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| Ledgard, S.; Schils, R.; Eriksen, J.; Luo, J.. |
| Grazed clover/grass pastures are important for animal production systems and the clover component is critical for its contribution to nitrogen (N) inputs via biological fixation of atmospheric N2. The resource efficiency and environmental emissions for clover/grass pastures can differ from that of N-fertilised grass-only pastures. Clover N2 fixation uses photosynthetically-fixed carbon, whereas N fertiliser production consumes fossil fuels and has net greenhouse gas (GHG) emissions. Clover has a higher phosphorus (P) requirement than grass and where extra P fertiliser is used for clover/grass pastures the risk of P loss to waterways is greater than for grass-only pastures. Nitrogen leaching from grazed pasture increases exponentially with increased N... |
| Tipo: Journal paper |
Palavras-chave: Environmental aspects; Farm nutrient management. |
| Ano: 2009 |
URL: http://orgprints.org/17874/4/17874.pdf |
