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Peak phosphorus: our most important nutrient running out
Peak phosphorus: our most important nutrient running out
Jan 11, 2010 · It has no synthetic alternative and some scientists believe supplies may already be in a terminal decline. But there is still no international effort to ...

Increasing the availability of phosphorus is a key technique used by farmers of all persuasions in order to improve their yields. The Ecologist is the world's leading environmental affairs platform, published by The Resurgence Trust. Some groups, made up of scientists rather than clairvoyants, are placing the date of peak phosphorus in the near future.

In 2007, physicist Patrick Déry applied to phosphate rock the same statistical method that has been used consistently to predict when oilfields will peak. The world had a preview of such a situation in 2008, when the mismatch between demand and supply caused a 700 percent increase in the price of phosphate over just a year. Problematically though, high quality information and co-ordinated policy responses to the challenge of peak phosphorus are almost non-existent. Suddenly however, it seems the limits are almost upon us. The risks could be significant, but there is very little data or testing on the radioactivity or toxicity of crude phosphate.



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In contrast to other vital agricultural inputs, such as water or nitrogen, there is no international body responsible for phosphorus resources. Most organic farms, he says, are on land that once received chemical phosphorus fertilisers, and some are living off this legacy, gradually depleting the soil of phosphorus. Until now, the main concerns about phosphorus production were how to manage the of phosphate mining and reducing what ecologists call eutrophication – the toxic growth of algae when excess phosphorus spreads from the land into watercourses.

Compared to how important phosphorus is to life's flourishing, it is often the hardest nutrient for organisms to obtain in the natural world, making it a 'limiting factor' of many ecosystems, or as science-fiction writer Isaac Asimov wrote in As in the wild, so on our fields - phosphorus, alongside nitrogen and potassium, is one of the three major nutrients needed for plant growth. According to Dana Cordell of the Institute for Sustainable Futures at the University of Technology, Sydney, and co-founder of the Global Phosphorus Research Initiative, the strategy should involve 'dramatically' reducing demand and recovering and reusing the phosphorus that currently is leaking from the system. The world had a preview of such a situation in 2008, when the mismatch between demand and supply caused a 700 percent increase in the price of phosphate over just a year. The Ecologist is the world's leading environmental affairs platform, published by The Resurgence Trust. In contrast with crude phosphate, another, more sustainable source of phosphorus is highly regulated – human waste.