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Detection of Diseases and Volatile Discrimination of Plants: An Electronic Nose and Self-Organizing Maps Approach
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Author(s): Reza Ghaffari (University of Warwick, UK), Fu Zhang (University of Warwick, UK), D. D. Iliescu (University of Warwick, UK), Evor L. Hines (University of Warwick, UK), Mark S. Leeson (University of Warwick, UK)and Richard Napier (University of Warwick, UK)
Copyright: 2011
Pages: 17
Source title:
Intelligent Systems for Machine Olfaction: Tools and Methodologies
Source Author(s)/Editor(s): Evor L. Hines (University of Warwick, UK)and Mark S. Leeson (University of Warwick, UK)
DOI: 10.4018/978-1-61520-915-6.ch008
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Abstract
The diagnosis of plant diseases is an important part of commercial greenhouse crop production and can enable continued disease and pest control. A plant subject to infection typically releases exclusive volatile organic compounds (VOCs) which may be detected by appropriate sensors. In this work, an Electronic Nose (EN) is employed as an alternative to Gas Chromatography - Mass Spectrometry (GC-MS) to sample the VOCs emitted by control and artificially infected tomato plants. A case study in which powdery mildew and spider mites may be present on tomato plants is considered. The data from the EN was analyzed and visualized using Fuzzy C-Mean Clustering (FCM) and Self-Organizing Maps (SOM). The VOC samples from healthy plants were successfully distinguished from the infected ones using the clustering techniques. This study suggests that the proposed methodology is promising for enhancing the automated detection of crop pests and diseases and may be an attractive tool to be deployed in horticultural settings.
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