Table 2.
Minimum, maximum, mean value, range, standard deviation (SD) and Sum of the square of NDVI data derived from Sentinel-2 images at different Sunflower crop growth stages (BBCH scale) and Days After Sowing (DAS).
| NDVI | |||||||
|---|---|---|---|---|---|---|---|
| Crop Growth Stage BBCH scale (Meier, 2001) | DAS | Min | Max | Range | Mean Value | SD | Sum of the squares |
| Germination | 8 | 0.09 | 0.28 | 0.19 | 0.15 | 0.07 | 19.0 |
| Leaf Development | 18 | 0.17 | 0.4 | 0.23 | 0.22 | 0.02 | 1.65 |
| Inflorescence development | 53 | 0.16 | 0.79 | 0.63 | 0.54 | 0.14 | 56.9 |
| Inflorescence development | 58 | 0.18 | 0.86 | 0.68 | 0.60 | 0.15 | 63.2 |
| Flowering | 63 | 0.16 | 0.87 | 0.71 | 0.61 | 0.15 | 61.5 |
| Flowering | 68 | 0.19 | 0.84 | 0.65 | 0.56 | 0.13 | 48.8 |
| Development of fruit | 78 | 0.18 | 0.81 | 0.63 | 0.59 | 0.14 | 54.4 |
| Ripening | 88 | 0.15 | 0.75 | 0.60 | 0.43 | 0.10 | 29.8 |
| Ripening | 98 | 0.12 | 0.69 | 0.57 | 0.32 | 0.07 | 14.7 |