Effect of the application of organic matter (OM) on oilseed rape crop on GHG emissions of biodiesel. For each range of GHG emissions, the number of GSC showing such values is reported for calculations with the actual OM and mineral N applications, and for 50 kgN ha^-1 more as organic N with a fertilizer efficiency as high as that of mineral N ((A), OM 100%) or 50% lower ((B), OM 50%).