The invention relates to a liquid formulation that stimulates the germination of seeds and the rooting of plants, including water-soluble addition compounds from the K vitamin group together with complexed microelements and essential amino acids, which acts by improving the metabolic processes that occur during the different stages in the development of treated plants, improving the appearance thereof, activating defence responses and promoting resistance to adverse conditions, both biotic and abiotic, thereby allowing harvest production and yields to be increased.