Mag 15 MZ is a new fertilizer formulated to supply magnesium (Mg), sulphur (S), manganese (Mn), and zinc (Zn), essential elements for balanced crop nutrition. Thanks to the exclusive MICRO CHEM® technology, based on the use of selected physioactivators, the nutrients are absorbed quickly and efficiently, maximizing the agronomic effectiveness of the product. Magnesium, a key element in chlorophyll, is essential for photosynthesis and it helps intensify the green colour of leaves, improves fruit pigmentation, and promotes the assimilation and translocation of phosphorus (P) and potassium (K) to apical meristems and storage organs. Sulphur (S), a vital component of sulfur-containing amino acids and proteins, plays a central role in many biochemical processes, contributing to free radical detoxification, sugar mobilization, and increased protein content in the yield. Zinc and manganese are essential micronutrients for protein synthesis and photosynthesis. The application of Mag 15 MZ helps to prevent and counter symptoms of nutritional deficiency such as: interveinal, marginal, basal, or generalised chlorosis, stunted growth, dwarfism, lack of shoot elongation, leaf drop (phylloptosis), small or rosetted leaves, and leaf deformations.