1. Foliar treatment in the rosette phase in autumn - Efecto Magnesium 1-2 l/ha2. Foliar treatment in the phase of emergence from winter - Efecto nitrogen 1-2 l/ha3. Foliar treatment in the branching phase - Efecto Micro 0.5-1 l/ha4. Foliar treatment in the budding phase - Efecto Bor 0.5-1 l/ha or Efecto Bor Active 1 kg/ha..