Pesticides and the microbial world: a review of disturbance, resilience, and the road to recovery.

Abstract

Pesticides are widely used tools in modern crop production, yet their impacts on soil ecosystems are often context-dependent and not fully quantified. Over several decades, research has shown that pesticides and their metabolites can alter the diversity, structure, and functional capacity of soil microbial communities, with effects that may be either inhibitory or stimulatory depending on the context. However, their long-term influence on microbial resilience and recovery remains insufficiently understood. This review synthesizes current knowledge by integrating microbial ecology, soil chemistry, and environmental toxicology, with a focus on how pesticides alter microbial community composition and enzyme-mediated nutrient cycling. Particular attention is given to key soil enzymes, such as dehydrogenases, ureases, and phosphatases, which serve as sensitive, though sometimes limited, indicators of soil disturbance, and recovery. Furthermore, the review emphasizes how soil physicochemical properties, contamination history, and management practices collectively modulate microbial responses to pesticide exposure. By bringing these perspectives together, this synthesis offers a conceptual framework for interpreting pesticide-microbe interactions and provides a foundation for monitoring soil health and guiding sustainable pest management strategies that maintain agricultural productivity while preserving soil vitality.