Biogeosciences
Biogeosciences
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Articles | Volume 23, issue 4
Articles | Volume 23, issue 4
https://doi.org/10.5194/bg-23-1681-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-23-1681-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 23, issue 4
Research article
 | 
03 Mar 2026
Research article |  | 03 Mar 2026

Effects of basalt and biochar addition on base cations and trace metals in plants and soil in an urban field trial

Arthur Vienne, Jennifer Newell, Jasper Roussard, Rory Doherty, Siobhan F. Cox, Gary Lyons, and Sara Vicca

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Short summary
We explored whether adding crushed volcanic rock and charcoal to soil could help store inorganic carbon, improve plant growth and reduce harmful metals in crops. The crushed rock did not increase plant growth or inorganic carbon in soil and nutrients released from the rock may have moved into other stable soil forms rather than forming carbonates. In contrast, charcoal improved plant growth and reduced metal uptake. Using both rocks and charcoal together offered no extra observable benefits.
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