599664 Disclosed herein is a formulation comprising (a) a preparation comprising an extract derived from a plant Reynoutria species, wherein said plant contains one or more anthraquinone derivatives that induce plant resistance to phytopathogens； (b) one or more C2-C7 alcohols, or glycols or lactones； (c) one or more surfactants selected from the group consisting of a sulfate, ethoxylated fatty acid esters, wherein said alcohols and surfactants are present in amounts effective to stabilise said preparation and at least one of (d) an antifreeze, (e) a carrier and (f) an antimicrobial agent and wherein the antimicrobial agent is selected from the group consisting of a chemical pesticide, biopesticide or natural or oil-product having fungicidal and/or insecticidal activity. Also disclosed is the use of said formulations as a pesticide.
