© 1969 by Institute of Chartered Foresters
A Reappraisal of Canker and Dieback of European Larch
Department of Forestry, Oxford University, and Research Branch, Forestry Commission
Evidence from the assessment of two large European larch (Larix decidua Mill.) provenance experiments replicated on a number of sites in England, Wales, and Scotland, and from other observations, suggested that: (a) Larch canker was not caused by frost, but was probably due to primary infection by the fungus Trichoscyphella willkommii (Hart.) Nannf. (b) Scottish provenances of European larch were more susceptible to canker and dieback than were Carpathian provenances, (c) Canker and epidemic dieback of European larch were unrelated phenomena, although the relative susceptibility of the provenances examined was similar for both conditions.