MACROELEMEMENTS -
1.These are nutrient elements present in plants in easily delectable quantities
2.The average amount of Macroelemements present in 1gm of dry matter is usually more than 1mg
3. Slight excess of these elements are generally not toxic to plants
 4. Macroelemements are generally required to build up the plant body, regulate osmotic concentration and take part in chemical reactions.

MICROELEMENTS -
1. These elements are present in plants in very minute amounts or in traces
2. The average amount of MICROELEMENTS present in 1gm of dry matter is usually less than 1mg.
3.These elements become toxic if increase in concentration
4. Microelements are generally required in the functioning of enzymes, as cofactors or metal activator. Nitrogen, Potassium - Macroelemements Zinc, copper -