Translations:Fertilizer/82/en
External links
Wikimedia Commons has media related to Fertilizers.
- Nitrogen for Feeding Our Food, Its Earthly Origin, Haber Process Archived 11 January 2017 at the Wayback Machine
- International Fertilizer Industry Association (IFA)
- Agriculture Guide, Complete Guide to Fertilizers and Fertilization (archived 6 October 2011)
- Nitrogen-Phosphorus-Potassium Values of Organic Fertilizers. Archived 26 February 2021 at the Wayback Machine.