K-30 is a formulation based on potassium oxide (K₂O) designed for application via fertigation and foliar spray to promote fruit growth and uniform ripening, enhance the plant’s resistance to environmental stress (drought, temperature fluctuations, and water excess) acting on stomatal opening, and reduce vegetative excesses. Potassium plays a fundamental role in several physiological processes in the plant, in fact, it participates in the activation of chlorophyll photosynthesis and protein synthesis, optimizing the biochemical mechanisms responsible for vegetative growth and reproductive development. Moreover, it stimulates the synthesis and accumulation of sugars in fruits, leading to high-quality ripening. Foliar application of K-30 visibly improves the aesthetic quality of vegetation: it prevents natural surface contamination such as honeydew and sooty mold, and promotes healthy, compact, and shiny foliage, keeping leaves clean and functional.