Agricultural activities in the Netherlands contribute approximately 10% to the Dutch national emissions of greenhouse gases. Nitrous oxide emissions are calculated on the basis of default IPCC methodology supplemented with several country specific emission factors and account for roughly 4% of Dutch emissions. However, emission factors are based on global analyses and may not apply to specific conditions in the intensively managed Dutch agriculture. Moreover, current emission factors are based on experiments prior to 1995, and variation in emissions due to agricultural management practices and site-specific variation in soil and/or climate has not been tried. Here we report on a meta – analyses of over 20000 individual N₂O flux measurements from Dutch field trials over the period 1995 – 2004. These field trials include grassland and cropland, rates of fertilization from 0 – 330 kg N per ha per year from manure and mineral fertilizer, soil management, crop residue management, cattle stocking and urine production. We report differing emission factors and -functions for urine, manure and fertilizer application and for differences due to soil tillage and crop residue management. Finally, we relate emissions to soil moisture and water filled pore space. On the basis of measurements across up to 10 years we report on uncertainty and inter annual variance of emissions of nitrous oxide. This meta-analysis allows for more accurate and precise national reporting of N₂O emissions of nitrous oxide.