Introduction of species of the Juglans genus in the West of Ukraine

Abstract

This article is dealing with occurrence of species of the genus Juglans L. in 36 woodland subjects in the Western Ukraine: old parks, arboretums, forests and artificial plantations. We evaluate the tree age, growth (height, d 1,3 diameter), abundance (tree number), fecundity and germination capacity. The most frequently cultivated species is Juglans nigra L. (21 subjects), the most rare are Juglans cordiformis Maxim, and Juglans manshurica Maxim. (in 3 subjects each). The cultivated Juglans trees are the most abundant in the Precarpathian region Opollya (24 subjects).