Needles around the terminal bud of a shoot reddish-brown, needle basis remaining green for a while; resin-droplets on the terminal bud and below on the shoot; terminal bud dead; later on dieback of the parts below, needles turn brown. Black fruiting bodies of the asexual stage Brunchorstia pinea in the bark, later on also disc-shaped sexual fruiting bodies.
Affected tree species
Needle; Stem; Shoot/Twig/Branch;
Worldwide known and common bark destroying pathogen, in Europe a problem in large subalpine afforestations of pines (mainly Pinus cembra), in low altitudes following winters with long lasting continuous snow cover on various species of pines as well as on spruces. Young trees may die, older trees mostly loose twigs and branches (also loss of increment).
Curative measures Curative measures impossible (Extensive tests with fungicides were never successful!). Preventive measures to avoid outbreaks of Scleroderris-disease in spruce-stands: no afforestation of spruce under cover of pines – pines are a permanent source for infections. To avoid the problems in subalpine afforestations of Pinus cembra: careful mapping of the pattern of snow cover preceding afforestation, mind suitable provenances of the plant stock!
Scleroderris-disease: crown- dieback of Blue spruce Picea pungens
Scleroderris-disease: fruiting bodies with emerging spore masses
Scleroderris-disease: fruiting bodies emerge from a needle basis
Scleroderris-disease: dieback of Pinus sylvestris (foto LFD Tyrole 2002)
Scleroderris-disease: dieback of Scots pines (foto LFD Tyrole 2002)
Scleroderris-impact following hail damage: fruiting bodies of the asexual stage Brunchorstia pinea in the hail wounds