Nutrients which are required in large amounts in functioning of plant are known as macronutrients eg. Ca, Mg, N. Nutrients required in trace amounts are known as micronutrients. Manganese is a micronutrient for plants essential for synthesis of chlorophyll. It is also required for activation of enzymes of respiration and nitrogen metabolism.
The naturally occurring inorganic nutrient found in the soil and food that is necessary for the proper functioning of animal and plant bodies is defined as nutrition. Minerals are vital elements essential for the body.