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Rapid yellowing of needles of Picea abies
Author(s) -
Innes J. L.
Publication year - 1989
Publication title -
european journal of forest pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.535
H-Index - 49
eISSN - 1439-0329
pISSN - 0300-1237
DOI - 10.1111/j.1439-0329.1989.tb00766.x
Subject(s) - chlorosis , picea abies , horticulture , environmental science , botany , biology
Severe chlorosis developed in a 45 year old stand of Norway spruce over a period of three weeks in July and August 1986. The chlorosis was followed by needle necrosis and, eventually, shedding. The trees showing the most severe effects had all been damaged during timber extraction operations in 1985. The symptoms superficially resembled those on many trees in central Europe, Where air pollution is generally considered to be involved in chlorosis and defoliation. Air pollution is unlikely to be a primary factor in the chlorosis and defoliation observed in this stand.