In tropical countries, the dominant sapstain fungus (Lasiodiplodia theobromae Pat), restricts the use of rubberwood and reduces its economic value due to its bluish-black staining and cell wall degradation [2]. Protection of wood and wood products from fungal deterioration is achieved mainly through chemical wood preservatives. The health hazards and environmental pollution caused by use of wood preservatives necessitates alternative environment-friendly approaches to wood protection