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Picture library: 9203

HETEROBASIDION ANNOSUM . Fomes annosus disease transference by root contact . New infection established in virgin forest in thinning stump 6 years old ( right ) outer edge of fungus has killed roots of healthy dominant tree adjacent ( left ) and has passed into butt and stem as brown stain , extending for 7 feet . Deep peat pH 7.0 . Probably limed prior to afforestation . Location: Kielder Forest , Northumberland , England .

Reference: 9203

HETEROBASIDION ANNOSUM . Fomes annosus disease transference by root contact . New infection established in virgin forest in thinning stump 6 years old ( right ) outer edge of fungus has killed roots of healthy dominant tree adjacent ( left ) and has passed into butt and stem as brown stain , extending for 7 feet . Deep peat pH 7.0 . Probably limed prior to afforestation . Location: Kielder Forest , Northumberland , England .


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Credit line: Forestry Commission

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