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Využití biopreparátů na bázi mikroorganismů k biologickému ošetření osiva vybraných kulturních plodin
 AUNG, Zin Moe Wai
The aim of the thesis was focused on the biological treatment of corn, soybean and cucumber seeds using the entomopathogenic fungus Beauveria bassiana, mycopara-sitic fungus Trichoderma virens and antagonistic bacteria Bacillus mycoides. A 0.5% solution of carboxymethylcellulose was used for seed coating, in which the concentration of spores in 1 ml was 1x106. After seed coating, the number of spores of filamentous per one seed was determined and also the influence of microorgan-isms on seed germination and seedling development was evaluated. The results show that the antagonistic bacterium B. mycoides and entomopathogenic fungi B. bassiana had a positive effect on the growth and development of seedlings of all tested crops. The mycoparasitic fungus T. virens slightly retarded the development of roots and shoots in corn and soybean during germination. On the other hand, cu-cumber seeds coated by T. virens showed a faster development on both parameters evaluated. By sowing coated seeds with useful microorganisms, which can be easily introduced into the soil in addition increasing soil suppressiveness. Thus, seedlings can be protected against soil-dwelling pests or plant pathogens.
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