Abstract: A method for controlling pathogens on a plant tissue of a growing plant with an aqueous solution resulting from the dissolution in water of a powdered composition comprising a dry, water soluble mixture of (i) a peracetic acid precursor comprising: a solid hydrogen peroxide precursor, optionally a pH adjusting agent, and an acetylating agent; and (ii) at least one SAR inducer which is a water soluble silicate salt defining a source of silicate ions, to generate in situ peracetic acid (PAA). A synergistic effect is observed once the SAR inducer which is a water soluble silicate salt defining a source of silicate ions, and the peracetic acid are respectively simultaneously present in and on the plant.

Abstract: The invention relates to the field of agriculture. It concerns an unexpected synergistic activity resulting from a combined use of peracetic acid and at least one SAR inducer which is a water soluble silicate salt defining a source of silicate ions, for the control of pathogens into and on a plant tissue of a growing plant. Also, the invention relates to a water soluble mixture or composition (especially a powdered composition) comprising a peracetic precursor system and at least one SAR inducer which is a water soluble silicate salt defining a source of silicate ions, which once admixed with water, allow the control of pathogens in and onto a plant tissue of a growing plant. Also, the invention relates to uses and methods involving said water soluble mixture or composition, and a kit comprising said water soluble mixture or composition.