BIOLOGICAL CONTROL METHOD AGAINST PATHOGENIC HETEROBASIDION ANNOSUM AND THE BALLET TRANSPLANT MANUFACTURED BY THE METHOD

摘要

A focused control method against the rot causing fungi Heterobasidion annosum and Heterobasidion parviporum. As pathogenic fungi these cause root rot and butt resin in living trees (e.g. spruce, pine, birch) and shrubs. The method used to control rot, is to grow in the seedling root ball, in the nursery, Phlebiopsis gigantea, which is an antagonistic fungus against Heterobasidion annosum and Heterobasidion parviporum. Phlebiopsis gigantea forms also a mycorrhiza system with the roots of seedlings, trees and shrubs. Phlebiopsis gigantea spreads from the ball of the seedling to the area surrounding the seedlings roots and to the dying roots of adjacent stumps, branches and residues in the soils humus layer. In the beginning Phlebiopsis gigantea obtains the nutrients it needs from the root ball of the seedling. It forms a concentrated hyphae growth around the seedling immediately, thereby protecting the roots of the seedling, as well as spreading to other substrate in the immediate vicinity. Phlebiopsis gigantea infects the roots of stumps and occupies this wooden material as a substrate for further growth. At the same time the antagonistic Phlebiopsis gigantea eliminates Heterobasidion annosum and Heterobasidion parviporum from this wooden material and prevents their spread. This biological focused control method using the method manufactured root ball will help prevent the expensive damage caused by root rot and butt resin in living trees and shrubs.