![Author ORCID: We display the ORCID iD icon alongside authors names on our website to acknowledge that the ORCiD has been authenticated when entered by the user. To view the users ORCiD record click the icon. [opens in a new tab]](https://chemrxiv.org/engage/assets/public/chemrxiv/images/logos/orcid.png)
Abstract
Volcanic ash is a multi-nutrient mineral fertilizer whose catalytic mechanism of action, replenishing trace metals necessary to soil bacterial enzymes for the efficient biogenochemical cycling of key elements such as N, C, P and S, ensures use of relatively small amounts to fertilize large soil surfaces. Chiefly demonstrated in the course of the 2010s in Russia’s Kamchatka and in Indonesia, two world’s areas hosting highly active volcanoes, these findings remain poorly known. Fulfilling the principles of the emerging circular economy, the large-scale use of readily available and overabundant tephra as agricultural fertilizer is a significant economic opportunity for both farmers and populations living near active volcanoes, affording also important environmental advantages. Providing a unified picture, this study will hopefully accelerate such progress.
