EN
With processes analysis method a total energy input amounted to 21,147 MJ per ha of rape. The distribution of the energy, regarding the production operation was as follows: 73% - fertilization, 15% - harvesting, 6% - soil cultivation, 4% - weeding and protection, 2% - sowing. Total nitrogen dose is a deciding factor in the energy-consuming of fertilization. The use of 130 and 160 kgs of nitrogen per ha ensures the most energy-saving production of one ton of seeds. The increase of the energy input used to furher division of the above-mentioned doses, and foliar fertilization has not been compensed by the energy increase in the crop.