Table 1 Site characteristics, trial design and sample size for the four trials used in this study (adapted from Gapare et al. 2006)
From: Influence of cambial age and climate on ring width and wood density in Pinus radiata families
Progeny trial | PT1 | PT2 | PT3 | PT4 |
|---|---|---|---|---|
Year planted | 1969 | 1971 | 1986 | 1986 |
Age harvested (years) | 31 | 27 | 16 | 16 |
Latitude | 38°12′S | 37°29′S | 38°14′S | 38°15′S |
Longitude | 146°40′E | 140°40′E | 146°41′E | 146°39′E |
Elevation (m) | 100 | 62 | 93 | 184 |
Annual rainfall (mm) | 760 | 900 | 760 | 785 |
Soil type | Sandy loam | Sandy clay loam | Sandy loam | Sandy loam |
Site type | Ex-pasture | 2nd PR | Ex-pasture | 2nd PR |
Family structure | Half-sib | Half-sib | Full-sib | Full-sib |
No. of families | 36 | 33 | 100 | 52 |
No. of trees/family | 18 | 27 | 6 | 6 |
No. of blocks | 9 | 6 | 3 | 6 |
Plot type | 2 × 3 | 10 tree rows | 4 tree rows | single tree |
Total trees | 648 | 780 | 600 | 312 |