Like all living organisms, plants need a balanced supply of nutrients.
SPAA^® has developed a chelation process of micro and mesoelements through which an element is incorporated by complexing molecules.
The chelated element is available to be assimilated by plants.
The essential elements are divided into three categories according to their concentration in plant tissues:

• MACRONUTRIENTS (C, H, O, N, P, K),
• MESOELEMENTS (S, Ca, Mg),
• MICRONUTRIENTS (Fe, Mn, Zn, Cu, B, Mo) etc.