Gluamin Cu is a resistance inductor based on L-amino acids, gluconic acid and copper, ideal for foliar application in order to prevent and treat copper deficiencies, whose symptoms can be: necrotic spots on leaves, leaf drop and apical dryness. Copper plays a fundamental role in respiration processes and in particular it promotes ascorbate oxidase, cytochrome oxidase and polyphenol oxidase. By acting on such enzymes, it catalyses the anthocyanin synthesis. In Gluamin Cu the copper is chelated with gluconic acid and amino acids, so high-quality organic matrixes that make the product a good plant biostimulant ideal for foliar applications. Besides, this particular formulation with gluconic acid makes it of easier absorption and translocation inside the plant, thus stimulating its defensive systems.