Laboratory evaluation of selected anti-fungal chemicals for control of fungal staining on Ginkgo sapwood

The susceptibility of Ginkgo sapwood to fungal attack and the ability of selected anti-stain chemicals to control colonization of sapstain and mold fungi on green Ginkgo sapwood were evaluated. Ginkgo sapwood was very susceptible to fungal staining, suggesting that prompt application of anti-stain chemicals after sawing will be essential for preventing fungal colonization. The ability of eight chemicals to prevent fungal discoloration of Ginkgo sapwood was evaluated using a small-scale laboratory procedure. NexGen provided excellent protection against stain and mold. NP-1 Plus, PQ-8, and Busan 1030 provided good short-term protection (4 wk.), but higher chemical loadings were required for long-term protection (6 wk.). Britewood Q, Britewood S, Britewood XL, and Nytek-GD provided little or no protection over the test period.

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