MANAGEMENT PRACTICES OF MISCANTHUS× GIGANTEUS STRONGLY INFLUENCE SOIL PROPERTIES AND N2O EMISSIONS

摘要: ObjectivesMiscanthus× giganteus, a perennial C4 crop, is presented as a promising energy crop. Main variations in management practices concern harvest time and N input rate. These practices strongly modify the N and C cycles in the soil, influencing N2O emission and the crop GHG balance which has to be beneficial. Whereas the effect of N input on N2O emissions was often investigated, the effect of fertilizer form and harvest time in miscanthus remains poorly documented. The purpose of this study was to investigate the effect of an early or late harvest on soil parameters and N2O emissions and the effect of fertilizer form (NH4 or NO3) on N2O emissions.