Table 1 Site and silvicultural details for the unpruned treatments at Kaingaroa Forest and Ribbonwood Station

Latitude

38.5 °S

44.4 °S

Longitude

176.6 °E

169.8 °E

Elevation (m)

450

650

Aspect

NW

Between NE and SE

Slope

3°

5° to 17° average 10°

Mean daily temperature (°C)

11.2

6.8

Annual rainfall (mm)

1255

824

Daily mean windspeed (m s⁻¹)

2.2

4.3

Year trial planted

1982

1983

Seedlot

NN 79/6

CY/C/79/11

Stand age (years) when the only thinning occurred

10.9

10.1

Size of PSPs

0.2142 ha in total with measurements confined to inner 0.08 ha

0.147 ha in total with measurements confined to inner 0.08 ha

Number of PSPs from which sample trees were selected

6

15

Site index (mean top height at age 40 years) (m) for selected PSPs

39.0

30.8

Range: 38.1 – 40.7

Range: 30.0 – 40.7