Non-destructive Method for Root Elongation Measurement in Soil Using Acoustic Emission Sensors

• SHIMOTASHIRO Tomohide

  Arid Land Research Center, Tottori University

• INANAGA Shinobu

  Arid Land Research Center, Tottori University

• SUGIMOTO Yukihiro

  Arid Land Research Center, Tottori University

• MATSUURA Asana

  Arid Land Research Center, Tottori University

• ASHIMORI Masami

  Industrial Research Institute

抄録

A new non-destructive method for the measurement of root elongation in soil was developed using acoustic emission (AE) sensors. Collisions between soil particles caused by the growth of the root tip generated sound pulses that were detected by the AE sensors. In a simulation experiment, using a stainless steel rod (d=1.3 mm), AE counts increased as the rod approached the sensor. The relative AE count (Ri) calculated from the values obtained from two sensors, vertically placed 15 mm apart, was only slightly influenced by the rod penetration rate and soil conditions, and linearly correlated with the distance between the rod tip and the center of the upper AE sensor. In the experiments using a maize primary root, Ri (Y) was significantly correlated with the distance (X) between the root tip and the center of the upper AE sensor as in the simulation experiment. Accordingly the root tip position could be estimated using the equation Y=0.994-0.0640X (r=0.883^**) . Calculated values for root elongation were comparable to those obtained from actual measurements.

収録刊行物

• Plant production science

  Plant production science 1 (1), 25-29, 1998-03-01

  日本作物学会

キーワード

• Acoustic emission
• Non-destructive method
• Primary root
• Root elongation
• Root tip
• Zea mays L

詳細情報

• CRID: 1570572701956732800
• NII論文ID: 110001720559
• NII書誌ID: AA11162156
• ISSN: 1343943X
• 本文言語コード: en
• データソース種別:
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