Figure 3. NDSI Maps generated from Sentinel-2 Optical Multi-spectral data for – (A) 20TH November 2019, (B) 27TH December 2019 and, (C) 20THJanuary 2020
The maximum values of NDSI for first two dates were 0.78 and 0.87 respectively while after the application of fertilisers in January first week (as told by the local farmers), there was an increase in salinity levels and maximum value increased to 0.973.