Wanderson de Sousa Mendes, Tomislav Hengl, Jonathan Sanderman, Katherine Todd-Brown, Leandro Leal Parente, Asa Gholizadeh Essentially, the soil spectroscopy (SoilSpec) refers to the detection and analysis of the interaction between soil constituents and light (e.g. electromagnetic radiation) mainly across the (i) visible (Vis, 350 – 780 nm), (ii) near-infrared (NIR, 780 – 2500 nm), and ...