Early detection of plant diseases using spectral data

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dc.contributor.authorOwomugisha, Godliver
dc.contributor.authorNuwamanya, Ephraim
dc.contributor.authorQuinn, A. John
dc.contributor.authorBiehl, Michael
dc.contributor.authorMwebaze, Ernest
dc.date.accessioned2026-03-14T16:54:51Z
dc.date.available2026-03-14T16:54:51Z
dc.date.issued2020
dc.descriptionArticle
dc.description.abstractEarly detection of crop disease is an essential step in food security. Usually, the detection becomes possible in a stage where disease symptoms are already visible on the aerial part of the plant. However, once the disease has manifested in different parts of the plant, little can be done to salvage the situation. Here, we suggest that the use of visible and near infrared spectral information facilitates disease detection in cassava crops before symptoms can be seen by the human eye. To test this hypothesis, we grow cassava plants in a screen house where they are inoculated with disease viruses. We monitor the plants over time collecting both spectra and plant tissue for wet chemistry analysis. Our results demonstrate that suitably trained classifiers are indeed able to detect cassava diseases. Specifically, we consider Generalized Matrix Relevance Learning Vector Quantization (GMLVQ) applied to original spectra and, alternatively, in combination with dimension reduction by Principal Component Analysis (PCA). We show that successful detection is possible shortly after the infection can be confirmed by wet lab chemistry, several weeks before symptoms manifest on the plants.
dc.description.sponsorshipBusitema University
dc.identifier.citationOwomugisha, Godliver & Nuwamanya, Ephraim & Quinn, John & Biehl, Michael & Mwebaze, Ernest. (2020). Early detection of plant diseases using spectral data. 1-6. 10.1145/3378184.3378222.
dc.identifier.urihttps://doi.org/10.60682/wn5k-ae55
dc.language.isoen
dc.publisherAPPIS
dc.titleEarly detection of plant diseases using spectral data
dc.typeArticle
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