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Problematika imela (Viscum L.) z pohľadu záhradnej a krajinnej architektúry
Baltazár, Tivadar
Mistletoe infection was investigated in the castle park of Lednice on approximately 10 000 woody trees. There are 6034 potential host individuals of 62 taxa, from which already 1692 individual is infected (28%). The most common hosts (Acer campestre, A. platanoides, A. pseudoplatanus, Crataegus monogyna and species in his circle, C. pedicellata, Juglans nigra, Robinia pseudoacacia, Tilia cordata a T. platyphyllos) were studied for basic (analysis of variance, analysis of covariance, analysis of contingency table and regression analysis) and advanced (logistic regression, log-linear analysis and spatial analysis) statistical modelling with nine local factors (tree height, diameter at breast height, crown projection area, crown volume, tree age, development stage, physiological and biomechanical aspect of vitality and location of individuals). The examined local factors, from which the most important are the age and vitality of trees, have statistically significant effects to mistletoe distribution. The aim of our study was also testing the control methods against mistletoe using mechanical removal and herbicide treatment. Based on our studies it can be conclude that none of these control methods were effective enough. The partial regeneration of mistletoe shrubs was observed no later than the second year after the application. Besides, herbicide treatments have negative effects to the host.
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