Petro 357 W is an organic-mineral fertilizer that is yielded from the processing of fine, carefully selected raw materials to determine a timed release of nutrients. These are, in fact, characterized by different net rates of mineralization. Petro 357 W supplies calcium and sulphur, two essential elements that nourish and improve the chemical-physical characteristics of the soil. RyZea, Petro 357 W yield a completely exclusive formulation deliberately enriched with special known chelating agents (e.g., glycine) able to “bind” soil nutrients and convey them to plants more easily and effectively. Among the other components, RyZea provides a high percentage of amino acids, improving plant recovery after winter stasis.