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| Schils, R.L.M.; Eriksen, J.; Ledgard, S.; Vellinga, T.V.; Kuikman, P.J.; Lou, J.; Petersen, S.O.; Velthof, G.L.. |
| Herbivores are a significant source of nitrous oxide (N2O) emissions. They account for a large share of manure-related N2O emissions, as well as soil-related N2O emissions through the use of grazing land, and land for feed and forage production. It is widely acknowledged that mitigation measures are necessary to avoid an increase in N2O emissions while meeting the growing global food demand. The production and emissions of N2O are closely linked to the efficiency of nitrogen (N) transfer between the major components of a livestock system, that is, animal, manure, soil and crop. Therefore, mitigation options in this paper have been structured along these N pathways. Mitigation technologies involving diet-based intervention include lowering the CP content... |
| Tipo: Journal paper |
Palavras-chave: Farming Systems; Air and water emissions. |
| Ano: 2012 |
URL: http://orgprints.org/20634/4/20634.pdf |
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| Oenema, O.; Vellinga, T.V.; Van Keulen, H.. |
| This chapter reviews nutrient management of intensively managed grasslands used for dairy farming in The Netherlands, with emphasis on research but with linkages to practice. Firstly, it provides an overview of the changes that have taken place in nutrient management research and practice during the 20th century. Secondly, it presents the current concept of nutrient management with application to grazed grassland. Finally, it discusses nitrogen (N) management of pastures and the tools to improve N management at operational level. Nutrient management under grazing has evolved from merely optimizing manure and fertilizer applications for high herbage yield towards improving nutrient use efficiency at farm level whilst maintaining productivity. Nutrient... |
| Tipo: Conference proceedings |
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| Ano: 2007 |
URL: http://library.wur.nl/ojs/index.php/frontis/article/view/1246 |
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