An adhesive composition for joining fungus spores to the surface of vegetable seeds in a stable manner, characterized in that it includes an aqueous solution of fermented maize liquor and/or soya protein hydrolysates. A method and to the use of the same for quantifying the adhesion capacity by means of an indirect measurement in which fluorescent microspheres joined to the surface of seeds are quantified by means of the fluorescence microscopy technique is also disclosed. This method allows an indirect assessment of the adhesion of fungus spores to the surface of seeds in a simple manner and consequently allows the quality of the adhesive composition of the present invention to be assessed.
