Copper (Cu) is necessary for normal growth and development, necessary for pollen formation, and also, important in the fertilization process in self-pollinating plants. This element is involved in the synthesis of vitamin A, which is essential for protein synthesis. Copper deficiency manifests itself in leaf curling, causing grain rejection in wheat heads. In legumes, copper is important for the tuberous bacteria that form tubers.
Complex action of fertilizer components ensures more intensive development of roots in the early stages of development, faster plant regeneration after winter, the formation of lateral shoots and their strength, resistance to early spread of diseases.