Chiaravalloti et al. (2023): Mitigation of soil nitrous oxide emissions during maize production with basalt amendments

Isabella Chiaravalloti, Nicolas Theunissen, Shuang Zhang, Jiuyuan Wang, Fengchao Sun, Ayesha A. Ahmed, Evelin Pihlap, Christopher T. Reinhard, Noah J. Planavsky IN: Front. Clim., Sec. Negative Emission Technologies 5, https://doi.org/10.3389/fclim.2023.1203043

Amending soils with fine-grained basalt is gaining traction as a carbon dioxide removal (CDR) pathway, and model simulations suggest that this process may also significantly decrease soil N₂O emissions. Here, the authors continuously measure N₂O fluxes from large-scale maize mesocosms in a greenhouse setting and use a machine learning framework to assess the relative importance of the levers on N₂O fluxes. They observe significant decreases in cumulative N₂O emissions (between 29–32%) from mesocosm systems with basalt addition.

LINK