Summary
Terrestrial enhanced weathering (EW) of silicate rocks, such as crushed basalt, on farmlands is a promising scalable atmospheric carbon dioxide removal (CDR) strategy that urgently requires performance assessment with commercial farming practices. We report findings from a large-scale replicated EW field trial across a typical maize-soybean rotation on an experimental farm in the heart of the United Sates Corn Belt over 4 y (2016 to 2020). We show an average combined loss of major cations (Ca<sup>2+</sup> and Mg<sup>2+</sup>) from crushed basalt applied each fall over 4 y (50 t ha<sup>-1</sup> y<sup>-1</sup>) gave a conservative time-integrated cumulative CDR potential of 10.5 ± 3.8 t CO<sub>2</sub> ha<sup>-1</sup>. Maize and soybean yields increased significantly (<i>P</i> < 0.05) by 12 t
Dig deeper with Pulse AI.
Pulse AI has read the whole catalogue. Ask about this record, its theme, or how the findings apply to UK farming and policy — every answer cites the underlying studies.