SOIL HEALTH MANAGEMENT AND SUSTAINABLE AGRICULTURAL PRACTICES FOR IMPROVING CROP PRODUCTIVITY AND ECOSYSTEM SERVICES

Abstract

Soil health is fundamental to global ecosystem stability, agricultural sustainability, and food security. This review synthesizes current knowledge on soil health indicators, standardized assessment frameworks, and sustainable agronomic management practices for improving crop productivity and ecosystem service delivery. The scientific paradigm has evolved from the narrow concept of "soil quality" to the holistic, dynamic concept of "soil health," recognizing soil as a self-regulating biological matrix. Key indicators span physical (bulk density, aggregate stability, water infiltration), chemical (pH, cation exchange capacity, available phosphorus), and biological (microbial biomass carbon, mineralizable nitrogen, β-glucosidase activity, metabolic quotient) domains, with soil organic carbon acting as the central cross-cutting variable. Minimum Data Sets within standardized frameworks including CASH, SMAF, SHAPE, HAST, and VESS convert heterogeneous indicator values into actionable management insights while distinguishing inherent from dynamic soil properties. Meta-analytic synthesis reveals that no-till in isolation incurs a 5.7–12% global yield penalty; however, integrated Conservation Agriculture combining zero tillage, residue retention, and crop diversification eliminates this penalty and increases yields in rainfed dryland environments. Leguminous cover crops increase the mineralizable nitrogen pool by 211%, while diversified rotations increase it by 44%. Biochar amendments increase soil organic carbon stocks by 29% and reduce methane emissions by 51.31%. Precision agriculture integrating IoT sensors, AI, and variable-rate technology enables targeted, spatially explicit soil management. Collectively, these practices enhance provisioning, regulating, and supporting ecosystem services, building agricultural resilience against climate shocks.