Sludge compost: a double-edged sword for depleted soil restoration revealed by integrated multi-omics analysis
Xiaohu Dai
The prospective use of sludge compost for restoring depleted soils requires balancing its agronomic benefits against potential ecological risks. This study employed an integrated metagenomic and metabolomic approach to evaluate the dose-dependent effects of sludge compost on soil properties, maize growth, and rhizosphere microbial communities. Results showed that moderate compost application (≤15% w/w) enhanced soil nutrient availability, promoted root development, and enriched beneficial microb