Towards an agronomic assessment of N2O emissions: a case study for arable crops

J . W . V a n G r o e n i g e na,b , G . L . V e l t h o fb , O . O e n e m ab , K . J . V a n G r o e n i g e nc & C . V a n K e s s e ld aDepartment of Soil Quality, Wageningen University, PO Box 47, 6700 AA, Wageningen, the Netherlands, bAlterra, Wageningen University and Research Center, PO Box 47, 6700 AA, Wageningen, the Netherlands, cDepartment of Botany, Trinity College, University of Dublin, Dublin 2, Ireland, and dDepartment of Plant Sciences, University of California-Davis, Davis, CA 95616, USA