Three concentrations of CCB were evaluated for their efficacy to protect Caribbean pine against fungal attack. Standardized laboratory tests (EN 113) were used to assess CCB effectiveness against a white-rot fungus (Trametes versicolor), and a brown-rot fungus Gloeophyllum trabeum. After 12 weeks, treated cubes of Caribbean pine exposed to the brown-rot fungus had between 2-8% weight losses while the untreated cubes lost more than 24%. The white-rot fungus caused 2-8% weight loss in treated samples and more than 16% in untreated samples. Additionally, another standardized laboratory test (EN 807) was used to asses CCB effectiveness against soft-rot decay. Using two different soil types, weight losses were comparable with the losses from the white-rot fungus. CCB reduced the three types of attack tested with a clear dose-response.

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