Fig. 1 | Scientific Reports

Fig. 1

From: Effects of solar elevation angle on the visible light vegetation index of a cotton field when extracted from the UAV

Fig. 1

Aerial photography of the Phantom 4 RTK drone prepares photos and Phantom 4 RTK multirotor UAV visible light image of the cooton experimental field on 14 July 2023. From left to right (west to east) the columns are numbered I, II, III, IV, V, and VI. The upper left corner (northwest) is plot I-1 (I repeat treatment 1 without nitrogen fertilization), and the lower left corner (southwest) is plot I-5 (I repeat treatment 5 with nitrogen fertilization).

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