Magnesium is involved in chlorophyll synthesis as a building block in plants. Therefore it is very important for photosynthesis. Most significant symptom of Magnesium deficiency is yellow parts between veins in old leaves. Especially in sandy soils, Magnesium deficiency throughout plant development is prevalent. Plants shed their leaves. Vita MAG quickly eliminates Magnesium deficiency. Its Sulfur content lowers pH and increases the resistance of the plant to cold. Sulfur deficiency causes retardation in protein and chlorophyll synthesis, in turn chlorosis. Iron prevents chlorosis and promotes coloring in plants. Vita Mag increases quality and color in plants and fruits.