[ 发表于: Pollution ]
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Mixed farming systems as a way towards a more efficient use of nitrogen in European Union agriculture

1998

Oomen, G.J.M. | Lantinga, E.A. | Goewie, E.A. | Hoek, K.W. van der (Department of Plant and Crop Sciences, Group of Biological Farming Systems, Wageningen Agricultural University, Haarweg 333, 6709 RZ Wageningen (Netherlands))

Department for Environment, Food and Rural Affairs - United Kingdom

Mitigation of nitrous oxide emission from dairy farming systems

1998

Velthof, G.L. | Beusichem, M.L. van | Oenema, O. (Nutrient Management Institute NMI, Wageningen Agricultural University, P.O. Box 8005, 6700 EC Wageningen (Netherlands))

Department for Environment, Food and Rural Affairs - United Kingdom

Environmental performance indicators for nitrogen

1998

Hanegraaf, M.C. (Centre for Agriculture and Environment, P.O. Box 10015, 3505 AA Utrecht (Netherlands))

Department for Environment, Food and Rural Affairs - United Kingdom

The measurement of methane losses from grazing animals

1995

Lockyer, D.R. | Jarvis, S.C. (Institute of Grassland and Environmental Research, North Wyke Research Station, Okehampton, Devon EX20 2SB (United Kingdom))

Department for Environment, Food and Rural Affairs - United Kingdom

The pollution potential and flows of nitrogen to waters and the atmosphere from grassland under grazing

1994

Jarvis, S.C. (AFRC Institute of Grassland and Environmental Research, North Wyke, Okehampton, Devon EX20 2SB (United Kingdom))

Department for Environment, Food and Rural Affairs - United Kingdom