GRANLAETE is used to prevent the physiopathies caused by multiple deficiencies of Fe, Mn, MgO and specific magnesium deficiencies such as the drying out of the rachis in the grapes, and the apple phyloptosis. The particular composition of the formulation allows optimizing the photosynthesis process. NITROGEN: organic nitrogen with slow mineralization (natural slow release) PHOSPHORUS: completely soluble and available POTASSIUM: Mixed salts with the different fractions appropriately balanced in order to obtain a perfect solubility.