Article Figures & Data
Figures
- Figure 1.
The fruit body of the decay fungus, Polyporus squamosus Indicates decay associated with the wound that was well painted with an asphalt dressing. The cracks on the wound surface allow easy access for microorganisms. The hard surface of the wound makes it appear that the wood beneath It Is sound, yet It Is not.
- Figure 2.
Decay and camblal wound dieback associated with drill wounds in a young sugar maple. The drill holes are used for tapping maples. When too many taps are put Into some trees, serious decay can result. Sometimes the tree can be killed when the cambium around the wound dies in large coalescing patches.
- Figure 3.
Column of discolored and decayed wood associated with one 5-year-old drill wound, plugged with a sterile dowel, In a sugar maple. Note the camblal dieback above and below the wound. Plugging drill holes In trees will not stop discoloration or possible decay.
- Figure 4.
The hole drilled Into a column of decay In a red maple started a new column of Infected wood. The cambium died above and below the hole.
- Figure 5.
The diameter of the hollow In the lower 8-foot section of the paper birch, and the diameter of the column of discolored and decayed wood In the upper 8-foot section, were the diameter of the tree when It received two large, severe basal wounds 50 years ago. When filling cavities In trees, great care should be taken to cause as little damage as possible to the hard rim of wood that separates the decay from the sound wood. Trees have effective systems for compartmentalizing Injured and infected tissues.
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