Non-destructive Method for Root Elongation Measurement in Soil Using Acoustic Emission Sensors : I.Vertical measurement of single root elongation
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概要
- 論文の詳細を見る
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.
- 日本作物学会の論文
著者
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Sugimoto Yukihiro
Arid Land Research Center, Tottori Univ.
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Sugimoto Yukihiro
Arid Land Research Center Tottori Univ.
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INANAGA Shinobu
Arid Land Research Center, Tottori University
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Matsuura Asana
Facutly of Agriculture, Kyushu Tokai University
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Shimotashiro Tomohide
Arid Land Research Center, Tottori University
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Ashimori Masami
Industrial Research Institute, Tottori prefecture
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Matsuura Asana
Arid Land Research Center, Tottori University
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Inanaga S
Tottori Univ.
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Inanaga Shinobu
Arid Land Res. Center Tottori Univ.
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Matsuura Asana
Facutly Of Agriculture Kyushu Tokai University
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Sugimoto Y
Tottori Univ. Tottori Jpn
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Yamamoto S
Department Of Bioengineering Tokyo Institute Of Technology
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Inanaga S
Arid Land Research Center Tottori University
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Ashimori Masami
Industrial Research Institute Tottori Prefecture
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