Macro nutrient

1.  These elements are required for plant in huge amount in the plant body .
2.  It is very much required for growth and development in the plant body.
3. They are those essential element which are present in easily detectable quantity 1-10 mg per gram of dry matter . Macro element are usually involved in the synthesis of organic molecules and development of osmotic potential of the cell .
4. There are 9 element are present in the earth which are undergo in the macro nutrient.
5. C, H, O, N, P, K, S, Ca, Mg. etc. are include in the macro nutrient.
6. On fresh weight basic O2 is the most abundant element . On dry weight basis it is almost equal to carbon.
7. Of the non essential function or beneficial element, silicon and sodium often occur in the range of macro nutrient.