Question

What are the two macronutrients that usually play the most important role in limiting plant growth locally?

Answer 1

Macronutrients like carbon, oxygen, hydrogen, nitrogen, phosphorus, potassium, and sulfur are present majorly in all biomolecules and hence do not show their effects locally but are important throughout the plant body.

Magnesium is the central atom in chlorophyll whereas calcium is the structural component of the middle lamella.

Hence their deficiency will limit plant growth locally in the regions where they are usually present and of utmost importance.