What are macronutrients? Name the macronutrients required by plants.

Macronutrients:

1. Macronutrients are the nutrients required in large amounts by plants for the process of growth and development.
2. They are present in large amounts, more than 10 mmol/Kg of dry matter in plant tissues.
3. Macronutrients required by plants are C, H, O, N, P, S, K, Ca, and Mg.