The object of the invention is a formulation of metal and ascorbic acid complexes of the general formula MO(OH)z(Asc)x·yH2O, in a solid form, where: M is a metal that is titanium or vanadium； Asc represents C6H7O6； x is an integer from 1 to 4； y is an integer from 0 to 5； z is 0 or 1； molar ratio of M to Asc is from 1:1 to 1:4, with one or more agriculturally acceptable substances selected from excipients, carriers, other active agents. The object of the invention is also a method for obtaining these formulations and the use thereof. The object of the invention is also the use of the complex as described above, for the preparation of formulations used in the cultivation of plants.
