Spreading device, method and powder-like mixture composition for controlling or preventing forest pathogens on tree stumps
A spreading device, a powder-like mixture composition and a method tor spreading the composition for control or prevent forest pathogens on tree stumps are disclosed.
1 . A composition in the form of a powder mixture, which comprises microbial propagules and a solid carrier, wherein the volumetric weight of the solid carrier is at least 0.50 g/cm 3 , wherein said microbial propagules are fungal spores of Phlebiopsis gigantea and their culture medium, characterized in that it contains 5-30 w-% of a mixture of Phlebiopsis gigantea fungal spores and their culture medium, 60-90 w-% solid carrier and 1-10 w-% colouring substance and nutritional supplements and wherein said composition is spread as a powder form.
2 . The composition according to claim 1 , further comprising 0.5 to 5 w-% of a marker dye or 0.5 to 20 w-% of a nutritional supplement, or a mixture thereof.
3 . The composition of claim 1 , wherein the culture medium comprises amorphous silica.
4 . The composition according to claim 1 , wherein said fungal spores are spores of Phlebiopsis gigantea strain ATCC 90304 , Phlebiopsis gigantea strain DSMZ 26191 , Phlebiopsis gigantea strain DSMZ 26192 , Phlebiopsis gigantea strain DSMZ 16201, or a combination thereof.
5 . The composition according to claim 1 , wherein said solid carrier is lime, calcium carbonate, kaoline, bentonite, talc, gypsum, chitosan, vermiculite, perlite, amorphous silica, granular clay, fine-grained cellulose powder, polysaccharides, chitin, chitosan, polyacrylamide, lignin derivatives, cereal flours, yeast extract, betaine or fine-grained composition made of cereal grains, bran, sawdust, peat or wood chips or a mixture thereof.
6 . The composition according to claim 1 , wherein the volumetric weight of the solid carrier is at least 0.6 g/ml.
7 . The composition according to claim 1 , wherein the volumetric weight of the solid carrier is at least 1.0 g/ml.
8 . A method to control or prevent or control growth of Heterobasidon fungal pathogen on a tree stump, the method comprising the steps of: a) providing a composition according to claim 1 ; and b) spreading or dispersing of the composition in a powder mixture on said tree stump by machine or manually, wherein the spreading in step b) is at least 1 mg/cm 2 of the powder mixture is spread onto the tree stumps of a logging area.
9 . The method of claim 8 , wherein the composition in step a) comprises 5 to 30 w-% of fungal spores and 60 to 90 w-% of a solid carrier.
10 . The method of claim 8 , wherein said composition comprises 10 to 30 w-% of fungal spores and 60 to 90 w-% of a solid carrier.
11 . The method of claim 10 , wherein said composition comprises 0.5 to 5 w-% of a marker dye or 0.5 to 20 w-% of a nutritional supplement, or a mixture thereof.
12 . The method of claim 8 , wherein said composition comprises 10 to 30 w-% of fungal spores, 60 to 90 w-% of a solid carrier, and 0.5 to 5 w-% of a marker dye or 0.5 to 20 w-% of a nutritional supplement comprising lignin or lignin derivatives, or a mixture thereof.