Microbes offer early window into soil health gains from regenerative practices, study finds

Researchers from North Carolina State University and collaborators have found that biological indicators such as microbial biomass, microbial necromass, and enzyme activity can provide early signals of improved soil carbon storage from regenerative farming practices, years before traditional soil carbon tests can detect changes. Their study in loblolly pine and pecan agroforestry systems showed that these microbial metrics are closely linked to the soil carbon cycle, with microbial necromass being especially important for long-term carbon storage. The research highlights how different agroforestry systems and management practices influence these biological proxies, and suggests that minimum tillage remains effective for soil carbon accumulation. This approach could enable faster assessment and refinement of regenerative agriculture strategies by offering earlier evidence of soil health improvements.