خيارات البحث
النتائج 1 - 6 من 6
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))
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))
Environmental performance indicators for nitrogen
1998
Hanegraaf, M.C. (Centre for Agriculture and Environment, P.O. Box 10015, 3505 AA Utrecht (Netherlands))
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))
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))
Diet of herbivorous game species in immission clearing areas and its possible impact on vegetation
1995
Homolka, M. (Akademie Ved, Brno (Czech Republic). Ustav Ekologie Krajiny)
