Résumé:
This study focused on isolating and identifying effective Plant Growth-Promoting Rhizobacteria (PGPR)
strains from earthworm castings. Earthworm castings, rich in nutrients and beneficial microbes, were found
to be a significant source of PGPR. The isolated PGPR strains demonstrated their ability to solubilize
phosphate, calcium, and potassium, produce siderophores and auxin, which are essential for plant growth.
The use of PGPR supports sustainable agriculture by reducing the need for chemical fertilizers and
pesticides, promoting healthier crops, and minimizing environmental impact. The findings highlight the
potential of earthworm castings in sustainable agricultural practices and the importance of leveraging
natural interactions between earthworms, beneficial bacteria, and plants. Future research should focus on
wider application and long-term field studies to validate the effectiveness of these PGPR strains in diverse
agricultural settings. Advanced genomic and biotechnological tools can further optimize PGPR strains,
contributing to resilient agricultural systems that meet growing food demands while preserving
environmental health. This research represents a significant step towards sustainable and productive
farming practices .
