C content was not measured directly, but if we assumed similar levels to previous studies (e.g. Rytter used a common C-concentration of 500 mg g_1 biomass ) we can derive C accumulation levels in the crop of 0.79e1.17 t ha_1 year_1 below ground and 5.21e6.93 t ha_1 year_1 above ground, with the greatest potentials for both pools being in Endurance