Agricultural soils, Soil samples, Materials science, Soil composition, Iron alloys, Soil pollution, Agronomy, Nonmetals, Agriculture, Soil science, Steels, Soil organic carbon, Soil components, Alloys, Nitrogen, Carbon, Organic soils, Stainless steels, Soils, Agricultural sciences, Chemistry, Pedology, Edaphology, Physical sciences, Applied sciences, Biologi...