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The decay resistance of six Eucalyptus species in stake and stakelet trials - 2024 Eucalyptus stake assessment results
By Diahanna O’Callahan, Jackie van der Waals, Carolina Gous, December 2024.
Specialty Timbers NZ report n/a
2024 Eucalyptus stake assessment results have been made available to industry by Scion but funding was not available for Scion to produce a report.
| Group no. | Tree | Species | Index of Condition 1 |
|---|---|---|---|
| 8 years, 1 month exposure | |||
| 1 | 1 | E. bosistoana | 6.3 |
| 2 | 2 | E. bosistoana | 7.0 |
| 3 | 3 | E. bosistoana | 6.0 (1) 2 |
| 4 | 4 | E. bosistoana | 4.3 (2) |
| 5 | 5 | E. quadrangulata | 7.0 (1) |
| 6 | 6 | E. quadrangulata | 3.8 (3) |
| 7 | 7 | E. quadrangulata | 5.5 (1) |
| 8 | 8 | E. quadrangulata | 4.9 (1) |
| 9 | 9 | E. pilularis | 6.1 |
| 10 | 10 | E. pilularis | 4.1 (3) |
| 11 | 11 | E. pilularis | 6.1 |
| 12 | 12 | E. pilularis | 5.7 (1) |
| 13 | 13 | E. sphaerocarpa | 6.2 |
| 14 | 14 | E. sphaerocarpa | 6.2 |
| 15 | 15 | E. sphaerocarpa | 6.1 |
| 16 | 16 | E. sphaerocarpa | 4.8 (2) |
| 17 | 17 | E. globoidea | 5.5 (1) |
| 18 | 18 | E. globoidea | 3.8 (3) |
| 19 | 19 | E. globoidea | 5.5 (2) |
| 20 | 20 | E. globoidea | 4.6 (4) |
| 21 | 21 | E. muelleriana | 3.1 (6) |
| 22 | 22 | E. muelleriana | 4.6 (3) |
| 23 | 23 | E. muelleriana | 4.4 (3) |
| 24 | 24 | E. muelleriana | 4.5 (3) |
| 25 | - | P. radiata sapwood | Av. life 2.1 years |
| 26 | - | F. sylvatica heartwood | Av. life 2.1 years |
| 27 | - | P. radiata H3.2 | 8.9 |
| 28 | - | P. radiata H4 | 6.7 (1) |
1 Index of Condition is the average decay rating for all of the samples in a group.
2 Figures in brackets are number of stakes that have failed.
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