engleski

Silvicultural properties of several species of the genus Sorbus L. in the Republic of Croatia

There are 13 species and subspecies of the genus Sorbus L. growing wild in the Republic of Croatia. Due to their fleshy fruit, species of the genus Sorbus L. belong to forest fruits, similar to other secondary tree species that contribute to the biological diversity of stands, serve as a suppport for the principal tree species and improve soil quality. During the autumn of 2003, trees of four species of the genus Sorbus L. (S. aria, S. aucuparia, S. domestica and S. torminalis) were recorded in different localities in the Republic of Croatia. Dendrometric data, tree coordinates, altitude and exposure were measured. The social position of each tree was assessed and the degree of yield was determined over a period of 6 years (2003 - 2008). Of the total of 77 registered trees, there were 13 whitebeams, 14 rowan trees, 13 service trees and 37 wild service trees. A good seed crop of whitebeam, service tree and wild service tree in the Republic of Croatia occurs at intervals of every four years, while that of rowan takes place at intervals of every three years. The properties of these species include sensitivity to competition and the non-existence of pure stands.

whitebeam; rowan; service tree; wild service tree; seed crop

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