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National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
Monitoring rozšíření nekrózy jasanů (Hymenoscyphus fraxineus) v lesních porostech Moravy a východních Čech
 Prouza, Michal
Diploma thesis deals with ash dieback, caused by fungus pathogen Hymenoscyphus fraxineus. This is a summary of the available knowledge in literature concerning the problematic of the disease. Research activities were focused on monitoring of this patogen spread in the area of Moravia and eastern Bohemia, with emphasis on forest-typological diversity of habitats and the percentage of ash in the stands. 434 stands of ash were evaluated and the rate of health condition damage of trees with H. fraxineus presence depending on various factors was investigated. Dependence of damage of health status was not determinated as a function of LVS of Plíva (1987) (forest vegetation altitude stage), edaphic category or ecological range of Plíva (1987) as well as age stage of ash, stocking, other tree species composition, location and year of evaluation. Vice versa factors of damage on nature of ashes sites (SLT according Plíva 1987), mixing type and forest regeneration type were significant.
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Monitoring a ověření metodiky hodnocení nekrózy jasanů způsobené patogenem Chalara fraxinea na vybraných územích
 Prouza, Michal
Bachelor thesis deals with ash dieback, caused by fungus pathogen Hymenoscyphus fraxineus. This is a summary of the available knowledge in literature concerning the problematic of the disease. Research activities were focused on editing and verification of methodology to assess the extent of damage of ash trees health status. Creation of application part of the methodology, in terms of forest management measures, which should contribute to a more efficient cultivation of ash. Trees were the aim at this thesis too. 100 stands of ash and 17 alleys were evaluated and the rate of damage of health condition of trees with regard to ash dieback Chalara fraxinea depending on various factors was investigated. Dependence of damage of health status was determinated as a function of age class of stands, of LVS Plíva and on representation of ash trees in the stand. On the contrary correlation of damage of ash species was not significant.
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