Fuente: WIPO "tomato" A use of an amino acid peptide solution produced by decomposition of fish scales using Bacillus velezensis for healthy and robust growth of Solanaceae seedlings and growth promotion of Solanaceae plants is provided. Bacillus velezensis is deposited in Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures GmbH with an accession number of DSM 34894. The Bacillus velezensis is used to decompose fish scales and produce an amino acid peptide solution containing peptides and amino acids. The amino acid peptide solution is sprayed on leaf surfaces of the Solanaceae seedlings to make the Solanaceae seedlings grow healthy and robust and promote growth of the Solanaceae plants effectively and specifically.