Microbial inoculants for soil restoration: A Practical Framework for Risk-Governed Stewardship

This is a Preprint and has not been peer reviewed. This is version 4 of this Preprint. You must log in to post a comment. There are no comments or no comments have been made public for this article. This is a Preprint and has not been peer reviewed. This is version 4 of this Preprint. Add a Comment You must log in to post a comment. Comments There are no comments or no comments have been made public for this article. Global soil degradation and increasing reliance on chemical inputs threaten agricultural sustainability, driving interest in microbial inoculants as tools for soil restoration. These biological products have the potential to enhance nutrient cycling, improve soil structure, and support plant resilience, but their environmental release raises important safety and stewardship considerations. Here, we propose a risk-proportional framework for the responsible deployment of microbial inoculants grounded in release-based stewardship. The framework integrates genome-resolved strain identification, exclusionary hazard screening, bioassay-based risk triage, ecological testing under realistic conditions, and monitored field deployment. Drawing on evidence from microbial ecology and invasion biology, we highlight how inoculants can alter resident microbial communities, influence ecosystem function, and, in some cases, facilitate gene flow, underscoring the need for context-dependent risk assessment. We further outline a federated, genome-informed data infrastructure to support traceability, cross-jurisdiction learning, and adaptive management. Together, this approach provides a scalable and scientifically grounded pathway to balance innovation and safety, enabling microbial technologies to contribute to soil restoration and climate-resilient agriculture. https://doi.org/10.32942/X2QH3F Life Sciences Microbial inoculants, soil restoration, microbiome engineering, ecological risk assessment, release-based stewardship, microbial inoculants, soil restoration, microbiome engineering, ecological risk assessment, released-based stewardship Published: 2026-03-24 08:23 Last Updated: 2026-03-26 08:02 Conflict of interest statement: None Data and Code Availability Statement: Not applicable Language: English