Extended Data Fig. 9: Potential mineral nutrient release rates from ERW.
From: Substantial carbon drawdown potential from enhanced rock weathering in the United Kingdom
Modelled mineral nutrient release rates from ERW. P- and K-mass transfer from rocks to soil are the mean of simulations for three UK-specific basalts and two p80 values (10 µm and 100 µm diameter). Shaded envelopes show the 95% confidence limits. Dashed lines indicate upper and lower range of major UK tillage crops. Scenario 1 has fewest grid cells but ERW deployment starts early and average release rate increases with repeated rock dust applications. Scenarios 2 and 3 add more grid cells with initial lower release rates causing the average release rate to remain constant. Elements are likely to be retained in the soil column on ion exchange clays (K), and sorbed on secondary minerals (P), for example iron oxides.
