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International Journal of Optics
Volume 2016, Article ID 4543094, 6 pages
Research Article

Experimental Research of Reliability of Plant Stress State Detection by Laser-Induced Fluorescence Method

Faculty of Radioelectronics and Laser Techniques, Department of Laser and Optoelectronics Systems, Bauman Moscow State Technical University, 2-ya Baumanskaya Ulitsa, Moscow 105005, Russia

Received 9 November 2015; Revised 31 January 2016; Accepted 11 February 2016

Academic Editor: Giulio Cerullo

Copyright © 2016 Yury Fedotov et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Experimental laboratory investigations of the laser-induced fluorescence spectra of watercress and lawn grass were conducted. The fluorescence spectra were excited by YAG:Nd laser emitting at 532 nm. It was established that the influence of stress caused by mechanical damage, overwatering, and soil pollution is manifested in changes of the spectra shapes. The mean values and confidence intervals for the ratio of two fluorescence maxima near 685 and 740 nm were estimated. It is presented that the fluorescence ratio could be considered a reliable characteristic of plant stress state.