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Table 5 Analyses of variance for Model (5) showing the significance of the main and interactive effects of treatment, year (2003–2008) and height (0–6 m) on the incidence of Type 1 and 2 resin pockets

From: Effect of stem bending and soil moisture on the incidence of resin pockets in radiata pine

Source of variation

Degrees of freedom

Type 1

Type 2

  

F-value

P-value

F-value

P-value

Treatment

3, 16

4.87

0.014

1.00

0.42

Control versus stem bending

1, 16

14.15

0.0017

0.55

0.47

Test among the stem bending treatments

2, 16

0.26

0.78

1.20

0.33

Group

3, 16

1.94

0.16

0.67

0.58

Year

4, 552

8.88

<.0001

10.62

<.0001

Height class

5, 552

18.12

<.0001

23.85

<.0001