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Carlo Leifert S Aconf2010

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The Soil Association

Presentation from Carlo Leifert (Newcastle University) at the Soil Association annual conference 4 February 2010, The Custard Factory, Birmingham

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Food Security What will limit crop yields in the future? Availability and costs of: Nitrogen (N = energy) Phosphorus (P) Potassium (K) COMMUNITY RESEARCH
Mineral N-fertiliser, energy use and carbon footprint of food production ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Why and when will Phosphorus become a bottleneck for crop yield? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],1 Fantel et al. (1985) Natural resources forum 9 :5-24
Nutrients limiting wheat yield in 1900 and 2000 and predicted 2100 yields without P-fertilisation Estimated wheat yield potential (t ha-1) 3 t ha -1 9 t ha -1 4 t ha -1 Yield potential associated with different nutrients:
Are we using Phosphorus and other mineral fertilisers efficiently? ,[object Object],[object Object],[object Object],[object Object],[object Object],1 Hirel et al. (2007) Journal of Experimental Botany 58: 2369-2387
What is the solution/way forward? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Thank you

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Carlo Leifert S Aconf2010

  • 1. Food Security What will limit crop yields in the future? Availability and costs of: Nitrogen (N = energy) Phosphorus (P) Potassium (K) COMMUNITY RESEARCH
  • 2.
  • 3.
  • 4. Nutrients limiting wheat yield in 1900 and 2000 and predicted 2100 yields without P-fertilisation Estimated wheat yield potential (t ha-1) 3 t ha -1 9 t ha -1 4 t ha -1 Yield potential associated with different nutrients:
  • 5.
  • 6.