Table 3.

Results of Analysis of Variance (ANOVA) using mixed models to examine differences in pine weevil damage (PWD; in classes 0–5, or as a continuous variable based on mid-class values, Table 2) between Norway spruce emblings and two types of seedlings in Trial A.

	PWD classes (0–5)			PWD mid-class value			Plant height (cm)
Source of variation	df	F	p	df	F	p	df	F	p
Fixed effects
Block	4,607	74.1	<0.0001	4,607	75.9	<0.0001	4,607	27.4	<0.0001
Plant type	2,607	41.2	<0.0001	2,607	44.3	<0.0001	2,607	71.1	<0.0001
Random effects	Var. expl.	Z-value	p	Var. expl.	Z-value	p	Var. expl.	Z-value	p
Family	6.1%	2.4	0.009	7.3%	2.6	0.005	3.6%	1.4	0.076
Clone	10.8%	3.0	0.001	8.4%	2.4	0.008	30.3%	6.7	<0.0001

Models included block and plant type (emblings, unpruned seedlings, and pruned seedlings) as fixed factors, and half-sib family and clone (within family) as random factors. Var. expl. for random effects indicates the percentage of total random variance (Family, Clone, and Residual) explained by each component.