Plant Nutrients

There are 16 essential nutrients required by plants and divided into two groups;

A. Macro nutrients, which are needed in relatively large amount: N (nitrogen), P (phosphorus) and K (potassium), Ca (calcium), Mg (Magnesium) and S (Sulfur).

B. Micro-nutrients, which are needed by plants in relatively very small amount, such as: Cl (Chlorine), Fe (Iron), Mn (manganese), Cu (copper), Zn (zinc), B (Boron) and Mo (Molibdenium ).

Thirteen of the above nutrients taken from the soil. There are still three other nutrients; C (Carbon), H (hydrogen) and O (oxygen) is taken in the form of CO₂ from the air and from the ground in the form of H₂O (water).