Table 5 Result of variance analysis of thinning and pruning treatments effect on mechanical properties of clonal teak wood

Source of variance	df	MOE		MOR
Source of variance	df	F-value	Var (%)	F-value	Var (%)
Block	2	1.48^ns	0.1	2.40^ns	0.3
Thinning	2	1.41^ns	3.0	0.94^ns	0.0
RL (Thinning)	7	13.08^**	89.0	11.46^**	90.2
Pruning	2	0.90^ns	0.0	0.53^ns	0.0
RL (Pruning)	6	0.13^ns	0.0	0.36^ns	0.0
Thinning × Pruning	4	0.44^ns	0.0	0.86^ns	0.0
RL (Thinning Pruning)	7	1.08^ns	0.5	1.09^ns	0.8
		CSPL		CSPD
Block	2	7.64^**	5.2	2.77^ns	2.3
Thinning	2	0.21^ns	0.0	0.41^ns	0.0
RL (Thinning)	7	3.11^**	38.0	2.07^ns	30.3
Pruning	2	2.07^ns	19.3	2.03^ns	29.0
RL (Pruning)	6	1.95^ns	17.2	1.20^ns	5.7
Thinning × Pruning	4	1.08^ns	1.4	1.16^ns	4.4
RL (Thinning Pruning)	7	1.06^ns	1.0	0.75^ns	0.0

Significant at α = 0.01;
Non-significant difference at α = 0.05.
df: degree of freedom, MOE: modulus of elasticity, MOR: modulus of rupture, Var: variance components, RL: radial level, CSPL: compressive strength parallel to the grain, CSPD: compressive strength perpendicular to the grain.