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| Steinshamn, Håvard; Thuen, Erling; Bleken, Marina Azzaroli; Brenøe, Ulrik Tutein; Ekerholt, Georg; Yri, Cecilie. |
| Inputs of N and P, flows through the soil–plant–animal pathway and removals by products were recorded for 3 years at the organically managed prototype dairy farm ‘Frydenhaug’ in Norway to assess the transfer efficiencies of N and P within and at the farm level. Nutrient balances and efficiency (N or P in products divided by N or P in inputs) were compared to data from other studies of dairy farm systems in Europe. Plant production on the farm covered nearly all the needs by the herd. However, about 10% of the plant production was sold as cash crop and about the same amount was bought as feed. At the farm level, ‘Frydenhaug’ realized annually and on average lower surpluses and higher N or P efficiencies than found in most studies concerned. On average, N... |
| Tipo: Journal paper |
Palavras-chave: Nutrient turnover; Pasture and forage crops; Dairy cattle; Farming Systems. |
| Ano: 2004 |
URL: http://orgprints.org/2680/1/2680.pdf |
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