Onion Allium cepa L. which is belonging to the family Liliaceae, is one of the greatest vital crops field worldwide. In this current work, Stored, high throughput and green synthesized silver nanoparticles AgNPs 2000 ppm were used as an eco friendly nano fertilizer for onion in field conditions. ...In conclusion, AgNPs can be used as an eco friendly nano fertilizer with a recommended dose of 20 ppm which is considered a safe dose to the environment and human health too, compared with the crazy doses of the available commercial products....