The present invention relates to a method of growing a functional crop using nanoorganic germanium and nanoorganic selenium, a method of adding physical energy (heat or pressure) to organic germanium and organic selenium, a method of adding electrical explosive energy, and Nano-sized organic germanium and nano-sized organic selenium prepared in nano size by performing one or two or more selected from the chemical bonding process at the time of the most vigorous growth and development of crops and at least at the time of maturity to achieve fruit By performing irrigation or foliar fertilization two or more times, the prepared nano-sized organic germanium and nano-sized organic selenium are characterized in that they are one-component substances in which water is dispersed in a solvent in a nano-sized state.
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