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Testování účinnosti vybraných povolených přípravků proti patogenním houbovým organismům dřevin v podmínkách in vitro
Ellingerová, Eva
This diploma thesis deals with testing the effectiveness of six selected approved preparations against pathogenic fungal organisms of woody plants in in vitro conditions. Specifically, they are Propizol (propiconazole), Phosphojet (potassium dihydrogen phosphate), Horizon 250 EW (tebuconazole), Ortiva (azoxystrobin), Topas 100 EC (penconazole) and Previcur Energy (fosetyl, propamocarb). Solutions of different concentrations (from 0.0001 % to 100 %) were prepared from these fungicidal substances, which were subsequently tested against the pathogenic fungal organisms Cylindrocarpon cylindroides and Sphaeropsis sapinea. The selected pathogens mainly attack conifers. In the case of Cylindrocarpon cylindroides, it is the genus Abies, and in the case of Sphaeropsis sapinea, the genus Pinus. All operations were carried out in the phytopathological and mycological laboratory at the Institute of Forest Protection and Hunting. Here, the tested pathogens were regularly checked and measured. After 13 weeks, the effectiveness of individual fungicidal preparations at given concentrations on 2 selected fungal pathogens was evaluated. The results show effective fungicidal preparations as well as preparations that, on the contrary, support the growth of the pathogen. The most effective fungicidal substance in both cases of pathogens was Horizon 250 EW (tebuconazole), which stopped the mycelium growth of both pathogens already at a 1 % concentration of the active substance.
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Vyhodnocení účinku stromové injektáže u vybraných houbových patogenů u borovice černé (Pinus nigra J. F. Arnold)
Buben, František
This diploma thesis deals with fungal pathogen Sphaeropsis sapinea, which extends massively mainly to the Austrian pine (Pinus nigra). Dieback and die of Austrian pine are caused cooperation between stress and Diplodia blight. Thesis summarized the knowledge of the effects and influence of this pathogen on trees, monitors the possibilities of defence and protection, finding a fungicide in the laboratory, which would effectively reduce damage by injection into mature trees, subsequently. Nine commercially available fungicides were tested in laboratory conditions. Topas 100 EC (effective substance penconazole), Propizol 250 EC (effective substance propiconazole), Dithane DG Neotec (effective substance mancozeb) and Horizon 250 EW (effective substance tebuconazole) had impact for limitation of grow of mycelium S. sapinea. Horizon 250 EW (effective substance tebuconazole) has the highest effectivity in laboratory testing. However, the field testing did not prove its very good properties from laboratory testing.
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