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Table 3 Results for the individual stump observations

From: The effect of coppice management on stump volume recovery in mechanized operations

Treatment

 

Coppice double

Coppice single

Planted

 

Observations

n

365

486

543

p value

Parameter

 

Mean

SD

Mean

SD

Mean

SD

 

DBH

cm

17.3a

4.9

15.2b

5.1

17.0a

4.7

<0.0001

Height

m

23.1a

4.0

21.3b

4.4

23.0a

4.3

<0.0001

Stem volume

m3

0.3299a

0.2245

0.1802b

0.1643

0.2310c

0.1555

<0.0001

Stump height*

cm

3.49a

0.08

2.20b

0.08

3.05a

0.07

0.0007

Stump waste

m3

0.0013a

0.0034

0.0005b

0.0018

0.0006c

0.0015

<0.0001

Waste over stem

%

0.45a

1.18

0.33b

1.08

0.36b

0.98

<0.0001

  1. Different lowercase letters indicate that the difference between the means for the different treatments is significant at the <0.05 level. Stump height* refers to the excess stump height above the 10 cm specification
  2. SD standard deviation