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Farm-gate N and P balances and use efficiencies across specialist dairy farms in the Republic Ireland

Author

Listed:
  • Cathal Buckley

    (Rural Economy and Development Programme, Teagasc, Athenry, Co. Galway, Ireland)

  • Paul Murphy

    (Agricultural Catchments Programme, Teagasc, Wexford, Co. Wexford)

  • David Wall

    (Johnstown Castle Research Centre, Teagasc, Wexford, Co. Wexford.)

Abstract

This study establishes farm gate N and P balances and use efficiencies based on the average of 2 years of Teagasc National Farm Survey data in 2009 and 2010. The weighted average farm gate N surplus for this nationally representative sample of specialist dairy farms was 143.4 kg N ha-1. Average farm gate nitrogen use efficiency was 23.2%. For dairy farms operating under an EU Nitrates Derogation, the average N surplus was higher at 181.8 kg N ha-1 and averageN use efficiency was slightly lower at 22.2%. The total average farm gate P balance was 4.1 kg ha-1 in surplus, and P use efficiency averaged 83.9%. P balance ranged from -7.3 to 23.0 kg ha-1. A total of 27% had a negative P balance. The average P surplus for farms with a Nitrates Derogation was below the average of all farms at 3.5 kg P ha-1 and average P use efficiency for these Derogation farms was above the average of all farms at 90%.

Suggested Citation

  • Cathal Buckley & Paul Murphy & David Wall, 2013. "Farm-gate N and P balances and use efficiencies across specialist dairy farms in the Republic Ireland," Working Papers 1302, Rural Economy and Development Programme,Teagasc.
    • Handle: RePEc:tea:wpaper:1302
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    File URL: http://www.teagasc.ie/rural-economy/downloads/workingpapers/13wpre02.pdf
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    References listed on IDEAS

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    Cited by:

    1. Ryan, Mary & Buckley, Cathal & Dillon, Emma Jane & Donnellan, Trevor & Hanrahan, Kevin & Hennessy, Thia & Moran, Brian, 2014. "The development of farm-level sustainability indicators for Ireland using the Teagasc National Farm Survey," 88th Annual Conference, April 9-11, 2014, AgroParisTech, Paris, France 170501, Agricultural Economics Society.

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