(EN) The present invention concerns a composition for fruit, cereal and vegetable protection which has a pH of between 5.5 and 7.5 and containing at least 2000 mg/l, preferably at least 1800 mg/l of a combination of guanidinium derivatives, particularly oligo (2-(2-ethoxy) ethoxy ethyl guanidinium chloride), poly (hexamethylendiamine guanidinium chloride) and polyetheramines, triethyleneglycol diamine, enzymes, PGPR, amino acids, antioxidants such as humic acids, some natural products like phytotherapeutic plant extracts.