Species | Average number per wound | Species | Average number per ripped branch | Diameter category | Average number per ripped branch |
---|---|---|---|---|---|
Sugar maple | 0.1 a | Sugar maple | 0.1 a | 15.2 to 45.7 cm (6–18 in) | 1.6 a |
Silver maple | 1.0 b | Silver maple | 1.6 b | 45.7 to 76.2 cm (18–30 in) | 0.8 b |
Norway maple | 0.5 ab | Norway maple | 1.1 b | 76.2+ cm (30+ in) | 0.9 ab |
Means followed by a different letter are significantly different at P = 0.05.