Soil salinization is a global ecological and environmental problem in arid and semi-arid areas that can be ameliorated via soil management. visible-near infrared-shortwave infrared (VNIR-SWIR) spectroscopy can be adapted to rapidly monitor soil salinity content. This study explored the potential of Grünwald–Letnikov fractional-order derivative (FOD). feature band selection methods. https://parisnaturalfoodes.shop/product-category/macacacao/