Abstract

During 2000-2003 the health condition of Juglans regia L. in the urban environment of the 43 localities of Slovakia was evaluated in relation to the location of the trees and the assessment of occurrence, spread and harmfulness of parasitic fungi. We detected on stem the following pathogens: Melanconium juglandinum Kunze, Cytospora juglandina Sacc., Gibberella baccata (Wallr.) Sacc., Phoma juglandis (Preuss.) Sacc., Nectria cinnobarina (Tode ex Fr.) Fr. with conidial state Tubercularia vulgaris Tode. On branches: Melanconium juglandinum (Kunze), Cytospora juglandina Sacc., Gibberella baccata (Wallr.) Sacc., Phoma juglandis (Preuss.) Sacc., Nectria cinnobarina (Tode ex Fr.) Fr. with conidial state Tubercularia vulgaris Tode, Diplodina juglandina Hollós, Dothiorella gregaria Sacc. On leaves: Gnomonia leptostyla (Fr.) Ces. et de Not. and anamorph Marssonina juglandis (Lieb.) Magn., Ascochyta juglandis Boltsh., Microstroma juglandis (Bér.) Sacc., Mycosphaerella juglandis K. J. Kessler, anamorph Cylindrosporium juglandis F. A. Wolf, Cryptosporium nigrum Bon. and on fruits: Colletotrichum gloeosporioides (Penz.) Penz & Sacc. teleomorph Glomerella cingulata Stoneman (Spauld. & H. Schrenk) and Septoria epicarpii Thüm. The degree of leaf damage was determined by Marssonina juglandis to Juglans regia on selected localities.