Fuente: WIPO "tomato" The present invention provides a bio-stimulant composition for promoting plant growth and development. The biostimulant composition comprises seaweed extract, milk solids, one or more amino acid and optionally one or more of the ingredients selected from protein hydrolysate, humic substance, macronutrient and micronutrient. The present invention also provides a method for preparing the bio-stimulant composition.