Sohng et al. (2025): Combining organic amendments with enhanced rock weathering shifts soil carbon storage in croplands
Jaeeun Sohng, Noah W. Sokol, Seth Whiteaker, Radomir Schmidt, Iris Holzer, Heath Goertzen, Jasquelin Peña, Benjamin Z. Houlton, Isabel Montañez et al., IN: Science of The Total Environment, https://doi.org/10.1016/j.scitotenv.2025.180179
Enhanced rock weathering (ERW) involves applying crushed silicate minerals to cropland soils to remove carbon dioxide and stabilize the global climate. If practiced widely, ERW has the potential to mitigate climate change and improve soil health and crop productivity. However, most ERW studies emphasize inorganic carbon (IC) chemistry, using model-based estimates and short-term mesocosms. Limited field data exist on how ERW interacts with organic amendments to affect organic carbon (C) cycling in soils. In a three-year field study in conventionally managed, irrigated maize fields, the authors monitored how key soil variables responded to crushed rock-alone, and in combination with compost and/or biochar.