Agronomic phosphorus imbalances across the world's croplands.

@article{MacDonald2011AgronomicPI,
  title={Agronomic phosphorus imbalances across the world's croplands.},
  author={Graham K. MacDonald and Elena M. Bennett and Philip G. Potter and Navin Ramankutty},
  journal={Proceedings of the National Academy of Sciences of the United States of America},
  year={2011},
  volume={108 7},
  pages={3086-91}
}
Increased phosphorus (P) fertilizer use and livestock production has fundamentally altered the global P cycle. We calculated spatially explicit P balances for cropland soils at 0.5° resolution based on the principal agronomic P inputs and outputs associated with production of 123 crops globally for the year 2000. Although agronomic inputs of P fertilizer (14.2 Tg of P·y(-1)) and manure (9.6 Tg of P·y(-1)) collectively exceeded P removal by harvested crops (12.3 Tg of P·y(-1)) at the global… CONTINUE READING
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