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Title

Detection of white root rot in avocado trees by remote sensing

AuthorsPérez-Bueno, María Luisa; Pineda Dorado, Mónica ; Vida, Carmen; Fernández-Ortuño, D.; Torés, J. A.; De Vicente, A.; Cazorla, Francisco Manuel; Barón Ayala, Matilde
KeywordsNDVI
Machine learning
Thermal imaging.
Issue Date2019
PublisherAmerican Phytopathological Society
CitationPlant Disease 103: 1119-1125 (2019)
AbstractWhite root rot, caused by the soilborne fungus Rosellinia necatrix, is an important constraint to production for a wide range of woody crop plants such as avocado trees. The current methods of detection of white root rot are based on microbial and molecular techniques, and their application at orchard scale is limited. In this study, physiological parameters provided by imaging techniques were analyzed by machine learning methods. Normalized difference vegetation index (NDVI) and normalized canopy temperature (canopy temperature - air temperature) were tested as predictors of disease by several algorithms. Among them, logistic regression analysis (LRA) trained on NDVI data showed the highest sensitivity and lowest rate of false negatives. This algorithm based on NDVI could be a quick and feasible method to detect trees potentially affected by white root rot in avocado orchards.
Publisher version (URL)http://dx.doi.org/10.1094/PDIS-10-18-1778-RE
URIhttp://hdl.handle.net/10261/216639
DOIhttp://dx.doi.org/10.1094/PDIS-10-18-1778-RE
Identifiersdoi: 10.1094/PDIS-10-18-1778-RE
issn: 0191-2917
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