**3. Results**

Figure 2 shows the variations in actual daily ETa values for cotton during the irrigation period when images from Sentinel-2 and Sentinel-3 were available.

**Figure 2.** Variation of the actual daily ETa for cotton plots. Comparison between Hubis methodology and the farmer practices.

Figure 3 shows the spatial distribution of the actual daily ETa values for the cultivation of cotton in the growing season when images from Sentinel-2 and Sentinel-3 were available. The plots are divided into "traditional" (farmer practices) and "experimental" (Hubis practices) areas. No other explanations are needed for the current study because more results between these plots are expected in future implementation of the program. The

daily ETa values (farmer practices) range from 0 mm (recorded in February) to a maximum of 10 mm (recorded in early August). Figure depicts only a part of the available image dates due to width issues. Additionally, Figure 3 presents the spatial variation in the daily ETa values for the cultivation of cotton (Hubis practices) for the entire period that satellite images were available. The daily ETa values range from min 0 mm (recorded in February 2021) to a max of 9.5 mm at the beginning of August 2021.

**Figure 3.** Spatial distribution examples of the actual daily ETa for the cultivation of cotton (Farmer practices) and cotton (Hubis).
