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Table 2 Comparison of EnRoot with the commercial minirhizotrons most cited in the literature

From: EnRoot: a narrow-diameter, inexpensive and partially 3D-printable minirhizotron for imaging fine root production

Characteristics

Minirhizotron system

EnRoot (this article)

CID bioscience CI-600

Bartz technology BTC-100X

RhizoSystems™, LLC

Manual minirhizotron

Price (~ €)

150

14,500

17,500

> 13,500

Waterproof camera

Yes

No

No

No

Theoretical resolution (µm/pixels)a

28

42

25

13

Image size (mm)

17 × 12

216 × 196

13.5 × 18

8.4 × 6.3

Capture time (s)

0 to 3

30 to 480b

Not indicated

Not indicated

Weight (imaging system only) (g)

250

750

450

6800

Size (mm)

Diameter: > 25

Length: all possible

Diameter: 63.5

Length: 1830

Diameter: 51

Length: 1820

Diameter: 50

Length: 2000

Battery life (h)

No battery needed

> 4

8

11

Magnifier

No

No

Yes

Yes

  1. aTheoretical resolution was calculated by dividing the size of the picture by the maximum resolution
  2. bFor scanning an image of 21.6 × 19.6 cm