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Plant and Soil

, Volume 52, Issue 1, pp 69–76 | Cite as

A machine for determining root length

  • D. Richards
  • F. H. Goubran
  • W. N. Garwoli
  • M. W. Daly
Article

Summary

A machine for determining the root length of a sample is described. The machine is basically an opto-electronic scanner. Root segments are cut and placed in water on a glass plate (375×375 mm). The interruption of a light beam moving across the root sample is detected by a photo-diode and the total root length computed. Using this machine a root sample can be measured in less than 3 minutes. Detailed calibration was only conducted up to 50 m although samples as large as several hundred metres can be measured using this machine.

The machine has a high degree of accuracy comparable with or better than other reported methods for determining root length.

Key Words

Roots Growth Measurement Root length Electronics 

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References

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Copyright information

© Martinus Nijhoff Publishers 1979

Authors and Affiliations

  • D. Richards
    • 1
  • F. H. Goubran
    • 1
  • W. N. Garwoli
    • 2
  • M. W. Daly
    • 2
  1. 1.Victorian Department of Agriculture Burwood HighwayHorticultural Research InstituteKnoxfieldAustria
  2. 2.Department of Communication and Electronic EngineeringRoyal Melbourne Institute of TechnologyMelbourneAustralia

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