Farmers benefiting from a derogation shall ensure that the following conditions are met:
70 % or more of the acreage of the farm shall be cultivated with crops with high nitrogen demand and long growing season;
temporary grassland shall be ploughed in spring;
temporary and permanent grassland shall not include more than 50 % of leguminous or other plants fixing atmospheric nitrogen;
late maturing maize shall be harvested (the whole plant);
winter herbage, such as Italian ryegrass, barley, triticale or winter rye, shall be seeded within 2 weeks after harvest of maize/sorghum and shall be harvested no earlier than 2 weeks before maize/sorghum sowing;
summer herbage, such as maize, sorghum, Setaria or Panicum sp. shall be seeded within 2 weeks after harvest of winter cereals and shall be harvested no earlier than 2 weeks before winter cereals sowing;
a crop with high nitrogen demand shall be seeded within 2 weeks after ploughing grass and fertilisers shall not be applied in the year of ploughing of permanent grassland.