RT info:eu-repo/semantics/article
T1 Leaf Trait Hyperspectral Characterization of Castanea sativa Miller Affected by Dryocosmus kuriphilus Yasumatsu
A1 Pereira Obaya, Dimas
A1 Castedo Dorado, Fernando
A1 Sanz Ablanedo, Enoc
A1 Mejía Correal, Karen Brigitte
A1 Rodríguez Pérez, José Ramón
A2 Ingenieria Agroforestal
K1 Ingenierías
K1 Ingeniería agrícola
K1 Ingeniería forestal
K1 Asian chestnut gall wasp
K1 European chestnut
K1 Spectroscopy
K1 PLS-DA
K1 Random forest
AB [EN] While populations of the Asian chestnut gall wasp (Dryocosmus kuriphilus Yasumatsu), an invasive pest affecting the European chestnut (Castanea sativa Miller), have started to be controlled biologically, this pest still conditions chestnut tree development. With the aim of assessing plant health status as a means of monitoring gall wasp infestation, we used a field spectroradiometer to collect data from leaves taken from 83 trees in two chestnut orchards. We calculated characteristic spectral signatures for pest infestation, and after training and validation, developed classifiers to distinguish between different infestation levels. Several partial least square discriminant analysis (PLS-DA) and random forest (RF) models were fitted with reflectance and transformed values to obtain characteristic curves reflecting infestation. Four wavelengths (560 nm, 680 nm, 1400 nm, and 1935 nm) were identified as showing the greatest differences between curves. The best overall accuracy (69.23%) was achieved by an RF model fitted with reflectance transformed values. Lower overall accuracy (26.92%) was achieved in distinguishing between infestation levels. In conclusion, while more specific differences in infestation levels were not detectable, our method successfully discriminated between gall absence and presence.
PB MDPI
LK https://hdl.handle.net/10612/17859
UL https://hdl.handle.net/10612/17859
NO Pereira-Obaya, D., Castedo-Dorado, F., Sanz-Ablanedo, E., Mejía-Correal, K. B., & Rodríguez-Pérez, J. R. (2023). Leaf trait hyperspectral characterization of Castanea sativa Miller affected by Dryocosmus kuriphilus Yasumatsu. Agronomy, 13(3), 923. https://doi.org/10.3390/agronomy13030923
DS BULERIA. Repositorio Institucional de la Universidad de León
RD 06-jun-2024