Abstract: The invention relates to a composition for protecting an agricultural crop against external threats, such as weeds, pathogens, abiotic and biotic stresses and/or for improving the quality of the products produced by the crop, which composition comprises one or more poly-phenols and one or more other active ingredients. The other active ingredients may be natural crop protection compounds, metals, acids, all three optionally combined with each other and/or chemical. antimicrobial agents, or may be small particles of organic material, in particular of fibrous organic material, compounds that induce stress tolerance, compounds that stimulate wound repair and growth, or cellulose containing materials.

Abstract: The invention relates to a method for providing plants and/or plant parts with an identification label, comprising contacting the plant or plant part with a product, comprising one or more types of tracer molecules, preferably fluorescent tracer molecules, and allowing the plant or plant part to take up the tracer molecules either inside the plant or plant parts or on the surface thereof. The invention further relates to products for use in the method and plant and plant parts treated with the method and to methods for identifying plants or plant parts carrying an identification label.