Click on the image to see a larger version of the whole document.
This leaflet from the 'Agricultural Industries Confederation' explains some of the reasons why the use of chemical (mineral) fertilisers is important.
This article, published on 12 March 2013, expains that "enriching crops by adding a naturally-occurring soil mineral to fertilisers could potentially help to reduce disease and premature death in the African country of Malawi".
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Click on the image above to see a larger version of this booklet from The European Fertilizer Industry.
It highlights some of the benefits they see in the use of fertilizers.