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PESTS AND DISEASES OF FORESTRY IN NEW ZEALAND

Symptoms observed in April, tree age over fifteen years

Close up view of black banding, within a larger yellowish or khaki/olive coloured band, typical of the onset of RNC

Red needle cast occurs from April to October on trees of all ages, but generally those over 3 years old.

Needles

Oily green band, then yellow, then red. Needles detach readily. Resin blobs are sometimes seen at the needle base.

Incidence and severity

Localised/general distribution, almost every tree in affected parts of a stand.

 

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