Modelling between tree and longitudinal variation in green density within Pinus radiata: implications for estimation of MOE by acoustic methods

New Zealand Journal of Forestry Science

Table 2 Treatment and site variation in stem dimensions and wood properties determined from 20 trees per treatment per site

Variable¹	Santa Lucia		Santa Isabel		Analysis of variance²
	Seedlings	Cuttings	Seedlings	Cuttings	Treatment (T)	Site (S)	T × S
Dimensions
DBH (cm)	26.4 (11.2)	30.2 (10.7)	26.8 (8.17)	26.9 (9.58)	3.73^ns	2.00^ns	3.40^ns
Height (m)	27.5 (7.93)b	30.3 (6.19)a	27.6 (3.93)b	26.5 (4.71)b	2.00^ns	9.41**	11.0**
Slenderness	106 (2.76)	102 (2.54)	104 (2.46)	100 (2.65)	2.46^ns	0.38^ns	0.00^ns
Wood properties
Green dens. (kg m⁻³)	919 (12.0)	910 (8.07)	923 (6.77)	902 (10.3)	2.50^ns	0.05^ns	0.39^ns
Velocity (km s⁻¹)	2.96 (0.0228)	2.89 (0.0267)	2.95 (0.0290)	2.95 (0.0242)	1.71^ns	1.08^ns	1.55^ns
MOE (GPa)	8.07 (0.180)b	7.62 (0.146)a	8.03 (0.138)ab	7.85 (0.136)ab	4.37*	0.39^ns	0.75^ns

Values shown include the tree-level mean followed by the standard error in brackets¹ For variables where there was a significant effect, means followed by different letters significantly vary at P = 0.05.
² F-values are shown followed by the P category, where asterisks **, *denote respective significance at P = 0.01 and 0.05; ^nsis not significant at P = 0.05.