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Table 1 Average values of root volume, root area, root length, and root diameter per sampling point using the volumetric ring method

From: Evaluation of the root system of Vetiver grass (Chrysopogon zizanioides L. Roberty) using different sampling methods

Samples deptha (m)

Analyzed variablesb

Root volume (mm3)

Root area (mm−2)

Root length (m)

Root diameter (mm)

Mean

Log10*

Mean

Log10

Mean

Log10

Mean

Log10

0.00–0.10

20.864

0.721 a

105.305

0.601 a

0.451

0.698 a

0.251

− 0.544 e

0.10–0.20

7.170

0.713 a

39.162

0.486 e

0.216

0.676 b

0.302

− 0.530 d

0.20–0.30

9.015

0.675 b

42.594

0.586 ab

0.197

0,609 d

0.314

− 0.515 c

0.30–0.40

4.470

0.677 b

22.193

0.566 bc

0.139

0.633 c

0.337

− 0.491 a

0.40–0.50

4.230

0.664 c

21.943

0.602 a

0.114

0.643 c

0.335

− 0.494 a

0.50–0.60

3.964

0.663 c

20.136

0.591 ab

0.126

0.566 e

0.225

− 0.541 a

0.60–0.70

1.170

0.669 bc

9.890

0.545 cd

0.149

0.480 g

0.301

− 0.530 d

0.70–0.80

1.247

0.673 bc

9.405

0.528 de

0.091

0.480 f

0.316

− 0.511 c

0.80–0.90

1.278

0.687 b

8.833

0.513 e

0.089

0.458 f

0.327

− 0.500 b

0.90–1.00

2.817

0.677 b

15.875

0.551 cd

0.104

0.610 d

0.334

− 0.489 a

f-value

7.032

18.206

8.0112

16.434

378.100

165.404

5.993

109.216

Deviation error

112.563

 

514.015

 

22.202

 

0.113

 

df

30,735

2955

30,736

2956

30,736

2956

30,736

2956

Valid samples

30,736

29,557

30,737

29,557

30,737

29,557

30,737

29,557

  1. *Means with logarithmic transformation followed by the same letter do not differ by Duncan’s test at 5% probability
  2. aNumber of observations (n) = 30,737