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Picture library: 9205

HETEROBASIDION ANNOSUM . This disease transferred by root contact . New infection established in virgin forest in thinning stump 6 yreas 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 . Deep peat pH 7.0. Probably limed prior to afforestation . Location: Kielder Forest , Northumberland , England .

Reference: 9205

HETEROBASIDION ANNOSUM . This disease transferred by root contact . New infection established in virgin forest in thinning stump 6 yreas 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 . 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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