Reduction of growth stresses in logs of Hieronyma alchorneoides Allemão from fast-growth plantations using steaming and heating: effects on the quality of lumber

Table 3 F-value of ANOVA for different parameters measured in logs, semi-logs and lumber of Hieronyma alchorneoides for different tree heights

Parameter		Height (m)
Parameter		0.0–2.5	2.5–5.0	5.0–7.5	7.5–10.0
LRGS_stand-tree		3.18^NS	–	–	–
LRGS_{before-treatment}		0.44^NS	2.42^NS	0.10^NS	1.27^NS
LRGS_{after-treatment}		4.44*	5.51*	5.47*	4.33*
Crooking_{due-to-sawing} in log side 1		33.31**	8.06**	1.95^NS	22.62**
Crooking_{due-to-sawing} in log side 2		8.50**	5.99**	4.33*	4.35*
Crooking_{due-to-sawing} in semi-log side 1		7.73**	14.06**	0.63^NS	57.46**
Crooking_{due-to-sawing} in semi-log side 2		31.21**	0.24^NS	6.16**	7.23**
Sapwood colour	L*	33.86**	20.16**	1.59^NS	6.77**
	a*	50.38**	39.96**	4.49*	1.83^NS
	b*	20.44**	4.87*	2.26^NS	0.28^NS
Heartwood colour	L*	38.78**	39.32**	11.33**	1.63^NS
	a*	16.83**	16.52**	1.37^NS	12.34**
	b*	29.90**	39.20**	16.43**	7.44*
Bow		2.04*	2.67*	1.88*	2.88*
Crook		1.12^NS	0.48^NS	12.00**	9.42**
Twist		0.62^NS	21.01*	0.31^NS	35.66**
Check		3.94*	3.79*	3.60*	3.37*
Split		3.88*	1.10^NS	2.46^NS	0.02^NS

** statistically significant at 99% (P < 0.01) and *statistically significant at 95% (P < 0.05)

ISSN: 1297-966X