Table 1.
Period | Healthy (T0) canopy spectra | Diseased (T1) canopy spectra | Visual assessment (VA) | Leaf collection (C) and imagery assessment | Growth stage† |
---|---|---|---|---|---|
Week 0* | 26-May-16 | 05-May-16 | 20-May-16 (VA1) | 20-May-16 (C1) | Booting to heading |
Week 1 | 22-Jun-16 | 22-Jun-16 | 21-Jun-16 (VA2) | End of flowering | |
Week 2 | 27-Jun-16 | 29-Jun-16 (VA3) | Early fruiting | ||
01-Jul-16 | 01-Jul-16 | 04-Jul-16 (C2) | |||
Week 3 | 07-Jul-16 | 07-Jul-16 | End of fruiting | ||
Week 4 | 11-Jul-16 | 11-Jul-16 | Early ripening | ||
Week 5 | 18-Jul-16 | 18-Jul-16 | Ripening | ||
Week 6 | 20-Jul-16 | 20-Jul-16 |
Week 0 denotes the period at which the second (25 May) and third (6 Jun) fungicide applications were performed, and therefore it was considered as the beginning period of STB infections. Bold font indicates the paired spectral measurements for both healthy and diseased plots.
Growth stage was estimated based on the T0 plots in the main experiment.