Are We Heading Toward Peak Fertilizer? | Mother Jones

You’ve heard of peak oil—the idea that the globe’s easy-to-get-to petroleum reserves are largely cashed, and most of what’s left is the hard stuff, buried in deep-sea deposits or tar sands. But what about peak phosphorus and potassium? These elements form two-thirds of the holy agricultural triumvirate of nitrogen,phosphorus, and potassium (also known as NPK, from their respective markers in the periodic table). These nutrients, which are essential for plants to grow, are extracted from soil every time we harvest crops, and have to be replaced if farmland is to remain productive.

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About Rob Symons

My name is Rob Symons. I live in Pietermaritzburg, kwaZulu-Natal, South Africa. MuthiMuthi is my Zulu nickname which means tall tree. I am an Organic Farmer and an environmentalist. I live and work on Broadleaze Farm in the Mkondeni valley on the eastern outskirts of Pietermaritzburg.
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