Estimation of water stress of plant by vibration measurement of leaf using acoustic radiation force

Acoustical Science and Technology

Tsuneyoshi Sugimoto¹  Motoaki Sano¹  Sakae Shibusawa²  Motoyoshi Ohaba²  Kaoru Yamagishi¹  Toshiaki Sugihara²  Takashi Shirakawa¹  Yutaka Nakagawa¹ 

[1] Graduate School of Engineering, Toin University of Yokohama;Institute of Agriculture, Tokyo University of Agriculture and Technology

关键词: Water stress of plant;    Vibration measurement of leaf;    Acoustic radiation force;   

DOI  :  10.1250/ast.36.248

学科分类：声学和超声波

来源: Acoustical Society of Japan

【 摘 要 】

References(26)In order to estimate the water stress of a plant, the natural frequency of the leaf-stalk system was investigated. As a means of vibrating the leaf, acoustic radiation force was utilized, and the successive measurement of the natural frequency of ``komatsuna'', which was cultivated in a pot of soil, was performed for a week until wilting after stopping irrigation. As a result, it was found that the natural frequency is decreased drastically by the wilting of the leaf before the drooping occurs. In addition, daily variation was also observed in the early days, but it was gradually suppressed as the day went on. These behaviors were discussed referring to a simple cantilever beam model. In conclusion, it was ascertained that the acoustic radiation force is efficient for vibrating a leaf-stalk system. Furthermore, it was confirmed that measuring the natural frequency of the leaf-stalk system is effective for the early detection of water stress of a plant.

【 授权许可】

Unknown