Fuente: WIPO "tomato" The present invention relates to a combination of active components. Wherein the active components comprise (i) a polypeptide with cell membrane interacting properties and (ii) a polycationic polymer. The present invention further relates to mixtures and (agrochemical) compositions comprising the combination of the current invention. The invention further provides methods of application and use of the combination, mixture or (agrochemical) composition to protect or treat a plant field, plant, or part of the plant from or for an infection by a plant pathogenic fungus.