibited the growth of microbes, by accordingly. For the identification we had studied morphological, physiological, and cultural features of antagonist strains. Bacillus subtilis. St. N6. In conclusion, we isolated a strong antagonist Bacillus subtilis St. N6, which had inhibited the growth of microorganisms by 25-30% extracted from tomato rhizosphere.

In Georgian conditions, investigation of the microbe-antagonists and the antibiotics synthesized by the latter was carried out in the strains isolated from the rhizospheres of the vegetable cultures (tomatoes, cucumbers, eggplants, sweet pepper). Against Fusarium, various cultures of the spore bacteria have been isolated, including Bac. Mesentericus and the bacteria of the Pseudomonas family. The majority of those bacteria, which synthesized the antibiotics, belonged to actynomyces. Also a large portion of the antagonists contained fungi.

Doctoral Thesis Referee

Master Theses Supervisor

Doctoral Thesis Supervisor/Co-supervisor

Scientific editor of monographs in foreign languages

Scientific editor of a monograph in Georgian

Editor-in-Chief of a peer-reviewed or professional journal / proceedings

Review of a scientific professional journal / proceedings

Member of the editorial board of a peer-reviewed scientific or professional journal / proceedings

Participation in a project / grant funded by an international organization

Participation in a project / grant funded from the state budget

Patent authorship

Membership of the Georgian National Academy of Science or Georgian Academy of Agricultural Sciences

Membership of an international professional organization

Membership of the Conference Organizing / Program Committee

National Award / Sectoral Award, Order, Medal, etc.

Honorary title

Monograph

Handbook

Research articles in high impact factor and local Scientific Journals

Publication in Scientific Conference Proceedings Indexed in Web of Science and Scopus