Fuente: WIPO "tomato" This invention reveals a transparent nanoemulsion biopesticide formulation of citronella oil with a particle size of less than 50 nm that functions as a biopesticide. A nano-biopesticide formulation based on citronella oil consisting of (1) citronella oil 5-8%, (2) emulsifier tween 1-2.4%, (3) turpentine oil 0.5-1%, (4) wetting agent Ethylan@SP25 8-10%, (5) glycerol 1-1.6%, and the remainder is distilled water, the total percentage of the ingredients being 100%, which is characterized by a clear/transparent mixture with a particle size of less than 50 nm. This invention functions as a biopesticide to control the fungus Phytophthora capsici and pests of aphids, thrips, and mites on chili plants.