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| Lynch, Derek H; Roberts, Cory; Voroney, Paul. |
| The distinctive production characteristics and economic performance of organic dairy farms in central Canada has been documented, but the sustainability of these systems with respect to farm nutrient flows is less well understood. We have assessed farm management, livestock productivity, and nutrient status of fifteen long term (>10y) certified organic dairy farms in Ontario, Canada. Farm size, herd size and herd productivity averaged 110 ha, 52 cows and 8207 kg milk cow yr-1, respectively. Cropping composition differed little between farms, with pasture and forage accounting for an average of 65% of the cropped landbase. Annual farm nutrient budgets (inputs-outputs) over two years (2003-2005) for N, P and K were 52, 1 and 11 kg ha-1 yr-1,... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Dairy cattle; Farm nutrient management. |
| Ano: 2006 |
URL: http://orgprints.org/7461/1/DLynch_Abstract_Organic_Congress_Denmark.doc |
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