Microbiome Interventions for Sustainable Agriculture: Ecological Persistence, Context Dependence and the Road from Discovery to Field Application
Ms. Swati Shikha *
University Department of Botany, Ranchi University, Ranchi, Jharkhand, 834008, India.
*Author to whom correspondence should be addressed.
Abstract
Microbiome-based interventions are increasingly proposed as tools for reducing agricultural dependence on synthetic fertilisers and pesticides while improving crop nutrition, stress tolerance and disease suppression. Yet a persistent translational gap separates mechanistically compelling experiments from reliable field performance. This critical narrative review examines that gap through three linked questions: what determines ecological persistence after inoculation, why performance is strongly context dependent, and how discovery pipelines should change to support field application. Literature published primarily from 2010 to 15 July 2026 was identified through live searches of PubMed, Europe PMC, AGRIS, OpenAlex, Crossref, DOAJ, Semantic Scholar and Google Scholar, supplemented by citation searching and verification against DOI and journal records. The evidence indicates that inoculant function is not an intrinsic property of a strain or consortium alone. Performance emerges from interactions among microbial traits, resident community resistance, host genotype and developmental stage, soil physicochemistry, climate, management, formulation and delivery. Persistence is likewise multidimensional: long-term survival, repeated host colonisation, functional persistence and durable restructuring of resident microbiomes can diverge. Controlled synthetic-community studies have clarified interaction rules and keystone effects, but their predictive value declines when transferred into heterogeneous soils where priority effects, resource limitation and resident microbiota constrain establishment. Meta-analyses support average benefits of biofertilisation and mycorrhizal inoculation, while simultaneously showing large moderator effects and substantial heterogeneity. The strongest translational strategy is therefore not universal inoculant optimisation but context-aware product development: ecologically matched strain sourcing, mechanistic compatibility testing, formulation as part of the biological design, multi-environment field trials, strain-resolved monitoring and predefined performance domains. Microbiome interventions can contribute to sustainable agriculture, but dependable impact will require a shift from selecting microbes for desirable traits in isolation to engineering and validating plant–microbe–soil systems under realistic ecological constraints.
Keywords: Agricultural microbiome, bioinoculants, ecological persistence, rhizosphere, synthetic microbial communities, context dependence, field translation, sustainable intensification