A method for raising yield of farm crops includes treating seeds or farm crops with a solution comprising a fertilizer which includes a liquid concentrate, which is a product of processing raw natural material and comprises humic substances or salts of humic substances. The fertilizer is supplemented with nanoparticles of at least one element of the following series: Cu, Zn, Mn, Co, Mo, Fe, Mg, Ag, B, Ge, Se, Ti, Si.
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