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Nitrogen Footprint of Food Production in the EU-27 and Africa

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Presentation given on the 6th Nitrogen Conference in Kampala (Uganda) on 18-11-2013

Presentation given on the 6th Nitrogen Conference in Kampala (Uganda) on 18-11-2013

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  • 1. Nitrogen Footprint of Food Production in the EU-27 and Africa Jan Peter Lesschen, Igor Staritsky, Adrian Leip and Oene Oenema Nitrogen Conference, Uganda, 18-11-2013
  • 2. Outline presentation  Introduction  Model approach  Comparison EU-27 and Africa  N footprint results  Discussion  Conclusions Nitrogen Conference, Uganda, 18-11-2013
  • 3. Introduction N rehgiH ycneiciffe N in feed Poultry (meat)  Need to increase food production and lower environmental impact  N footprint for EU available  Nitrogen use efficiency is generally low in livestock production systems  N footprint for Africa still Higher N efficiency N rehgiH ycneiciffe Hi eff Poultry (eggs) %02 -01 N regraL tnirptoof %01 -2 doof gk rep Pork (meat) l a eV fe e B Higher N efficiency % 0 2 - 01 l a eV N regraL tn Veal irptoof Cattle (milk) doof gk rep fe 10-20% eB % 01 - 2 Veal Beef Veal 0 20 Larger N 2-10%per kgfootprint 2-10% footprint food 10-20% per kg food Larger N Beef Cattle (beef) 10-20% 40 60 80 Feed N recovery efficiency in edible weight (% ) Beef 100 La fo 2-10% per Sutton et al. (2011), ENA report unknown Nitrogen Conference, Uganda, 18-11-2013
  • 4. MITERRA-Global  A model for integrated assessment of N (C and P) emissions from agriculture, based on MITERRA-Europe  Global coverage  At country and province level (n= 2467)  Statistics (2007-2009 data) ● 40 crop types (AgroMaps and FAOSTAT) ● 12 livestock types (FAOSTAT)  GIS maps (land cover, soil, climate, N deposition) Nitrogen Conference, Uganda, 18-11-2013
  • 5. Excretion, emission and leaching factors  Average crop nutrient content based on range of global studies and data sources  Excretion and manure management systems: IPCC 2006 guidelines and GAINS and UNFCCC for EU-27  GHG and SOC: IPCC 2006 guidelines (Tier 1-2)  NH3: EMEP/EEA emission inventory guidebook 2009, Tier 2 approach, based on TAN  N leaching and runoff: according to MITERRA-Europe (Velthof et al., 2009) Nitrogen Conference, Uganda, 18-11-2013
  • 6. Approach and Nr sources  N footprint = (Ninput – Noutput) / mproduct (Leip et al., 2013) ● Ninput: manure, mineral fertilizer, BNF, deposition  Included reactive N sources: ● Housing and manure management ● Direct (manure, grazing, mineral fertilizer) and indirect soil emissions ● Fertilizer production ● (Fossil fuel use)  Allocation of N inputs and Nr emissions to feed and food crops Nitrogen Conference, Uganda, 18-11-2013
  • 7. Commodities / functional units 1 kg carcass of meat - beef - pork - chicken 1 kg of cereals 1 kg of potato /root crop 1 kg of leguminous crops 1 kg of milk cow 1 kg of fruits and vegetables 1 kg of sugar crop 1 kg of eggs 1 kg of oil crop Nitrogen Conference, Uganda, 18-11-2013
  • 8. Total soil N input Nitrogen Conference, Uganda, 18-11-2013
  • 9. Harvested crop removal Nitrogen Conference, Uganda, 18-11-2013
  • 10. Soil N surplus Nitrogen Conference, Uganda, 18-11-2013
  • 11. Reactive N emissions Nitrogen Conference, Uganda, 18-11-2013
  • 12. N footprint crop commodities N footprint Crop production Nitrogen Conference, Uganda, 18-11-2013
  • 13. N footprint livestock commodities N footprint Livestock production Nitrogen Conference, Uganda, 18-11-2013
  • 14. Nr emissions per crop commodity EU-27 Africa Nitrogen Conference, Uganda, 18-11-2013
  • 15. Nr emissions per livestock commodity EU-27 Africa Nitrogen Conference, Uganda, 18-11-2013
  • 16. Discussion  Substantial uncertainties, especially for Africa: ● Input data (e.g. grassland yield) ● Allocation of feed to livestock species ● Allocation of manure and fertilizer to different crops ● Nitrogen content crops  Non-ruminants have lower N footprint due to better feed conversion  N footprint based on inputs not necessarily same as N footprint reactive N emissions Nitrogen Conference, Uganda, 18-11-2013
  • 17. Conclusions  Large differences in the N footprint between food commodities, with plant-based commodities having relatively low N losses and livestock products much higher N losses  N footprint for most food commodities lower in Africa due to very low inputs, however, Nr emissions about equal  N footprint of food consumption more determined by diet choices than region of food production Nitrogen Conference, Uganda, 18-11-2013
  • 18. Thank you janpeter.lesschen@wur.nl Nitrogen Conference, Uganda, 18-11-2013

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