Fungal defacement of water-stored softwoods

IRG/WP 93-10009

M A Powell, R A Eaton

Sapstain, mould and basidiomycete defacement of untreated sawn boards of Scots and Corsican pine was recorded during a 14 week field trial. Boards were cut from freshly felled logs and from logs previously maintained under water sprinklers for 6 months and ca. 4 years. The incidence of sapstain defacement or the freshly felled wood was very servere aftcr 2 weeks and remained so throughout the board trial. Fungal defacement of wood previously stored under sprinklers for 6 months was progressive and was severe by 14 weeks. In contrast, the level of defacement of boards from long lerm water-stored logs remained very low after 14 weeks exposure. The marked differences in susceptibility to fungal infestation of boards from freshly felled and water-stored logs are discussed in terms of wood sugar levels and the bacterial populations present in the wood.


Keywords: SOFTWOODS; SAPSTAIN; WATER STORAGE; CARBOHYDRATES; BACTERIA

Conference: 93-05-16/21 Orlando, Florida, USA


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