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Media type:
E-Article
Title:
Restoring particulate and mineral-associated organic carbon through regenerative agriculture
Contributor:
Prairie, Aaron M.;
King, Alison E.;
Cotrufo, M. Francesca
Published:
Proceedings of the National Academy of Sciences, 2023
Published in:
Proceedings of the National Academy of Sciences, 120 (2023) 21
Language:
English
DOI:
10.1073/pnas.2217481120
ISSN:
0027-8424;
1091-6490
Origination:
Footnote:
Description:
<jats:p>Sustainability of agricultural production and mitigation of global warming rely on the regeneration of soil organic carbon (SOC), in particulate organic carbon (POC) and mineral-associated organic carbon (MAOC) forms. We conducted a global systematic meta-analysis of the effects of regenerative management practices on SOC, POC, and MAOC in cropland, finding: 1) no-till (NT) and cropping system intensification increase SOC (11.3% and 12.4%, respectively), MAOC (8.5% and 7.1%, respectively), and POC (19.7% and 33.3%, respectively) in topsoil (0 to 20 cm), but not in subsoil (>20 cm); 2) experimental duration, tillage frequency, the intensification type, and rotation diversity moderate the effects of regenerative management; and 3) NT synergized with integrated crop–livestock (ICL) systems to greatly increase POC (38.1%) and cropping intensification synergized with ICL systems to greatly increase MAOC (33.1 to 53.6%). This analysis shows that regenerative agriculture is a key strategy to reduce the soil C deficit inherent to agriculture to promote both soil health and long-term C stabilization.</jats:p>