Article: CANADIAN BLUESTAIN FUNGI: VARIATION IN TOLERANCE TO SAPSTAIN CONTROL BIOCIDES.

ABSTRACT

Devaluation of Canadian wood products by sapstain accounts for large and unpredictable losses each year. A large-scale survey of bluestain fungi in Canada found that the majority of aesthetic damage to softwood lumber was caused by three sapstain fungi: Ophiostoma piceae, O. pi1iferum, and O. floccosum. This paper reviews an evaluation of the tolerance of 30 of the isolated fungal strains (10 strains of each species) to a range of concentrations of active ingredients in different sapstain control products. The tolerance was correlated to the colony diameter after 12 days of fungal growth at 18[degrees]C on "pine-twig" agar amended with the chemicals at ...

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