A fertilizer is an organic or inorganic material, natural or synthetic, that is added to a soil to supply plant nutrients essential to their growth.

We can clasificate them in inorganic, which are synthesized using one product that produces amonia, and in organic fertilizer, which come from organic materials like manure, worm castings, compost, seaweed or saltpeter.

But a use of fertilizers in excess can cause serious enviromental effects like: Eutrophication, Blue baby syndrome, soil acidification, persistent organic polluant, radioactive elment accumulation… The use of fertilizers contributes to Global Warming too, to the pollutants and soil degradation.

Al degradate soil by fertilizers.

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