Phosphorus Hubbert peak theory

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phosphorus supplies essential farming , depletion of reserves estimated @ somewhere 60 130 years. according 2008 study, total reserves of phosphorus estimated approximately 3,200 mt, peak production @ 28 mt/year in 2034. individual countries supplies vary widely; without recycling initiative america s supply estimated around 30 years. phosphorus supplies affect agricultural output in turn limits alternative fuels such biodiesel , ethanol. increasing price , scarcity (global price of rock phosphate rose 8-fold in 2 years mid 2008) change global agricultural patterns. lands, perceived marginal because of remoteness, high phosphorus content, such gran chaco may more agricultural development, while other farming areas, nutrients constraint, may drop below line of profitability.








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